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+All of the actors portraying runners underwent an intensive three-month training regimen with renowned running coach Tom McNab. This training and isolation of the actors also created a strong bond and sense of camaraderie among them.
+
+Filming 
+
+The beach scenes showing the athletes running towards the Carlton Hotel at Broadstairs, Kent, were shot in Scotland on West Sands, St Andrews next to the 18th hole of the Old Course at St Andrews Links. A plaque now commemorates the filming. The impact of these scenes (as the athletes run in slow motion to Vangelis's music) prompted Broadstairs town council to commemorate them with a seafront plaque.
+
+All of the Cambridge scenes were actually filmed at Hugh Hudson's alma mater Eton College, because Cambridge refused filming rights, fearing depictions of anti-Semitism. The Cambridge administration greatly regretted the decision after the film's enormous success.
+
+Liverpool Town Hall was the setting for the scenes depicting the British Embassy in Paris. The Colombes Olympic Stadium in Paris was represented by the Oval Sports Centre, Bebington, Merseyside. The nearby Woodside ferry terminal was used to represent the embarkation scenes set in Dover. The railway station scenes were filmed in York, using locomotives from the National Railway Museum. The filming of the Scotland–France international athletic meeting took place at Goldenacre Sports Ground, owned by George Heriot's School while the Scotland–Ireland meeting was at the nearby Inverleith Sports Ground. The scene depicting a performance of The Mikado was filmed in the Royal Court Theatre, Liverpool, with members of the D'Oyly Carte Opera Company who were on tour.
+
+Editing 
+The film was slightly altered for the U.S. audience. A brief scene depicting a pre-Olympics cricket game between Abrahams, Liddell, Montague, and the rest of the British track team appears shortly after the beginning of the original film. For the American audience, this brief scene was deleted. In the U.S., to avoid the initial G rating, which had been strongly associated with children's films and might have hindered box office sales, a different scene was used – one depicting Abrahams and Montague arriving at a Cambridge railway station and encountering two First World War veterans who use an obscenity – in order to be given a PG rating. An off camera retort of "Win It For Israel" among exhortations of Abraham's fellow students before he takes on the challenge of The Great Court Run was curiously absent from the final cuts theatrically distributed in the U.S. but can be heard in versions broadcast on such cable outlets as TCM.
+
+Soundtrack 
+
+Although the film is a period piece, set in the 1920s, the Academy Award-winning original soundtrack composed by Vangelis uses a modern 1980s electronic sound, with a strong use of synthesizer and piano among other instruments. This was a departure from earlier period films, which employed sweeping orchestral instrumentals. The title theme of the film has been used in subsequent films and television shows during slow-motion segments.
+
+Vangelis, a Greek-born electronic composer who moved to Paris in the late 1960s, had been living in London since 1974. Director Hugh Hudson had collaborated with him on documentaries and commercials, and was also particularly impressed with his 1979 albums Opera Sauvage and China. David Puttnam also greatly admired Vangelis's body of work, having originally selected his compositions for his previous film Midnight Express. Hudson made the choice for Vangelis and for a modern score: "I knew we needed a piece which was anachronistic to the period to give it a feel of modernity. It was a risky idea but we went with it rather than have a period symphonic score." The soundtrack had a personal significance to Vangelis: after composing the theme he told Puttnam, "My father is a runner, and this is an anthem to him."
+
+Hudson originally wanted Vangelis's 1977 tune "L'Enfant", from his Opera Sauvage album, to be the title theme of the film, and the beach running sequence was actually filmed with "L'Enfant" playing on loudspeakers for the runners to pace to. Vangelis finally convinced Hudson he could create a new and better piece for the film's main theme – and when he played the "Chariots of Fire" theme for Hudson, it was agreed the new tune was unquestionably better. The "L'Enfant" melody still made it into the film: when the athletes reach Paris and enter the stadium, a brass band marches through the field, and first plays a modified, acoustic performance of the piece. Vangelis's electronic "L'Enfant" track eventually was used prominently in the 1982 film The Year of Living Dangerously.
+
+Some pieces of Vangelis's music in the film did not end up on the film's soundtrack album. One of them is the background music to the race Eric Liddell runs in the Scottish highlands. This piece is a version of "Hymne", the original version of which appears on Vangelis's 1979 album, Opéra sauvage. Various versions are also included on Vangelis's compilation albums Themes, Portraits, and Odyssey: The Definitive Collection, though none of these include the version used in the film.
+
+Five lively Gilbert and Sullivan tunes also appear in the soundtrack, and serve as jaunty period music which counterpoints Vangelis's modern electronic score. These are: "He is an Englishman" from H.M.S. Pinafore, "Three Little Maids From School Are We" from The Mikado, "With Catlike Tread" from The Pirates of Penzance, "The Soldiers of Our Queen" from Patience, and "There Lived a King" from The Gondoliers.
+
+The film also incorporates a major traditional work: "Jerusalem", sung by a British choir at the 1978 funeral of Harold Abrahams. The words, written by William Blake in 1804–08, were set to music by Hubert Parry in 1916 as a celebration of England. This hymn has been described as "England's unofficial national anthem", concludes the film and inspired its title. A handful of other traditional anthems and hymns and period-appropriate instrumental ballroom-dance music round out the film's soundtrack.
+
+Release
+The film was distributed by 20th Century-Fox and selected for the 1981 Royal Film Performance with its premiere on 30 March 1981 at the Odeon Haymarket before opening to the public the following day. It opened in Edinburgh on 4 April and in Oxford and Cambridge on 5 April with other openings in Manchester and Liverpool before expanding further in May into 20 additional London cinemas and 11 others nationally. It was shown in competition at the 1981 Cannes Film Festival on 20 May. 
+
+The film was distributed by The Ladd Company through Warner Bros. in North America and released on 25 September 1981 in Los Angeles, California and in New York Film Festival, on 26 September 1981 in New York and on 9 April 1982 in the United States.
+
+Reception 
+Since its release, Chariots of Fire has received generally positive reviews from critics. , the film holds an 83% "Certified Fresh" rating on the review aggregator website Rotten Tomatoes, based on 111 reviews, with a weighted average of 7.7/10. The site's consensus reads: "Decidedly slower and less limber than the Olympic runners at the center of its story, Chariots of Fire nevertheless manages to make effectively stirring use of its spiritual and patriotic themes." On Metacritic, the film has a score of 78 out of 100 based on 19 critics' reviews, indicating "generally favorable reviews".
+
+For its 2012 re-release, Kate Muir of The Times gave the film five stars, writing: "In a time when drug tests and synthetic fibres have replaced gumption and moral fibre, the tale of two runners competing against each other in the 1924 Olympics has a simple, undiminished power. From the opening scene of pale young men racing barefoot along the beach, full of hope and elation, backed by Vangelis's now famous anthem, the film is utterly compelling."
+
+In its first four weeks at the Odeon Haymarket it grossed £106,484. The film was the highest-grossing British film for the year with theatrical rentals of £1,859,480. Its gross of almost $59 million in the United States and Canada made it the highest-grossing film import into the US (i.e. a film without any US input) at the time, surpassing Meatballs $43 million.
+
+Accolades 
+The film was nominated for seven Academy Awards, winning four (including Best Picture). When accepting his Oscar for Best Original Screenplay, Colin Welland famously announced "The British are coming". It was the first film released by Warner Bros. to win Best Picture since My Fair Lady in 1964.
+
+American Film Institute recognition
+ 1998: AFI's 100 Years...100 Movies - Nominated
+ 2005: AFI's 100 Years of Film Scores - Nominated
+ 2006: AFI's 100 Years...100 Cheers - No. 100
+ 2007: AFI's 100 Years...100 Movies (10th Anniversary Edition) - Nominated
+ 2008: AFI's 10 Top 10 - Nominated Sports Movie
+
+Other honours
+ BFI Top 100 British films (1999) – rank 19
+ Hot 100 No. 1 Hits of 1982 (USA) (8 May) – Vangelis, Chariots of Fire theme
+
+Historical accuracy 
+Chariots of Fire is a film about achieving victory through self sacrifice and moral courage. While the producers' intent was to make a cinematic work that was historically authentic, the film was not intended to be historically accurate. Numerous liberties were taken with the actual historical chronology, the inclusion and exclusion of notable people, and the creation of fictional scenes for dramatic purpose, plot pacing and exposition.
+
+Characters 
+The film depicts Abrahams as attending Gonville and Caius College, Cambridge, with three other Olympic athletes: Henry Stallard, Aubrey Montague, and Lord Andrew Lindsay. Abrahams and Stallard were, in fact, students there and competed in the 1924 Olympics. Montague also competed in the Olympics as depicted, but he attended Oxford, not Cambridge. Aubrey Montague sent daily letters to his mother about his time at Oxford and the Olympics; these letters were the basis of Montague's narration in the film.
+
+The character of Lindsay was based partially on Lord Burghley, a significant figure in the history of British athletics. Although Burghley did attend Cambridge, he was not a contemporary of Harold Abrahams, as Abrahams was an undergraduate from 1919 to 1923 and Burghley was at Cambridge from 1923 to 1927. One scene in the film depicts the Burghley-based "Lindsay" as practising hurdles on his estate with full champagne glasses placed on each hurdle – this was something the wealthy Burghley did, although he used matchboxes instead of champagne glasses. The fictional character of Lindsay was created when Douglas Lowe, who was Britain's third athletics gold medallist in the 1924 Olympics, was not willing to be involved with the film.
+
+Another scene in the film recreates the Great Court Run, in which the runners attempt to run around the perimeter of the Great Court at Trinity College, Cambridge in the time it takes the clock to strike 12 at midday. The film shows Abrahams performing the feat for the first time in history. In fact, Abrahams never attempted this race, and at the time of filming the only person on record known to have succeeded was Lord Burghley, in 1927. In Chariots of Fire, Lindsay, who is based on Lord Burghley, runs the Great Court Run with Abrahams in order to spur him on, and crosses the finish line just a moment too late. Since the film's release, the Great Court Run has also been successfully run by Trinity undergraduate Sam Dobin, in October 2007.
+
+In the film, Eric Liddell is tripped up by a Frenchman in the 400-metre event of a Scotland–France international athletic meeting. He recovers, makes up a 20-metre deficit, and wins. This was based on fact; the actual race was the 440 yards at a Triangular Contest meet between Scotland, England, and Ireland at Stoke-on-Trent in England in July 1923. His achievement was remarkable as he had already won the 100- and 220-yard events that day. Also unmentioned with regard to Liddell is that it was he who introduced Abrahams to Sam Mussabini. This is alluded to: in the film, Abrahams first encounters Mussabini while he is watching Liddell race.
+
+Abrahams and Liddell did race against each other twice, but not as depicted in the film, which shows Liddell winning the final of the 100 yards against a shattered Abrahams at the 1923 AAA Championship at Stamford Bridge. In fact, they raced only in a heat of the 220 yards, which Liddell won, five yards ahead of Abrahams, who did not progress to the final. In the 100 yards, Abrahams was eliminated in the heats and did not race against Liddell, who won the finals of both races the next day. They also raced against each other in the 200 m final at the 1924 Olympics, and this was also not shown in the film.
+
+Abrahams' fiancée is misidentified as Sybil Gordon, a soprano with the D'Oyly Carte Opera Company. In fact, in 1936, Abrahams married Sybil Evers, who also performed with D'Oyly Carte, but they did not meet until 1934. Also, in the film, Sybil is depicted as singing the role of Yum-Yum in The Mikado, but neither Gordon nor Evers ever sang that role with D'Oyly Carte, although Evers was known for her charm in singing Peep-Bo, one of the two other "little maids from school". Harold Abrahams' love of and heavy involvement with Gilbert and Sullivan, as depicted in the film, is factual.
+
+Liddell's sister was several years younger than she was portrayed in the film. Her disapproval of Liddell's track career was creative licence; she actually fully supported his sporting work. Jenny Liddell Somerville cooperated fully with the making of the film and has a brief cameo in the Paris Church of Scotland during Liddell's sermon.
+
+At the memorial service for Harold Abrahams, which opens the film, Lord Lindsay mentions that he and Aubrey Montague are the only members of the 1924 Olympic team still alive. However, Montague died in 1948, 30 years before Abrahams' death.
+
+Paris Olympics 1924 
+
+In the film, the 100m bronze medallist is a character called "Tom Watson"; the real medallist was Arthur Porritt of New Zealand, who refused permission for his name to be used in the film, allegedly out of modesty, and his wish was accepted by the film's producers, even though his permission was not necessary. However, the brief back-story given for Watson, who is called up to the New Zealand team from the University of Oxford, substantially matches Porritt's history. With the exception of Porritt, all the runners in the 100m final are identified correctly when they line up for inspection by the Prince of Wales.
+
+Jackson Scholz is depicted as handing Liddell an inspirational Bible-quotation message before the 400 metres final: "It says in the Old Book, 'He that honors me, I will honor.' Good luck." In reality, the note was from members of the British team, and was handed to Liddell before the race by his attending masseur at the team's Paris hotel. For dramatic purposes, screenwriter Welland asked Scholz if he could be depicted handing the note, and Scholz readily agreed, saying "Yes, great, as long as it makes me look good."
+
+The events surrounding Liddell's refusal to race on a Sunday are fictional. In the film, he does not learn that the 100-metre heat is to be held on the Christian Sabbath until he is boarding the boat to Paris. In fact, the schedule was made public several months in advance; Liddell did however face immense pressure to run on that Sunday and to compete in the 100 metres, getting called before a grilling by the British Olympic Committee, the Prince of Wales, and other grandees, and his refusal to run made headlines around the world.
+
+The decision to change races was, even so, made well before embarking to Paris, and Liddell spent the intervening months training for the 400 metres, an event in which he had previously excelled. It is true, nonetheless, that Liddell's success in the Olympic 400m was largely unexpected.
+
+The film depicts Lindsay, having already won a medal in the 400-metre hurdles, giving up his place in the 400-metre race for Liddell. In fact Burghley, on whom Lindsay is loosely based, was eliminated in the heats of the 110 hurdles (he would go on to win a gold medal in the 400 hurdles at the 1928 Olympics), and was not entered for the 400 metres.
+
+The film reverses the order of Abrahams' 100m and 200m races at the Olympics. In reality, after winning the 100 metres race, Abrahams ran the 200 metres but finished last, Jackson Scholz taking the gold medal. In the film, before his triumph in the 100m, Abrahams is shown losing the 200m and being scolded by Mussabini. And during the following scene in which Abrahams speaks with his friend Montague while receiving a massage from Mussabini, there is a French newspaper clipping showing Scholz and Charley Paddock with a headline which states that the 200 metres was a triumph for the United States. In the same conversation, Abrahams laments getting "beaten out of sight" in the 200. The film thus has Abrahams overcoming the disappointment of losing the 200 by going on to win the 100, a reversal of the real order.
+
+Eric Liddell actually also ran in the 200m race, and finished third, behind Paddock and Scholz. This was the only time in reality that Liddell and Abrahams competed in the same finals race. While their meeting in the 1923 AAA Championship in the film was fictitious, Liddell's record win in that race did spur Abrahams to train even harder.
+
+Abrahams also won a silver medal as an opening runner for the 4 x 100 metres relay team, not shown in the film, and Aubrey Montague placed sixth in the steeplechase, as depicted.
+
+London Olympics' 2012 revival 
+Chariots of Fire became a recurring theme in promotions for the 2012 Summer Olympics in London. The film's theme was featured at the opening of the 2012 London New Year's fireworks celebrating the Olympics. The runners who first tested the new Olympic Park were spurred on by the Chariots of Fire theme, and the music was also used to fanfare the carriers of the Olympic flame on parts of its route through the UK. The beach-running sequence was also recreated at St. Andrews and filmed as part of the Olympic torch relay.
+
+The film's theme was also performed by the London Symphony Orchestra, conducted by Simon Rattle, during the Opening Ceremony of the games; the performance was accompanied by a comedy skit by Rowan Atkinson (as Mr. Bean) which included the opening beach-running footage from the film. The film's theme was again played during each medal ceremony of the 2012 Olympics.
+
+As an official part of the London 2012 Festival celebrations, a new digitally re-mastered version of the film screened in 150 cinemas throughout the UK. The re-release began 13 July 2012, two weeks before the opening ceremony of the London Olympics.
+
+A Blu-ray of the film was released on 10 July 2012 in North America, and was released 16 July 2012 in the UK. The release includes nearly an hour of special features, a CD sampler, and a 32-page "digibook".
+
+Stage adaptation 
+
+A stage adaptation of Chariots of Fire was mounted in honour of the 2012 Olympics. The play, Chariots of Fire, which was adapted by playwright Mike Bartlett and included the Vangelis score, ran from 9 May to 16 June 2012 at London's Hampstead Theatre, and transferred to the Gielgud Theatre in the West End on 23 June, where it ran until 5 January 2013. It starred Jack Lowden as Eric Liddell and James McArdle as Harold Abrahams, and Edward Hall directed. Stage designer Miriam Buether transformed each theatre into an Olympic stadium, and composer Jason Carr wrote additional music. Vangelis also created several new pieces of music for the production. 
+
+The stage version for the London Olympic year was the idea of the film's director, Hugh Hudson, who co-produced the play; he stated, "Issues of faith, of refusal to compromise, standing up for one's beliefs, achieving something for the sake of it, with passion, and not just for fame or financial gain, are even more vital today."
+
+Another play, Running for Glory, written by Philip Dart, based on the 1924 Olympics, and focusing on Abrahams and Liddell, toured parts of Britain from 25 February to 1 April 2012. It starred Nicholas Jacobs as Harold Abrahams, and Tom Micklem as Eric Liddell.
+
+See also 
+ List of films about the sport of athletics
+ Chariots of Fire, a race, inspired by the film, held in Cambridge since 1991
+ Great Britain at the 1924 Summer Olympics
+ Sabbath breaking
+
+References
+
+Notes
+
+External links 
+
+  
+ 
+ 
+ 
+ 
+ 
+ Critics' Picks: Chariots of Fire retrospective video by A. O. Scott, The New York Times (2008)
+ Four speeches from the movie in text and audio from AmericanRhetoric.com
+ Chariots of Fire  review by Roger Ebert
+ Chariots of Fire review in Variety
+ Chariots of Fire at the Arts & Faith Top 100 Spiritually Significant Films
+ Chariots of Fire  Filming locations
+ Chariots of Fire screenplay, second draft, February 1980
+ Great Court Run
+ Chariots of Fire play – Hampstead Theatre
+
+1981 films
+1980s English-language films
+1980s French-language films
+20th Century Fox films
+1980s biographical drama films
+Best Foreign Language Film Golden Globe winners
+Best Picture Academy Award winners
+British biographical drama films
+British sports drama films
+University of Cambridge in fiction
+Films about Christianity
+Films about competitions
+Films about religion
+Films directed by Hugh Hudson
+Films set in 1919
+Films set in 1920
+Films set in 1923
+Films set in 1924
+Films set in 1978
+Films set in Cambridge
+Films set in Kent
+Films set in London
+Films set in Paris
+Films set in England
+Films set in France
+Films set in Scotland
+Films set in the University of Cambridge
+Films whose writer won the Best Original Screenplay Academy Award
+Films that won the Best Original Score Academy Award
+Goldcrest Films films
+Biographical films about Jewish people
+Films about the 1924 Summer Olympics
+Films about Olympic track and field
+Running films
+Sport at the University of Cambridge
+Sports films based on actual events
+Warner Bros. films
+Films scored by Vangelis
+Films that won the Best Costume Design Academy Award
+Films set on beaches
+Religion and sports
+Films shot in Edinburgh
+Best Film BAFTA Award winners
+Films produced by David Puttnam
+The Ladd Company films
+Biographical films about sportspeople
+Cultural depictions of track and field athletes
+1981 directorial debut films
+1981 drama films
+Films shot in York
+Films shot in North Yorkshire
+Films shot in Yorkshire
+Films shot in Liverpool
+Films shot in Merseyside
+Films shot in Kent
+Films about antisemitism
+1980s British films
+Toronto International Film Festival People's Choice Award winners
+Cultural depictions of Edward VIII and Wallis Simpson
+In ethical philosophy, consequentialism is a class of normative, teleological ethical theories that holds that the consequences of one's conduct are the ultimate basis for judgement about the rightness or wrongness of that conduct. Thus, from a consequentialist standpoint, a morally right act (or omission from acting) is one that will produce a good outcome. Consequentialism, along with eudaimonism, falls under the broader category of teleological ethics, a group of views which claim that the moral value of any act consists in its tendency to produce things of intrinsic value. Consequentialists hold in general that an act is right if and only if the act (or in some views, the rule under which it falls) will produce, will probably produce, or is intended to produce, a greater balance of good over evil than any available alternative. Different consequentialist theories differ in how they define moral goods, with chief candidates including pleasure, the absence of pain, the satisfaction of one's preferences, and broader notions of the "general good".
+
+Consequentialism is usually contrasted with deontological ethics (or deontology): deontology, in which rules and moral duty are central, derives the rightness or wrongness of one's conduct from the character of the behaviour itself, rather than the outcomes of the conduct. It is also contrasted with both virtue ethics which focuses on the character of the agent rather than on the nature or consequences of the act (or omission) itself, and pragmatic ethics which treats morality like science: advancing collectively as a society over the course of many lifetimes, such that any moral criterion is subject to revision.
+
+Some argue that consequentialist theories (such as utilitarianism) and deontological theories (such as Kantian ethics) are not necessarily mutually exclusive. For example, T. M. Scanlon advances the idea that human rights, which are commonly considered a "deontological" concept, can only be justified with reference to the consequences of having those rights. Similarly, Robert Nozick argued for a theory that is mostly consequentialist, but incorporates inviolable "side-constraints" which restrict the sort of actions agents are permitted to do. Derek Parfit argued that in practice, when understood properly, rule consequentialism, Kantian deontology, and contractualism would all end up prescribing the same behavior.
+
+Forms of consequentialism
+
+Utilitarianism
+
+In summary, Jeremy Bentham states that people are driven by their interests and their fears, but their interests take precedence over their fears; their interests are carried out in accordance with how people view the consequences that might be involved with their interests. Happiness, in this account, is defined as the maximization of pleasure and the minimization of pain. It can be argued that the existence of phenomenal consciousness and "qualia" is required for the experience of pleasure or pain to have an ethical significance.
+
+Historically, hedonistic utilitarianism is the paradigmatic example of a consequentialist moral theory. This form of utilitarianism holds that what matters is the aggregate happiness; the happiness of everyone, and not the happiness of any particular person. John Stuart Mill, in his exposition of hedonistic utilitarianism, proposed a hierarchy of pleasures, meaning that the pursuit of certain kinds of pleasure is more highly valued than the pursuit of other pleasures. However, some contemporary utilitarians, such as Peter Singer, are concerned with maximizing the satisfaction of preferences, hence preference utilitarianism. Other contemporary forms of utilitarianism mirror the forms of consequentialism outlined below.
+
+Rule consequentialism
+
+In general, consequentialist theories focus on actions. However, this need not be the case. Rule consequentialism is a theory that is sometimes seen as an attempt to reconcile consequentialism with deontology, or rules-based ethics—and in some cases, this is stated as a criticism of rule consequentialism. Like deontology, rule consequentialism holds that moral behavior involves following certain rules. However, rule consequentialism chooses rules based on the consequences that the selection of those rules has. Rule consequentialism exists in the forms of rule utilitarianism and rule egoism.
+
+Various theorists are split as to whether the rules are the only determinant of moral behavior or not. For example, Robert Nozick held that a certain set of minimal rules, which he calls "side-constraints," are necessary to ensure appropriate actions. There are also differences as to how absolute these moral rules are. Thus, while Nozick's side-constraints are absolute restrictions on behavior, Amartya Sen proposes a theory that recognizes the importance of certain rules, but these rules are not absolute. That is, they may be violated if strict adherence to the rule would lead to much more undesirable consequences.
+
+One of the most common objections to rule-consequentialism is that it is incoherent, because it is based on the consequentialist principle that what we should be concerned with is maximizing the good, but then it tells us not to act to maximize the good, but to follow rules (even in cases where we know that breaking the rule could produce better results).
+
+In Ideal Code, Real World, Brad Hooker avoids this objection by not basing his form of rule-consequentialism on the ideal of maximizing the good. He writes:
+
+[T]he best argument for rule-consequentialism is not that it derives from an overarching commitment to maximise the good. The best argument for rule-consequentialism is that it does a better job than its rivals of matching and tying together our moral convictions, as well as offering us help with our moral disagreements and uncertainties.
+
+Derek Parfit described Hooker's book as the "best statement and defence, so far, of one of the most important moral theories."
+
+State consequentialism
+
+State consequentialism, also known as Mohist consequentialism, is an ethical theory that evaluates the moral worth of an action based on how much it contributes to the welfare of a state. According to the Stanford Encyclopedia of Philosophy, Mohist consequentialism, dating back to the 5th century BCE, is the "world's earliest form of consequentialism, a remarkably sophisticated version based on a plurality of intrinsic goods taken as constitutive of human welfare."
+
+Unlike utilitarianism, which views utility as the sole moral good, "the basic goods in Mohist consequentialist thinking are...order, material wealth, and increase in population." During the time of Mozi, war and famine were common, and population growth was seen as a moral necessity for a harmonious society. The "material wealth" of Mohist consequentialism refers to basic needs, like shelter and clothing; and "order" refers to Mozi's stance against warfare and violence, which he viewed as pointless and a threat to social stability. In The Cambridge History of Ancient China, Stanford sinologist David Shepherd Nivison writes that the moral goods of Mohism "are interrelated: more basic wealth, then more reproduction; more people, then more production and wealth...if people have plenty, they would be good, filial, kind, and so on unproblematically."
+
+The Mohists believed that morality is based on "promoting the benefit of all under heaven and eliminating harm to all under heaven." In contrast to Jeremy Bentham's views, state consequentialism is not utilitarian because it is not hedonistic or individualistic. The importance of outcomes that are good for the community outweigh the importance of individual pleasure and pain. The term state consequentialism has also been applied to the political philosophy of the Confucian philosopher Xunzi. On the other hand, "legalist" Han Fei "is motivated almost totally from the ruler's point of view."
+
+Ethical egoism
+
+Ethical egoism can be understood as a consequentialist theory according to which the consequences for the individual agent are taken to matter more than any other result. Thus, egoism will prescribe actions that may be beneficial, detrimental, or neutral to the welfare of others. Some, like Henry Sidgwick, argue that a certain degree of egoism promotes the general welfare of society for two reasons: because individuals know how to please themselves best, and because if everyone were an austere altruist then general welfare would inevitably decrease.
+
+Ethical altruism
+
+Ethical altruism can be seen as a consequentialist theory which prescribes that an individual take actions that have the best consequences for everyone except for himself. This was advocated by Auguste Comte, who coined the term altruism, and whose ethics can be summed up in the phrase "Live for others."
+
+Two-level consequentialism
+The two-level approach involves engaging in critical reasoning and considering all the possible ramifications of one's actions before making an ethical decision, but reverting to generally reliable moral rules when one is not in a position to stand back and examine the dilemma as a whole. In practice, this equates to adhering to rule consequentialism when one can only reason on an intuitive level, and to act consequentialism when in a position to stand back and reason on a more critical level.
+
+This position can be described as a reconciliation between act consequentialism—in which the morality of an action is determined by that action's effects—and rule consequentialism—in which moral behavior is derived from following rules that lead to positive outcomes.
+
+The two-level approach to consequentialism is most often associated with R. M. Hare and Peter Singer.
+
+Motive consequentialism
+Another consequentialist version is motive consequentialism, which looks at whether the state of affairs that results from the motive to choose an action is better or at least as good as each alternative state of affairs that would have resulted from alternative actions. This version gives relevance to the motive of an act and links it to its consequences. An act can therefore not be wrong if the decision to act was based on a right motive. A possible inference is that one can not be blamed for mistaken judgments if the motivation was to do good.
+
+Negative consequentialism
+
+Most consequentialist theories focus on promoting some sort of good consequences. However, negative utilitarianism lays out a consequentialist theory that focuses solely on minimizing bad consequences.
+
+One major difference between these two approaches is the agent's responsibility. Positive consequentialism demands that we bring about good states of affairs, whereas negative consequentialism requires that we avoid bad ones. Stronger versions of negative consequentialism will require active intervention to prevent bad and ameliorate existing harm. In weaker versions, simple forbearance from acts tending to harm others is sufficient. An example of this is the slippery-slope argument, which encourages others to avoid a specified act on the grounds that it may ultimately lead to undesirable consequences.
+
+Often "negative" consequentialist theories assert that reducing suffering is more important than increasing pleasure. Karl Popper, for example, claimed that "from the moral point of view, pain cannot be outweighed by pleasure." (While Popper is not a consequentialist per se, this is taken as a classic statement of negative utilitarianism.) When considering a theory of justice, negative consequentialists may use a statewide or global-reaching principle: the reduction of suffering (for the disadvantaged) is more valuable than increased pleasure (for the affluent or luxurious).
+
+Acts and omissions
+Since pure consequentialism holds that an action is to be judged solely by its result, most consequentialist theories hold that a deliberate action is no different from a deliberate decision not to act. This contrasts with the "acts and omissions doctrine", which is upheld by some medical ethicists and some religions: it asserts there is a significant moral distinction between acts and deliberate non-actions which lead to the same outcome. This contrast is brought out in issues such as voluntary euthanasia.
+
+Actualism and possibilism 
+
+The normative status of an action depends on its consequences according to consequentialism. The consequences of the actions of an agent may include other actions by this agent. Actualism and possibilism disagree on how later possible actions impact the normative status of the current action by the same agent. Actualists assert that it is only relevant what the agent would actually do later for assessing the value of an alternative. Possibilists, on the other hand, hold that we should also take into account what the agent could do, even if she would not do it.
+
+For example, assume that Gifre has the choice between two alternatives, eating a cookie or not eating anything. Having eaten the first cookie, Gifre could stop eating cookies, which is the best alternative. But after having tasted one cookie, Gifre would freely decide to continue eating cookies until the whole bag is finished, which would result in a terrible stomach ache and would be the worst alternative. Not eating any cookies at all, on the other hand, would be the second-best alternative. Now the question is: should Gifre eat the first cookie or not? Actualists are only concerned with the actual consequences. According to them, Gifre should not eat any cookies at all since it is better than the alternative leading to a stomach ache. Possibilists, however, contend that the best possible course of action involves eating the first cookie and this is therefore what Gifre should do.
+
+One counterintuitive consequence of actualism is that agents can avoid moral obligations simply by having an imperfect moral character. For example, a lazy person might justify rejecting a request to help a friend by arguing that, due to her lazy character, she would not have done the work anyway, even if she had accepted the request. By rejecting the offer right away, she managed at least not to waste anyone's time. Actualists might even consider her behavior praiseworthy since she did what, according to actualism, she ought to have done. This seems to be a very easy way to "get off the hook" that is avoided by possibilism. But possibilism has to face the objection that in some cases it sanctions and even recommends what actually leads to the worst outcome.
+
+Douglas W. Portmore has suggested that these and other problems of actualism and possibilism can be avoided by constraining what counts as a genuine alternative for the agent. On his view, it is a requirement that the agent has rational control over the event in question. For example, eating only one cookie and stopping afterward only is an option for Gifre if she has the rational capacity to repress her temptation to continue eating. If the temptation is irrepressible then this course of action is not considered to be an option and is therefore not relevant when assessing what the best alternative is. Portmore suggests that, given this adjustment, we should prefer a view very closely associated with possibilism called maximalism.
+
+Issues
+
+Action guidance
+One important characteristic of many normative moral theories such as consequentialism is the ability to produce practical moral judgements. At the very least, any moral theory needs to define the standpoint from which the goodness of the consequences are to be determined. What is primarily at stake here is the responsibility of the agent.
+
+The ideal observer
+One common tactic among consequentialists, particularly those committed to an altruistic (selfless) account of consequentialism, is to employ an ideal, neutral observer from which moral judgements can be made. John Rawls, a critic of utilitarianism, argues that utilitarianism, in common with other forms of consequentialism, relies on the perspective of such an ideal observer. The particular characteristics of this ideal observer can vary from an omniscient observer, who would grasp all the consequences of any action, to an ideally informed observer, who knows as much as could reasonably be expected, but not necessarily all the circumstances or all the possible consequences. Consequentialist theories that adopt this paradigm hold that right action is the action that will bring about the best consequences from this ideal observer's perspective.
+
+The real observer
+In practice, it is very difficult, and at times arguably impossible, to adopt the point of view of an ideal observer. Individual moral agents do not know everything about their particular situations, and thus do not know all the possible consequences of their potential actions. For this reason, some theorists have argued that consequentialist theories can only require agents to choose the best action in line with what they know about the situation. However, if this approach is naïvely adopted, then moral agents who, for example, recklessly fail to reflect on their situation, and act in a way that brings about terrible results, could be said to be acting in a morally justifiable way. Acting in a situation without first informing oneself of the circumstances of the situation can lead to even the most well-intended actions yielding miserable consequences. As a result, it could be argued that there is a moral imperative for agents to inform themselves as much as possible about a situation before judging the appropriate course of action. This imperative, of course, is derived from consequential thinking: a better-informed agent is able to bring about better consequences.
+
+Consequences for whom
+
+Moral action always has consequences for certain people or things. Varieties of consequentialism can be differentiated by the beneficiary of the good consequences. That is, one might ask "Consequences for whom?"
+
+Agent-focused or agent-neutral
+A fundamental distinction can be drawn between theories which require that agents act for ends perhaps disconnected from their own interests and drives, and theories which permit that agents act for ends in which they have some personal interest or motivation.  These are called "agent-neutral" and "agent-focused" theories respectively.
+
+Agent-neutral consequentialism ignores the specific value a state of affairs has for any particular agent. Thus, in an agent-neutral theory, an actor's personal goals do not count any more than anyone else's goals in evaluating what action the actor should take. Agent-focused consequentialism, on the other hand, focuses on the particular needs of the moral agent. Thus, in an agent-focused account, such as one that Peter Railton outlines, the agent might be concerned with the general welfare, but the agent is more concerned with the immediate welfare of herself and her friends and family.
+
+These two approaches could be reconciled by acknowledging the tension between an agent's interests as an individual and as a member of various groups, and seeking to somehow optimize among all of these interests. For example, it may be meaningful to speak of an action as being good for someone as an individual, but bad for them as a citizen of their town.
+
+Human-centered?
+Many consequentialist theories may seem primarily concerned with human beings and their relationships with other human beings. However, some philosophers argue that we should not limit our ethical consideration to the interests of human beings alone. Jeremy Bentham, who is regarded as the founder of utilitarianism, argues that animals can experience pleasure and pain, thus demanding that 'non-human animals' should be a serious object of moral concern.
+
+More recently, Peter Singer has argued that it is unreasonable that we do not give equal consideration to the interests of animals as to those of human beings when we choose the way we are to treat them. Such equal consideration does not necessarily imply identical treatment of humans and non-humans, any more than it necessarily implies identical treatment of all humans.
+
+Value of consequences
+One way to divide various consequentialisms is by the types of consequences that are taken to matter most, that is, which consequences count as good states of affairs. According to utilitarianism, a good action is one that results in an increase in pleasure, and the best action is one that results in the most pleasure for the greatest number. Closely related is eudaimonic consequentialism, according to which a full, flourishing life, which may or may not be the same as enjoying a great deal of pleasure, is the ultimate aim. Similarly, one might adopt an aesthetic consequentialism, in which the ultimate aim is to produce beauty. However, one might fix on non-psychological goods as the relevant effect. Thus, one might pursue an increase in material equality or political liberty instead of something like the more ephemeral "pleasure". Other theories adopt a package of several goods, all to be promoted equally. As the consequentialist approach contains an inherent assumption that the outcomes of a moral decision can be quantified in terms of "goodness" or "badness," or at least put in order of increasing preference, it is an especially suited moral theory for a probabilistic and decision theoretical approach.
+
+Virtue ethics
+Consequentialism can also be contrasted with aretaic moral theories such as virtue ethics. Whereas consequentialist theories posit that consequences of action should be the primary focus of our thinking about ethics, virtue ethics insists that it is the character rather than the consequences of actions that should be the focal point. Some virtue ethicists hold that consequentialist theories totally disregard the development and importance of moral character. For example, Philippa Foot argues that consequences in themselves have no ethical content, unless it has been provided by a virtue such as benevolence.
+
+However, consequentialism and virtue ethics need not be entirely antagonistic. Iain King has developed an approach that reconciles the two schools. Other consequentialists consider effects on the character of people involved in an action when assessing consequence. Similarly, a consequentialist theory may aim at the maximization of a particular virtue or set of virtues. Finally, following Foot's lead, one might adopt a sort of consequentialism that argues that virtuous activity ultimately produces the best consequences.
+
+Ultimate end
+The ultimate end is a concept in the moral philosophy of Max Weber, in which individuals act in a faithful, rather than rational, manner.
+
+Teleological ethics
+Teleological ethics (Greek: telos, 'end, purpose' + logos, 'science') is a broader class of views in moral philosophy which consequentialism falls under. In general, proponents of teleological ethics argue that the moral value of any act consists in its tendency to produce things of intrinsic value, meaning that an act is right if and only if it, or the rule under which it falls, produces, will probably produce, or is intended to produce, a greater balance of good over evil than any alternative act. This concept is exemplified by the famous aphorism, "the end justifies the means," variously attributed to Machiavelli or Ovid i.e. if a goal is morally important enough, any method of achieving it is acceptable.
+
+Teleological theories differ among themselves on the nature of the particular end that actions ought to promote. The two major families of views in teleological ethics are virtue ethics and consequentialism. Teleological ethical theories are often discussed in opposition to deontological ethical theories, which hold that acts themselves are inherently good or bad, rather than good or bad because of extrinsic factors (such as the act's consequences or the moral character of the person who acts).
+
+Etymology
+
+The term consequentialism was coined by G. E. M. Anscombe in her essay "Modern Moral Philosophy" in 1958, to describe what she saw as the central error of certain moral theories, such as those propounded by Mill and Sidgwick.
+
+The phrase and concept of "the end justifies the means" are at least as old as the first century BC. Ovid wrote in his Heroides that Exitus acta probat ("The result justifies the deed").
+
+Criticisms
+G. E. M. Anscombe objects to the consequentialism of Sidgwick on the grounds that the moral worth of an action is premised on the predictive capabilities of the individual, relieving them of the responsibility for the "badness" of an act should they "make out a case for not having foreseen" negative consequences.
+
+The future amplification of the effects of small decisions is an important factor that makes it more difficult to predict the ethical value of consequences, even though most would agree that only predictable consequences are charged with a moral responsibility.
+
+Bernard Williams has argued that consequentialism is alienating because it requires moral agents to put too much distance between themselves and their own projects and commitments. Williams argues that consequentialism requires moral agents to take a strictly impersonal view of all actions, since it is only the consequences, and not who produces them, that are said to matter. Williams argues that this demands too much of moral agents—since (he claims) consequentialism demands that they be willing to sacrifice any and all personal projects and commitments in any given circumstance in order to pursue the most beneficent course of action possible. He argues further that consequentialism fails to make sense of intuitions that it can matter whether or not someone is personally the author of a particular consequence. For example, that participating in a crime can matter, even if the crime would have been committed anyway, or would even have been worse, without the agent's participation.
+
+Some consequentialists—most notably Peter Railton—have attempted to develop a form of consequentialism that acknowledges and avoids the objections raised by Williams. Railton argues that Williams's criticisms can be avoided by adopting a form of consequentialism in which moral decisions are to be determined by the sort of life that they express. On his account, the agent should choose the sort of life that will, on the whole, produce the best overall effects.
+
+Notable consequentialists
+
+ R. M. Adams (born 1937)
+ Jonathan Baron (born 1944)
+ Jeremy Bentham (1748–1832)
+ Richard B. Brandt (1910–1997)
+ John Dewey (1857–1952)
+ Julia Driver (1961- )
+ Milton Friedman (1912–2006)
+ David Friedman (born 1945)
+ William Godwin (1756–1836)
+ R. M. Hare (1919–2002)
+ John Harsanyi (1920–2000)
+ Brad Hooker (born 1957)
+ Francis Hutcheson (1694–1746)
+ Shelly Kagan (born 1963)
+ Niccolò Machiavelli (1469–1527)
+ James Mill (1773–1836)
+ John Stuart Mill (1806–1873)
+ G. E. Moore (1873–1958)
+ Mozi (470–391 BCE)
+ Philip Pettit (born 1945)
+ Peter Railton (born 1950)
+ Henry Sidgwick (1838–1900)
+ Peter Singer (born 1946)
+ J. J. C. Smart (1920–2012)
+
+Notable utilitarian consequentialists
+
+See also
+
+ Charvaka
+ Demandingness objection
+ Dharma-yuddha
+ Effective altruism
+ Instrumental and intrinsic value
+ Lesser of two evils principle
+ Mental reservation
+ Mohism
+ Omission bias
+ Principle of double effect
+ Situational ethics
+ Utilitarianism
+ Welfarism
+
+References
+
+Further reading
+
+External links
+
+University of Texas. Ethics Unwrapped – Consequentialism
+
+ 
+Normative ethics
+Teleology
+Ethical theories
+Conscription (also called the draft in the United States) is the state-mandated enlistment of people in a national service, mainly a military service. Conscription dates back to antiquity and it continues in some countries to the present day under various names. The modern system of near-universal national conscription for young men dates to the French Revolution in the 1790s, where it became the basis of a very large and powerful military. Most European nations later copied the system in peacetime, so that men at a certain age would serve 1–8 years on active duty and then transfer to the reserve force.
+
+Conscription is controversial for a range of reasons, including conscientious objection to military engagements on religious or philosophical grounds; political objection, for example to service for a disliked government or unpopular war; sexism, in that historically men have been subject to the draft in the most cases; and ideological objection, for example, to a perceived violation of individual rights. Those conscripted may evade service, sometimes by leaving the country, and seeking asylum in another country. Some selection systems accommodate these attitudes by providing alternative service outside combat-operations roles or even outside the military, such as  (alternative civil service) in Finland,  (compulsory community service) in Austria, Germany and Switzerland. Several countries conscript male soldiers not only for armed forces, but also for paramilitary agencies, which are dedicated to police-like domestic only service like internal troops, border guards or non-combat rescue duties like civil defence.
+
+As of 2023, many states no longer conscript their citizens, relying instead upon professional militaries with volunteers. The ability to rely on such an arrangement, however, presupposes some degree of predictability with regard to both war-fighting requirements and the scope of hostilities. Many states that have abolished conscription still, therefore, reserve the power to resume conscription during wartime or times of crisis. States involved in wars or interstate rivalries are most likely to implement conscription, and democracies are less likely than autocracies to implement conscription. With a few exceptions, such as Singapore and Egypt, former British colonies are less likely to have conscription, as they are influenced by British anti-conscription norms that can be traced back to the English Civil War; the United Kingdom abolished conscription in 1960.
+
+History
+
+In pre-modern times
+
+Ilkum
+Around the reign of Hammurabi (1791–1750 BC), the Babylonian Empire used a system of conscription called Ilkum. Under that system those eligible were required to serve in the royal army in time of war. During times of peace they were instead required to provide labour for other activities of the state. In return for this service, people subject to it gained the right to hold land. It is possible that this right was not to hold land per se but specific land supplied by the state.
+
+Various forms of avoiding military service are recorded. While it was outlawed by the Code of Hammurabi, the hiring of substitutes appears to have been practiced both before and after the creation of the code. Later records show that Ilkum commitments could become regularly traded. In other places, people simply left their towns to avoid their Ilkum service. Another option was to sell Ilkum lands and the commitments along with them. With the exception of a few exempted classes, this was forbidden by the Code of Hammurabi.
+
+Medieval levies
+
+Under the feudal laws on the European continent, landowners in the medieval period enforced a system whereby all peasants, freemen commoners and noblemen aged 15 to 60 living in the countryside or in urban centers, were summoned for military duty when required by either the king or the local lord, bringing along the weapons and armor according to their wealth. These levies fought as footmen, sergeants, and men at arms under local superiors appointed by the king or the local lord such as the arrière-ban in France. Arrière-ban denoted a general levy, where all able-bodied males age 15 to 60 living in the Kingdom of France were summoned to go to war by the King (or the constable and the marshals). Men were summoned by the bailiff (or the sénéchal in the south). Bailiffs were military and political administrators installed by the King to steward and govern a specific area of a province following the king's commands and orders. The men summoned in this way were then summoned by the lieutenant who was the King's representative and military governor over an entire province comprising many bailiwicks, seneschalties and castellanies. All men from the richest noble to the poorest commoner were summoned under the arrière-ban and they were supposed to present themselves to the King or his officials.
+
+In medieval Scandinavia the leiðangr (Old Norse), leidang (Norwegian), leding, (Danish), ledung (Swedish), lichting (Dutch), expeditio (Latin) or sometimes leþing (Old English), was a levy of free farmers conscripted into coastal fleets for seasonal excursions and in defence of the realm.
+
+The bulk of the Anglo-Saxon English army, called the fyrd, was composed of part-time English soldiers drawn from the freemen of each county. In the 690s laws of Ine of Wessex, three levels of fines are imposed on different social classes for neglecting military service.
+
+Some modern writers claim military service in Europe was restricted to the landowning minor nobility. These thegns were the land-holding aristocracy of the time and were required to serve with their own armour and weapons for a certain number of days each year. The historian David Sturdy has cautioned about regarding the fyrd as a precursor to a modern national army composed of all ranks of society, describing it as a "ridiculous fantasy":
+
+The persistent old belief that peasants and small farmers gathered to form a national army or fyrd is a strange delusion dreamt up by antiquarians in the late eighteenth or early nineteenth centuries to justify universal military conscription.
+
+In feudal Japan the shogun decree of 1393 exempted money lenders from religious or military levies, in return for a yearly tax. The Ōnin War weakened the shogun and levies were imposed again on money lenders. This overlordism was arbitrary and unpredictable for commoners. While the money lenders were not poor, several overlords tapped them for income. Levies became necessary for the survival of the overlord, allowing the lord to impose taxes at will. These levies included tansen tax on agricultural land for ceremonial expenses. Yakubu takumai tax was raised on all land to rebuild the Ise Grand Shrine, and munabechisen tax was imposed on all houses. At the time, land in Kyoto was acquired by commoners through usury and in 1422 the shogun threatened to repossess the land of those commoners who failed to pay their levies.
+
+Military slavery
+
+The system of military slaves was widely used in the Middle East, beginning with the creation of the corps of Turkic slave-soldiers (ghulams or mamluks) by the Abbasid caliph al-Mu'tasim in the 820s and 830s. The Turkish troops soon came to dominate the government, establishing a pattern throughout the Islamic world of a ruling military class, often separated by ethnicity, culture and even religion by the mass of the population, a paradigm that found its apogee in the Mamluks of Egypt and the Janissary corps of the Ottoman Empire, institutions that survived until the early 19th century.
+
+In the middle of the 14th century, Ottoman Sultan Murad I developed personal troops to be loyal to him, with a slave army called the Kapıkulu. The new force was built by taking Christian children from newly conquered lands, especially from the far areas of his empire, in a system known as the devşirme (translated "gathering" or "converting"). The captive children were forced to convert to Islam. The Sultans had the young boys trained over several years. Those who showed special promise in fighting skills were trained in advanced warrior skills, put into the sultan's personal service, and turned into the Janissaries, the elite branch of the Kapıkulu. A number of distinguished military commanders of the Ottomans, and most of the imperial administrators and upper-level officials of the Empire, such as Pargalı İbrahim Pasha and Sokollu Mehmet Paşa, were recruited in this way. By 1609, the Sultan's Kapıkulu forces increased to about 100,000.
+
+In later years, Sultans turned to the Barbary Pirates to supply their Jannissaries corps. Their attacks on ships off the coast of Africa or in the Mediterranean, and subsequent capture of able-bodied men for ransom or sale provided some captives for the Sultan's system. Starting in the 17th century, Christian families living under the Ottoman rule began to submit their sons into the Kapikulu system willingly, as they saw this as a potentially invaluable career opportunity for their children. Eventually the Sultan turned to foreign volunteers from the warrior clans of Circassians in southern Russia to fill his Janissary armies. As a whole the system began to break down, the loyalty of the Jannissaries became increasingly suspect. Mahmud II forcibly disbanded the Janissary corps in 1826.
+
+Similar to the Janissaries in origin and means of development were the Mamluks of Egypt in the Middle Ages. The Mamluks were usually captive non-Muslim Iranian and Turkish children who had been kidnapped or bought as slaves from the Barbary coasts. The Egyptians assimilated and trained the boys and young men to become Islamic soldiers who served the Muslim caliphs and the Ayyubid sultans during the Middle Ages. The first mamluks served the Abbasid caliphs in 9th-century Baghdad. Over time they became a powerful military caste. On more than one occasion, they seized power, for example, ruling Egypt from 1250 to 1517.
+
+From 1250 Egypt had been ruled by the Bahri dynasty of Kipchak origin. Slaves from the Caucasus served in the army and formed an elite corps of troops. They eventually revolted in Egypt to form the Burgi dynasty. The Mamluks' excellent fighting abilities, massed Islamic armies, and overwhelming numbers succeeded in overcoming the Christian Crusader fortresses in the Holy Land. The Mamluks were the most successful defence against the Mongol Ilkhanate of Persia and Iraq from entering Egypt.
+
+On the western coast of Africa, Berber Muslims captured non-Muslims to put to work as laborers. They generally converted the younger people to Islam and many became quite assimilated. In Morocco, the Berber looked south rather than north. The Moroccan Sultan Moulay Ismail, called "the Bloodthirsty" (1672–1727), employed a corps of 150,000 black slaves, called his Black Guard. He used them to coerce the country into submission.
+
+In modern times
+
+Modern conscription, the massed military enlistment of national citizens (), was devised during the French Revolution, to enable the Republic to defend itself from the attacks of European monarchies. Deputy Jean-Baptiste Jourdan gave its name to the 5 September 1798 Act, whose first article stated: "Any Frenchman is a soldier and owes himself to the defense of the nation." It enabled the creation of the , what Napoleon Bonaparte called "the nation in arms", which overwhelmed European professional armies that often numbered only into the low tens of thousands. More than 2.6 million men were inducted into the French military in this way between the years 1800 and 1813.
+
+The defeat of the Prussian Army in particular shocked the Prussian establishment, which had believed it was invincible after the victories of Frederick the Great. The Prussians were used to relying on superior organization and tactical factors such as order of battle to focus superior troops against inferior ones. Given approximately equivalent forces, as was generally the case with professional armies, these factors showed considerable importance. However, they became considerably less important when the Prussian armies faced Napoleon's forces that outnumbered their own in some cases by more than ten to one. Scharnhorst advocated adopting the , the military conscription used by France. The  was the beginning of short-term compulsory service in Prussia, as opposed to the long-term conscription previously used.
+
+In the Russian Empire, the military service time "owed" by serfs was 25 years at the beginning of the 19th century. In 1834 it was decreased to 20 years. The recruits were to be not younger than 17 and not older than 35. In 1874 Russia introduced universal conscription in the modern pattern, an innovation only made possible by the abolition of serfdom in 1861. New military law decreed that all male Russian subjects, when they reached the age of 20, were eligible to serve in the military for six years.
+
+In the decades prior to World War I universal conscription along broadly Prussian lines became the norm for European armies, and those modeled on them. By 1914 the only substantial armies still completely dependent on voluntary enlistment were those of Britain and the United States. Some colonial powers such as France reserved their conscript armies for home service while maintaining professional units for overseas duties.
+
+World Wars
+
+The range of eligible ages for conscripting was expanded to meet national demand during the World Wars.
+In the United States, the Selective Service System drafted men for World War I initially in an age range from 21 to 30 but expanded its eligibility in 1918 to an age range of 18 to 45. In the case of a widespread mobilization of forces where service includes homefront defense, ages of conscripts may range much higher, with the oldest conscripts serving in roles requiring lesser mobility.
+
+Expanded-age conscription was common during the Second World War: in Britain, it was commonly known as "call-up" and extended to age 51. Nazi Germany termed it  ("People's Storm") and included children as young as 16 and men as old as 60. During the Second World War, both Britain and the Soviet Union conscripted women. The United States was on the verge of drafting women into the Nurse Corps because it anticipated it would need the extra personnel for its planned invasion of Japan. However, the Japanese surrendered and the idea was abandoned.
+
+During the Great Patriotic War, the Red Army conscripted nearly 30 million men.
+
+Arguments against conscription
+
+Sexism
+
+Men's rights activists, feminists, and opponents of discrimination against men have criticized military conscription, or compulsory military service, as sexist. The National Coalition for Men, a men's rights group, sued the US Selective Service System in 2019, leading to it being declared unconstitutional by a US Federal Judge. The federal district judge's opinion was unanimously overturned on appeal to the U.S. Court of Appeals for the 5th Circuit. In September 2021, the House of Representatives passed the annual Defense Authorization Act, which included an amendment that states that "all Americans between the ages of 18 and 25 must register for selective service." This amendment omitted the word "male," which would have extended a potential draft to women; however, the amendment was removed before the National Defense Authorization Act was passed.
+
+Feminists have argued, first,  that military conscription is sexist because wars serve the interests of what they view as the patriarchy; second, that the military is a sexist institution and that conscripts are therefore indoctrinated into sexism; and third, that conscription of men normalizes violence by men as socially acceptable. Feminists have been organizers and participants in resistance to conscription in several countries.
+
+Conscription has also been criticized on the ground that, historically, only men have been subjected to conscription. Men who opt out or are deemed unfit for military service must often perform alternative service, such as Zivildienst in Austria, Germany and Switzerland, or pay extra taxes, whereas women do not have these obligations. In the US, men who do not register with the Selective Service cannot apply for citizenship, receive federal financial aid, grants or loans, be employed by the federal government, be admitted to public colleges or universities, or, in some states, obtain a driver's license.
+
+Involuntary servitude
+
+Many American libertarians oppose conscription and call for the abolition of the Selective Service System, arguing that impressment of individuals into the armed forces amounts to involuntary servitude. For example, Ron Paul, a former U.S. Libertarian Party presidential nominee,  has said that conscription "is wrongly associated with patriotism, when it really represents slavery and involuntary servitude". The philosopher Ayn Rand opposed conscription, opining that "of all the statist violations of individual rights in a mixed economy, the military draft is the worst. It is an abrogation of rights. It negates man's fundamental right—the right to life—and establishes the fundamental principle of statism: that a man's life belongs to the state, and the state may claim it by compelling him to sacrifice it in battle."
+
+In 1917, a number of radicals and anarchists, including Emma Goldman, challenged the new draft law in federal court, arguing that it was a violation of the Thirteenth Amendment's prohibition against slavery and involuntary servitude. However, the Supreme Court unanimously upheld the constitutionality of the draft act in the case of Arver v. United States on 7 January 1918, on the ground that the Constitution gives Congress the power to declare war and to raise and support armies. The Court also relied on the principle of the reciprocal rights and duties of citizens. "It may not be doubted that the very conception of a just government in its duty to the citizen includes the reciprocal obligation of the citizen to render military service in case of need and the right to compel."
+
+Economic
+It can be argued that in a cost-to-benefit ratio, conscription during peacetime is not worthwhile. Months or years of service performed by the most fit and capable subtract from the productivity of the economy; add to this the cost of training them, and in some countries paying them. Compared to these extensive costs, some would argue there is very little benefit; if there ever was a war then conscription and basic training could be completed quickly, and in any case there is little threat of a war in most countries with conscription. In the United States, every male resident is required by law to register with the Selective Service System within 30 days following his 18th birthday and be available for a draft; this is often accomplished automatically by a motor vehicle department during licensing or by voter registration.
+
+According to Milton Friedman the cost of conscription can be related to the parable of the broken window in anti-draft arguments. The cost of the work, military service, does not disappear even if no salary is paid. The work effort of the conscripts is effectively wasted, as an unwilling workforce is extremely inefficient. The impact is especially severe in wartime, when civilian professionals are forced to fight as amateur soldiers. Not only is the work effort of the conscripts wasted and productivity lost, but professionally skilled conscripts are also difficult to replace in the civilian workforce. Every soldier conscripted in the army is taken away from his civilian work, and away from contributing to the economy which funds the military. This may be less a problem in an agrarian or pre-industrialized state where the level of education is generally low, and where a worker is easily replaced by another. However, this is potentially more costly in a post-industrial society where educational levels are high and where the workforce is sophisticated and a replacement for a conscripted specialist is difficult to find. Even more dire economic consequences result if the professional conscripted as an amateur soldier is killed or maimed for life; his work effort and productivity are lost.
+
+Arguments for conscription
+
+Political and moral motives
+
+Jean Jacques Rousseau argued vehemently against professional armies since he believed that it was the right and privilege of every citizen to participate to the defense of the whole society and that it was a mark of moral decline to leave the business to professionals. He based his belief upon the development of the Roman Republic, which came to an end at the same time as the Roman Army changed from a conscript to a professional force. Similarly, Aristotle linked the division of armed service among the populace intimately with the political order of the state. Niccolò Machiavelli argued strongly for conscription and saw the professional armies, made up of mercenary units, as the cause of the failure of societal unity in Italy.
+
+Other proponents, such as William James, consider both mandatory military and national service as ways of instilling maturity in young adults. Some proponents, such as Jonathan Alter and Mickey Kaus, support a draft in order to reinforce social equality, create social consciousness, break down class divisions and allow young adults to immerse themselves in public enterprise. Charles Rangel called for the reinstatement of the draft during the Iraq War not because he seriously expected it to be adopted but to stress how the socioeconomic restratification meant that very few children of upper-class Americans served in the all-volunteer American armed forces.
+
+Economic and resource efficiency
+
+It is estimated by the British military that in a professional military, a company deployed for active duty in peacekeeping corresponds to three inactive companies at home. Salaries for each are paid from the military budget. In contrast, volunteers from a trained reserve are in their civilian jobs when they are not deployed.
+
+It was more financially beneficial for less-educated young Portuguese men born in 1967 to participate in conscription than to participate in the highly competitive job market with men of the same age who continued to higher education.
+
+Drafting of women 
+
+Throughout history, women have only been conscripted to join armed forces in a few countries, in contrast to the universal practice of conscription from among the male population. The traditional view has been that military service is a test of manhood and a rite of passage from boyhood into manhood. In recent years, this position has been challenged on the basis that it violates gender equality, and some countries, especially in Europe, have extended conscription obligations to women.
+
+Nations that in present-day actively draft women into military service are Bolivia, Chad, Eritrea, Israel, Mozambique, Norway, North Korea
+and Sweden.
+
+Norway introduced female conscription in 2015, making it the first NATO member to have a legally compulsory national service for both men and women. In practice only motivated volunteers are selected to join the army in Norway.
+
+Sweden introduced female conscription in 2010, but it was not activated until 2017. This made Sweden the second nation in Europe to draft women, and the second in the world to draft women on the same formal terms as men.
+
+Israel has universal female conscription, although it is possible to avoid service by claiming a religious exemption and over a third of Israeli women do so.
+
+Finland introduced voluntary female conscription in 1995, giving women between the ages of 18 and 29 an option to complete their military service alongside men.
+
+Sudanese law allows for conscription of women, but this is not implemented in practice.
+In the United Kingdom during World War II, beginning in 1941, women were brought into the scope of conscription but, as all women with dependent children were exempt and many women were informally left in occupations such as nursing or teaching, the number conscripted was relatively few.
+
+In the Soviet Union, there was never conscription of women for the armed forces, but the severe disruption of normal life and the high proportion of civilians affected by World War II after the German invasion attracted many volunteers for "The Great Patriotic War". Medical doctors of both sexes could and would be conscripted (as officers). Also, the Soviet university education system required Department of Chemistry students of both sexes to complete an ROTC course in NBC defense, and such female reservist officers could be conscripted in times of war. The United States came close to drafting women into the Nurse Corps in preparation for a planned invasion of Japan.
+
+In 1981 in the United States, several men filed lawsuit in the case Rostker v. Goldberg, alleging that the Selective Service Act of 1948 violates the Due Process Clause of the Fifth Amendment by requiring that only men register with the Selective Service System (SSS). The Supreme Court eventually upheld the Act, stating that "the argument for registering women was based on considerations of equity, but Congress was entitled, in the exercise of its constitutional powers, to focus on the question of military need, rather than 'equity.'" In 2013, Judge Gray H. Miller of the United States District Court for the Southern District of Texas ruled that the Service's men-only requirement was unconstitutional, as while at the time Rostker was decided, women were banned from serving in combat, the situation had since changed with the 2013 and 2015 restriction removals. Miller's opinion was reversed by the Fifth Circuit, stating that only the Supreme Court could overturn the Supreme Court precedence from Rostker. The Supreme Court considered but declined to review the Fifth Circuit's ruling in June 2021. In an opinion authored by Justice Sonia Sotomayor and joined by Justices Stephen Breyer and Brett Kavanaugh, the three justices agreed that the male-only draft was likely unconstitutional given the changes in the military's stance on the roles, but because Congress had been reviewing and evaluating legislation to eliminate its male-only draft requirement via the National Commission on Military, National, and Public Service (NCMNPS) since 2016, it would have been inappropriate for the Court to act at that time.
+
+On 1 October 1999, in Taiwan, the Judicial Yuan of the Republic of China in its Interpretation 490 considered that the physical differences between males and females and the derived role differentiation in their respective social functions and lives would not make drafting only males a violation of the Constitution of the Republic of China. Though women are not conscripted in Taiwan, transsexual persons are exempt.
+
+In 2018, the Netherlands started including women in its draft registration system, although conscription is not currently enforced for either sex.
+
+Conscientious objection
+
+A conscientious objector is an individual whose personal beliefs are incompatible with military service, or, more often, with any role in the armed forces. In some countries, conscientious objectors have special legal status, which augments their conscription duties. For example, Sweden allows conscientious objectors to choose a service in the weapons-free civil defense.
+
+The reasons for refusing to serve in the military are varied. Some people are conscientious objectors for religious reasons. In particular, the members of the historic peace churches are pacifist by doctrine, and Jehovah's Witnesses, while not strictly pacifists, refuse to participate in the armed forces on the ground that they believe that Christians should be neutral in international conflicts.
+
+By country
+
+Austria 
+Every male citizen of the Republic of Austria from the age of 17 up to 50, specialists up to 65 years is liable to military service. However, besides mobilization, conscription calls to a six-month long basic military training in the  can be done up to the age of 35. For men refusing to undergo this training, a nine-month lasting community service is mandatory.
+
+Belgium 
+Belgium abolished the conscription in 1994. The last conscripts left active service in February 1995. To this day (2019), a small minority of the Belgian citizens supports the idea of reintroducing military conscription, for both men and women.
+
+Bulgaria 
+Bulgaria had mandatory military service for males above 18 until conscription was ended in 2008. Due to a shortfall in the army of some 5500 soldiers, parts of the former ruling coalition have expressed their support for the return of mandatory military service, most notably Krasimir Karakachanov. Opposition towards this idea from the main coalition partner, GERB, saw a compromise in 2018, where instead of mandatory military service, Bulgaria could have possibly introduced a voluntary military service by 2019 where young citizens can volunteer for a period of 6 to 9 months, receiving a basic wage. However this has not gone forward.
+
+Cambodia 
+Since the signing of the Peace Accord in 1993, there has been no official conscription in Cambodia. Also the National Assembly has repeatedly rejected to reintroduce it due to popular resentment. However, in November 2006, it was reintroduced. Although mandatory for all males between the ages of 18 and 30 (with some sources stating up to age 35), less than 20% of those in the age group are recruited amidst a downsizing of the armed forces.
+
+China 
+
+Universal conscription in China dates back to the State of Qin, which eventually became the Qin Empire of 221 BC. Following unification, historical records show that a total of 300,000 conscript soldiers and 500,000 conscript labourers constructed the Great Wall of China. In the following dynasties, universal conscription was abolished and reintroduced on numerous occasions.
+
+, universal military conscription is theoretically mandatory in China, and reinforced by law. However, due to the large population of China and large pool of candidates available for recruitment, the People's Liberation Army has always had sufficient volunteers, so conscription has not been required in practice.
+
+Cuba
+
+Cyprus 
+
+Military service in Cyprus has a deep rooted history entangled with the Cyprus problem. Military service in the Cypriot National Guard is mandatory for all male citizens of the Republic of Cyprus, as well as any male non-citizens born of a parent of Greek Cypriot descent, lasting from the 1 January of the year in which they turn 18 years of age to 31 December, of the year in which they turn 50. All male residents of Cyprus who are of military age (16 and over) are required to obtain an exit visa from the Ministry of Defense. Currently, military conscription in Cyprus lasts up to 14 months.
+
+Denmark 
+
+Conscription is known in Denmark since the Viking Age, where one man out of every 10 had to serve the king. Frederick IV of Denmark changed the law in 1710 to every 4th man. The men were chosen by the landowner and it was seen as a penalty.
+
+Since 12 February 1849, every physically fit man must do military service. According to §81 in the Constitution of Denmark, which was promulgated in 1849: Every male person able to carry arms shall be liable with his person to contribute to the defence of his country under such rules as are laid down by Statute. — Constitution of DenmarkThe legislation about compulsory military service is articulated in the Danish Law of Conscription. National service takes 4–12 months. It is possible to postpone the duty when one is still in full-time education. Every male turning 18 will be drafted to the 'Day of Defence', where they will be introduced to the Danish military and their health will be tested. Physically unfit persons are not required to do military service. It is only compulsory for men, while women are free to choose to join the Danish army. Almost all of the men have been volunteers in recent years, 96.9% of the total number of recruits having been volunteers in the 2015 draft.
+
+After lottery, one can become a conscientious objector. Total objection (refusal from alternative civilian service) results in up to 4 months jailtime according to the law. However, in 2014 a Danish man, who signed up for the service and objected later, got only 14 days of home arrest. In many countries the act of desertion (objection after signing up) is punished harder than objecting the compulsory service.
+
+Finland 
+
+Conscription in Finland is part of a general compulsion for national military service for all adult males (; ) defined in the 127§ of the Constitution of Finland.
+
+Conscription can take the form of military or of civilian service. According to Finnish Defence Forces 2011 data slightly under 80% of Finnish males turned 30 had entered and finished the military service. The number of female volunteers to annually enter armed service had stabilised at approximately 300. The service period is 165, 255 or 347 days for the rank and file conscripts and 347 days for conscripts trained as NCOs or reserve officers. The length of civilian service is always twelve months. Those electing to serve unarmed in duties where unarmed service is possible serve either nine or twelve months, depending on their training.
+
+Any Finnish male citizen who refuses to perform both military and civilian service faces a penalty of 173 days in prison, minus any served days. Such sentences are usually served fully in prison, with no parole. Jehovah's Witnesses are no longer exempted from service as of 27 February 2019. The inhabitants of demilitarized Åland are exempt from military service. By the Conscription Act of 1951, they are, however, required to serve a time at a local institution, like the coast guard. However, until such service has been arranged, they are freed from service obligation. The non-military service of Åland has not been arranged since the introduction of the act, and there are no plans to institute it. The inhabitants of Åland can also volunteer for military service on the mainland. As of 1995, women are permitted to serve on a voluntary basis and pursue careers in the military after their initial voluntary military service.
+
+The military service takes place in Finnish Defence Forces or in the Finnish Border Guard. All services of the Finnish Defence Forces train conscripts. However, the Border Guard trains conscripts only in land-based units, not in coast guard detachments or in the Border Guard Air Wing. Civilian service may take place in the Civilian Service Center in Lapinjärvi or in an accepted non-profit organization of educational, social or medical nature.
+
+Germany 
+
+Between 1956 and 2011 conscription was mandatory for all male citizens in the German federal armed forces (), as well as for the Federal Border Guard () in the 1970s (see Border Guard Service). With the end of the Cold War the German government drastically reduced the size of its armed forces. The low demand for conscripts led to the suspension of compulsory conscription in 2011. Since then, only volunteer professionals serve in the .
+
+Greece 
+
+Since 1914 Greece has been enforcing mandatory military service, currently lasting 12 months (but historically up to 36 months) for all adult men. Citizens discharged from active service are normally placed in the reserve and are subject to periodic recalls of 1–10 days at irregular intervals.
+
+Universal conscription was introduced in Greece during the military reforms of 1909, although various forms of selective conscription had been in place earlier. In more recent years, conscription was associated with the state of general mobilisation declared on 20 July 1974, due to the crisis in Cyprus (the mobilisation was formally ended on 18 December 2002).
+
+The duration of military service has historically ranged between 9 and 36 months depending on various factors either particular to the conscript or the political situation in the Eastern Mediterranean. Although women are employed by the Greek army as officers and soldiers, they are not obliged to enlist. Soldiers receive no health insurance, but they are provided with medical support during their army service, including hospitalization costs.
+
+Greece enforces conscription for all male citizens aged between 19 and 45. In August 2009, duration of the mandatory service was reduced from 12 months as it was before to 9 months for the army, but remained at 12 months for the navy and the air force. The number of conscripts allocated to the latter two has been greatly reduced aiming at full professionalization. Nevertheless, mandatory military service at the army was once again raised to 12 months in March 2021, unless served in units in Evros or the North Aegean islands where duration was kept at 9 months. Although full professionalization is under consideration, severe financial difficulties and mismanagement, including delays and reduced rates in the hiring of professional soldiers, as well as widespread abuse of the deferment process, has resulted in the postponement of such a plan.
+
+Iran 
+
+In Iran, all men who reach the age of 18 must do about two years of compulsory military service in the Iranian army or Islamic Revolutionary Guard Corps. Before the 1979 revolution, women could serve in the military. However, after the establishment of the Islamic Republic, some Ayatollahs considered women's military service to be disrespectful to women by the Pahlavi government and banned women's military service in Iran. Therefore, Iranian women and girls were completely exempted from military service, which caused Iranian men and boys to oppose.
+
+In Iran, men who refuse to go to military service are deprived of their citizenship rights, such as employment, health insurance, continuing their education at university, finding a job, going abroad, opening a bank account, etc. Iranian men have so far opposed mandatory military service and demanded that military service in Iran become a job like in other countries, but the Islamic Republic is opposed to this demand. Some Iranian military commanders consider the elimination of conscription or improving the condition of soldiers as a security issue and one of Ali Khamenei's powers as the commander-in-chief of the armed forces, so they treat it with caution. In Iran, usually wealthy people are exempted from conscription. Some other men can be exempted from conscription due to their fathers serving in the Iran-Iraq war.
+
+Israel 
+
+There is a mandatory military service for all men and women in Israel who are fit and 18 years old. Men must serve 32 months while women serve 24 months, with the vast majority of conscripts being Jewish.
+
+Some Israeli citizens are exempt from mandatory service:
+ Non-Jewish Arab citizens 
+ permanent residents (non-civilian) such as the Druze of the Golan Heights
+ Male Ultra-Orthodox Jews can apply for deferment to study in Yeshiva and the deferment tends to become an exemption, although some do opt to serve in the military
+ Female religious Jews, as long as they declare they are unable to serve due to religious grounds. Most of whom opt for the alternative of volunteering in the national service Sherut Leumi
+
+All of the exempt above are eligible to volunteer to the Israel Defense Forces (IDF), as long as they declare so.
+
+Male Druze and male Circassian Israeli citizens are liable for conscription, in accordance with agreement set by their community leaders (their community leaders however signed a clause in which all female Druze and female Circassian are exempt from service).
+
+A few male Bedouin Israeli citizens choose to enlist to the Israeli military in every draft (despite their Muslim-Arab background that exempt them from conscription).
+
+South Africa 
+
+There was mandatory military conscription for all white men in South Africa from 1968 until the end of apartheid in 1994. Under South African defense law, young white men had to undergo two years' continuous military training after they leave school, after which they had to serve 720 days in occasional military duty over the next 12 years. The End Conscription Campaign began in 1983 in opposition to the requirement. In the same year the National Party government announced plans to extend conscription to white immigrants in the country.
+
+South Korea
+
+Lithuania 
+
+Lithuania abolished its conscription in 2008. In May 2015, the Lithuanian parliament voted to reintroduce conscription and the conscripts started their training in August 2015. From 2015 to 2017 there were enough volunteers to avoid drafting civilians.
+
+Luxembourg 
+Luxembourg practiced military conscription from 1948 until 1967.
+
+Moldova 
+Moldova, which currently has male conscription, has announced plans to abolish the practice. Moldova's Defense Ministry announced that a plan which stipulates the gradual elimination of military conscription will be implemented starting from the autumn of 2018.
+
+Netherlands 
+
+Conscription, which was called "Service Duty" () in the Netherlands, was first employed in 1810 by French occupying forces. Napoleon's brother Louis Bonaparte, who was King of Holland from 1806 to 1810, had tried to introduce conscription a few years earlier, unsuccessfully. Every man aged 20 years or older had to enlist. By means of drawing lots it was decided who had to undertake service in the French army. It was possible to arrange a substitute against payment.
+
+Later on, conscription was used for all men over the age of 18. Postponement was possible, due to study, for example. Conscientious objectors could perform an alternative civilian service instead of military service. For various reasons, this forced military service was criticized at the end of the twentieth century. Since the Cold War was over, so was the direct threat of a war. Instead, the Dutch army was employed in more and more peacekeeping operations. The complexity and danger of these missions made the use of conscripts controversial. Furthermore, the conscription system was thought to be unfair as only men were drafted.
+
+In the European part of Netherlands, compulsory attendance has been officially suspended since 1 May 1997. Between 1991 and 1996, the Dutch armed forces phased out their conscript personnel and converted to an all-professional force. The last conscript troops were inducted in 1995, and demobilized in 1996. The suspension means that citizens are no longer forced to serve in the armed forces, as long as it is not required for the safety of the country. Since then, the Dutch army has become an all-professional force. However, to this day, every male and – from January 2020 onward – female citizen aged 17 gets a letter in which they are told that they have been registered but do not have to present themselves for service.
+
+Norway 
+
+Conscription was constitutionally established the 12 April 1907 with Kongeriket Norges Grunnlov § 119.. 
+, Norway currently employs a weak form of mandatory military service for men and women. In practice recruits are not forced to serve, instead only those who are motivated are selected. About 60,000 Norwegians are available for conscription every year, but only 8,000 to 10,000 are conscripted. Since 1985, women have been able to enlist for voluntary service as regular recruits. On 14 June 2013 the Norwegian Parliament voted to extend conscription to women, making Norway the first NATO member and first European country to make national service compulsory for both sexes. In earlier times, up until at least the early 2000s, all men aged 19–44 were subject to mandatory service, with good reasons required to avoid becoming drafted. There is a right of conscientious objection.
+
+In addition to the military service, the Norwegian government draft a total of 8,000 men and women between 18 and 55 to non-military Civil defence duty. (Not to be confused with Alternative civilian service.) Former service in the military does not exclude anyone from later being drafted to the Civil defence, but an upper limit of total 19 months of service applies. Neglecting mobilisation orders to training exercises and actual incidents, may impose fines.
+
+Serbia 
+
+, Serbia no longer practises mandatory military service. Prior to this, mandatory military service lasted 6 months for men. Conscientious objectors could however opt for 9 months of civil service instead.
+
+On 15 December 2010, the Parliament of Serbia voted to suspend mandatory military service. The decision fully came into force on 1 January 2011.
+
+Sweden 
+
+Sweden had conscription () for men between 1901 and 2010. During the last few decades it was selective. Since 1980, women have been allowed to sign up by choice, and, if passing the tests, do military training together with male conscripts. Since 1989 women have been allowed to serve in all military positions and units, including combat.
+
+In 2010, conscription was made gender-neutral, meaning both women and men would be conscripted on equal terms. The conscription system was simultaneously deactivated in peacetime. Seven years later, referencing increased military threat, the Swedish Government reactivated military conscription. Beginning in 2018, both men and women are conscripted.
+
+Taiwan 
+
+Taiwan, officially the Republic of China (ROC), maintains an active conscription system. All qualified male citizens of military age are now obligated to receive 4-month of military training. In December 2022, President Tsai Ing-wen led the government to announce the reinstatement of the mandatory 1-year active duty military service from January 2024.
+
+United Kingdom 
+
+The United Kingdom introduced conscription to full-time military service for the first time in January 1916 (the eighteenth month of World War I) and abolished it in 1920. Ireland, then part of the United Kingdom, was exempted from the original 1916 military service legislation, and although further legislation in 1918 gave power for an extension of conscription to Ireland, the power was never put into effect.
+
+Conscription was reintroduced in 1939, in the lead up to World War II, and continued in force until 1963. Northern Ireland was exempted from conscription legislation throughout the whole period.
+
+In all, eight million men were conscripted during both World Wars, as well as several hundred thousand younger single women. The introduction of conscription in May 1939, before the war began, was partly due to pressure from the French, who emphasized the need for a large British army to oppose the Germans. From early 1942 unmarried women age 19–30 were conscripted. Most were sent to the factories, but they could volunteer for the Auxiliary Territorial Service (ATS) and other women's services. Some women served in the Women's Land Army: initially volunteers but later conscription was introduced. However, women who were already working in a skilled job considered helpful to the war effort, such as a General Post Office telephonist, were told to continue working as before. None was assigned to combat roles unless she volunteered. By 1943 women were liable to some form of directed labour up to age 51. During the Second World War, 1.4 million British men volunteered for service and 3.2 million were conscripted. Conscripts comprised 50% of the Royal Air Force, 60% of the Royal Navy and 80% of the British Army.
+
+The abolition of conscription in Britain was announced on 4 April 1957, by new prime minister Harold Macmillan, with the last conscripts being recruited three years later.
+
+United States 
+
+Conscription in the United States ended in 1973, but males aged between 18 and 25 are required to register with the Selective Service System to enable a reintroduction of conscription if necessary. President Gerald Ford had suspended mandatory draft registration in 1975, but President Jimmy Carter reinstated that requirement when the Soviet Union intervened in Afghanistan five years later. Consequently, Selective Service registration is still required of almost all young men. There have been no prosecutions for violations of the draft registration law since 1986. Males between the ages of 17 and 45, and female members of the US National Guard may be conscripted for federal militia service pursuant to 10 U.S. Code § 246 and the Militia Clauses of the United States Constitution.
+
+In February 2019, the United States District Court for the Southern District of Texas ruled that male-only conscription registration breached the Fourteenth Amendment's equal protection clause. In National Coalition for Men v. Selective Service System, a case brought by non-profit men's rights organisation the National Coalition for Men against the U.S. Selective Service System, judge Gray H. Miller issued a declaratory judgement that the male-only registration requirement is unconstitutional, though did not specify what action the government should take. That ruling was reversed by the Fifth Circuit. In June 2021, the U.S. Supreme Court declined to review the decision by the Court of Appeals.
+
+Other countries 
+ Conscription in Australia
+ Conscription in Canada
+ Conscription in Egypt
+ Conscription in France
+ Conscription in Gibraltar
+ Conscription in Malaysia
+ Conscription in Mexico
+ Conscription in New Zealand
+ Conscription in Russia
+ Conscription in Singapore
+ Conscription in South Korea
+ Conscription in Switzerland
+ Conscription in Turkey
+ Conscription in Ukraine
+ Conscription in the Ottoman Empire
+ Conscription in the Russian Empire
+
+See also
+
+ Civil conscription
+ Civilian Public Service
+ Corvée
+ Economic conscription
+ Quota System
+ Male expendability
+ Pospolite ruszenie, mass mobilization in Poland
+ Bevin Boys
+ Counter-recruitment
+ Draft evasion
+ Ephebic Oath
+ Home front during World War I
+ Home front during World War II
+ List of countries by number of military and paramilitary personnel
+ Military recruitment
+ Timeline of women's participation in warfare
+ War resister
+
+References
+
+Further reading
+
+ Burk, James (April 1989). "Debating the Draft in America", Armed Forces and Society p. vol. 15: pp. 431–48.
+ Challener, Richard D. The French theory of the nation in arms, 1866–1939 (1955)
+ Chambers, John Whiteclay. To Raise an Army: The Draft Comes to Modern America (1987)
+ 
+ Flynn, George Q. (1998 33(1): 5–20). "Conscription and Equity in Western Democracies, 1940–75", Journal of Contemporary History in JSTOR
+ 
+ 
+  Looks at citizens' responses to military conscription in several democracies since the French Revolution.
+ 
+ Krueger, Christine, and Sonja Levsen, eds. War Volunteering in Modern Times: From the French Revolution to the Second World War (Palgrave Macmillan 2011)
+ 
+ Littlewood, David. "Conscription in Britain, New Zealand, Australia and Canada during the Second World War", History Compass 18#4 (2020) online
+
+External links
+
+ 
+Political theories
+Citizenship
+Catherine Grace "Cady" Coleman (born December 14, 1960) is an American chemist, engineer, former United States Air Force colonel, and retired NASA astronaut. She is a veteran of two Space Shuttle missions, and departed the International Space Station on May 23, 2011, as a crew member of Expedition 27 after logging 159 days in space.
+
+Education 
+Coleman graduated from Wilbert Tucker Woodson High School, Fairfax, Virginia, in 1978. In 1978–1979, she was an exchange student at Røyken Upper Secondary School in Norway with the AFS Intercultural Programs. She received a B.S. degree in chemistry from the Massachusetts Institute of Technology (MIT) in 1983 and was commissioned as graduate of the Air Force Reserve Officer Training Corps (Air Force ROTC)., then received a Ph.D. degree in polymer science and engineering from the University of Massachusetts Amherst in 1991. She was advised by Professor Thomas J. McCarthy on her doctorate. As an undergraduate, she was a member of the intercollegiate rowing crew and was a resident of Baker House.
+
+Military career 
+Coleman continued to pursue her PhD at the University of Massachusetts Amherst as a second lieutenant. In 1988, she entered active duty at Wright-Patterson Air Force Base as a research chemist. During her work, she participated as a surface analysis consultant on the NASA Long Duration Exposure Facility experiment. In 1991, she received her doctorate in polymer science and engineering. She retired from the Air Force in November 2009 as a colonel.
+
+NASA career 
+
+Coleman was selected by NASA in 1992 to join the NASA Astronaut Corps. In 1995, she was a member of the STS-73 crew on the scientific mission USML-2 with experiments including biotechnology, combustion science, and the physics of fluids. During the flight, she reported to Houston Mission Control that she had spotted an Unidentified flying object (UFO). She also trained for the mission STS-83 to be the backup for Donald A. Thomas; however, as he recovered on time, she did not fly that mission. STS-93 was Coleman's second space flight in 1999. She was mission specialist in charge of deploying the Chandra X-ray Observatory and its Inertial Upper Stage out of the shuttle's cargo bay.
+
+Coleman served as Chief of Robotics for the Astronaut Office, to include robotic arm operations and training for all Space Shuttle and International Space Station missions. In October 2004, Coleman served as an aquanaut during the NEEMO 7 mission aboard the Aquarius underwater laboratory, living and working underwater for eleven days.
+
+Coleman was assigned as a backup U.S. crew member for Expeditions 19, 20 and 21 and served as a backup crew member for Expeditions 24 and 25 as part of her training for Expedition 26.
+
+Coleman launched on December 15, 2010 (December 16, 2010 Baikonur time), aboard Soyuz TMA-20 to join the Expedition 26 mission aboard the International Space Station.  She retired from NASA on December 1, 2016.
+
+Spaceflight experience 
+
+STS-73 on Space Shuttle Columbia (October 20 to November 5, 1995) was the second United States Microgravity Laboratory (USML-2) mission. The mission focused on materials science, biotechnology, combustion science, the physics of fluids, and numerous scientific experiments housed in the pressurized Spacelab module. In completing her first space flight, Coleman orbited the Earth 256 times, traveled over 6 million miles, and logged a total of 15 days, 21 hours, 52 minutes and 21 seconds in space.
+
+STS-93 on Columbia (July 22 to 27, 1999) was a five-day mission during which Coleman was the lead mission specialist for the deployment of the Chandra X-ray Observatory. Designed to conduct comprehensive studies of the universe, the telescope will enable scientists to study exotic phenomena such as exploding stars, quasars, and black holes. Mission duration was 118 hours and 50 minutes.
+
+Soyuz TMA-20 / Expedition 26/27 (December 15, 2010, to May 23, 2011) was an extended duration mission to the International Space Station.
+
+Personal 
+Coleman is married to glass artist Josh Simpson who lives in Massachusetts. They have one son. She is part of the band Bandella, which also includes fellow NASA astronaut Stephen Robinson, Canadian astronaut Chris Hadfield, and Micki Pettit (wife of the astronaut Donald Pettit). Coleman is a flute player and has taken several flutes with her to the ISS, including a pennywhistle from Paddy Moloney of The Chieftains, an old Irish flute from Matt Molloy of The Chieftains, and a flute from Ian Anderson of Jethro Tull (band). On February 15, 2011, she played one of the instruments live from orbit on National Public Radio. On April 12, 2011, she played live via video link for the audience of Jethro Tull's show in Russia in honour of the 50th anniversary of Yuri Gagarin's flight, playing in orbit while Anderson played on the ground. On May 13 of that year, Coleman delivered a taped commencement address to the class of 2011 at the University of Massachusetts Amherst.
+
+As do many other astronauts, Coleman holds an amateur radio license (callsign: KC5ZTH).
+
+As of 2015, she is also known to be working as a guest speaker at the Baylor College of Medicine, for the children's program 'Saturday Morning Science'.
+
+In 2018, she gave a graduation address to Carter Lynch, the sole graduate of Cuttyhunk Elementary School, on Cuttyhunk Island, Massachusetts.
+
+In 2019 the Irish postal service An Post issued a set of commemorative stamps for the 50th anniversary of the Apollo Moon landings, Catherine Coleman is featured alongside fellow astronauts Neil Armstrong, Michael Collins, and Eileen Collins.
+
+References
+
+External links 
+
+ Cady Coleman Video produced by Makers: Women Who Make America
+ 
+
+1960 births
+Living people
+Aquanauts
+Women astronauts
+United States Air Force astronauts
+NASA civilian astronauts
+Military personnel from Charleston, South Carolina
+People from Fairfax, Virginia
+People from Franklin County, Massachusetts
+Massachusetts Institute of Technology School of Science alumni
+University of Massachusetts Amherst College of Engineering alumni
+Female officers of the United States Air Force
+21st-century American chemists
+American chemical engineers
+American women engineers
+Amateur radio people
+Amateur radio women
+Female explorers
+Scientists from Virginia
+United States Air Force colonels
+Space Shuttle program astronauts
+Wilbert Tucker Woodson High School alumni
+MIT Engineers athletes
+21st-century American women
+Military personnel from Massachusetts
+The cervix (: cervices) or cervix uteri (Latin, "neck of the uterus") is the lower part of the uterus (womb) in the human female reproductive system. The cervix is usually 2 to 3 cm long (~1 inch) and roughly cylindrical in shape, which changes during pregnancy. The narrow, central cervical canal runs along its entire length, connecting the uterine cavity and the lumen of the vagina. The opening into the uterus is called the internal os, and the opening into the vagina is called the external os. The lower part of the cervix, known as the vaginal portion of the cervix (or ectocervix), bulges into the top of the vagina. The cervix has been documented anatomically since at least the time of Hippocrates, over 2,000 years ago.
+
+The cervical canal is a passage through which sperm must travel to fertilize an egg cell after sexual intercourse. Several methods of contraception, including cervical caps and cervical diaphragms, aim to block or prevent the passage of sperm through the cervical canal. Cervical mucus is used in several methods of fertility awareness, such as the Creighton model and Billings method, due to its changes in consistency throughout the menstrual period. During vaginal childbirth, the cervix must flatten and dilate to allow the fetus to progress along the birth canal. Midwives and doctors use the extent of the dilation of the cervix to assist decision-making during childbirth.
+
+The cervical canal is lined with a single layer of column-shaped cells, while the ectocervix is covered with multiple layers of cells topped with flat cells. The two types of epithelia meet at the squamocolumnar junction. Infection with the human papillomavirus (HPV) can cause changes in the epithelium, which can lead to cancer of the cervix. Cervical cytology tests can often detect cervical cancer and its precursors, and enable early successful treatment. Ways to avoid HPV include avoiding sex, using condoms, and HPV vaccination. HPV vaccines, developed in the early 21st century, reduce the risk of cervical cancer by preventing infections from the main cancer-causing strains of HPV.
+
+Structure 
+
+The cervix is part of the female reproductive system. Around  in length, it is the lower narrower part of the uterus continuous above with the broader upper part—or body—of the uterus. The lower end of the cervix bulges through the anterior wall of the vagina, and is referred to as the vaginal portion of cervix (or ectocervix) while the rest of the cervix above the vagina is called the supravaginal portion of cervix. A central canal, known as the cervical canal, runs along its length and connects the cavity of the body of the uterus with the lumen of the vagina. The openings are known as the internal os and external orifice of the uterus (or external os), respectively. The mucosa lining the cervical canal is known as the endocervix, and the mucosa covering the ectocervix is known as the exocervix. The cervix has an inner mucosal layer, a thick layer of smooth muscle, and posteriorly the supravaginal portion has a serosal covering consisting of connective tissue and overlying peritoneum.
+
+In front of the upper part of the cervix lies the bladder, separated from it by cellular connective tissue known as parametrium, which also extends over the sides of the cervix. To the rear, the supravaginal cervix is covered by peritoneum, which runs onto the back of the vaginal wall and then turns upwards and onto the rectum, forming the recto-uterine pouch. The cervix is more tightly connected to surrounding structures than the rest of the uterus.
+
+The cervical canal varies greatly in length and width between women or over the course of a woman's life, and it can measure 8 mm (0.3 inch) at its widest diameter in premenopausal adults. It is wider in the middle and narrower at each end. The anterior and posterior walls of the canal each have a vertical fold, from which ridges run diagonally upwards and laterally. These are known as palmate folds, due to their resemblance to a palm leaf. The anterior and posterior ridges are arranged in such a way that they interlock with each other and close the canal. They are often effaced after pregnancy.
+
+The ectocervix (also known as the vaginal portion of the cervix) has a convex, elliptical shape and projects into the cervix between the anterior and posterior vaginal fornices. On the rounded part of the ectocervix is a small, depressed external opening, connecting the cervix with the vagina. The size and shape of the ectocervix and the external opening (external os) can vary according to age, hormonal state, and whether childbirth has taken place. In women who have not had a vaginal delivery, the external opening is small and circular, and in women who have had a vaginal delivery, it is slit-like. On average, the ectocervix is  long and  wide.
+
+Blood is supplied to the cervix by the descending branch of the uterine artery and drains into the uterine vein. The pelvic splanchnic nerves, emerging as S2–S3, transmit the sensation of pain from the cervix to the brain. These nerves travel along the uterosacral ligaments, which pass from the uterus to the anterior sacrum.
+
+Three channels facilitate lymphatic drainage from the cervix. The anterior and lateral cervix drains to nodes along the uterine arteries, travelling along the cardinal ligaments at the base of the broad ligament to the external iliac lymph nodes and ultimately the paraaortic lymph nodes. The posterior and lateral cervix drains along the uterine arteries to the internal iliac lymph nodes and ultimately the paraaortic lymph nodes, and the posterior section of the cervix drains to the obturator and presacral lymph nodes. However, there are variations as lymphatic drainage from the cervix travels to different sets of pelvic nodes in some people. This has implications in scanning nodes for involvement in cervical cancer.
+
+After menstruation and directly under the influence of estrogen, the cervix undergoes a series of changes in position and texture. During most of the menstrual cycle, the cervix remains firm, and is positioned low and closed. However, as ovulation approaches, the cervix becomes softer and rises to open in response to the higher levels of estrogen present. These changes are also accompanied by changes in cervical mucus, described below.
+
+Development 
+
+As a component of the female reproductive system, the cervix is derived from the two paramesonephric ducts (also called Müllerian ducts), which develop around the sixth week of embryogenesis. During development, the outer parts of the two ducts fuse, forming a single urogenital canal that will become the vagina, cervix and uterus. The cervix grows in size at a smaller rate than the body of the uterus, so the relative size of the cervix over time decreases, decreasing from being much larger than the body of the uterus in fetal life, twice as large during childhood, and decreasing to its adult size, smaller than the uterus, after puberty. Previously it was thought that during fetal development, the original squamous epithelium of the cervix is derived from the urogenital sinus and the original columnar epithelium is derived from the paramesonephric duct. The point at which these two original epithelia meet is called the original squamocolumnar junction. New studies show, however, that all the cervical as well as large part of the vaginal epithelium are derived from Müllerian duct tissue and that phenotypic differences might be due to other causes.
+
+Histology 
+
+The endocervical mucosa is about  thick and lined with a single layer of columnar mucous cells. It contains numerous tubular mucous glands, which empty viscous alkaline mucus into the lumen. In contrast, the ectocervix is covered with nonkeratinized stratified squamous epithelium, which resembles the squamous epithelium lining the vagina. The junction between these two types of epithelia is called the squamocolumnar junction. Underlying both types of epithelium is a tough layer of collagen. The mucosa of the endocervix is not shed during menstruation. The cervix has more fibrous tissue, including collagen and elastin, than the rest of the uterus.
+
+In prepubertal girls, the functional squamocolumnar junction is present just within the cervical canal. Upon entering puberty, due to hormonal influence, and during pregnancy, the columnar epithelium extends outward over the ectocervix as the cervix everts. Hence, this also causes the squamocolumnar junction to move outwards onto the vaginal portion of the cervix, where it is exposed to the acidic vaginal environment. The exposed columnar epithelium can undergo physiological metaplasia and change to tougher metaplastic squamous epithelium in days or weeks, which is very similar to the original squamous epithelium when mature. The new squamocolumnar junction is therefore internal to the original squamocolumnar junction, and the zone of unstable epithelium between the two junctions is called the transformation zone of the cervix. Histologically, the transformation zone is generally defined as surface squamous epithelium with surface columnar epithelium or stromal glands/crypts, or both.
+
+After menopause, the uterine structures involute and the functional squamocolumnar junction moves into the cervical canal.
+
+Nabothian cysts (or Nabothian follicles) form in the transformation zone where the lining of metaplastic epithelium has replaced mucous epithelium and caused a strangulation of the outlet of some of the mucous glands. A buildup of mucus in the glands forms Nabothian cysts, usually less than about  in diameter, which are considered physiological rather than pathological. Both gland openings and Nabothian cysts are helpful to identify the transformation zone.
+
+Function
+
+Fertility 
+
+The cervical canal is a pathway through which sperm enter the uterus after being induced by estradiol after sexual intercourse, and some forms of artificial insemination. Some sperm remains in cervical crypts, infoldings of the endocervix, which act as a reservoir, releasing sperm over several hours and maximising the chances of fertilisation. A theory states the cervical and uterine contractions during orgasm draw semen into the uterus. Although the "upsuck theory" has been generally accepted for some years, it has been disputed due to lack of evidence, small sample size, and methodological errors.
+
+Some methods of fertility awareness, such as the Creighton model and the Billings method involve estimating a woman's periods of fertility and infertility by observing physiological changes in her body. Among these changes are several involving the quality of her cervical mucus: the sensation it causes at the vulva, its elasticity (Spinnbarkeit), its transparency, and the presence of ferning.
+
+Cervical mucus 
+
+Several hundred glands in the endocervix produce 20–60 mg of cervical mucus a day, increasing to 600 mg around the time of ovulation. It is viscous because it contains large proteins known as mucins. The viscosity and water content varies during the menstrual cycle; mucus is composed of around 93% water, reaching 98% at midcycle. These changes allow it to function either as a barrier or a transport medium to spermatozoa. It contains electrolytes such as calcium, sodium, and potassium; organic components such as glucose, amino acids, and soluble proteins; trace elements including zinc, copper, iron, manganese, and selenium; free fatty acids; enzymes such as amylase; and prostaglandins. Its consistency is determined by the influence of the hormones estrogen and progesterone. At midcycle around the time of ovulation—a period of high estrogen levels— the mucus is thin and serous to allow sperm to enter the uterus and is more alkaline and hence more hospitable to sperm. It is also higher in electrolytes, which results in the "ferning" pattern that can be observed in drying mucus under low magnification; as the mucus dries, the salts crystallize, resembling the leaves of a fern. The mucus has a stretchy character described as Spinnbarkeit most prominent around the time of ovulation.
+
+At other times in the cycle, the mucus is thick and more acidic due to the effects of progesterone. This "infertile" mucus acts as a barrier to keep sperm from entering the uterus. Women taking an oral contraceptive pill also have thick mucus from the effects of progesterone. Thick mucus also prevents pathogens from interfering with a nascent pregnancy.
+
+A cervical mucus plug, called the operculum, forms inside the cervical canal during pregnancy. This provides a protective seal for the uterus against the entry of pathogens and against leakage of uterine fluids. The mucus plug is also known to have antibacterial properties. This plug is released as the cervix dilates, either during the first stage of childbirth or shortly before. It is visible as a blood-tinged mucous discharge.
+
+Childbirth 
+
+The cervix plays a major role in childbirth. As the fetus descends within the uterus in preparation for birth, the presenting part, usually the head, rests on and is supported by the cervix. As labour progresses, the cervix becomes softer and shorter, begins to dilate, and withdraws to face the anterior of the body. The support the cervix provides to the fetal head starts to give way when the uterus begins its contractions. During childbirth, the cervix must dilate to a diameter of more than  to accommodate the head of the fetus as it descends from the uterus to the vagina. In becoming wider, the cervix also becomes shorter, a phenomenon known as effacement.
+
+Along with other factors, midwives and doctors use the extent of cervical dilation to assist decision making during childbirth. Generally, the active first stage of labour, when the uterine contractions become strong and regular, begins when the cervical dilation is more than . The second phase of labor begins when the cervix has dilated to , which is regarded as its fullest dilation, and is when active pushing and contractions push the baby along the birth canal leading to the birth of the baby. The number of past vaginal deliveries is a strong factor in influencing how rapidly the cervix is able to dilate in labour. The time taken for the cervix to dilate and efface is one factor used in reporting systems such as the Bishop score, used to recommend whether interventions such as a forceps delivery, induction, or Caesarean section should be used in childbirth.
+
+Cervical incompetence is a condition in which shortening of the cervix due to dilation and thinning occurs, before term pregnancy. Short cervical length is the strongest predictor of preterm birth.
+
+Contraception 
+
+Several methods of contraception involve the cervix. Cervical diaphragms are reusable, firm-rimmed plastic devices inserted by a woman prior to intercourse that cover the cervix. Pressure against the walls of the vagina maintain the position of the diaphragm, and it acts as a physical barrier to prevent the entry of sperm into the uterus, preventing fertilisation. Cervical caps are a similar method, although they are smaller and adhere to the cervix by suction. Diaphragms and caps are often used in conjunction with spermicides. In one year, 12% of women using the diaphragm will undergo an unintended pregnancy, and with optimal use this falls to 6%. Efficacy rates are lower for the cap, with 18% of women undergoing an unintended pregnancy, and 10–13% with optimal use. Most types of progestogen-only pills are effective as a contraceptive because they thicken cervical mucus, making it difficult for sperm to pass along the cervical canal. In addition, they may also sometimes prevent ovulation. In contrast, contraceptive pills that contain both oestrogen and progesterone, the combined oral contraceptive pills, work mainly by preventing ovulation. They also thicken cervical mucus and thin the lining of the uterus, enhancing their effectiveness.
+
+Clinical significance
+
+Cancer
+
+In 2008, cervical cancer was the third-most common cancer in women worldwide, with rates varying geographically from less than one to more than 50 cases per 100,000 women. It is a leading cause of cancer-related death in poor countries, where delayed diagnosis leading to poor outcomes is common. The introduction of routine screening has resulted in fewer cases of (and deaths from) cervical cancer, however this has mainly taken place in developed countries. Most developing countries have limited or no screening, and 85% of the global burden occurring there.
+
+Cervical cancer nearly always involves human papillomavirus (HPV) infection. HPV is a virus with numerous strains, several of which predispose to precancerous changes in the cervical epithelium, particularly in the transformation zone, which is the most common area for cervical cancer to start. HPV vaccines, such as Gardasil and Cervarix, reduce the incidence of cervical cancer, by inoculating against the viral strains involved in cancer development.
+
+Potentially precancerous changes in the cervix can be detected by cervical screening, using methods including a Pap smear (also called a cervical smear), in which epithelial cells are scraped from the surface of the cervix and examined under a microscope. The colposcope, an instrument used to see a magnified view of the cervix, was invented in 1925. The Pap smear was developed by Georgios Papanikolaou in 1928. A LEEP procedure using a heated loop of platinum to excise a patch of cervical tissue was developed by Aurel Babes in 1927. In some parts of the developed world including the UK, the Pap test has been superseded with liquid-based cytology.
+
+A cheap, cost-effective and practical alternative in poorer countries is visual inspection with acetic acid (VIA). Instituting and sustaining cytology-based programs in these regions can be difficult, due to the need for trained personnel, equipment and facilities and difficulties in follow-up. With VIA, results and treatment can be available on the same day. As a screening test, VIA is comparable to cervical cytology in accurately identifying precancerous lesions.
+
+A result of dysplasia is usually further investigated, such as by taking a cone biopsy, which may also remove the cancerous lesion. Cervical intraepithelial neoplasia is a possible result of the biopsy and represents dysplastic changes that may eventually progress to invasive cancer. Most cases of cervical cancer are detected in this way, without having caused any symptoms. When symptoms occur, they may include vaginal bleeding, discharge, or discomfort.
+
+Inflammation
+
+Inflammation of the cervix is referred to as cervicitis. This inflammation may be of the endocervix or ectocervix. When associated with the endocervix, it is associated with a mucous vaginal discharge and sexually transmitted infections such as chlamydia and gonorrhoea. As many as half of pregnant women having a gonorrheal infection of the cervix are asymptomatic. Other causes include overgrowth of the commensal flora of the vagina. When associated with the ectocervix, inflammation may be caused by the herpes simplex virus. Inflammation is often investigated through directly visualising the cervix using a speculum, which may appear whiteish due to exudate, and by taking a Pap smear and examining for causal bacteria. Special tests may be used to identify particular bacteria. If the inflammation is due to a bacterium, then antibiotics may be given as treatment.
+
+Anatomical abnormalities
+Cervical stenosis is an abnormally narrow cervical canal, typically associated with trauma caused by removal of tissue for investigation or treatment of cancer, or cervical cancer itself. Diethylstilbestrol, used from 1938 to 1971 to prevent preterm labour and miscarriage, is also strongly associated with the development of cervical stenosis and other abnormalities in the daughters of the exposed women. Other abnormalities include: vaginal adenosis, in which the squamous epithelium of the ectocervix becomes columnar; cancers such as clear cell adenocarcinomas; cervical ridges and hoods; and development of a cockscomb cervix appearance, which is the condition wherein, as the name suggests, the cervix of the uterus is shaped like a cockscomb. About one third of women born to diethylstilbestrol-treated mothers (i.e. in-utero exposure) develop a cockscomb cervix.
+
+Enlarged folds or ridges of cervical stroma (fibrous tissues) and epithelium constitute a cockscomb cervix. Similarly, cockscomb polyps lining the cervix are usually considered or grouped into the same overarching description. It is in and of itself considered a benign abnormality; its presence, however is usually indicative of DES exposure, and as such women who experience these abnormalities should be aware of their increased risk of associated pathologies.
+
+Cervical agenesis is a rare congenital condition in which the cervix completely fails to develop, often associated with the concurrent failure of the vagina to develop. Other congenital cervical abnormalities exist, often associated with abnormalities of the vagina and uterus. The cervix may be duplicated in situations such as bicornuate uterus and uterine didelphys.
+
+Cervical polyps, which are benign overgrowths of endocervical tissue, if present, may cause bleeding, or a benign overgrowth may be present in the cervical canal. Cervical ectropion refers to the horizontal overgrowth of the endocervical columnar lining in a one-cell-thick layer over the ectocervix.
+
+In mammals
+Female marsupials have paired uteri and cervices. Most eutherian (placental) mammal species have a single cervix and single, bipartite or bicornuate uterus. Lagomorphs, rodents, aardvarks and hyraxes have a duplex uterus and two cervices. Lagomorphs and rodents share many morphological characteristics and are grouped together in the clade Glires. Anteaters of the family myrmecophagidae are unusual in that they lack a defined cervix; they are thought to have lost the characteristic rather than other mammals developing a cervix on more than one lineage. In domestic pigs, the cervix contains a series of five interdigitating pads that hold the boar's corkscrew-shaped penis during copulation.
+
+Etymology and pronunciation
+The word cervix () came to English from Latin, where it means "neck", and like its Germanic counterpart, it can refer not only to the neck [of the body] but also to an analogous narrowed part of an object. The cervix uteri (neck of the uterus) is thus the uterine cervix, but in English the word cervix used alone usually refers to it. Thus the adjective cervical may refer either to the neck (as in cervical vertebrae or cervical lymph nodes) or to the uterine cervix (as in cervical cap or cervical cancer).
+
+Latin cervix came from the Proto-Indo-European root ker-, referring to a "structure that projects". Thus, the word cervix is linguistically related to the English word "horn", the Persian word for "head" ( sar), the Greek word for "head" ( koruphe), and the Welsh and Romanian words for "deer" (, Romanian: cerb).
+
+The cervix was documented in anatomical literature in at least the time of Hippocrates; cervical cancer was first described more than 2,000 years ago, with descriptions provided by both Hippocrates and Aretaeus. However, there was some variation in word sense among early writers, who used the term to refer to both the cervix and the internal uterine orifice. The first attested use of the word to refer to the cervix of the uterus was in 1702.
+
+References
+
+Citations
+
+Cited texts
+
+External links 
+ 
+
+Human female reproductive system
+Women's health
+In computing, a compiler is a computer program that translates computer code written in one programming language (the source language) into another language (the target language). The name "compiler" is primarily used for programs that translate source code from a high-level programming language to a low-level programming language (e.g. assembly language, object code, or machine code) to create an executable program.
+
+There are many different types of compilers which produce output in different useful forms. A cross-compiler  produces code for a different CPU or operating system than the one on which the cross-compiler itself runs.  A bootstrap compiler is often a temporary compiler, used for compiling a more permanent or better optimised compiler for a language.
+
+Related software include, a program that translates from a low-level language to a higher level one is a decompiler; a program that translates between high-level languages, usually called a source-to-source compiler or transpiler.  A language rewriter is usually a program that translates the form of expressions without a change of language.  A compiler-compiler is a compiler that produces a compiler (or part of one), often in a generic and reusable way so as to be able to produce many differing compilers.
+
+A compiler is likely to perform some or all of the following operations, often called phases: preprocessing, lexical analysis, parsing, semantic analysis (syntax-directed translation), conversion of input programs to an intermediate representation, code optimization and machine specific code generation. Compilers generally implement these phases as modular components, promoting efficient design and correctness of transformations of source input to target output. Program faults caused by incorrect compiler behavior can be very difficult to track down and work around; therefore, compiler implementers invest significant effort to ensure compiler correctness.
+
+Compilers are not the only language processor used to transform source programs. An interpreter is computer software that transforms and then executes the indicated operations. The translation process influences the design of computer languages, which leads to a preference of compilation or interpretation. In theory, a programming language can have both a compiler and an interpreter. In practice, programming languages tend to be associated with just one (a compiler or an interpreter).
+
+History 
+
+Theoretical computing concepts developed by scientists, mathematicians, and engineers formed the basis of digital modern computing development during World War II. Primitive binary languages evolved because digital devices only understand ones and zeros and the circuit patterns in the underlying machine architecture. In the late 1940s, assembly languages were created to offer a more workable abstraction of the computer architectures. Limited memory capacity of early computers led to substantial technical challenges when the first compilers were designed. Therefore, the compilation process needed to be divided into several small programs. The front end programs produce the analysis products used by the back end programs to generate target code. As computer technology provided more resources, compiler designs could align better with the compilation process.
+
+It is usually more productive for a programmer to use a high-level language, so the development of high-level languages followed naturally from the capabilities offered by digital computers. High-level languages are formal languages that are strictly defined by their syntax and semantics which form the high-level language architecture. Elements of these formal languages include:
+ Alphabet, any finite set of symbols;
+ String, a finite sequence of symbols;
+ Language, any set of strings on an alphabet.
+
+The sentences in a language may be defined by a set of rules called a grammar.
+
+Backus–Naur form (BNF) describes the syntax of "sentences" of a language and was used for the syntax of Algol 60 by John Backus. The ideas derive from the context-free grammar concepts by Noam Chomsky, a linguist. "BNF and its extensions have become standard tools for describing the syntax of programming notations, and in many cases parts of compilers are generated automatically from a BNF description."
+
+In the 1940s, Konrad Zuse designed an algorithmic programming language called Plankalkül ("Plan Calculus"). While no actual implementation occurred until the 1970s, it presented concepts later seen in APL designed by Ken Iverson in the late 1950s. APL is a language for mathematical computations.
+
+High-level language design during the formative years of digital computing provided useful programming tools for a variety of applications:
+ FORTRAN (Formula Translation) for engineering and science applications is considered to be the first high-level language.
+ COBOL (Common Business-Oriented Language) evolved from A-0 and FLOW-MATIC to become the dominant high-level language for business applications.
+ LISP (List Processor) for symbolic computation.
+
+Compiler technology evolved from the need for a strictly defined transformation of the high-level source program into a low-level target program for the digital computer. The compiler could be viewed as a front end to deal with the analysis of the source code and a back end to synthesize the analysis into the target code. Optimization between the front end and back end could produce more efficient target code.
+
+Some early milestones in the development of compiler technology:
+ 1952: An Autocode compiler developed by Alick Glennie for the Manchester Mark I computer at the University of Manchester is considered by some to be the first compiled programming language.
+ 1952: Grace Hopper's team at Remington Rand wrote the compiler for the A-0 programming language (and coined the term compiler to describe it), although the A-0 compiler functioned more as a loader or linker than the modern notion of a full compiler.
+ 1954–1957: A team led by John Backus at IBM developed FORTRAN which is usually considered the first high-level language. In 1957, they completed a FORTRAN compiler that is generally credited as having introduced the first unambiguously complete compiler.
+ 1959: The Conference on Data Systems Language (CODASYL) initiated development of COBOL. The COBOL design drew on A-0 and FLOW-MATIC. By the early 1960s COBOL was compiled on multiple architectures.
+ 1958–1960: Algol 58 was the precursor to ALGOL 60. Algol 58 introduced code blocks, a key advance in the rise of structured programming. ALGOL 60 was the first language to implement nested function definitions with lexical scope. It included recursion. Its syntax was defined using BNF. ALGOL 60 inspired many languages that followed it. Tony Hoare remarked: "... it was not only an improvement on its predecessors but also on nearly all its successors."
+ 1958–1962: John McCarthy at MIT designed LISP. The symbol processing capabilities provided useful features for artificial intelligence research. In 1962, LISP 1.5 release noted some tools: an interpreter written by Stephen Russell and Daniel J. Edwards, a compiler and assembler written by Tim Hart and Mike Levin.
+
+Early operating systems and software were written in assembly language. In the 1960s and early 1970s, the use of high-level languages for system programming was still controversial due to resource limitations. However, several research and industry efforts began the shift toward high-level systems programming languages, for example, BCPL, BLISS, B, and C.
+
+BCPL (Basic Combined Programming Language) designed in 1966 by Martin Richards at the University of Cambridge was originally developed as a compiler writing tool. Several compilers have been implemented, Richards' book provides insights to the language and its compiler. BCPL was not only an influential systems programming language that is still used in research but also provided a basis for the design of B and C languages.
+
+BLISS (Basic Language for Implementation of System Software) was developed for a Digital Equipment Corporation (DEC) PDP-10 computer by W. A. Wulf's Carnegie Mellon University (CMU) research team. The CMU team went on to develop BLISS-11 compiler one year later in 1970.
+
+Multics (Multiplexed Information and Computing Service), a time-sharing operating system project, involved MIT, Bell Labs, General Electric (later Honeywell) and was led by Fernando Corbató from MIT. Multics was written in the PL/I language developed by IBM and IBM User Group. IBM's goal was to satisfy business, scientific, and systems programming requirements. There were other languages that could have been considered but PL/I offered the most complete solution even though it had not been implemented. For the first few years of the Multics project, a subset of the language could be compiled to assembly language with the Early PL/I (EPL) compiler by Doug McIlory and Bob Morris from Bell Labs. EPL supported the project until a boot-strapping compiler for the full PL/I could be developed.
+
+Bell Labs left the Multics project in 1969, and developed a system programming language B based on BCPL concepts, written by Dennis Ritchie and Ken Thompson. Ritchie created a boot-strapping compiler for B and wrote Unics (Uniplexed Information and Computing Service) operating system for a PDP-7 in B. Unics eventually became spelled Unix.
+
+Bell Labs started the development and expansion of C based on B and BCPL. The BCPL compiler had been transported to Multics by Bell Labs and BCPL was a preferred language at Bell Labs. Initially, a front-end program to Bell Labs' B compiler was used while a C compiler was developed. In 1971, a new PDP-11 provided the resource to define extensions to B and rewrite the compiler. By 1973 the design of C language was essentially complete and the Unix kernel for a PDP-11 was rewritten in C. Steve Johnson started development of Portable C Compiler (PCC) to support retargeting of C compilers to new machines.
+
+Object-oriented programming (OOP) offered some interesting possibilities for application development and maintenance. OOP concepts go further back but were part of LISP and Simula language science. Bell Labs became interested in OOP with the development of C++. C++ was first used in 1980 for systems programming. The initial design leveraged C language systems programming capabilities with Simula concepts. Object-oriented facilities were added in 1983. The Cfront program implemented a C++ front-end for C84 language compiler. In subsequent years several C++ compilers were developed as C++ popularity grew.
+
+In many application domains, the idea of using a higher-level language quickly caught on. Because of the expanding functionality supported by newer programming languages and the increasing complexity of computer architectures, compilers became more complex.
+
+DARPA (Defense Advanced Research Projects Agency) sponsored a compiler project with Wulf's CMU research team in 1970. The Production Quality Compiler-Compiler PQCC design would produce a Production Quality Compiler (PQC) from formal definitions of source language and the target. PQCC tried to extend the term compiler-compiler beyond the traditional meaning as a parser generator (e.g., Yacc) without much success. PQCC might more properly be referred to as a compiler generator.
+
+PQCC research into code generation process sought to build a truly automatic compiler-writing system. The effort discovered and designed the phase structure of the PQC. The BLISS-11 compiler provided the initial structure. The phases included analyses (front end), intermediate translation to virtual machine (middle end), and translation to the target (back end). TCOL was developed for the PQCC research to handle language specific constructs in the intermediate representation. Variations of TCOL supported various languages. The PQCC project investigated techniques of automated compiler construction. The design concepts proved useful in optimizing compilers and compilers for the (since 1995, object-oriented) programming language Ada.
+
+The Ada STONEMAN document formalized the program support environment (APSE) along with the kernel (KAPSE) and minimal (MAPSE). An Ada interpreter NYU/ED supported development and standardization efforts with the American National Standards Institute (ANSI) and the International Standards Organization (ISO). Initial Ada compiler development by the U.S. Military Services included the compilers in a complete integrated design environment along the lines of the STONEMAN document. Army and Navy worked on the Ada Language System (ALS) project targeted to DEC/VAX architecture while the Air Force started on the Ada Integrated Environment (AIE) targeted to IBM 370 series. While the projects did not provide the desired results, they did contribute to the overall effort on Ada development.
+
+Other Ada compiler efforts got underway in Britain at the University of York and in Germany at the University of Karlsruhe. In the U. S., Verdix (later acquired by Rational) delivered the Verdix Ada Development System (VADS) to the Army. VADS provided a set of development tools including a compiler. Unix/VADS could be hosted on a variety of Unix platforms such as DEC Ultrix and the Sun 3/60 Solaris targeted to Motorola 68020 in an Army CECOM evaluation. There were soon many Ada compilers available that passed the Ada Validation tests. The Free Software Foundation GNU project developed the GNU Compiler Collection (GCC) which provides a core capability to support multiple languages and targets. The Ada version GNAT is one of the most widely used Ada compilers. GNAT is free but there is also commercial support, for example, AdaCore, was founded in 1994 to provide commercial software solutions for Ada. GNAT Pro includes the GNU GCC based GNAT with a tool suite to provide an integrated development environment.
+
+High-level languages continued to drive compiler research and development. Focus areas included optimization and automatic code generation. Trends in programming languages and development environments influenced compiler technology. More compilers became included in language distributions (PERL, Java Development Kit) and as a component of an IDE (VADS, Eclipse, Ada Pro). The interrelationship and interdependence of technologies grew. The advent of web services promoted growth of web languages and scripting languages. Scripts trace back to the early days of Command Line Interfaces (CLI) where the user could enter commands to be executed by the system. User Shell concepts developed with languages to write shell programs. Early Windows designs offered a simple batch programming capability. The conventional transformation of these language used an interpreter. While not widely used, Bash and Batch compilers have been written. More recently sophisticated interpreted languages became part of the developers tool kit. Modern scripting languages include PHP, Python, Ruby and Lua. (Lua is widely used in game development.) All of these have interpreter and compiler support.
+
+"When the field of compiling began in the late 50s, its focus was limited to the translation of high-level language programs into machine code ... The compiler field is increasingly intertwined with other disciplines including computer architecture, programming languages, formal methods, software engineering, and computer security." The "Compiler Research: The Next 50 Years" article noted the importance of object-oriented languages and Java. Security and parallel computing were cited among the future research targets.
+
+Compiler construction 
+
+A compiler implements a formal transformation from a high-level source program to a low-level target program. Compiler design can define an end-to-end solution or tackle a defined subset that interfaces with other compilation tools e.g. preprocessors, assemblers, linkers. Design requirements include rigorously defined interfaces both internally between compiler components and externally between supporting toolsets.
+
+In the early days, the approach taken to compiler design was directly affected by the complexity of the computer language to be processed, the experience of the person(s) designing it, and the resources available. Resource limitations led to the need to pass through the source code more than once.
+
+A compiler for a relatively simple language written by one person might be a single, monolithic piece of software. However, as the source language grows in complexity the design may be split into a number of interdependent phases. Separate phases provide design improvements that focus development on the functions in the compilation process.
+
+One-pass versus multi-pass compilers 
+Classifying compilers by number of passes has its background in the hardware resource limitations of computers. Compiling involves performing much work and early computers did not have enough memory to contain one program that did all of this work. So compilers were split up into smaller programs which each made a pass over the source (or some representation of it) performing some of the required analysis and translations.
+
+The ability to compile in a single pass has classically been seen as a benefit because it simplifies the job of writing a compiler and one-pass compilers generally perform compilations faster than multi-pass compilers. Thus, partly driven by the resource limitations of early systems, many early languages were specifically designed so that they could be compiled in a single pass (e.g., Pascal).
+
+In some cases, the design of a language feature may require a compiler to perform more than one pass over the source. For instance, consider a declaration appearing on line 20 of the source which affects the translation of a statement appearing on line 10. In this case, the first pass needs to gather information about declarations appearing after statements that they affect, with the actual translation happening during a subsequent pass.
+
+The disadvantage of compiling in a single pass is that it is not possible to perform many of the sophisticated optimizations needed to generate high quality code. It can be difficult to count exactly how many passes an optimizing compiler makes. For instance, different phases of optimization may analyse one expression many times but only analyse another expression once.
+
+Splitting a compiler up into small programs is a technique used by researchers interested in producing provably correct compilers. Proving the correctness of a set of small programs often requires less effort than proving the correctness of a larger, single, equivalent program.
+
+Three-stage compiler structure 
+
+Regardless of the exact number of phases in the compiler design, the phases can be assigned to one of three stages. The stages include a front end, a middle end, and a back end.
+ The front end scans the input and verifies syntax and semantics according to a specific source language. For statically typed languages it performs type checking by collecting type information. If the input program is syntactically incorrect or has a type error, it generates error and/or warning messages, usually identifying the location in the source code where the problem was detected; in some cases the actual error may be (much) earlier in the program. Aspects of the front end include lexical analysis, syntax analysis, and semantic analysis. The front end transforms the input program into an intermediate representation (IR) for further processing by the middle end. This IR is usually a lower-level representation of the program with respect to the source code.
+ The middle end performs optimizations on the IR that are independent of the CPU architecture being targeted. This source code/machine code independence is intended to enable generic optimizations to be shared between versions of the compiler supporting different languages and target processors. Examples of middle end optimizations are removal of useless (dead-code elimination) or unreachable code (reachability analysis), discovery and propagation of constant values (constant propagation), relocation of computation to a less frequently executed place (e.g., out of a loop), or specialization of computation based on the context, eventually producing the "optimized" IR that is used by the back end.
+ The back end takes the optimized IR from the middle end. It may perform more analysis, transformations and optimizations that are specific for the target CPU architecture. The back end generates the target-dependent assembly code, performing register allocation in the process. The back end performs instruction scheduling, which re-orders instructions to keep parallel execution units busy by filling delay slots. Although most optimization problems are NP-hard, heuristic techniques for solving them are well-developed and implemented in production-quality compilers. Typically the output of a back end is machine code specialized for a particular processor and operating system.
+
+This front/middle/back-end approach makes it possible to combine front ends for different languages with back ends for different CPUs while sharing the optimizations of the middle end. Practical examples of this approach are the GNU Compiler Collection, Clang (LLVM-based C/C++ compiler), and the Amsterdam Compiler Kit, which have multiple front-ends, shared optimizations and multiple back-ends.
+
+Front end 
+
+The front end analyzes the source code to build an internal representation of the program, called the intermediate representation (IR). It also manages the symbol table, a data structure mapping each symbol in the source code to associated information such as location, type and scope.
+
+While the frontend can be a single monolithic function or program, as in a scannerless parser, it was traditionally implemented and analyzed as several phases, which may execute sequentially or concurrently. This method is favored due to its modularity and separation of concerns. Most commonly, the frontend is broken into three phases: lexical analysis (also known as lexing or scanning), syntax analysis (also known as scanning or parsing), and semantic analysis. Lexing and parsing comprise the syntactic analysis (word syntax and phrase syntax, respectively), and in simple cases, these modules (the lexer and parser) can be automatically generated from a grammar for the language, though in more complex cases these require manual modification. The lexical grammar and phrase grammar are usually context-free grammars, which simplifies analysis significantly, with context-sensitivity handled at the semantic analysis phase. The semantic analysis phase is generally more complex and written by hand, but can be partially or fully automated using attribute grammars. These phases themselves can be further broken down: lexing as scanning and evaluating, and parsing as building a concrete syntax tree (CST, parse tree) and then transforming it into an abstract syntax tree (AST, syntax tree). In some cases additional phases are used, notably line reconstruction and preprocessing, but these are rare.
+
+The main phases of the front end include the following:
+  converts the input character sequence to a canonical form ready for the parser. Languages which strop their keywords or allow arbitrary spaces within identifiers require this phase. The top-down, recursive-descent, table-driven parsers used in the 1960s typically read the source one character at a time and did not require a separate tokenizing phase. Atlas Autocode and Imp (and some implementations of ALGOL and Coral 66) are examples of stropped languages whose compilers would have a Line Reconstruction phase.
+ Preprocessing supports macro substitution and conditional compilation. Typically the preprocessing phase occurs before syntactic or semantic analysis; e.g. in the case of C, the preprocessor manipulates lexical tokens rather than syntactic forms. However, some languages such as Scheme support macro substitutions based on syntactic forms.
+ Lexical analysis (also known as lexing or tokenization) breaks the source code text into a sequence of small pieces called lexical tokens. This phase can be divided into two stages: the scanning, which segments the input text into syntactic units called lexemes and assigns them a category; and the evaluating, which converts lexemes into a processed value. A token is a pair consisting of a token name and an optional token value. Common token categories may include identifiers, keywords, separators, operators, literals and comments, although the set of token categories varies in different programming languages. The lexeme syntax is typically a regular language, so a finite state automaton constructed from a regular expression can be used to recognize it. The software doing lexical analysis is called a lexical analyzer. This may not be a separate step—it can be combined with the parsing step in scannerless parsing, in which case parsing is done at the character level, not the token level.
+ Syntax analysis (also known as parsing) involves parsing the token sequence to identify the syntactic structure of the program. This phase typically builds a parse tree, which replaces the linear sequence of tokens with a tree structure built according to the rules of a formal grammar which define the language's syntax. The parse tree is often analyzed, augmented, and transformed by later phases in the compiler.
+ Semantic analysis adds semantic information to the parse tree and builds the symbol table. This phase performs semantic checks such as type checking (checking for type errors), or object binding (associating variable and function references with their definitions), or definite assignment (requiring all local variables to be initialized before use), rejecting incorrect programs or issuing warnings. Semantic analysis usually requires a complete parse tree, meaning that this phase logically follows the parsing phase, and logically precedes the code generation phase, though it is often possible to fold multiple phases into one pass over the code in a compiler implementation.
+
+Middle end 
+The middle end, also known as optimizer, performs optimizations on the intermediate representation in order to improve the performance and the quality of the produced machine code. The middle end contains those optimizations that are independent of the CPU architecture being targeted.
+
+The main phases of the middle end include the following:
+ Analysis: This is the gathering of program information from the intermediate representation derived from the input; data-flow analysis is used to build use-define chains, together with dependence analysis, alias analysis, pointer analysis, escape analysis, etc. Accurate analysis is the basis for any compiler optimization. The control-flow graph of every compiled function and the call graph of the program are usually also built during the analysis phase.
+ Optimization: the intermediate language representation is transformed into functionally equivalent but faster (or smaller) forms. Popular optimizations are inline expansion, dead-code elimination, constant propagation, loop transformation and even automatic parallelization.
+Compiler analysis is the prerequisite for any compiler optimization, and they tightly work together. For example, dependence analysis is crucial for loop transformation.
+
+The scope of compiler analysis and optimizations vary greatly; their scope may range from operating within a basic block, to whole procedures, or even the whole program.  There is a trade-off between the granularity of the optimizations and the cost of compilation.  For example, peephole optimizations are fast to perform during compilation but only affect a small local fragment of the code, and can be performed independently of the context in which the code fragment appears.  In contrast, interprocedural optimization requires more compilation time and memory space, but enable optimizations that are only possible by considering the behavior of multiple functions simultaneously.
+
+Interprocedural analysis and optimizations are common in modern commercial compilers from HP, IBM, SGI, Intel, Microsoft, and Sun Microsystems. The free software GCC was criticized for a long time for lacking powerful interprocedural optimizations, but it is changing in this respect. Another open source compiler with full analysis and optimization infrastructure is Open64, which is used by many organizations for research and commercial purposes.
+
+Due to the extra time and space needed for compiler analysis and optimizations, some compilers skip them by default. Users have to use compilation options to explicitly tell the compiler which optimizations should be enabled.
+
+Back end 
+The back end is responsible for the CPU architecture specific optimizations and for code generation.
+
+The main phases of the back end include the following:
+ Machine dependent optimizations: optimizations that depend on the details of the CPU architecture that the compiler targets. A prominent example is peephole optimizations, which rewrites short sequences of assembler instructions into more efficient instructions.
+ Code generation: the transformed intermediate language is translated into the output language, usually the native machine language of the system. This involves resource and storage decisions, such as deciding which variables to fit into registers and memory and the selection and scheduling of appropriate machine instructions along with their associated addressing modes (see also Sethi–Ullman algorithm). Debug data may also need to be generated to facilitate debugging.
+
+Compiler correctness 
+
+Compiler correctness is the branch of software engineering that deals with trying to show that a compiler behaves according to its language specification. Techniques include developing the compiler using formal methods and using rigorous testing (often called compiler validation) on an existing compiler.
+
+Compiled versus interpreted languages 
+
+Higher-level programming languages usually appear with a type of translation in mind: either designed as compiled language or interpreted language. However, in practice there is rarely anything about a language that requires it to be exclusively compiled or exclusively interpreted, although it is possible to design languages that rely on re-interpretation at run time. The categorization usually reflects the most popular or widespread implementations of a language – for instance, BASIC is sometimes called an interpreted language, and C a compiled one, despite the existence of BASIC compilers and C interpreters.
+
+Interpretation does not replace compilation completely. It only hides it from the user and makes it gradual. Even though an interpreter can itself be interpreted, a set of directly executed machine instructions is needed somewhere at the bottom of the execution stack (see machine language).
+
+Furthermore, for optimization compilers can contain interpreter functionality, and interpreters may include ahead of time compilation techniques. For example, where an expression can be executed during compilation and the results inserted into the output program, then it prevents it having to be recalculated each time the program runs, which can greatly speed up the final program. Modern trends toward just-in-time compilation and bytecode interpretation at times blur the traditional categorizations of compilers and interpreters even further.
+
+Some language specifications spell out that implementations must include a compilation facility; for example, Common Lisp. However, there is nothing inherent in the definition of Common Lisp that stops it from being interpreted. Other languages have features that are very easy to implement in an interpreter, but make writing a compiler much harder; for example, APL, SNOBOL4, and many scripting languages allow programs to construct arbitrary source code at runtime with regular string operations, and then execute that code by passing it to a special evaluation function. To implement these features in a compiled language, programs must usually be shipped with a runtime library that includes a version of the compiler itself.
+
+Types 
+One classification of compilers is by the platform on which their generated code executes. This is known as the target platform.
+
+A native or hosted compiler is one whose output is intended to directly run on the same type of computer and operating system that the compiler itself runs on. The output of a cross compiler is designed to run on a different platform. Cross compilers are often used when developing software for embedded systems that are not intended to support a software development environment.
+
+The output of a compiler that produces code for a virtual machine (VM) may or may not be executed on the same platform as the compiler that produced it. For this reason, such compilers are not usually classified as native or cross compilers.
+
+The lower level language that is the target of a compiler may itself be a high-level programming language. C, viewed by some as a sort of portable assembly language, is frequently the target language of such compilers. For example, Cfront, the original compiler for C++, used C as its target language. The C code generated by such a compiler is usually not intended to be readable and maintained by humans, so indent style and creating pretty C intermediate code are ignored. Some of the features of C that make it a good target language include the #line directive, which can be generated by the compiler to support debugging of the original source, and the wide platform support available with C compilers.
+
+While a common compiler type outputs machine code, there are many other types:
+ Source-to-source compilers are a type of compiler that takes a high-level language as its input and outputs a high-level language. For example, an automatic parallelizing compiler will frequently take in a high-level language program as an input and then transform the code and annotate it with parallel code annotations (e.g. OpenMP) or language constructs (e.g. Fortran's DOALL statements). Other terms for a source-to-source compiler are transcompiler or transpiler.
+ Bytecode compilers compile to assembly language of a theoretical machine, like some Prolog implementations
+ This Prolog machine is also known as the Warren Abstract Machine (or WAM).
+ Bytecode compilers for Java, Python are also examples of this category.
+ Just-in-time compilers (JIT compiler) defer compilation until runtime. JIT compilers exist for many modern languages including Python, JavaScript, Smalltalk, Java, Microsoft .NET's Common Intermediate Language (CIL) and others.  A JIT compiler generally runs inside an interpreter.  When the interpreter detects that a code path is "hot", meaning it is executed frequently, the JIT compiler will be invoked and compile the "hot" code for increased performance.
+ For some languages, such as Java, applications are first compiled using a bytecode compiler and delivered in a machine-independent intermediate representation.  A bytecode interpreter executes the bytecode, but the JIT compiler will translate the bytecode to machine code when increased performance is necessary.
+ Hardware compilers (also known as synthesis tools) are compilers whose input is a hardware description language and whose output is a description, in the form of a netlist or otherwise, of a hardware configuration.
+ The output of these compilers target computer hardware at a very low level, for example a field-programmable gate array (FPGA) or structured application-specific integrated circuit (ASIC). Such compilers are said to be hardware compilers, because the source code they compile effectively controls the final configuration of the hardware and how it operates. The output of the compilation is only an interconnection of transistors or lookup tables.
+ An example of hardware compiler is XST, the Xilinx Synthesis Tool used for configuring FPGAs. Similar tools are available from Altera, Synplicity, Synopsys and other hardware vendors.
+ An assembler is a program that compiles human readable assembly language to machine code, the actual instructions executed by hardware.  The inverse program that translates machine code to assembly language is called a disassembler.
+ A program that translates from a low-level language to a higher level one is a decompiler.
+ A program that translates into an object code format that is not supported on the compilation machine is called a cross compiler and is commonly used to prepare code for execution on embedded software applications.
+ A program that rewrites object code back into the same type of object code while applying optimisations and transformations is a binary recompiler.
+
+See also 
+
+ Abstract interpretation
+ Bottom-up parsing
+ Compile and go system
+ Compile farm
+ List of compilers
+ 
+ Metacompilation
+
+References
+
+Further reading 
+
+ 
+ 
+ 
+ 
+ 
+ 
+  (2+xiv+270+6 pages)
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ Compiler textbook references A collection of references to mainstream Compiler Construction Textbooks
+
+External links 
+
+ 
+ Incremental Approach to Compiler Constructiona PDF tutorial
+ 
+  explaining the key conceptual difference between compilers and interpreters
+ 
+ Let's Build a Compiler, by Jack Crenshaw
+ 
+
+American inventions
+ 
+Compiler construction
+Computer libraries
+Programming language implementation
+Utility software types
+A castrato (Italian, : castrati) is a male singer who underwent castration before puberty in order to retain singing voice equivalent to that of a soprano, mezzo-soprano, or contralto. The voice can also occur in one who, due to an endocrinological condition, never reaches sexual maturity.
+
+Castration before puberty (or in its early stages) prevents the larynx from being transformed by the normal physiological events of puberty. As a result, the vocal range of prepubescence (shared by both sexes) is largely retained, and the voice develops into adulthood in a unique way. Prepubescent castration for this purpose diminished greatly in the late 18th century.
+
+Methods of castration used to terminate the onset of puberty varied. Methods involved using opium to medically induce a coma, then submerging the boy into an ice or milk bath where the procedure of either severing the vas deferens (similar to a vasectomy), twisting the testicles until they atrophied, or complete removal via surgical cutting was performed (however the complete removal of the testicles was not a popularly used technique). The procedure was usually done to boys around the age of 8–10; recovery time from the procedure took around two weeks. The means by which future singers were prepared could lead to premature death. To prevent the child from experiencing the intense pain of castration, many were inadvertently administered lethal doses of opium or some other narcotic, or were killed by overlong compression of the carotid artery in the neck (intended to render them unconscious during the castration procedure). 
+ 
+The geographical locations of where these procedures took place is not known specifically. During the 18th century itself, the music historian Charles Burney was sent from pillar to post in search of places where the operation was carried out: I enquired throughout Italy at what place boys were chiefly qualified for singing by castration, but could get no certain intelligence. I was told at Milan that it was at Venice; at Venice that it was at Bologna; but at Bologna the fact was denied, and I was referred to Florence; from Florence to Rome, and from Rome I was sent to Naples ... it is said that there are shops in Naples with this inscription: 'QUI SI CASTRANO RAGAZZI' ("Here boys are castrated"); but I was utterly unable to see or hear of any such shops during my residence in that city.
+
+As the castrato's body grew, his lack of testosterone meant that his epiphyses (bone-joints) did not harden in the normal manner. Thus the limbs of the castrati often grew unusually long, as did their ribs. This, combined with intensive training, gave them unrivalled lung-power and breath capacity. Operating through small, child-sized vocal cords, their voices were also extraordinarily flexible, and quite different from the equivalent adult female voice. Their vocal range was higher than that of the uncastrated adult male. Listening to the only surviving recordings of a castrato (see below), one can hear that the lower part of the voice sounds like a "super-high" tenor, with a more falsetto-like upper register above that.
+
+Castrati were rarely referred to as such: in the 18th century, the euphemism musico (pl musici) was much more generally used, although it usually carried derogatory implications; another synonym was evirato, literally meaning "emasculated". Eunuch is a more general term since, historically, many eunuchs were castrated after puberty and thus the castration had no impact on their voices.
+
+History
+
+Castration as a means of subjugation, enslavement or other punishment has a very long history, dating back to ancient Sumer. In a Western context, eunuch singers are known to have existed from the early Byzantine Empire. In Constantinople around 400 AD, the empress Aelia Eudoxia had a eunuch choir-master, Brison, who may have established the use of castrati in Byzantine choirs, though whether Brison himself was a singer and whether he had colleagues who were eunuch singers is not certain. By the 9th century, eunuch singers were well-known (not least in the choir of Hagia Sophia) and remained so until the sack of Constantinople by the Western forces of the Fourth Crusade in 1204. Their fate from then until their reappearance in Italy more than three hundred years later is not clear. It seems likely that the Spanish tradition of soprano falsettists may have hidden castrati. Much of Spain was under Muslim rulers during the Middle Ages, and castration had a history going back to the ancient Near East. Stereotypically, eunuchs served as harem guards, but they were also valued as high-level political appointees since they could not start a dynasty which would threaten the ruler.
+
+European classical tradition 
+Castrati first appeared in Italy in the mid-16th century, though at first the terms describing them were not always clear. The phrase soprano maschio (male soprano), which could also mean falsettist, occurs in the Due Dialoghi della Musica (Two dialogues upon music) of Luigi Dentice, an Oratorian priest, published in Rome in 1553. On 9 November 1555 Cardinal Ippolito II d'Este (famed as the builder of the Villa d'Este at Tivoli), wrote to Guglielmo Gonzaga, Duke of Mantua (1538–1587), that he has heard that the Duke was interested in his cantoretti (little singers) and offered to send him two, so that he could choose one for his own service. This is a rare term but probably does equate to castrato. The Cardinal's nephew, Alfonso II d'Este, Duke of Ferrara, was another early enthusiast, inquiring about castrati in 1556. There were certainly castrati in the Sistine Chapel choir in 1558, although not described as such: on 27 April of that year, Hernando Bustamante, a Spaniard from Palencia, was admitted (the first castrati so termed who joined the Sistine choir were Pietro Paolo Folignato and Girolamo Rossini, admitted in 1599). Surprisingly, considering the later French distaste for castrati, they certainly existed in France at this time also, being known of in Paris, Orléans, Picardy and Normandy, though they were not abundant: the King of France himself had difficulty in obtaining them. By 1574, there were castrati in the Ducal court chapel at Munich, where the Kapellmeister (music director) was the famous Orlando di Lasso. In 1589, by the bull Cum pro nostro pastorali munere, Pope Sixtus V re-organised the choir of St Peter's, Rome specifically to include castrati.
+
+Thus the castrati came to supplant both boys (whose voices broke after only a few years) and falsettists (whose voices were weaker and less reliable) from the top line in such choirs. Women were banned by the Pauline dictum mulieres in ecclesiis taceant ("let women keep silent in the churches"; see I Corinthians, ch. 14, v. 34).
+
+The Italian castrati were often rumored to have unusually long lives, but a 1993 study found that their lifespans were average.
+
+Opera
+
+Although the castrato (or musico) predates opera, there is some evidence that castrati had parts in the earliest operas. In the first performance of Monteverdi's Orfeo (1607), for example, they played subsidiary roles, including Speranza and (possibly) that of Euridice. Although female roles were performed by castrati in some of the papal states, this was increasingly rare; by 1680, they had supplanted "normal" male voices in lead roles, and retained their position as primo uomo for about a hundred years; an Italian opera not featuring at least one renowned castrato in a lead part would be doomed to fail. Because of the popularity of Italian opera throughout 18th-century Europe (except France), singers such as Ferri, Farinelli, Senesino and Pacchierotti became the first operatic superstars, earning enormous fees and hysterical public adulation. The strictly hierarchical organisation of opera seria favoured their high voices as symbols of heroic virtue, though they were frequently mocked for their strange appearance and bad acting. In his 1755 Reflections upon theatrical expression in tragedy, Roger Pickering wrote:
+Farinelli drew every Body to the Haymarket. What a Pipe! What Modulation! What Extasy to the Ear! But, Heavens! What Clumsiness! What Stupidity! What Offence to the Eye! Reader, if of the City, thou mayest probably have seen in the Fields of Islington or Mile-End or, If thou art in the environs of St James', thou must have observed in the Park with what Ease and Agility a cow, heavy with calf, has rose up at the command of the Milk-woman's foot: thus from the mossy bank sprang the DIVINE FARINELLI.The training of the boys was rigorous. The regimen of one singing school in Rome (c. 1700) consisted of one hour of singing difficult and awkward pieces, one hour practising trills, one hour practising ornamented passaggi, one hour of singing exercises in their teacher's presence and in front of a mirror so as to avoid unnecessary movement of the body or facial grimaces, and one hour of literary study; all this, moreover, before lunch. After, half an hour would be devoted to musical theory, another to writing counterpoint, an hour copying down the same from dictation, and another hour of literary study. During the remainder of the day, the young castrati had to find time to practice their harpsichord playing, and to compose vocal music, either sacred or secular depending on their inclination. This demanding schedule meant that, if sufficiently talented, they were able to make a debut in their mid-teens with a perfect technique and a voice of a flexibility and power no woman or ordinary male singer could match.
+
+In the 1720s and 1730s, at the height of the craze for these voices, it has been estimated that upwards of 4,000 boys were castrated annually in the service of art. Many came from poor homes and were castrated by their parents in the hope that their child might be successful and lift them from poverty (this was the case with Senesino). There are, though, records of some young boys asking to be operated on to preserve their voices (e.g. Caffarelli, who was from a wealthy family: his grandmother gave him the income from two vineyards to pay for his studies). Caffarelli was also typical of many castrati in being famous for tantrums on and off-stage, and for amorous adventures with noble ladies. Some, as described by Casanova, preferred gentlemen (noble or otherwise). Only a small percentage of boys castrated to preserve their voices had successful careers on the operatic stage; the better "also-rans" sang in cathedral or church choirs, but because of their marked appearance and the ban on their marrying, there was little room for them in society outside a musical context.
+
+The castrati came in for a great amount of scurrilous and unkind abuse, and as their fame increased, so did the hatred of them. They were often castigated as malign creatures who lured men into homosexuality. There were homosexual castrati, as Casanova's accounts of 18th-century Italy bear witness. He mentions meeting an abbé whom he took for a girl in disguise, only later discovering that "she" was a famous castrato. In Rome in 1762 he attended a performance at which the prima donna was a castrato, "the favourite pathic" of Cardinal Borghese, who dined every evening with his protector. From his behaviour on stage "it was obvious that he hoped to inspire the love of those who liked him as a man, and probably would not have done so as a woman".
+
+Decline
+
+By the late 18th century, changes in operatic taste and social attitudes spelled the end for castrati. They lingered on past the end of the ancien régime (which their style of opera parallels), and two of their number, Pacchierotti and Crescentini, performed before Napoleon. The last great operatic castrato was Giovanni Battista Velluti (1781–1861), who performed the last operatic castrato role ever written: Armando in Il crociato in Egitto by Meyerbeer (Venice, 1824). Soon after this they were replaced definitively as the first men of the operatic stage by a new breed of heroic tenor, as first incarnated by the Frenchman Gilbert-Louis Duprez, the earliest so-called "king of the high Cs". His successors have included such singers as Enrico Tamberlik, Jean de Reszke, Francesco Tamagno, Enrico Caruso, Giovanni Martinelli, Beniamino Gigli, Jussi Björling, Franco Corelli and Luciano Pavarotti, among others.
+
+After the unification of Italy in 1861, "eviration" was officially made illegal (the new Italian state had adopted the previous penal code of the Kingdom of Sardinia which expressly forbade the practice). In 1878, Pope Leo XIII prohibited the hiring of new castrati by the church: only in the Sistine Chapel and in other papal basilicas in Rome did a few castrati linger. A group photo of the Sistine Choir taken in 1898 shows that by then only six remained (plus the Direttore Perpetuo, the fine soprano castrato Domenico Mustafà), and in 1902 a ruling was extracted from Pope Leo that no further castrati should be admitted. The official end to the castrati came on St. Cecilia's Day, 22 November 1903, when the new pope, Pius X, issued his motu proprio, Tra le Sollecitudini ('Amongst the Cares'), which contained this instruction: "Whenever ... it is desirable to employ the high voices of sopranos and contraltos, these parts must be taken by boys, according to the most ancient usage of the Church."
+
+The last Sistine castrato to survive was Alessandro Moreschi, the only castrato to have made solo recordings. While an interesting historical record, these discs of his give us only a glimpse of the castrato voice – although he had been renowned as "The Angel of Rome" at the beginning of his career, some would say he was past his prime when the recordings were made in 1902 and 1904 and he never attempted to sing opera. Domenico Salvatori, a castrato who was contemporary with Moreschi, made some ensemble recordings with him but has no surviving solo recordings. The recording technology of the day was not of modern high quality. Salvatori died in 1909; Moreschi retired officially in March 1913, and died in 1922.
+
+The Catholic Church's involvement in the castrato phenomenon has long been controversial, and there have recently been calls for it to issue an official apology for its role. As early as 1748, Pope Benedict XIV tried to ban castrati from churches, but such was their popularity at the time that he realised that doing so might result in a drastic decline in church attendance.
+
+The rumours of another castrato sequestered in the Vatican for the personal delectation of the Pontiff until as recently as 1959 have been proven false. The singer in question was a pupil of Moreschi's, Domenico Mancini, such a successful imitator of his teacher's voice that even Lorenzo Perosi, Direttore Perpetuo of the Sistine Choir from 1898 to 1956 and a strenuous opponent of the practice of castrato singers, thought he was a castrato. Mancini was in fact a moderately skilful falsettist and professional double bass player.
+
+Modern castrati and similar voices
+A male can retain his child voice if it never changes during puberty. The retained voice can be the treble voice shared by both sexes in childhood and is the same as a boy soprano voice. But as evidence shows, many castratos, such as Senesino and Caffarelli, were actually altos (mezzo-soprano) – not sopranos. So-called "natural" or "endocrinological castrati" are born with hormonal anomalies, such as Klinefelter's syndrome and Kallmann's syndrome, or have undergone unusual physical or medical events during their early lives that reproduce the vocal effects of castration without being castrated.
+
+Jimmy Scott, Radu Marian and Javier Medina are examples of this type of high male voice via endocrinological diseases. Michael Maniaci is somewhat different, in that he has no hormonal or other anomalies, but claims that his voice did not "break" in the usual manner, leaving him still able to sing in the soprano register. Other uncastrated male adults sing soprano, generally using some form of falsetto but in a much higher range than most countertenors. Examples are Aris Christofellis, Jörg Waschinski, and Ghio Nannini.
+
+However, it is believed the castrati possessed more of a tenorial chest register (the aria "Navigante che non spera" in Leonardo Vinci's opera Il Medo, written for Farinelli, requires notes down to C3, 131 Hz). Similar low-voiced singing can be heard from the jazz vocalist Jimmy Scott, whose range matches approximately that used by female blues singers. High-pitched singer Jordan Smith has demonstrated having more of a tenorial chest register.
+
+Actor Chris Colfer has stated in interviews that when his voice began to change at puberty, he sang in a high voice "constantly" in an effort to retain his range. Actor and singer Alex Newell has soprano range. Voice actor Walter Tetley may or may not have been a castrato; Bill Scott, a co-worker of Tetley's during their later work in television, once half-jokingly quipped that Tetley's mother "had him fixed" to protect the child star's voice-acting career. Tetley did never personally divulge the exact reason for his condition, which left him with the voice of a preteen boy for his entire adult life. Botanist George Washington Carver was noted for his high voice, believed to be the result of pertussis and croup infections in his childhood that stunted his growth.
+
+Notable castrati
+
+Loreto Vittori (1604–1670)
+Baldassare Ferri (1610–1680)
+Atto Melani (1626–1714)
+Giovanni Grossi ("Siface") (1653–1697)
+Pier Francesco Tosi (1654–1732)
+Francesco Ceccarelli (1752–1814)
+Gaspare Pacchierotti (1740-1821)
+Nicolo Grimaldi ("Nicolini") (1673–1732)
+Gaetano Berenstadt (1687-1734)
+Carlo Mannelli (1640–1697)
+Antonio Bernacchi (1685–1756)
+Francesco Bernardi ("Senesino") (1686–1758)
+Valentino Urbani ("Valentini") (1690–1722)
+Francesco Paolo Masullo (1679-1733)
+Giacinto Fontana ("Farfallino") (1692–1739)
+Giuseppe Aprile (1731-1813)
+Giovanni Carestini ("Cusanino") (c. 1704–c. 1760)
+Carlo Broschi ("Farinelli") (1705–1782)
+Domenico Annibali ("Domenichino") (1705–1779)
+Gaetano Majorano ("Caffarelli") (1710–1783)
+Francesco Soto de Langa (1534-1619)
+Felice Salimbeni (1712–1752)
+Giaocchino Conti ("Gizziello") (1714–1761)
+Giovanni Battista Mancini (1714 –1800)
+Giovanni Manzuoli (1720–1782)
+Gaetano Guadagni (1725–1792)
+Giusto Fernando Tenducci (ca. 1736–1790)
+Giuseppe Millico ("Il Muscovita") (1737–1802)
+Angelo Maria Monticelli (1710–1764)
+Gasparo Pacchierotti (1740–1821)
+Venanzio Rauzzini (1746–1810)
+Luigi Marchesi ("Marchesini") (1754–1829)
+Vincenzo dal Prato (1756–1828)
+Girolamo Crescentini (1762–1848)
+Francesco Antonio Pistocchi (1659-1726)
+Giovanni Battista "Giambattista" Velluti (1781–1861)
+Domenico Mustafà (1829–1912)
+Giovanni Cesari (1843–1904)
+Domenico Salvatori (1855–1909)
+Alessandro Moreschi (1858–1922)
+
+See also
+ Cry to Heaven
+ The Alteration
+ Farinelli (film)
+ Sarrasine
+ Eunuch
+ Comprachicos
+
+References
+
+Bibliography
+
+External links
+ All you would like to know about Castrati
+ Castrados por amor al arte
+ Recordings:
+ Antonio Maria Bononcini's Vorrei pupille belle, sung by Radu Marian
+ 1904 Recording of Alessandro Moreschi singing Bach/Gounod Ave Maria
+ Javier Medina Avila, including an audio sample (Riccardo Broschi: Ombra fedele anch'io)
+
+Voice types
+
+Opera history
+Italian opera terminology
+Obsolete occupations
+Androgyny
+A counting-out game or counting-out rhyme is a simple method of 'randomly' selecting a person from a group, often used by children for the purpose of playing another game. It usually requires no materials, and is achieved with spoken words or hand gestures. The historian Henry Carrington Bolton suggested in his 1888 book Counting Out Rhymes of Children that the custom of counting out originated in the "superstitious practices of divination by lots."
+
+Many such methods involve one person pointing at each participant in a circle of players while reciting a rhyme. A new person is pointed at as each word is said. The player who is selected at the conclusion of the rhyme is "it" or "out".  In an alternate version, the circle of players may each put two feet in and at the conclusion of the rhyme, that player removes one foot and the rhyme starts over with the next person. In this case, the first player that has both feet removed is "it" or "out".  In theory a counting rhyme is determined entirely by the starting selection (and would result in a modulo operation), but in practice they are often accepted as random selections because the number of words has not been calculated beforehand, so the result is unknown until someone is selected.
+
+A variant of counting-out game, known as the Josephus problem, represents a famous theoretical problem in mathematics and computer science.
+
+Examples
+Several simple games can be played to select one person from a group, either as a straightforward winner, or as someone who is eliminated. Rock, Paper, Scissors, Odd or Even and Blue Shoe require no materials and are played using hand gestures, although with the former it is possible for a player to win or lose through skill rather than luck. Coin flipping and drawing straws are fair methods of randomly determining a player. Fizz Buzz is a spoken word game where if a player slips up and speaks a word out of sequence, they are eliminated.
+
+Common rhymes
+
+(These rhymes may have many local or regional variants.)
+ Eeny, meeny, miny, moe
+ 10 Little Indians
+ Five Little Ducks
+ Ip dip
+ One, Two, Three, Four, Five
+ Tinker, Tailor (traditionally played in England)
+ Yan Tan Tethera
+ Inky Pinky Ponky
+ One potato, two potato
+Ink-a-dink
+ 
+ En Den Dino
+
+Cultural references
+
+Marx Brothers 
+A scene in the Marx Brothers movie Duck Soup plays on the fact that counting-out games are not really random.  Faced with selecting someone to go on a dangerous mission, the character Chicolini (Chico Marx) chants:
+
+Rrringspot, vonza, twoza, zig-zag-zav, popti, vinaga, [tin-lie, tav,] harem, scarem, merchan, tarem, teir, tore...
+
+only to stop as he realizes he is about to select himself.  He then says, "I did it wrong.  Wait, wait, I start here", and repeats the chant—with the same result. After that, he says, "That's no good too.  I got it!" and reduces the chant to
+
+Rrringspot, buck!
+
+And with this version he finally manages to "randomly" select someone else.
+
+Seinfeld 
+A version of a counting game "ink-a-dink" features in the Seinfeld episode "The Statue." The relevant scene includes a discussion between the characters of Jerry and George if the person who is "it" is the "winner" or the "loser": 
+
+ JERRY: Alright, let's go. Hey, you know, you owe me one.
+ GEORGE: What?
+ JERRY: The Ink-a-dink.. you were It.
+ GEORGE: Its bad?
+ JERRY: Its very bad.
+
+See also
+ Repetitive song
+
+References
+
+External links
+
+Videos of "choosing songs" a.k.a. Counting rhymes
+Selection Rhymes at the BBC's project h2g2
+ Counting rhymes and other songs for counting in traditional music from county of Nice, France.
+
+ 
+Nursery rhymes
+In cryptography, key size or key length refers to the number of bits in a key used by a cryptographic algorithm (such as a cipher).
+
+Key length defines the upper-bound on an algorithm's security (i.e. a logarithmic measure of the fastest known attack against an algorithm), because the security of all algorithms can be violated by brute-force attacks. Ideally, the lower-bound on an algorithm's security is by design equal to the key length (that is, the algorithm's design does not detract from the degree of security inherent in the key length).
+
+Most symmetric-key algorithms are designed to have security equal to their key length. However, after design, a new attack might be discovered. For instance, Triple DES was designed to have a 168-bit key, but an attack of complexity 2112 is now known (i.e. Triple DES now only has 112 bits of security, and of the 168 bits in the key the attack has rendered 56 'ineffective' towards security). Nevertheless, as long as the security (understood as "the amount of effort it would take to gain access") is sufficient for a particular application, then it does not matter if key length and security coincide. This is important for asymmetric-key algorithms, because no such algorithm is known to satisfy this property; elliptic curve cryptography comes the closest with an effective security of roughly half its key length.
+
+Significance
+Keys are used to control the operation of a cipher so that only the correct key can convert encrypted text (ciphertext) to plaintext. All commonly-used ciphers are based on publicly known algorithms or are open source and so it is only the difficulty of obtaining the key that determines security of the system, provided that there is no analytic attack (i.e. a "structural weakness" in the algorithms or protocols used), and assuming that the key is not otherwise available (such as via theft, extortion, or compromise of computer systems). The widely accepted notion that the security of the system should depend on the key alone has been explicitly formulated by Auguste Kerckhoffs (in the 1880s) and Claude Shannon (in the 1940s); the statements are known as Kerckhoffs' principle and Shannon's Maxim respectively.
+
+A key should, therefore, be large enough that a brute-force attack (possible against any encryption algorithm) is infeasible – i.e. would take too long and/or would take too much memory to execute. Shannon's work on information theory showed that to achieve so-called 'perfect secrecy', the key length must be at least as large as the message and only used once (this algorithm is called the one-time pad). In light of this, and the practical difficulty of managing such long keys, modern cryptographic practice has discarded the notion of perfect secrecy as a requirement for encryption, and instead focuses on computational security, under which the computational requirements of breaking an encrypted text must be infeasible for an attacker.
+
+Key size and encryption system
+Encryption systems are often grouped into families. Common families include symmetric systems (e.g. AES) and asymmetric systems (e.g. RSA and Elliptic-curve_cryptography). They may be grouped according to the central algorithm used (e.g. elliptic curve cryptography and Feistel ciphers). Because each of these has a different level of cryptographic complexity, it is usual to have different key sizes for the same level of security, depending upon the algorithm used. For example, the security available with a 1024-bit key using asymmetric RSA is considered approximately equal in security to an 80-bit key in a symmetric algorithm.
+
+The actual degree of security achieved over time varies, as more computational power and more powerful mathematical analytic methods become available. For this reason, cryptologists tend to look at indicators that an algorithm or key length shows signs of potential vulnerability, to move to longer key sizes or more difficult algorithms. For example, , a 1039-bit integer was factored with the special number field sieve using 400 computers over 11 months. The factored number was of a special form; the special number field sieve cannot be used on RSA keys. The computation is roughly equivalent to breaking a 700 bit RSA key. However, this might be an advance warning that 1024 bit RSA keys used in secure online commerce should be deprecated, since they may become breakable in the foreseeable future. Cryptography professor Arjen Lenstra observed that "Last time, it took nine years for us to generalize from a special to a nonspecial, hard-to-factor number" and when asked whether 1024-bit RSA keys are dead, said: "The answer to that question is an unqualified yes."
+
+The 2015 Logjam attack revealed additional dangers in using Diffie-Hellman key exchange when only one or a few common 1024-bit or smaller prime moduli are in use. This practice, somewhat common at the time, allows large amounts of communications to be compromised at the expense of attacking a small number of primes.
+
+Brute-force attack 
+
+Even if a symmetric cipher is currently unbreakable by exploiting structural weaknesses in its algorithm, it may be possible to run through the entire space of keys in what is known as a brute-force attack. Because longer symmetric keys require exponentially more work to brute force search, a sufficiently long symmetric key makes this line of attack impractical.
+
+With a key of length n bits, there are 2n possible keys. This number grows very rapidly as n increases. The large number of operations (2128) required to try all possible 128-bit keys is widely considered out of reach for conventional digital computing techniques for the foreseeable future. However, a quantum computer capable of running Grover's algorithm would be able to search the possible keys more efficiently. If a suitably sized quantum computer would reduce a 128-bit key down to 64-bit security, roughly a DES equivalent. This is one of the reasons why AES supports key lengths of 256 bits and longer.
+
+Symmetric algorithm key lengths
+IBM's Lucifer cipher was selected in 1974 as the base for what would become the Data Encryption Standard. Lucifer's key length was reduced from 128 bits to 56 bits, which the NSA and NIST argued was sufficient for non-governmental protection at the time. The NSA has major computing resources and a large budget; some cryptographers including Whitfield Diffie and Martin Hellman complained that this made the cipher so weak that NSA computers would be able to break a DES key in a day through brute force parallel computing. The NSA disputed this, claiming that brute-forcing DES would take them "something like 91 years".
+
+However, by the late 90s, it became clear that DES could be cracked in a few days' time-frame with custom-built hardware such as could be purchased by a large corporation or government. The book Cracking DES (O'Reilly and Associates) tells of the successful ability in 1998 to break 56-bit DES by a brute-force attack mounted by a cyber civil rights group with limited resources; see EFF DES cracker. Even before that demonstration, 56 bits was considered insufficient length for symmetric algorithm keys for general use. Because of this, DES was replaced in most security applications by Triple DES, which has 112 bits of security when using 168-bit keys (triple key).
+
+The Advanced Encryption Standard published in 2001 uses key sizes of 128, 192 or 256 bits. Many observers consider 128 bits sufficient for the foreseeable future for symmetric algorithms of AES's quality until quantum computers become available. However, as of 2015, the U.S. National Security Agency has issued guidance that it plans to switch to quantum computing resistant algorithms and now requires 256-bit AES keys for data classified up to Top Secret.
+
+In 2003, the U.S. National Institute for Standards and Technology, NIST proposed phasing out 80-bit keys by 2015. At 2005, 80-bit keys were allowed only until 2010.
+
+Since 2015, NIST guidance says that "the use of keys that provide less than 112 bits of security strength for key agreement is now disallowed." NIST approved symmetric encryption algorithms include three-key Triple DES, and AES. Approvals for two-key Triple DES and Skipjack were withdrawn in 2015; the NSA's Skipjack algorithm used in its Fortezza program employs 80-bit keys.
+
+Asymmetric algorithm key lengths
+The effectiveness of public key cryptosystems depends on the intractability (computational and theoretical) of certain mathematical problems such as integer factorization. These problems are time-consuming to solve, but usually faster than trying all possible keys by brute force. Thus, asymmetric keys must be longer for equivalent resistance to attack than symmetric algorithm keys. The most common methods are assumed to be weak against sufficiently powerful quantum computers in the future.
+
+Since 2015, NIST recommends a minimum of 2048-bit keys for RSA, an update to the widely-accepted recommendation of a 1024-bit minimum since at least 2002.
+
+1024-bit RSA keys are equivalent in strength to 80-bit symmetric keys, 2048-bit RSA keys to 112-bit symmetric keys, 3072-bit RSA keys to 128-bit symmetric keys, and 15360-bit RSA keys to 256-bit symmetric keys. In 2003, RSA Security claimed that 1024-bit keys were likely to become crackable some time between 2006 and 2010, while 2048-bit keys are sufficient until 2030.  the largest RSA key publicly known to be cracked is RSA-250 with 829 bits.
+
+The Finite Field Diffie-Hellman algorithm has roughly the same key strength as RSA for the same key sizes. The work factor for breaking Diffie-Hellman is based on the discrete logarithm problem, which is related to the integer factorization problem on which RSA's strength is based. Thus, a 2048-bit Diffie-Hellman key has about the same strength as a 2048-bit RSA key.
+
+Elliptic-curve cryptography (ECC) is an alternative set of asymmetric algorithms that is equivalently secure with shorter keys, requiring only approximately twice the bits as the equivalent symmetric algorithm. A 256-bit ECDH key has approximately the same safety factor as a 128-bit AES key. A message encrypted with an elliptic key algorithm using a 109-bit long key was broken in 2004.
+
+The NSA previously recommended 256-bit ECC for protecting classified information up to the SECRET level, and 384-bit for TOP SECRET; In 2015 it announced plans to transition to quantum-resistant algorithms by 2024, and until then recommends 384-bit for all classified information.
+
+Effect of quantum computing attacks on key strength 
+The two best known quantum computing attacks are based on Shor's algorithm and Grover's algorithm. Of the two, Shor's offers the greater risk to current security systems.
+
+Derivatives of Shor's algorithm are widely conjectured to be effective against all mainstream public-key algorithms including RSA, Diffie-Hellman and elliptic curve cryptography. According to Professor Gilles Brassard, an expert in quantum computing: "The time needed to factor an RSA integer is the same order as the time needed to use that same integer as modulus for a single RSA encryption. In other words, it takes no more time to break RSA on a quantum computer (up to a multiplicative constant) than to use it legitimately on a classical computer." The general consensus is that these public key algorithms are insecure at any key size if sufficiently large quantum computers capable of running Shor's algorithm become available. The implication of this attack is that all data encrypted using current standards based security systems such as the ubiquitous SSL used to protect e-commerce and Internet banking and SSH used to protect access to sensitive computing systems is at risk. Encrypted data protected using public-key algorithms can be archived and may be broken at a later time, commonly known as retroactive/retrospective decryption or "harvest and decrypt".
+
+Mainstream symmetric ciphers (such as AES or Twofish) and collision resistant hash functions (such as SHA) are widely conjectured to offer greater security against known quantum computing attacks. They are widely thought most vulnerable to Grover's algorithm. Bennett, Bernstein, Brassard, and Vazirani proved in 1996 that a brute-force key search on a quantum computer cannot be faster than roughly 2n/2 invocations of the underlying cryptographic algorithm, compared with roughly 2n in the classical case. Thus in the presence of large quantum computers an n-bit key can provide at least n/2 bits of security. Quantum brute force is easily defeated by doubling the key length, which has little extra computational cost in ordinary use. This implies that at least a 256-bit symmetric key is required to achieve 128-bit security rating against a quantum computer. As mentioned above, the NSA announced in 2015 that it plans to transition to quantum-resistant algorithms.
+
+According to the NSA:
+
+, the NSA's Commercial National Security Algorithm Suite includes:
+
+See also
+ Key stretching
+
+Notes
+
+References
+
+General
+ Recommendation for Key Management — Part 1: general, NIST Special Publication 800-57. March, 2007
+ Blaze, Matt; Diffie, Whitfield; Rivest, Ronald L.; et al. "Minimal Key Lengths for Symmetric Ciphers to Provide Adequate Commercial Security". January, 1996
+ Arjen K. Lenstra, Eric R. Verheul: Selecting Cryptographic Key Sizes. J. Cryptology 14(4): 255-293 (2001) — Citeseer link
+
+External links
+ www.keylength.com: An online keylength calculator
+ Articles discussing the implications of quantum computing
+ NIST cryptographic toolkit
+ Burt Kaliski: TWIRL and RSA key sizes (May 2003)
+
+Key management
+Cognitive behavioral therapy (CBT) is a psycho-social intervention that aims to reduce symptoms of various mental health conditions, primarily depression and anxiety disorders. Cognitive behavioral therapy is one of the most effective means of treatment for substance abuse and co-occurring mental health disorders. CBT focuses on challenging and changing cognitive distortions (such as thoughts, beliefs, and attitudes) and their associated behaviors to improve emotional regulation and develop personal coping strategies that target solving current problems. Though it was originally designed to treat depression, its uses have been expanded to include many issues and the treatment of many mental health conditions, including anxiety, substance use disorders, marital problems, ADHD, and eating disorders. CBT includes a number of cognitive or behavioral psychotherapies that treat defined psychopathologies using evidence-based techniques and strategies.
+
+CBT is a common form of talk therapy based on the combination of the basic principles from behavioral and cognitive psychology. It is different from historical approaches to psychotherapy, such as the psychoanalytic approach where the therapist looks for the unconscious meaning behind the behaviors, and then formulates a diagnosis. Instead, CBT is a "problem-focused" and "action-oriented" form of therapy, meaning it is used to treat specific problems related to a diagnosed mental disorder. The therapist's role is to assist the client in finding and practicing effective strategies to address the identified goals and to alleviate symptoms of the disorder. CBT is based on the belief that thought distortions and maladaptive behaviors play a role in the development and maintenance of many psychological disorders and that symptoms and associated distress can be reduced by teaching new information-processing skills and coping mechanisms.
+
+When compared to psychoactive medications, review studies have found CBT alone to be as effective for treating less severe forms of depression, anxiety, post-traumatic stress disorder (PTSD), tics, substance use disorders, eating disorders, and borderline personality disorder. Some research suggests that CBT is most effective when combined with medication for treating mental disorders, such as major depressive disorder. CBT is recommended as the first line of treatment for the majority of psychological disorders in children and adolescents, including aggression and conduct disorder. Researchers have found that other bona fide therapeutic interventions were equally effective for treating certain conditions in adults. Along with interpersonal psychotherapy (IPT), CBT is recommended in treatment guidelines as a psychosocial treatment of choice.
+
+Medical uses
+In adults, CBT has been shown to be an effective part of treatment plans for anxiety disorders, body dysmorphic disorder, depression, eating disorders, chronic low back pain, personality disorders, psychosis, schizophrenia, substance use disorders, and bipolar disorder. It is also effective as part of treatment plans in the adjustment, depression, and anxiety associated with fibromyalgia, and with post-spinal cord injuries.
+
+In children or adolescents, CBT is an effective part of treatment plans for anxiety disorders, body dysmorphic disorder, depression and suicidality, eating disorders and obesity, obsessive–compulsive disorder (OCD), and post-traumatic stress disorder (PTSD), as well as tic disorders, trichotillomania, and other repetitive behavior disorders. CBT has also been applied to a variety of childhood disorders, including depressive disorders and various anxiety disorders. CBT has shown to be the most effective intervention for people exposed to adverse childhood experiences in the form of abuse or neglect.
+
+Criticism of CBT sometimes focuses on implementations (such as the UK IAPT) which may result initially in low quality therapy being offered by poorly trained practitioners. However, evidence supports the effectiveness of CBT for anxiety and depression.
+
+Evidence suggests that the addition of hypnotherapy as an adjunct to CBT improves treatment efficacy for a variety of clinical issues.
+
+The United Kingdom's National Institute for Health and Care Excellence (NICE) recommends CBT in the treatment plans for a number of mental health difficulties, including PTSD, OCD, bulimia nervosa, and clinical depression.
+
+Depression and anxiety disorders
+
+Cognitive behavioral therapy has been shown as an effective treatment for clinical depression. The American Psychiatric Association Practice Guidelines (April 2000) indicated that, among psychotherapeutic approaches, cognitive behavioral therapy and interpersonal psychotherapy had the best-documented efficacy for treatment of major depressive disorder.
+
+A 2001 meta-analysis comparing CBT and psychodynamic psychotherapy suggested the approaches were equally effective in the short term for depression.
+In contrast, a 2013 meta-analyses suggested that CBT, interpersonal therapy, and problem-solving therapy outperformed psychodynamic psychotherapy and behavioral activation in the treatment of depression.
+
+According to a 2004 review by INSERM of three methods, cognitive behavioral therapy was either proven or presumed to be an effective therapy on several mental disorders. This included depression, panic disorder, post-traumatic stress, and other anxiety disorders.
+
+CBT has been shown to be effective in the treatment of adults with anxiety disorders.
+
+Results from a 2018 systematic review found a high strength of evidence that CBT-exposure therapy can reduce PTSD symptoms and lead to the loss of a PTSD diagnosis. CBT has also been shown to be effective for post-traumatic stress disorder in very young children (3 to 6 years of age). A Cochrane review found low quality evidence that CBT may be more effective than other psychotherapies in reducing symptoms of posttraumatic stress disorder in children and adolescents.
+
+A systematic review of CBT in depression and anxiety disorders concluded that "CBT delivered in primary care, especially including computer- or Internet-based self-help programs, is potentially more effective than usual care and could be delivered effectively by primary care therapists."
+
+Some meta-analyses find CBT more effective than psychodynamic therapy and equal to other therapies in treating anxiety and depression.
+
+Theoretical approaches
+One etiological theory of depression is Aaron T. Beck's cognitive theory of depression. His theory states that depressed people think the way they do because their thinking is biased towards negative interpretations. According to this theory, depressed people acquire a negative schema of the world in childhood and adolescence as an effect of stressful life events, and the negative schema is activated later in life when the person encounters similar situations.
+
+Beck also described a negative cognitive triad. The cognitive triad is made up of the depressed individual's negative evaluations of themselves, the world, and the future. Beck suggested that these negative evaluations derive from the negative schemata and cognitive biases of the person. According to this theory, depressed people have views such as "I never do a good job", "It is impossible to have a good day", and "things will never get better". A negative schema helps give rise to the cognitive bias, and the cognitive bias helps fuel the negative schema. Beck further proposed that depressed people often have the following cognitive biases: arbitrary inference, selective abstraction, overgeneralization, magnification, and minimization. These cognitive biases are quick to make negative, generalized, and personal inferences of the self, thus fueling the negative schema.
+
+A basic concept in some CBT treatments used in anxiety disorders is in vivo exposure. CBT-exposure therapy refers to the direct confrontation of feared objects, activities, or situations by a patient. For example, a woman with PTSD who fears the location where she was assaulted may be assisted by her therapist in going to that location and directly confronting those fears. Likewise, a person with a social anxiety disorder who fears public speaking may be instructed to directly confront those fears by giving a speech. This "two-factor" model is often credited to O. Hobart Mowrer. Through exposure to the stimulus, this harmful conditioning can be "unlearned" (referred to as extinction and habituation).
+
+CBT for children with phobias is normally delivered over multiple sessions, but one-session treatment has been shown to be equally effective and is cheaper.
+
+Specialised forms of CBT
+CBT-SP, an adaptation of CBT for suicide prevention (SP), was specifically designed for treating youths who are severely depressed and who have recently attempted suicide within the past 90 days, and was found to be effective, feasible, and acceptable.
+
+Acceptance and commitment therapy (ACT) is a specialist branch of CBT (sometimes referred to as contextual CBT). ACT uses mindfulness and acceptance interventions and has been found to have a greater longevity in therapeutic outcomes. In a study with anxiety, CBT and ACT improved similarly across all outcomes from pre- to post-treatment. However, during a 12-month follow-up, ACT proved to be more effective, showing that it is a highly viable lasting treatment model for anxiety disorders.
+
+Computerized CBT (CCBT) has been proven to be effective by randomized controlled and other trials in treating depression and anxiety disorders, including children. Some research has found similar effectiveness to an intervention of informational websites and weekly telephone calls. CCBT was found to be equally effective as face-to-face CBT in adolescent anxiety.
+
+Combined with other treatments
+Studies have provided evidence that when examining animals and humans, that glucocorticoids may lead to a more successful extinction learning during exposure therapy for anxiety disorders. For instance, glucocorticoids can prevent aversive learning episodes from being retrieved and heighten reinforcement of memory traces creating a non-fearful reaction in feared situations. A combination of glucocorticoids and exposure therapy may be a better-improved treatment for treating people with anxiety disorders.
+
+Prevention
+For anxiety disorders, use of CBT with people at risk has significantly reduced the number of episodes of generalized anxiety disorder and other anxiety symptoms, and also given significant improvements in explanatory style, hopelessness, and dysfunctional attitudes. In another study, 3% of the group receiving the CBT intervention developed generalized anxiety disorder by 12 months postintervention compared with 14% in the control group. Individuals with subthreshold levels of panic disorder significantly benefitted from use of CBT. Use of CBT was found to significantly reduce social anxiety prevalence.
+
+For depressive disorders, a stepped-care intervention (watchful waiting, CBT and medication if appropriate) achieved a 50% lower incidence rate in a patient group aged 75 or older. Another depression study found a neutral effect compared to personal, social, and health education, and usual school provision, and included a comment on potential for increased depression scores from people who have received CBT due to greater self recognition and acknowledgement of existing symptoms of depression and negative thinking styles. A further study also saw a neutral result. A meta-study of the Coping with Depression course, a cognitive behavioral intervention delivered by a psychoeducational method, saw a 38% reduction in risk of major depression.
+
+Bipolar disorder
+Many studies show CBT, combined with pharmacotherapy, is effective in improving depressive symptoms, mania severity and psychosocial functioning with mild to moderate effects, and that it is better than medication alone.
+
+INSERM's 2004 review found that CBT is an effective therapy for several mental disorders, including bipolar disorder. This included schizophrenia, depression, bipolar disorder, panic disorder, post-traumatic stress, anxiety disorders, bulimia, anorexia, personality disorders and alcohol dependency.
+
+Psychosis
+In long-term psychoses, CBT is used to complement medication and is adapted to meet individual needs. Interventions particularly related to these conditions include exploring reality testing, changing delusions and hallucinations, examining factors which precipitate relapse, and managing relapses. Meta-analyses confirm the effectiveness of metacognitive training (MCT) for the improvement of positive symptoms (e.g., delusions). 
+
+For people at risk of psychosis, in 2014 the UK National Institute for Health and Care Excellence (NICE) recommended preventive CBT.
+
+Schizophrenia
+INSERM's 2004 review found that CBT is an effective therapy for several mental disorders, including schizophrenia.
+
+A Cochrane review reported CBT had "no effect on long‐term risk of relapse" and no additional effect above standard care. A 2015 systematic review investigated the effects of CBT compared with other psychosocial therapies for people with schizophrenia and determined that there is no clear advantage over other, often less expensive, interventions but acknowledged that better quality evidence is needed before firm conclusions can be drawn.
+
+Addiction and substance use disorders
+
+Pathological and problem gambling
+CBT is also used for pathological and problem gambling. The percentage of people who problem gamble is 1–3% around the world. Cognitive behavioral therapy develops skills for relapse prevention and someone can learn to control their mind and manage high-risk cases. There is evidence of efficacy of CBT for treating pathological and problem gambling at immediate follow up, however the longer term efficacy of CBT for it is currently unknown.
+
+Smoking cessation
+CBT looks at the habit of smoking cigarettes as a learned behavior, which later evolves into a coping strategy to handle daily stressors. Since smoking is often easily accessible and quickly allows the user to feel good, it can take precedence over other coping strategies, and eventually work its way into everyday life during non-stressful events as well. CBT aims to target the function of the behavior, as it can vary between individuals, and works to inject other coping mechanisms in place of smoking. CBT also aims to support individuals with strong cravings, which are a major reported reason for relapse during treatment.
+
+In a 2008 controlled study out of Stanford University School of Medicine suggested CBT may be an effective tool to help maintain abstinence. The results of 304 random adult participants were tracked over the course of one year. During this program, some participants were provided medication, CBT, 24-hour phone support, or some combination of the three methods. At 20 weeks, the participants who received CBT had a 45% abstinence rate, versus non-CBT participants, who had a 29% abstinence rate. Overall, the study concluded that emphasizing cognitive and behavioral strategies to support smoking cessation can help individuals build tools for long term smoking abstinence.
+
+Mental health history can affect the outcomes of treatment. Individuals with a history of depressive disorders had a lower rate of success when using CBT alone to combat smoking addiction.
+
+A Cochrane review was unable to find evidence of any difference between CBT and hypnosis for smoking cessation. While this may be evidence of no effect, further research may uncover an effect of CBT for smoking cessation.
+
+Substance use disorders
+Studies have shown CBT to be an effective treatment for substance use disorders. For individuals with substance use disorders, CBT aims to reframe maladaptive thoughts, such as denial, minimizing and catastrophizing thought patterns, with healthier narratives. Specific techniques include identifying potential triggers and developing coping mechanisms to manage high-risk situations. Research has shown CBT to be particularly effective when combined with other therapy-based treatments or medication.
+
+INSERM's 2004 review found that CBT is an effective therapy for several mental disorders, including alcohol dependency.
+
+Internet addiction
+Research has identified Internet addiction as a new clinical disorder that causes relational, occupational, and social problems. Cognitive behavioral therapy (CBT) has been suggested as the treatment of choice for Internet addiction, and addiction recovery in general has used CBT as part of treatment planning. There is also evidence for the efficacy of CBT in multicenter randomized controlled trials such as STICA (Short-Term Treatment of Internet and Computer Game Addiction).
+
+Eating disorders
+
+Though many forms of treatment can support individuals with eating disorders, CBT is proven to be a more effective treatment than medications and interpersonal psychotherapy alone. CBT aims to combat major causes of distress such as negative cognitions surrounding body weight, shape and size. CBT therapists also work with individuals to regulate strong emotions and thoughts that lead to dangerous compensatory behaviors. CBT is the first line of treatment for bulimia nervosa, and Eating Disorder Non-Specific. While there is evidence to support the efficacy of CBT for bulimia nervosa and binging, the evidence is somewhat variable and limited by small study sizes. INSERM's 2004 review found that CBT is an effective therapy for several mental disorders, including bulimia and anorexia nervosa.
+
+With autistic adults
+Emerging evidence for cognitive behavioral interventions aimed at reducing symptoms of depression, anxiety, and obsessive-compulsive disorder in autistic adults without intellectual disability has been identified through a systematic review. While the research was focused on adults, cognitive behavioral interventions have also been beneficial to autistic children.
+
+Dementia and mild cognitive impairment
+A Cochrane review in 2022 found that adults with dementia and mild cognitive impairment (MCI) who experience symptoms of depression may benefit from CBT, whereas other counselling or supportive interventions might not improve symptoms significantly. Across 5 different psychometric scales, where higher scores indicate severity of depression, adults receiving CBT reported somewhat lower mood scores than those receiving usual care for dementia and MCI overall.  In this review, a sub-group analysis found clinically significant benefits only among those diagnosed with dementia, rather than MCI.
+
+The likelihood of remission from depression also appeared to be 84% higher following CBT, though the evidence for this was less certain. Anxiety, cognition and other neuropsychiatric symptoms were not significantly improved following CBT, however this review did find moderate evidence of improved quality of life and daily living activity scores in those with dementia and MCI.
+
+Post-traumatic stress 
+Cognitive behavioural therapy interventions may have some benefits for people who have post-traumatic stress related to surviving rape, sexual abuse, or sexual assault.
+
+Other uses
+Evidence suggests a possible role for CBT in the treatment of attention deficit hyperactivity disorder (ADHD), hypochondriasis, and bipolar disorder, but more study is needed and results should be interpreted with caution.  CBT has been studied as an aid in the treatment of anxiety associated with stuttering. Initial studies have shown CBT to be effective in reducing social anxiety in adults who stutter, but not in reducing stuttering frequency.
+
+There is some evidence that CBT is superior in the long-term to benzodiazepines and the nonbenzodiazepines in the treatment and management of insomnia. Computerized CBT (CCBT) has been proven to be effective by randomized controlled and other trials in treating insomnia. Some research has found similar effectiveness to an intervention of informational websites and weekly telephone calls. CCBT was found to be equally effective as face-to-face CBT in insomnia.
+
+A Cochrane review of interventions aimed at preventing psychological stress in healthcare workers found that CBT was more effective than no intervention but no more effective than alternative stress-reduction interventions.
+
+Cochrane Reviews have found no convincing evidence that CBT training helps foster care providers manage difficult behaviors in the youths under their care, nor was it helpful in treating people who abuse their intimate partners.
+
+CBT has been applied in both clinical and non-clinical environments to treat disorders such as personality disorders and behavioral problems. INSERM's 2004 review found that CBT is an effective therapy for personality disorders.
+
+Individuals with medical conditions
+In the case of people with metastatic breast cancer, data is limited but CBT and other psychosocial interventions might help with psychological outcomes and pain management. A 2015 Cochrane review also found that CBT for symptomatic management of non-specific chest pain is probably effective in the short term. However, the findings were limited by small trials and the evidence was considered of questionable quality. Cochrane reviews have found no evidence that CBT is effective for tinnitus, although there appears to be an effect on management of associated depression and quality of life in this condition. CBT combined with hypnosis and distraction reduces self-reported pain in children.
+
+There is limited evidence to support its use in coping with the impact of multiple sclerosis, sleep disturbances related to aging, and dysmenorrhea, but more study is needed and results should be interpreted with caution.
+
+Previously CBT has been considered as moderately effective for treating chronic fatigue syndrome, however a National Institutes of Health Pathways to Prevention Workshop stated that in respect of improving treatment options for ME/CFS that the modest benefit from cognitive behavioral therapy should be studied as an adjunct to other methods. The Centres for Disease Control advice on the treatment of ME/CFS makes no reference to CBT while the National Institute for Health and Care Excellence states that cognitive behavioral therapy (CBT) has sometimes been assumed to be a cure for ME/CFS, however, it should only be offered to support people who live with ME/CFS to manage their symptoms, improve their functioning and reduce the distress associated with having a chronic illness."
+
+Age
+CBT is used to help people of all ages, but the therapy should be adjusted based on the age of the patient with whom the therapist is dealing. Older individuals in particular have certain characteristics that need to be acknowledged and the therapy altered to account for these differences thanks to age. Of the small number of studies examining CBT for the management of depression in older people, there is currently no strong support.
+
+Description
+Mainstream cognitive behavioral therapy assumes that changing maladaptive thinking leads to change in behavior and affect, but recent variants emphasize changes in one's relationship to maladaptive thinking rather than changes in thinking itself.
+
+Cognitive distortions
+Therapists use CBT techniques to help people challenge their patterns and beliefs and replace errors in thinking, known as cognitive distortions with "more realistic and effective thoughts, thus decreasing emotional distress and self-defeating behavior". Cognitive distortions can be either a pseudo-discrimination belief or an overgeneralization of something. CBT techniques may also be used to help individuals take a more open, mindful, and aware posture toward cognitive distortions so as to diminish their impact.
+
+Mainstream CBT helps individuals replace "maladaptive... coping skills, cognitions, emotions and behaviors with more adaptive ones", by challenging an individual's way of thinking and the way that they react to certain habits or behaviors, but there is still controversy about the degree to which these traditional cognitive elements account for the effects seen with CBT over and above the earlier behavioral elements such as exposure and skills training.
+
+Phases in therapy
+CBT can be seen as having six phases:
+ Assessment or psychological assessment;
+ Reconceptualization;
+ Skills acquisition;
+ Skills consolidation and application training;
+ Generalization and maintenance;
+ Post-treatment assessment follow-up.
+
+These steps are based on a system created by Kanfer and Saslow. After identifying the behaviors that need changing, whether they be in excess or deficit, and treatment has occurred, the psychologist must identify whether or not the intervention succeeded. For example, "If the goal was to decrease the behavior, then there should be a decrease relative to the baseline. If the critical behavior remains at or above the baseline, then the intervention has failed."
+
+The steps in the assessment phase include:
+ Identify critical behaviors;
+ Determine whether critical behaviors are excesses or deficits;
+ Evaluate critical behaviors for frequency, duration, or intensity (obtain a baseline);
+ If excess, attempt to decrease frequency, duration, or intensity of behaviors; if deficits, attempt to increase behaviors.
+
+The re-conceptualization phase makes up much of the "cognitive" portion of CBT.
+
+Delivery protocols
+There are different protocols for delivering cognitive behavioral therapy, with important similarities among them. Use of the term CBT may refer to different interventions, including "self-instructions (e.g. distraction, imagery, motivational self-talk), relaxation and/or biofeedback, development of adaptive coping strategies (e.g. minimizing negative or self-defeating thoughts), changing maladaptive beliefs about pain, and goal setting". Treatment is sometimes manualized, with brief, direct, and time-limited treatments for individual psychological disorders that are specific technique-driven. CBT is used in both individual and group settings, and the techniques are often adapted for self-help applications. Some clinicians and researchers are cognitively oriented (e.g. cognitive restructuring), while others are more behaviorally oriented (e.g. in vivo exposure therapy). Interventions such as imaginal exposure therapy combine both approaches.
+
+Related techniques
+CBT may be delivered in conjunction with a variety of diverse but related techniques such as exposure therapy, stress inoculation, cognitive processing therapy, cognitive therapy, metacognitive therapy, metacognitive training, relaxation training, dialectical behavior therapy, and acceptance and commitment therapy. Some practitioners promote a form of mindful cognitive therapy which includes a greater emphasis on self-awareness as part of the therapeutic process.
+
+Methods of access
+
+Therapist
+A typical CBT programme would consist of face-to-face sessions between patient and therapist, made up of 6–18 sessions of around an hour each with a gap of 1–3 weeks between sessions. This initial programme might be followed by some booster sessions, for instance after one month and three months. CBT has also been found to be effective if patient and therapist type in real time to each other over computer links.
+
+Cognitive-behavioral therapy is most closely allied with the scientist–practitioner model in which clinical practice and research are informed by a scientific perspective, clear operationalization of the problem, and an emphasis on measurement, including measuring changes in cognition and behavior and the attainment of goals. These are often met through "homework" assignments in which the patient and the therapist work together to craft an assignment to complete before the next session. The completion of these assignments – which can be as simple as a person with depression attending some kind of social event – indicates a dedication to treatment compliance and a desire to change. The therapists can then logically gauge the next step of treatment based on how thoroughly the patient completes the assignment. Effective cognitive behavioral therapy is dependent on a therapeutic alliance between the healthcare practitioner and the person seeking assistance. Unlike many other forms of psychotherapy, the patient is very involved in CBT. For example, an anxious patient may be asked to talk to a stranger as a homework assignment, but if that is too difficult, he or she can work out an easier assignment first. The therapist needs to be flexible and willing to listen to the patient rather than acting as an authority figure.
+
+Computerized or Internet-delivered (CCBT)
+
+Computerized cognitive behavioral therapy (CCBT) has been described by NICE as a "generic term for delivering CBT via an interactive computer interface delivered by a personal computer, internet, or interactive voice response system", instead of face-to-face with a human therapist. It is also known as internet-delivered cognitive behavioral therapy or ICBT. CCBT has potential to improve access to evidence-based therapies, and to overcome the prohibitive costs and lack of availability sometimes associated with retaining a human therapist. In this context, it is important not to confuse CBT with 'computer-based training', which nowadays is more commonly referred to as e-Learning.
+
+Although improvements in both  research quality and treatment adherence is required before advocating for the global dissemination of CCBT, it has been found in meta-studies to be cost-effective and often cheaper than usual care, including for anxiety and PTSD. Studies have shown that individuals with social anxiety and depression experienced improvement with online CBT-based methods. A study assessing an online version of CBT for people with mild-to-moderate PTSD found that the online approach was as effective as, and cheaper than, the same therapy given face-to-face. A review of current CCBT research in the treatment of OCD in children found this interface to hold great potential for future treatment of OCD in youths and adolescent populations. Additionally, most internet interventions for post-traumatic stress disorder use CCBT. CCBT is also predisposed to treating mood disorders amongst non-heterosexual populations, who may avoid face-to-face therapy from fear of stigma. However presently CCBT programs seldom cater to these populations.
+
+In February 2006 NICE recommended that CCBT be made available for use within the NHS across England and Wales for patients presenting with mild-to-moderate depression, rather than immediately opting for antidepressant medication, and CCBT is made available by some health systems. The 2009 NICE guideline recognized that there are likely to be a number of computerized CBT products that are useful to patients, but removed endorsement of any specific product.
+
+Smartphone app-delivered
+Another new method of access is the use of mobile app or smartphone applications to deliver self-help or guided CBT. Technology companies are developing mobile-based artificial intelligence chatbot applications in delivering CBT as an early intervention to support mental health, to build psychological resilience, and to promote emotional well-being. Artificial intelligence (AI) text-based conversational application delivered securely and privately over smartphone devices have the ability to scale globally and offer contextual and always-available support. Active research is underway including real-world data studies that measure effectiveness and engagement of text-based smartphone chatbot apps for delivery of CBT using a text-based conversational interface. Recent market research and analysis of over 500 online mental healthcare solutions identified 3 key challenges in this market: quality of the content, guidance of the user and personalisation.
+
+A study compared CBT alone with a mindfulness-based therapy combined with CBT, both delivered via an app. It found that mindfulness-based self-help reduced the severity of depression more than CBT self-help in the short-term. Overall, NHS costs for the mindfulness approach were £500 less per person than for CBT.
+
+Reading self-help materials
+Enabling patients to read self-help CBT guides has been shown to be effective by some studies. However one study found a negative effect in patients who tended to ruminate, and another meta-analysis found that the benefit was only significant when the self-help was guided (e.g. by a medical professional).
+
+Group educational course
+Patient participation in group courses has been shown to be effective. In a meta-analysis reviewing evidence-based treatment of OCD in children, individual CBT was found to be more efficacious than group CBT.
+
+Types
+
+Brief cognitive behavioral therapy
+Brief cognitive behavioral therapy (BCBT) is a form of CBT which has been developed for situations in which there are time constraints on the therapy sessions and specifically for those struggling with suicidal ideation and/or making suicide attempts. BCBT was based on Rudd's proposed "suicidal mode", an elaboration of Beck's modal theory. BCBT takes place over a couple of sessions that can last up to 12 accumulated hours by design. This technique was first implemented and developed with soldiers on active duty by Dr. M. David Rudd to prevent suicide.
+
+Breakdown of treatment
+ Orientation
+ Commitment to treatment
+ Crisis response and safety planning
+ Means restriction
+ Survival kit
+ Reasons for living card
+ Model of suicidality
+ Treatment journal
+ Lessons learned
+ Skill focus
+ Skill development worksheets
+ Coping cards
+ Demonstration
+ Practice
+ Skill refinement
+ Relapse prevention
+ Skill generalization
+ Skill refinement
+
+Cognitive emotional behavioral therapy
+
+Cognitive emotional behavioral therapy (CEBT) is a form of CBT developed initially for individuals with eating disorders but now used with a range of problems including anxiety, depression, obsessive compulsive disorder (OCD), post-traumatic stress disorder (PTSD) and anger problems. It combines aspects of CBT and dialectical behavioral therapy and aims to improve understanding and tolerance of emotions in order to facilitate the therapeutic process. It is frequently used as a "pretreatment" to prepare and better equip individuals for longer-term therapy.
+
+Structured cognitive behavioral training
+
+Structured cognitive-behavioral training (SCBT) is a cognitive-based process with core philosophies that draw heavily from CBT. Like CBT, SCBT asserts that behavior is inextricably related to beliefs, thoughts, and emotions. SCBT also builds on core CBT philosophy by incorporating other well-known modalities in the fields of behavioral health and psychology: most notably, Albert Ellis's rational emotive behavior therapy. SCBT differs from CBT in two distinct ways. First, SCBT is delivered in a highly regimented format. Second, SCBT is a predetermined and finite training process that becomes personalized by the input of the participant. SCBT is designed to bring a participant to a specific result in a specific period of time. SCBT has been used to challenge addictive behavior, particularly with substances such as tobacco, alcohol and food, and to manage diabetes and subdue stress and anxiety. SCBT has also been used in the field of criminal psychology in the effort to reduce recidivism.
+
+Moral reconation therapy
+Moral reconation therapy, a type of CBT used to help felons overcome antisocial personality disorder (ASPD), slightly decreases the risk of further offending. It is generally implemented in a group format because of the risk of offenders with ASPD being given one-on-one therapy reinforces narcissistic behavioral characteristics, and can be used in correctional or outpatient settings. Groups usually meet weekly for two to six months.
+
+Stress inoculation training
+
+This type of therapy uses a blend of cognitive, behavioral, and certain humanistic training techniques to target the stressors of the client. This usually is used to help clients better cope with their stress or anxiety after stressful events. This is a three-phase process that trains the client to use skills that they already have to better adapt to their current stressors. The first phase is an interview phase that includes psychological testing, client self-monitoring, and a variety of reading materials. This allows the therapist to individually tailor the training process to the client. Clients learn how to categorize problems into emotion-focused or problem-focused so that they can better treat their negative situations. This phase ultimately prepares the client to eventually confront and reflect upon their current reactions to stressors, before looking at ways to change their reactions and emotions to their stressors. The focus is conceptualization.
+
+The second phase emphasizes the aspect of skills acquisition and rehearsal that continues from the earlier phase of conceptualization. The client is taught skills that help them cope with their stressors. These skills are then practised in the space of therapy. These skills involve self-regulation, problem-solving, interpersonal communication skills, etc.
+
+The third and final phase is the application and following through of the skills learned in the training process. This gives the client opportunities to apply their learned skills to a wide range of stressors. Activities include role-playing, imagery, modeling, etc. In the end, the client will have been trained on a preventive basis to inoculate personal, chronic, and future stressors by breaking down their stressors into problems they will address in long-term, short-term, and intermediate coping goals.
+
+Activity-guided CBT: Group-knitting
+
+A newly developed group therapy model based on CBT integrates knitting into the therapeutical process and has been proven to yield reliable and promising results. The foundation for this novel approach to CBT is the frequently emphasized notion that therapy success depends on the embeddedness of the therapy method in the patients' natural routine. Similar to standard group-based CBT, patients meet once a week in a group of 10 to 15 patients and knit together under the instruction of a trained psychologist or mental health professional. Central for the therapy is the patient's imaginative ability to assign each part of the wool to a certain thought. During the therapy, the wool is carefully knitted, creating a knitted piece of any form. This therapeutical process teaches the patient to meaningfully align thought, by (physically) creating a coherent knitted piece. Moreover, since CBT emphasizes the behavior as a result of cognition, the knitting illustrates how thoughts (which are tried to be imaginary tight to the wool) materialize into the reality surrounding us.
+
+Mindfulness-based cognitive behavioral hypnotherapy
+Mindfulness-based cognitive behavioural hypnotherapy (MCBH) is a form of CBT that focuses on awareness in a reflective approach, addressing subconscious tendencies. It is more the process that contains three phases for achieving wanted goals and integrates the principles of mindfulness and cognitive-behavioural techniques with the transformative potential of hypnotherapy.
+
+Unified Protocol
+The Unified Protocol for Transdiagnostic Treatment of Emotional Disorders (UP) is a form of CBT, developed by David H. Barlow and researchers at Boston University, that can be applied to a range of and anxiety disorders. The rationale is that anxiety and depression disorders often occur together due to common underlying causes and can efficiently be treated together.
+
+The UP includes a common set of components:
+
+ Psycho-education
+ Cognitive reappraisal
+ Emotion regulation
+ Changing behaviour
+
+The UP has been shown to produce equivalent results to single-diagnosis protocols for specific disorders, such as OCD and social anxiety disorder.
+Several studies have shown that the UP is easier to disseminate as compared to single-diagnosis protocols.
+
+Criticisms
+
+Relative effectiveness
+The research conducted for CBT has been a topic of sustained controversy. While some researchers write that CBT is more effective than other treatments, many other researchers and practitioners have questioned the validity of such claims. For example, one study determined CBT to be superior to other treatments in treating anxiety and depression. However, researchers responding directly to that study conducted a re-analysis and found no evidence of CBT being superior to other bona fide treatments, and conducted an analysis of thirteen other CBT clinical trials and determined that they failed to provide evidence of CBT superiority. In cases where CBT has been reported to be statistically better than other psychological interventions in terms of primary outcome measures, effect sizes were small and suggested that those differences were clinically meaningless and insignificant. Moreover, on secondary outcomes (i.e., measures of general functioning) no significant differences have been typically found between CBT and other treatments.
+
+A major criticism has been that clinical studies of CBT efficacy (or any psychotherapy) are not double-blind (i.e., either the subjects or the therapists in psychotherapy studies are not blind to the type of treatment). They may be single-blinded, i.e. the rater may not know the treatment the patient received, but neither the patients nor the therapists are blinded to the type of therapy given (two out of three of the persons involved in the trial, i.e., all of the persons involved in the treatment, are unblinded). The patient is an active participant in correcting negative distorted thoughts, thus quite aware of the treatment group they are in.
+
+The importance of double-blinding was shown in a meta-analysis that examined the effectiveness of CBT when placebo control and blindedness were factored in. Pooled data from published trials of CBT in schizophrenia, major depressive disorder (MDD), and bipolar disorder that used controls for non-specific effects of intervention were analyzed. This study concluded that CBT is no better than non-specific control interventions in the treatment of schizophrenia and does not reduce relapse rates; treatment effects are small in treatment studies of MDD, and it is not an effective treatment strategy for prevention of relapse in bipolar disorder. For MDD, the authors note that the pooled effect size was very low.
+
+Declining effectiveness
+Additionally, a 2015 meta-analysis revealed that the positive effects of CBT on depression have been declining since 1977. The overall results showed two different declines in effect sizes: 1) an overall decline between 1977 and 2014, and 2) a steeper decline between 1995 and 2014. Additional sub-analysis revealed that CBT studies where therapists in the test group were instructed to adhere to the Beck CBT manual had a steeper decline in effect sizes since 1977 than studies where therapists in the test group were instructed to use CBT without a manual. The authors reported that they were unsure why the effects were declining but did list inadequate therapist training, failure to adhere to a manual, lack of therapist experience, and patients' hope and faith in its efficacy waning as potential reasons. The authors did mention that the current study was limited to depressive disorders only.
+
+High drop-out rates
+Furthermore, other researchers write that CBT studies have high drop-out rates compared to other treatments.  One meta-analysis found that CBT drop-out rates were 17% higher than those of other therapies. This high drop-out rate is also evident in the treatment of several disorders, particularly the eating disorder anorexia nervosa, which is commonly treated with CBT. Those treated with CBT have a high chance of dropping out of therapy before completion and reverting to their anorexia behaviors.
+
+Other researchers analyzing treatments for youths who self-injure found similar drop-out rates in CBT and DBT groups. In this study, the researchers analyzed several clinical trials that measured the efficacy of CBT administered to youths who self-injure. The researchers concluded that none of them were found to be efficacious.
+
+Philosophical concerns with CBT methods
+The methods employed in CBT research have not been the only criticisms; some individuals have called its theory and therapy into question.
+
+Slife and Williams write that one of the hidden assumptions in CBT is that of determinism, or the absence of free will. They argue that CBT holds that external stimuli from the environment enter the mind, causing different thoughts that cause emotional states: nowhere in CBT theory is agency, or free will, accounted for.
+
+Another criticism of CBT theory, especially as applied to major depressive disorder (MDD), is that it confounds the symptoms of the disorder with its causes.
+
+Side effects
+CBT is generally regarded as having very few if any side effects. Calls have been made by some for more appraisal of possible side effects of CBT. Many randomized trials of psychological interventions like CBT do not monitor potential harms to the patient. In contrast, randomized trials of pharmacological interventions are much more likely to take adverse effects into consideration.
+
+A 2017 meta-analysis revealed that adverse events are not common in children receiving CBT and, furthermore, that CBT is associated with fewer dropouts than either placebo or medications. Nevertheless, CBT therapists do sometimes report 'unwanted events' and side effects in their outpatients with "negative wellbeing/distress" being the most frequent.
+
+Socio-political concerns
+The writer and group analyst Farhad Dalal questions the socio-political assumptions behind the introduction of CBT. According to one reviewer, Dalal connects the rise of CBT with "the parallel rise of neoliberalism, with its focus on marketization, efficiency, quantification and managerialism", and he questions the scientific basis of CBT, suggesting that "the 'science' of psychological treatment is often less a scientific than a political contest". In his book, Dalal also questions the ethical basis of CBT.
+
+History
+
+Early roots
+Precursors of certain fundamental aspects of CBT have been identified in various ancient philosophical traditions, particularly Stoicism. Stoic philosophers, particularly Epictetus, believed logic could be used to identify and discard false beliefs that lead to destructive emotions, which has influenced the way modern cognitive-behavioral therapists identify cognitive distortions that contribute to depression and anxiety. Aaron T. Beck's original treatment manual for depression states, "The philosophical origins of cognitive therapy can be traced back to the Stoic philosophers". Another example of Stoic influence on cognitive theorists is Epictetus on Albert Ellis. A key philosophical figure who influenced the development of CBT was John Stuart Mill through his creation of Associationism, a predecessor of classical conditioning and behavioral theory.
+
+The modern roots of CBT can be traced to the development of behavior therapy in the early 20th century, the development of cognitive therapy in the 1960s, and the subsequent merging of the two.
+
+Behavioral therapy
+
+Groundbreaking work of behaviorism began with John B. Watson and Rosalie Rayner's studies of conditioning in 1920. Behaviorally-centered therapeutic approaches appeared as early as 1924 with Mary Cover Jones' work dedicated to the unlearning of fears in children. These were the antecedents of the development of Joseph Wolpe's behavioral therapy in the 1950s. It was the work of Wolpe and Watson, which was based on Ivan Pavlov's work on learning and conditioning, that influenced Hans Eysenck and Arnold Lazarus to develop new behavioral therapy techniques based on classical conditioning.
+
+During the 1950s and 1960s, behavioral therapy became widely used by researchers in the United States, the United Kingdom, and South Africa. Their inspiration was by the behaviorist learning theory of Ivan Pavlov, John B. Watson, and Clark L. Hull.
+
+In Britain, Joseph Wolpe, who applied the findings of animal experiments to his method of systematic desensitization, applied behavioral research to the treatment of neurotic disorders. Wolpe's therapeutic efforts were precursors to today's fear reduction techniques. British psychologist Hans Eysenck presented behavior therapy as a constructive alternative.
+
+At the same time as Eysenck's work, B. F. Skinner and his associates were beginning to have an impact with their work on operant conditioning. Skinner's work was referred to as radical behaviorism and avoided anything related to cognition. However, Julian Rotter in 1954 and Albert Bandura in 1969 contributed to behavior therapy with their works on social learning theory by demonstrating the effects of cognition on learning and behavior modification. The work of Claire Weekes in dealing with anxiety disorders in the 1960s is also seen as a prototype of behavior therapy.
+
+The emphasis on behavioral factors has been described as the "first wave" of CBT.
+
+Cognitive therapy
+One of the first therapists to address cognition in psychotherapy was Alfred Adler, notably with his idea of basic mistakes and how they contributed to creation of unhealthy behavioral and life goals.Abraham Low believed that someone's thoughts were best changed by changing their actions. Adler and Low influenced the work of Albert Ellis, who developed the earliest cognitive-based psychotherapy called rational emotive behavioral therapy, or REBT. The first version of REBT was announced to the public in 1956.
+
+In the late 1950s, Aaron T. Beck was conducting free association sessions in his psychoanalytic practice. During these sessions, Beck noticed that thoughts were not as unconscious as Freud had previously theorized, and that certain types of thinking may be the culprits of emotional distress. It was from this hypothesis that Beck developed cognitive therapy, and called these thoughts "automatic thoughts". He first published his new methodology in 1967, and his first treatment manual in 1979. Beck has been referred to as "the father of cognitive behavioral therapy".
+
+It was these two therapies, rational emotive therapy, and cognitive therapy, that started the "second wave" of CBT, which emphasised cognitive factors.
+
+Merger of behavioral and cognitive therapies
+Although the early behavioral approaches were successful in many so-called neurotic disorders, they had little success in treating depression. Behaviorism was also losing popularity due to the cognitive revolution. The therapeutic approaches of Albert Ellis and Aaron T. Beck gained popularity among behavior therapists, despite the earlier behaviorist rejection of mentalistic concepts like thoughts and cognitions. Both of these systems included behavioral elements and interventions, with the primary focus being on problems in the present.
+
+In initial studies, cognitive therapy was often contrasted with behavioral treatments to see which was most effective. During the 1980s and 1990s, cognitive and behavioral techniques were merged into cognitive behavioral therapy. Pivotal to this merging was the successful development of treatments for panic disorder by David M. Clark in the UK and David H. Barlow in the US.
+
+Over time, cognitive behavior therapy came to be known not only as a therapy, but as an umbrella term for all cognitive-based psychotherapies. These therapies include, but are not limited to, REBT, cognitive therapy, acceptance and commitment therapy, dialectical behavior therapy, metacognitive therapy, metacognitive training, reality therapy/choice theory, cognitive processing therapy, EMDR, and multimodal therapy. 
+
+This blending of theoretical and technical foundations from both behavior and cognitive therapies constituted the "third wave" of CBT. The most prominent therapies of this third wave are dialectical behavior therapy and acceptance and commitment therapy. Despite the increasing popularity of third-wave treatment approaches, reviews of studies reveal there may be no difference in the effectiveness compared with non-third wave CBT for the treatment of depression.
+
+Society and culture
+The UK's National Health Service announced in 2008 that more therapists would be trained to provide CBT at government expense as part of an initiative called Improving Access to Psychological Therapies (IAPT). The NICE said that CBT would become the mainstay of treatment for non-severe depression, with medication used only in cases where CBT had failed. Therapists complained that the data does not fully support the attention and funding CBT receives. Psychotherapist and professor Andrew Samuels stated that this constitutes "a coup, a power play by a community that has suddenly found itself on the brink of corralling an enormous amount of money ... Everyone has been seduced by CBT's apparent cheapness."
+
+The UK Council for Psychotherapy issued a press release in 2012 saying that the IAPT's policies were undermining traditional psychotherapy and criticized proposals that would limit some approved therapies to CBT, claiming that they restricted patients to "a watered down version of cognitive behavioural therapy (CBT), often delivered by very lightly trained staff".
+
+References
+
+Further reading
+
+External links
+
+ 
+ Association for Behavioral and Cognitive Therapies (ABCT)
+ British Association for Behavioural and Cognitive Psychotherapies
+ National Association of Cognitive-Behavioral Therapists
+ International Association of Cognitive Psychotherapy
+ Information on Research-based CBT Treatments
+ Associated Counsellors & Psychologists CBT Therapists
+
+ 
+Addiction
+Addiction medicine
+Treatment of obsessive–compulsive disorder
+Chinese ( or ) is a group of languages spoken natively by the ethnic Han Chinese majority and many minority ethnic groups in Greater China. Approximately 1.3 billion people, or around 16% of the global population, speak a variety of Chinese as their first language.
+
+Chinese languages form the Sinitic branch of the Sino-Tibetan language family. The spoken varieties of Chinese are usually considered by native speakers to be dialects of a single language. However, their lack of mutual intelligibility means they are sometimes considered to be separate languages in a family. Investigation of the historical relationships among the varieties of Chinese is ongoing. Currently, most classifications posit 7 to 13 main regional groups based on phonetic developments from Middle Chinese, of which the most spoken by far is Mandarin with 66%, or around 800 million speakers, followed by Min (75 million, e.g. Southern Min), Wu (74 million, e.g. Shanghainese), and Yue (68 million, e.g. Cantonese). These branches are unintelligible to each other, and many of their subgroups are unintelligible with the other varieties within the same branch (e.g. Southern Min). There are, however, transitional areas where varieties from different branches share enough features for some limited intelligibility, including New Xiang with Southwestern Mandarin, Xuanzhou Wu Chinese with Lower Yangtze Mandarin, Jin with Central Plains Mandarin and certain divergent dialects of Hakka with Gan (though these are unintelligible with mainstream Hakka). All varieties of Chinese are tonal to at least some degree, and are largely analytic.
+
+The earliest Chinese written records are oracle bone inscriptions dating from the Shang dynasty . The phonetic categories of Old Chinese can be reconstructed from the rhymes of ancient poetry. During the Northern and Southern period, Middle Chinese went through several sound changes and split into several varieties following prolonged geographic and political separation. The Qieyun, a rime dictionary, recorded a compromise between the pronunciations of different regions. The royal courts of the Ming and early Qing dynasties operated using a koiné language known as Guanhua, based on the Nanjing dialect of Mandarin.
+
+Standard Chinese is an official language of both the People's Republic of China and the Republic of China on Taiwan, one of the four official languages of Singapore, and one of the six official languages of the United Nations. Standard Chinese is based on the Beijing dialect of Mandarin, and was first officially adopted in the 1930s. The language is written primarily using a logography of Chinese characters, largely shared by readers who may otherwise speak mutually unintelligible varieties. Since the 1950s, the use of Simplified characters has been promoted by the government of the People's Republic of China, with Singapore officially adopting them in 1976. Traditional characters are used in Taiwan, Hong Kong, Macau, and among Chinese-speaking communities overseas. Traditional characters are also in use in mainland China, despite them not being the first choice in daily use. For example, practising Chinese calligraphy requires the knowledge of traditional Chinese characters.
+
+Classification
+Linguists classify all varieties of Chinese as part of the Sino-Tibetan language family, together with Burmese, Tibetan and many other languages spoken in the Himalayas and the Southeast Asian Massif. Although the relationship was first proposed in the early 19th century and is now broadly accepted, reconstruction of Sino-Tibetan is much less developed than that of families such as Indo-European or Austroasiatic. Difficulties have included the great diversity of the languages, the lack of inflection in many of them, and the effects of language contact. In addition, many of the smaller languages are spoken in mountainous areas that are difficult to reach and are often also sensitive border zones. Without a secure reconstruction of proto-Sino-Tibetan, the higher-level structure of the family remains unclear. A top-level branching into Chinese and Tibeto-Burman languages is often assumed, but has not been convincingly demonstrated.
+
+History
+
+The first written records appeared over 3,000 years ago during the Shang dynasty. As the language evolved over this period, the various local varieties became mutually unintelligible. In reaction, central governments have repeatedly sought to promulgate a unified standard.
+
+Old and Middle Chinese
+
+The earliest examples of Old Chinese are divinatory inscriptions on oracle bones dated to , during the late Shang. The next attested stage came from  inscriptions on bronze artifacts of the Western Zhou period (1046–771 BCE), the Classic of Poetry and portions of the Book of Documents and I Ching. Scholars have attempted to reconstruct the phonology of Old Chinese by comparing later varieties of Chinese with the rhyming practice of the Classic of Poetry and the phonetic elements found in the majority of Chinese characters. Although many of the finer details remain unclear, most scholars agree that Old Chinese differs from Middle Chinese in lacking retroflex and palatal obstruents but having initial consonant clusters of some sort, and in having voiceless nasals and liquids. Most recent reconstructions also describe an atonal language with consonant clusters at the end of the syllable, developing into tone distinctions in Middle Chinese.  Several derivational affixes have also been identified, but the language lacks inflection, and indicated grammatical relationships using word order and grammatical particles.
+
+Middle Chinese was the language used during Northern and Southern dynasties and the Sui, Tang, and Song dynasties (6th–10th centuries CE). It can be divided into an early period, reflected by the Qieyun rime book (601 CE), and a late period in the 10th century, reflected by rhyme tables such as the  constructed by ancient Chinese philologists as a guide to the Qieyun system. These works define phonological categories, but with little hint of what sounds they represent. Linguists have identified these sounds by comparing the categories with pronunciations in modern varieties of Chinese, borrowed Chinese words in Japanese, Vietnamese, and Korean, and transcription evidence. The resulting system is very complex, with a large number of consonants and vowels, but they are probably not all distinguished in any single dialect. Most linguists now believe it represents a diasystem encompassing 6th-century northern and southern standards for reading the classics.
+
+Classical and vernacular written forms
+
+The complex relationship between spoken and written Chinese is an example of diglossia: as spoken, Chinese varieties have evolved at different rates, while the written language used throughout China changed comparatively little, crystallizing into a prestige form known as Classical or Literary Chinese. Literature written distinctly in the Classical form began to emerge during the Spring and Autumn period. Its use in writing remained nearly universal until the late 19th century, culminating with the widespread adoption of written vernacular Chinese with the May Fourth Movement beginning in 1919.
+
+Rise of northern dialects
+After the fall of the Northern Song dynasty and subsequent reign of the Jurchen Jin and Mongol Yuan dynasties in northern China, a common speech (now called Old Mandarin) developed based on the dialects of the North China Plain around the capital.
+The 1324 Zhongyuan Yinyun was a dictionary that codified the rhyming conventions of new sanqu verse form in this language.
+Together with the slightly later Menggu Ziyun, this dictionary describes a language with many of the features characteristic of modern Mandarin dialects.
+
+Up to the early 20th century, most Chinese people only spoke their local variety.
+Thus, as a practical measure, officials of the Ming and Qing dynasties carried out the administration of the empire using a common language based on Mandarin varieties, known as .
+For most of this period, this language was a koiné based on dialects spoken in the Nanjing area, though not identical to any single dialect.
+By the middle of the 19th century, the Beijing dialect had become dominant and was essential for any business with the imperial court.
+
+In the 1930s, a standard national language, , was adopted. After much dispute between proponents of northern and southern dialects and an abortive attempt at an artificial pronunciation, the National Language Unification Commission finally settled on the Beijing dialect in 1932. The People's Republic founded in 1949 retained this standard but renamed it . The national language is now used in education, the media, and formal situations in both mainland China and Taiwan. Because of their colonial and linguistic history, the language used in education, the media, formal speech, and everyday life in Hong Kong and Macau is the local Cantonese, although the standard language, Mandarin, has become very influential and is being taught in schools.
+
+Influence
+
+Historically, the Chinese language has spread to its neighbors through a variety of means. Northern Vietnam was incorporated into the Han empire in 111 BCE, marking the beginning of a period of Chinese control that ran almost continuously for a millennium. The Four Commanderies were established in northern Korea in the first century BCE, but disintegrated in the following centuries. Chinese Buddhism spread over East Asia between the 2nd and 5th centuries CE, and with it the study of scriptures and literature in Literary Chinese. Later, strong central governments modeled on Chinese institutions were established in Korea, Japan, and Vietnam, with Literary Chinese serving as the language of administration and scholarship, a position it would retain until the late 19th century in Korea and (to a lesser extent) Japan, and the early 20th century in Vietnam. Scholars from different lands could communicate, albeit only in writing, using Literary Chinese.
+
+Although they used Chinese solely for written communication, each country had its own tradition of reading texts aloud, the so-called Sino-Xenic pronunciations. Chinese words with these pronunciations were also extensively imported into the Korean, Japanese and Vietnamese languages, and today comprise over half of their vocabularies. This massive influx led to changes in the phonological structure of the languages, contributing to the development of moraic structure in Japanese and the disruption of vowel harmony in Korean.
+
+Borrowed Chinese morphemes have been used extensively in all these languages to coin compound words for new concepts, in a similar way to the use of Latin and Ancient Greek roots in European languages. Many new compounds, or new meanings for old phrases, were created in the late 19th and early 20th centuries to name Western concepts and artifacts. These coinages, written in shared Chinese characters, have then been borrowed freely between languages. They have even been accepted into Chinese, a language usually resistant to loanwords, because their foreign origin was hidden by their written form. Often different compounds for the same concept were in circulation for some time before a winner emerged, and sometimes the final choice differed between countries. The proportion of vocabulary of Chinese origin thus tends to be greater in technical, abstract, or formal language. For example, in Japan, Sino-Japanese words account for about 35% of the words in entertainment magazines, over half the words in newspapers, and 60% of the words in science magazines.
+
+Vietnam, Korea, and Japan each developed writing systems for their own languages, initially based on Chinese characters, but later replaced with the hangul alphabet for Korean and supplemented with kana syllabaries for Japanese, while Vietnamese continued to be written with the complex chữ Nôm script. However, these were limited to popular literature until the late 19th century. Today Japanese is written with a composite script using both Chinese characters called kanji, and kana. Korean is written exclusively with hangul in North Korea (although knowledge of the supplementary Chinese characters (called hanja) is still required), and hanja are increasingly rarely used in South Korea. As a result of former French colonization, Vietnamese switched to a Latin-based alphabet.
+
+Examples of loan words in English include 'tea' from Hokkien , 'dim sum' from Cantonese , and 'kumquat' from Cantonese .
+
+Varieties
+
+Jerry Norman estimated that there are hundreds of mutually unintelligible varieties of Chinese. These varieties form a dialect continuum, in which differences in speech generally become more pronounced as distances increase, though the rate of change varies immensely. Generally, mountainous South China exhibits more linguistic diversity than the North China Plain. In parts of South China, a major city's dialect may only be marginally intelligible to close neighbours. For instance, Wuzhou is about  upstream from Guangzhou, but the Yue variety spoken there is more like that of Guangzhou than is that of Taishan,  southwest of Guangzhou and separated from it by several rivers. In parts of Fujian the speech of neighbouring counties or even villages may be mutually unintelligible.
+
+Until the late 20th century, Chinese emigrants to Southeast Asia and North America came from southeast coastal areas, where Min, Hakka, and Yue dialects are spoken.
+The vast majority of Chinese immigrants to North America up to the mid-20th century spoke the Taishan dialect, from a small coastal area southwest of Guangzhou.
+
+Grouping
+
+Local varieties of Chinese are conventionally classified into seven dialect groups, largely based on the different evolution of Middle Chinese voiced initials:
+ Mandarin, including Standard Chinese, the Beijing dialect, Sichuanese, and also the Dungan language spoken in Central Asia
+ Wu, including Shanghainese, Suzhounese, and Wenzhounese
+ Gan
+ Xiang
+ Min, including Fuzhounese, Hainanese, Hokkien and Teochew
+ Hakka
+ Yue, including Cantonese and Taishanese
+
+The classification of Li Rong, which is used in the Language Atlas of China (1987), distinguishes three further groups:
+ Jin, previously included in Mandarin.
+ Huizhou, previously included in Wu.
+ Pinghua, previously included in Yue.
+
+Some varieties remain unclassified, including the Danzhou dialect on Hainan, Waxianghua spoken in western Hunan, and Shaozhou Tuhua spoken in northern Guangdong.
+
+Standard Chinese
+
+Standard Chinese is the official standard language of China (where it is called ) and Taiwan, and one of the four official languages of Singapore (where it is called either  or ). Standard Chinese is based on the Beijing dialect of Mandarin. The governments of both China and Taiwan intend for speakers of all Chinese speech varieties to use it as a common language of communication. Therefore, it is used in government agencies, in the media, and as a language of instruction in schools.
+
+In China, diglossia has been a common feature. For example, in addition to Standard Chinese, a resident of Shanghai may speak Shanghainese; if they grew up elsewhere, then they are also likely to be fluent in the particular dialect of that local area. A native of Guangzhou may speak both Cantonese and Standard Chinese. In addition to Mandarin, most Taiwanese people also speak Taiwanese Hokkien (commonly ), Hakka, or an Austronesian language. A Taiwanese may commonly mix pronunciations, phrases, and words from Mandarin and other languages of Taiwan, and this mixture is considered normal in daily or informal speech.
+
+Due to their traditional cultural ties to Guangdong amid a history of outside colonization, Cantonese is used as a standard language in Hong Kong and Macau.
+
+Nomenclature
+The designation of various Chinese branches remains controversial. Some linguists and most ordinary Chinese people consider all the spoken varieties as one single language, as speakers share a common national identity and a common written form. Others instead argue that it is inappropriate to refer to major branches of Chinese such as Mandarin, Wu and so on as "dialects" because the mutual unintelligibility between them is too great. However, calling major Chinese branches "languages" would also be wrong under the same criterion, since a branch such as Wu, itself contains many mutually unintelligible varieties, and could not be properly called a single language.
+
+There are also viewpoints pointing out that linguists often ignore mutual intelligibility when varieties share intelligibility with a central variety (i.e. prestige variety, such as Standard Mandarin), as the issue requires some careful handling when mutual intelligibility is inconsistent with language identity.
+
+The Chinese government's official Chinese designation for the major branches of Chinese is , whereas the more closely related varieties within these are called . 
+
+Because of the difficulties involved in determining the difference between language and dialect, other terms have been proposed. These include topolect, lect, vernacular, regional, and variety.
+
+Phonology
+
+Syllables in the Chinese languages have some unique characteristics. They are tightly related to the morphology and also to the characters of the writing system; and phonologically they are structured according to fixed rules.
+
+The structure of each syllable consists of a nucleus that has a vowel (which can be a monophthong, diphthong, or even a triphthong in certain varieties), preceded by an onset (a single consonant, or consonant + glide; a zero onset is also possible), and followed (optionally) by a coda consonant; a syllable also carries a tone. There are some instances where a vowel is not used as a nucleus. An example of this is in Cantonese, where the nasal sonorant consonants  and  can stand alone as their own syllable.
+
+In Mandarin much more than in other spoken varieties, most syllables tend to be open syllables, meaning they have no coda (assuming that a final glide is not analyzed as a coda), but syllables that do have codas are restricted to nasals , , , the retroflex approximant , and voiceless stops , , , or . Some varieties allow most of these codas, whereas others, such as Standard Chinese, are limited to only , , and .
+
+The number of sounds in the different spoken dialects varies, but in general there has been a tendency to a reduction in sounds from Middle Chinese. The Mandarin dialects in particular have experienced a dramatic decrease in sounds and so have far more polysyllabic words than most other spoken varieties. The total number of syllables in some varieties is therefore only about a thousand, including tonal variation, which is only about an eighth as many as English.
+
+Tones
+All varieties of spoken Chinese use tones to distinguish words. A few dialects of north China may have as few as three tones, while some dialects in south China have up to 6 or 12 tones, depending on how one counts. One exception from this is Shanghainese which has reduced the set of tones to a two-toned pitch accent system much like modern Japanese.
+
+A very common example used to illustrate the use of tones in Chinese is the application of the four tones of Standard Chinese, along with the neutral tone, to the syllable . The tones are exemplified by the following five Chinese words:
+
+In contrast, Standard Cantonese has six tones. Historically, finals that end in a stop consonant were considered to be "checked tones" and thus counted separately for a total of nine tones. However, they are considered to be duplicates in modern linguistics and are no longer counted as such:
+
+Grammar
+
+Chinese is often described as a 'monosyllabic' language. However, this is only partially correct. It is largely accurate when describing Old and Middle Chinese; in Classical Chinese, around 90% of words consist of a single character that corresponds one-to-one with a morpheme, the smallest unit of meaning in a language. In modern varieties, it usually remains the case that a morphemes are monosyllabic—in contrast, English has many multi-syllable morphemes, both bound and free, such as 'seven', 'elephant', 'para-' and '-able'. Some of the more conservative modern varieties, usually found in the south, have largely monosyllabic , especially with basic vocabulary. However, most nouns, adjectives and verbs in modern Mandarin are  disyllabic. A significant cause of this is phonological attrition: sound changes over time have steadily reduced the number of possible syllables in the language's inventory. In modern Mandarin, there are only around 1,200 possible syllables, including the tonal distinctions, compared with about 5,000 in Vietnamese (still a largely monosyllabic language), and over 8,000 in English.
+
+Most modern varieties have the tendency to form new words through polysyllabic compounds. In some cases, monosyllabic words have become disyllabic formed from different characters without the use of compounding, as in  from ; this is especially common in Jin varieties. This phonological collapse has led to a corresponding increase in the number of homophones. As an example, the small Langenscheidt Pocket Chinese Dictionary lists six words that are commonly pronounced as  in Standard Chinese:
+
+In modern spoken Mandarin, however, tremendous ambiguity would result if all of these words could be used as-is. The 20th century Yuen Ren Chao poem Lion-Eating Poet in the Stone Den exploits this, consisting of 92 characters all pronounced . As such, most of these words have been replaced in speech, if not in writing, with less ambiguous disyllabic compounds. Only the first one, , normally appears in monosyllabic form in spoken Mandarin; the rest are normally used in the polysyllabic forms of
+
+respectively. In each, the homophone was disambiguated by addition of another morpheme, typically either a near-synonym or some sort of generic word (e.g. 'head', 'thing'), the purpose of which is to indicate which of the possible meanings of the other, homophonic syllable is specifically meant.
+
+However, when one of the above words forms part of a compound, the disambiguating syllable is generally dropped and the resulting word is still disyllabic. For example,  alone, and not , appears in compounds as meaning 'stone' such as , , , , and . Although many single-syllable morphemes () can stand alone as individual words, they more often than not form multi-syllable compounds known as , which more closely resembles the traditional Western notion of a word. A Chinese  can consist of more than one character–morpheme, usually two, but there can be three or more.
+
+Examples of Chinese words of more than two syllables include , , and .
+
+All varieties of modern Chinese are analytic languages: they depend on syntax (word order and sentence structure), rather than inflectional morphology (changes in the form of a word), to indicate a word's function within a sentence. In other words, Chinese has very few grammatical inflections—it possesses no tenses, no voices, no grammatical number, and only a few articles. They make heavy use of grammatical particles to indicate aspect and mood. In Mandarin, this involves the use of particles such as , , and .
+
+Chinese has a subject–verb–object word order, and like many other languages of East Asia, makes frequent use of the topic–comment construction to form sentences. Chinese also has an extensive system of classifiers and measure words, another trait shared with neighboring languages such as Japanese and Korean. Other notable grammatical features common to all the spoken varieties of Chinese include the use of serial verb construction, pronoun dropping and the related subject dropping. Although the grammars of the spoken varieties share many traits, they do possess differences.
+
+Vocabulary
+The entire Chinese character corpus since antiquity comprises well over 50,000 characters, of which only roughly 10,000 are in use and only about 3,000 are frequently used in Chinese media and newspapers. However, Chinese characters should not be confused with Chinese words. Because most Chinese words are made up of two or more characters, there are many more Chinese words than characters. A more accurate equivalent for a Chinese character is the morpheme, as characters represent the smallest grammatical units with individual meanings in the Chinese language.
+
+Estimates of the total number of Chinese words and lexicalized phrases vary greatly. The Hanyu Da Zidian, a compendium of Chinese characters, includes 54,678 head entries for characters, including oracle bone versions. The Zhonghua Zihai (1994) contains 85,568 head entries for character definitions, and is the largest reference work based purely on character and its literary variants. The CC-CEDICT project (2010) contains 97,404 contemporary entries including idioms, technology terms and names of political figures, businesses and products. The 2009 version of the Webster's Digital Chinese Dictionary (WDCD), based on CC-CEDICT, contains over 84,000 entries.
+
+The most comprehensive pure linguistic Chinese-language dictionary, the 12-volume Hanyu Da Cidian, records more than 23,000 head Chinese characters and gives over 370,000 definitions. The 1999 revised Cihai, a multi-volume encyclopedic dictionary reference work, gives 122,836 vocabulary entry definitions under 19,485 Chinese characters, including proper names, phrases and common zoological, geographical, sociological, scientific and technical terms.
+
+The 2016 edition of Xiandai Hanyu Cidian, an authoritative one-volume dictionary on modern standard Chinese language as used in mainland China, has 13,000 head characters and defines 70,000 words.
+
+Loanwords
+Like many other languages, Chinese has absorbed a sizable number of loanwords from other cultures. Most Chinese words are formed out of native Chinese morphemes, including words describing imported objects and ideas. However, direct phonetic borrowing of foreign words has gone on since ancient times.
+
+Some early Indo-European loanwords in Chinese have been proposed, notably , , and perhaps also , , , and .
+Ancient words borrowed from along the Silk Road during the Old Chinese period include , , and . Some words were borrowed from Buddhist scriptures, including  and . Other words came from nomadic peoples to the north, such as . Words borrowed from the peoples along the Silk Road, such as , generally have Persian etymologies. Buddhist terminology is generally derived from Sanskrit or Pāli, the liturgical languages of northern India. Words borrowed from the nomadic tribes of the Gobi, Mongolian or northeast regions generally have Altaic etymologies, such as , the Chinese lute, or , but from exactly which source is not always clear.
+
+Modern borrowings
+
+Modern neologisms are primarily translated into Chinese in one of three ways: free translation (calques), phonetic translation (by sound), or a combination of the two. Today, it is much more common to use existing Chinese morphemes to coin new words to represent imported concepts, such as technical expressions and international scientific vocabulary, wherein the Latin and Greek components usually converted one-for-one into the corresponding Chinese characters. The word 'telephone' was initially loaned phonetically as  (Shanghainese  )—this word was widely used in Shanghai during the 1920s, but the later , built out of native Chinese morphemes, became prevalent. Other examples include
+
+Occasionally, compromises between the transliteration and translation approaches become accepted, such as  from  + . Sometimes translations are designed so that they sound like the original while incorporating Chinese morphemes (phono-semantic matching), such as  for the video game character 'Mario'. This is often done for commercial purposes, for example  for 'Pentium' and  for 'Subway'.
+
+Foreign words, mainly proper nouns, continue to enter the Chinese language by transcription according to their pronunciations. This is done by employing Chinese characters with similar pronunciations. For example, 'Israel' becomes , and 'Paris' becomes . A rather small number of direct transliterations have survived as common words, including , , , , , and . The bulk of these words were originally coined in Shanghai during the early 20th century, and later loaned from there into Mandarin, hence their Mandarin pronunciations occasionally being quite divergent from the English. For example, in Shanghainese  and  sound more like their English counterparts. Cantonese differs from Mandarin with some transliterations, such as  and .
+
+Western foreign words representing Western concepts have influenced Chinese since the 20th century through transcription. From French,  and  were borrowed for 'ballet' and 'champagne' respectively;  was borrowed from Italian ; 'coffee'. The influence of English is particularly pronounced: from the early 20th century, many English words were borrowed into Shanghainese, such as  and the aforementioned . Later, American soft power gave rise to , , and . Contemporary colloquial Cantonese has distinct loanwords from English, such as , , , and . With the rising popularity of the Internet, there is a current vogue in China for coining English transliterations, for example, , , and . In Taiwan, some of these transliterations are different, such as  and  for 'blog'.
+
+Another result of English influence on Chinese is the appearance in of so-called  spelled with letters from the English alphabet. These have appeared in colloquial usage, as well as in magazines and newspapers, and on websites and television:
+
+Since the 20th century, another source of words has been kanji: Japan re-molded European concepts and inventions into , and many of these words have been re-loaned into modern Chinese. Other terms were coined by the Japanese by giving new senses to existing Chinese terms or by referring to expressions used in classical Chinese literature. For example, ;  in Japanese, which in the original Chinese meant 'the workings of the state', narrowed to 'economy' in Japanese; this narrowed definition was then reimported into Chinese. As a result, these terms are virtually indistinguishable from native Chinese words: indeed, there is some dispute over some of these terms as to whether the Japanese or Chinese coined them first. As a result of this loaning, Chinese, Korean, Japanese, and Vietnamese share a corpus of linguistic terms describing modern terminology, paralleling the similar corpus of terms built from Greco-Latin and shared among European languages.
+
+Writing system
+
+The Chinese orthography centers on Chinese characters, which are written within imaginary square blocks, traditionally arranged in vertical columns, read from top to bottom down a column, and right to left across columns, despite alternative arrangement with rows of characters from left to right within a row and from top to bottom across rows (like English and other Western writing systems) having become more popular since the 20th century. Chinese characters denote morphemes independent of phonetic variation in different languages. Thus the character  is pronounced as  in Standard Chinese,  in Cantonese and  in Hokkien, a form of Min.
+
+Most written Chinese documents in the modern time, especially the more formal ones, are created using the grammar and syntax of the Standard Chinese variants, regardless of dialectical background of the author or targeted audience. This replaced the old writing language standard of Literary Chinese before the 20th century. However, vocabularies from different Chinese-speaking areas have diverged, and the divergence can be observed in written Chinese.
+
+Meanwhile, colloquial forms of various Chinese language variants have also been written down by their users, especially in less formal settings. The most prominent example of this is Written Cantonese, which has become quite popular in tabloids, instant messaging applications, and on the internet amongst Hong-Kongers and Cantonese-speakers elsewhere.
+
+Because some Chinese variants have diverged and developed a number of unique morphemes that are not found in Standard Mandarin (despite all other common morphemes), unique characters rarely used in Standard Chinese have also been created or inherited from archaic literary standard to represent these unique morphemes. For example, characters like  and  are actively used in Cantonese and Hakka, while being archaic or unused in standard written Chinese.
+
+The Chinese had no uniform phonetic transcription system for most of its speakers until the mid-20th century, although enunciation patterns were recorded in early rime books and dictionaries. Early Indian translators, working in Sanskrit and Pali, were the first to attempt to describe the sounds and enunciation patterns of Chinese in a foreign language. After the 15th century, the efforts of Jesuits and Western court missionaries resulted in some Latin character transcription/writing systems, based on various variants of Chinese languages. Some of these Latin character based systems are still being used to write various Chinese variants in the modern era.
+
+In Hunan, women in certain areas write their local Chinese language variant in Nüshu, a syllabary derived from Chinese characters. The Dungan language, considered by many a dialect of Mandarin, is nowadays written in Cyrillic, and was previously written in the Arabic script. The Dungan people are primarily Muslim and live mainly in Kazakhstan, Kyrgyzstan, and Russia; many Hui people, living mainly in China, also speak the language.
+
+Chinese characters
+
+Each Chinese character represents a monosyllabic Chinese word or morpheme. In 100 CE, the famed Han dynasty scholar Xu Shen classified characters into six categories: pictographs, simple ideographs, compound ideographs, phonetic loans, phonetic compounds and derivative characters. Only 4% were categorized as pictographs, including many of the simplest characters, such as , , , and . Between 80% and 90% were classified as phonetic compounds such as , combining a phonetic component  with a semantic component of the radical , a reduced form of . Almost all characters created since have been made using this format. The 18th-century Kangxi Dictionary classified characters under a now-common set of 214 radicals.
+
+Modern characters are styled after the regular script. Various other written styles are also used in Chinese calligraphy, including seal script, cursive script and clerical script. Calligraphy artists can write in Traditional and Simplified characters, but they tend to use Traditional characters for traditional art.
+
+There are currently two systems for Chinese characters. Traditional characters, used in Hong Kong, Taiwan, Macau, and many overseas Chinese speaking communities, largely takes their form from received character forms dating back to the late Han dynasty and standardized during the Ming. Simplified characters, introduced by the PRC in 1954 to promote mass literacy, simplifies most complex traditional glyphs to fewer strokes, many to common cursive shorthand variants. Singapore, which has a large Chinese community, was the second nation to officially adopt simplified characters, although it has also become the de facto standard for younger ethnic Chinese in Malaysia.
+
+The Internet provides practice reading each of these systems, and most Chinese readers are capable of, if not necessarily comfortable with, reading the alternative system through experience and guesswork.
+
+A well-educated Chinese reader today recognizes approximately 4,000 to 6,000 characters; approximately 3,000 characters are required to read a mainland newspaper. The PRC defines literacy amongst workers as a knowledge of 2,000 characters, though this would be only functional literacy. School-children typically learn around 2,000 characters whereas scholars may memorize up to 10,000. A large unabridged dictionary like the Kangxi dictionary, contains over 40,000 characters, including obscure, variant, rare, and archaic characters; fewer than a quarter of these characters are now commonly used.
+
+Romanization
+
+Romanization is the process of transcribing a language into the Latin script. There are many systems of romanization for the Chinese varieties, due to the lack of a native phonetic transcription until modern times. Chinese is first known to have been written in Latin characters by Western Christian missionaries in the 16th century.
+
+Today the most common romanization standard for Standard Mandarin is Hanyu Pinyin, introduced in 1956 by the PRC, and later adopted by Singapore and Taiwan. Pinyin is almost universally employed now for teaching standard spoken Chinese in schools and universities across the Americas, Australia, and Europe. Chinese parents also use Pinyin to teach their children the sounds and tones of new words. In school books that teach Chinese, the pinyin romanization is often shown below a picture of the thing the word represents, with the Chinese character alongside.
+
+The second-most common romanization system, the Wade–Giles, was invented by Thomas Wade in 1859 and modified by Herbert Giles in 1892. As this system approximates the phonology of Mandarin Chinese into English consonants and vowels–it is largely an anglicization, it may be particularly helpful for beginner Chinese speakers of an English-speaking background. Wade–Giles was found in academic use in the United States, particularly before the 1980s, and until 2009 was widely used in Taiwan.
+
+When used within European texts, the tone transcriptions in both pinyin and Wade–Giles are often left out for simplicity; Wade–Giles's extensive use of apostrophes is also usually omitted. Thus, most Western readers will be much more familiar with Beijing than they will be with  (pinyin), and with  than  (Wade–Giles). This simplification presents syllables as homophones which really are none, and therefore exaggerates the number of homophones almost by a factor of four.
+
+For comparison:
+
+Other systems include Gwoyeu Romatzyh, the French EFEO, the Yale system (invented for use by US troops during World War II), as well as distinct systems for the phonetic requirements of Cantonese, Min Nan, Hakka, and other varieties.
+
+Other phonetic transcriptions
+Chinese varieties have been phonetically transcribed into many other writing systems over the centuries. The 'Phags-pa script, for example, has been very helpful in reconstructing the pronunciations of premodern forms of Chinese.
+
+Zhuyin (colloquially bopomofo), a semi-syllabary is still widely used in Taiwan's elementary schools to aid standard pronunciation. Although zhuyin characters are reminiscent of katakana script, there is no source to substantiate the claim that Katakana was the basis for the zhuyin system. A comparison table of zhuyin to pinyin exists in the zhuyin article. Syllables based on pinyin and zhuyin can also be compared by looking at the following articles:
+ Pinyin table
+ Zhuyin table
+
+There are also at least two systems of cyrillization for Chinese. The most widespread is the Palladius system.
+
+As a foreign language
+
+With the growing importance and influence of China's economy globally, Standard Chinese instruction has been gaining popularity in schools throughout East Asia, Southeast Asia, and the Western world.
+
+Besides Mandarin, Cantonese is the only other Chinese language that is widely taught as a foreign language, largely due to the economic and cultural influence of Hong Kong and its widespread usage among significant Overseas Chinese communities.
+
+In 1991 there were 2,000 foreign learners taking China's official Chinese Proficiency Test (HSK), comparable to the English Cambridge Certificate, but by 2005 the number of candidates had risen sharply to 117,660 and in 2010 to 750,000.
+
+See also 
+ Chinese characters
+ Chinese character orders
+ Chinese exclamative particles
+ Chinese honorifics
+ Chinese numerals
+ Chinese punctuation
+ Classical Chinese grammar
+ Chengyu
+ Han unification
+ Languages of China
+ North American Conference on Chinese Linguistics
+ Protection of the Varieties of Chinese
+
+Notes
+
+References
+
+Citations
+
+Sources
+
+Further reading 
+   On the history of the standardization of Mandarin as the Chiense primary national dialect.
+
+External links 
+
+ Classical Chinese texts – Chinese Text Project
+ Marjorie Chan's ChinaLinks;  at the Ohio State University with hundreds of links to Chinese related web pages
+
+ 
+Analytic languages
+Isolating languages
+Languages of China
+Languages of Hong Kong
+Languages of Macau
+Languages of Singapore
+Languages of Taiwan
+Languages with own distinct writing systems
+Lingua francas
+Language
+Complex analysis, traditionally known as the theory of functions of a complex variable, is the branch of mathematical analysis that investigates functions of complex numbers. It is helpful in many branches of mathematics, including algebraic geometry, number theory, analytic combinatorics, applied mathematics; as well as in physics, including the branches of hydrodynamics, thermodynamics, quantum mechanics, and twistor theory. By extension, use of complex analysis also has applications in engineering fields such as nuclear, aerospace, mechanical and electrical engineering.
+
+As a differentiable function of a complex variable is equal to its Taylor series (that is, it is analytic), complex analysis is particularly concerned with analytic functions of a complex variable (that is, holomorphic functions).
+
+History 
+
+Complex analysis is one of the classical branches in mathematics, with roots in the 18th century and just prior. Important mathematicians associated with complex numbers include Euler, Gauss, Riemann, Cauchy, Gösta Mittag-Leffler, Weierstrass, and many more in the 20th century. Complex analysis, in particular the theory of conformal mappings, has many physical applications and is also used throughout analytic number theory. In modern times, it has become very popular through a new boost from complex dynamics and the pictures of fractals produced by iterating holomorphic functions.  Another important application of complex analysis is in string theory which examines conformal invariants in quantum field theory.
+
+Complex functions 
+
+A complex function is a function from complex numbers to complex numbers. In other words, it is a function that has a subset of the complex numbers as a domain and the complex numbers as a codomain. Complex functions are generally assumed to have a domain that contains a nonempty open subset of the complex plane.
+
+For any complex function, the values  from the domain and their images  in the range may be separated into real and imaginary parts:
+
+ 
+
+where  are all real-valued.
+
+In other words, a complex function  may be decomposed into
+
+  and 
+
+i.e., into two real-valued functions (, ) of two real variables (, ).
+
+Similarly, any complex-valued function  on an arbitrary set  (is isomorphic to, and therefore, in that sense, it) can be considered as an ordered pair of two real-valued functions:  or, alternatively, as a vector-valued function from  into 
+
+Some properties of complex-valued functions (such as continuity) are nothing more than the corresponding properties of vector valued functions of two real variables. Other concepts of complex analysis, such as differentiability, are direct generalizations of the similar concepts for real functions, but may have very different properties. In particular, every differentiable complex function is analytic (see next section), and two differentiable functions that are equal in a neighborhood of a point are equal on the intersection of their domain (if the domains are connected). The latter property is the basis of the principle of analytic continuation which allows extending every real analytic function in a unique way for getting a complex analytic function whose domain is the whole complex plane with a finite number of curve arcs removed. Many basic and special complex functions are defined in this way, including the complex exponential function, complex logarithm functions, and trigonometric functions.
+
+Holomorphic functions 
+
+Complex functions that are differentiable at every point of an open subset  of the complex plane are said to be holomorphic on  In the context of complex analysis, the derivative of  at  is defined to be
+
+ 
+
+Superficially, this definition is formally analogous to that of the derivative of a real function.  However, complex derivatives and differentiable functions behave in significantly different ways compared to their real counterparts.  In particular, for this limit to exist, the value of the difference quotient must approach the same complex number, regardless of the manner in which we approach  in the complex plane.  Consequently, complex differentiability has much stronger implications than real differentiability. For instance, holomorphic functions are infinitely differentiable, whereas the existence of the nth derivative need not imply the existence of the (n + 1)th derivative for real functions.  Furthermore, all holomorphic functions satisfy the stronger condition of analyticity, meaning that the function is, at every point in its domain, locally given by a convergent power series. In essence, this means that functions holomorphic on  can be approximated arbitrarily well by polynomials in some neighborhood of every point in . This stands in sharp contrast to differentiable real functions; there are infinitely differentiable real functions that are nowhere analytic; see .
+
+Most elementary functions, including the exponential function, the trigonometric functions, and all polynomial functions, extended appropriately to complex arguments as functions  are holomorphic over the entire complex plane, making them entire functions, while rational functions , where p and q are polynomials, are holomorphic on domains that exclude points where q is zero.  Such functions that are holomorphic everywhere except a set of isolated points are known as meromorphic functions.  On the other hand, the functions   and  are not holomorphic anywhere on the complex plane, as can be shown by their failure to satisfy the Cauchy–Riemann conditions (see below).
+
+An important property of holomorphic functions is the relationship between the partial derivatives of their real and imaginary components, known as the Cauchy–Riemann conditions.  If , defined by  where  is holomorphic on a region  then for all ,
+
+In terms of the real and imaginary parts of the function, u and v, this is equivalent to the pair of equations  and , where the subscripts indicate partial differentiation.  However, the Cauchy–Riemann conditions do not characterize holomorphic functions, without additional continuity conditions (see Looman–Menchoff theorem).
+
+Holomorphic functions exhibit some remarkable features.  For instance, Picard's theorem asserts that the range of an entire function can take only three possible forms:   or  for some  In other words, if two distinct complex numbers  and  are not in the range of an entire function  then  is a constant function.  Moreover, a holomorphic function on a connected open set is determined by its restriction to any nonempty open subset.
+
+Conformal map
+
+Major results 
+
+One of the central tools in complex analysis is the line integral. The line integral around a closed path of a function that is holomorphic everywhere inside the area bounded by the closed path is always zero, as is stated by the Cauchy integral theorem. The values of such a holomorphic function inside a disk can be computed by a path integral on the disk's boundary (as shown in Cauchy's integral formula). Path integrals in the complex plane are often used to determine complicated real integrals, and here the theory of residues among others is applicable (see methods of contour integration). A "pole" (or isolated singularity) of a function is a point where the function's value becomes unbounded, or "blows up". If a function has such a pole, then one can compute the function's residue there, which can be used to compute path integrals involving the function; this is the content of the powerful residue theorem. The remarkable behavior of holomorphic functions near essential singularities is described by Picard's theorem. Functions that have only poles but no essential singularities are called meromorphic. Laurent series are the complex-valued equivalent to Taylor series, but can be used to study the behavior of functions near singularities through infinite sums of more well understood functions, such as polynomials.
+
+A bounded function that is holomorphic in the entire complex plane must be constant; this is Liouville's theorem. It can be used to provide a natural and short proof for the fundamental theorem of algebra which states that the field of complex numbers is algebraically closed.
+
+If a function is holomorphic throughout a connected domain then its values are fully determined by its values on any smaller subdomain.  The function on the larger domain is said to be analytically continued from its values on the smaller domain.  This allows the extension of the definition of functions, such as the Riemann zeta function, which are initially defined in terms of infinite sums that converge only on limited domains to almost the entire complex plane.  Sometimes, as in the case of the natural logarithm, it is impossible to analytically continue a holomorphic function to a non-simply connected domain in the complex plane but it is possible to extend it to a holomorphic function on a closely related surface known as a Riemann surface.
+
+All this refers to complex analysis in one variable. There is also a very rich theory of complex analysis in more than one complex dimension in which the analytic properties such as power series expansion carry over whereas most of the geometric properties of holomorphic functions in one complex dimension (such as conformality) do not carry over. The Riemann mapping theorem about the conformal relationship of certain domains in the complex plane, which may be the most important result in the one-dimensional theory, fails dramatically in higher dimensions.
+
+A major application of certain complex spaces is in quantum mechanics as wave functions.
+
+See also 
+ Complex geometry
+ Hypercomplex analysis
+ Vector calculus
+ List of complex analysis topics
+ Monodromy theorem
+ Real analysis
+ Riemann–Roch theorem
+ Runge's theorem
+
+References
+
+Sources 
+ Ablowitz, M. J. & A. S. Fokas, Complex Variables: Introduction and Applications (Cambridge, 2003).
+ Ahlfors, L., Complex Analysis (McGraw-Hill, 1953).
+ Cartan, H., Théorie élémentaire des fonctions analytiques d'une ou plusieurs variables complexes. (Hermann, 1961). English translation, Elementary Theory of Analytic Functions of One or Several Complex Variables. (Addison-Wesley, 1963).
+ Carathéodory, C., Funktionentheorie. (Birkhäuser, 1950). English translation, Theory of Functions of a Complex Variable (Chelsea, 1954). [2 volumes.]
+ Carrier, G. F., M. Krook, & C. E. Pearson, Functions of a Complex Variable: Theory and Technique. (McGraw-Hill, 1966).
+ Conway, J. B., Functions of One Complex Variable. (Springer, 1973).
+ Fisher, S., Complex Variables. (Wadsworth & Brooks/Cole, 1990).
+ Forsyth, A., Theory of Functions of a Complex Variable (Cambridge, 1893).
+ Freitag, E. & R. Busam, Funktionentheorie. (Springer, 1995). English translation, Complex Analysis. (Springer, 2005).
+ Goursat, E., Cours d'analyse mathématique, tome 2. (Gauthier-Villars, 1905). English translation, A course of mathematical analysis, vol. 2, part 1: Functions of a complex variable. (Ginn, 1916).
+ Henrici, P., Applied and Computational Complex Analysis (Wiley).  [Three volumes: 1974, 1977, 1986.]
+ Kreyszig, E., Advanced Engineering Mathematics. (Wiley, 1962).
+ Lavrentyev, M. & B. Shabat, Методы теории функций комплексного переменного. (Methods of the Theory of Functions of a Complex Variable). (1951, in Russian).
+ Markushevich, A. I., Theory of Functions of a Complex Variable, (Prentice-Hall, 1965). [Three volumes.]
+ Marsden & Hoffman, Basic Complex Analysis. (Freeman, 1973).
+ Needham, T., Visual Complex Analysis. (Oxford, 1997). http://usf.usfca.edu/vca/
+ Remmert, R., Theory of Complex Functions. (Springer, 1990).
+ Rudin, W., Real and Complex Analysis. (McGraw-Hill, 1966).
+ Shaw, W. T., Complex Analysis with Mathematica (Cambridge, 2006).
+ Stein, E. & R. Shakarchi, Complex Analysis. (Princeton, 2003).
+ Sveshnikov, A. G. & A. N. Tikhonov, Теория функций комплексной переменной. (Nauka, 1967). English translation, The Theory Of Functions Of A Complex Variable (MIR, 1978).
+ Titchmarsh, E. C., The Theory of Functions. (Oxford, 1932).
+ Wegert, E., Visual Complex Functions. (Birkhäuser, 2012).
+ Whittaker, E. T. & G. N. Watson, A Course of Modern Analysis. (Cambridge, 1902). 3rd ed. (1920)
+
+External links 
+
+ Wolfram Research's MathWorld Complex Analysis Page
+The history of China spans several millennia across a wide geographical area. Each region now considered part of the Chinese world has experienced periods of unity, fracture, prosperity, and hardship. Classical Chinese civilization first emerged in the Yellow River valley, which along with the Yangtze and Pearl River basins now constitute the geographic core of China and have for the majority of its imperial history. China maintains a rich diversity of ethnic and linguistic people groups. The traditional lens for viewing Chinese history is the dynastic cycle: imperial dynasties rise and fall, and are ascribed certain achievements. Throughout pervades the narrative that Chinese civilization can be traced as an unbroken thread many thousands of years into the past, making it one of the cradles of civilization. At various times, states representative of a dominant Chinese culture have directly controlled areas stretching as far west as the Tian Shan, the Tarim Basin, and the Himalayas, as far north as the Sayan Mountains, and as far south as the delta of the Red River.
+
+The Neolithic period saw increasingly non-parochial societies begin to emerge along the Yellow and Yangtze rivers. For example, the Erlitou culture existed throughout the central plains of China during the era traditionally attributed to the Xia dynasty (  
+2070–1600 BCE) by Chinese historiographers in foundational works like the Records of the Grand Historian—a text written around 1700 years after the date assigned to the fall of the Xia. The earliest surviving written Chinese dates to roughly 1250BCE, consisting of divinations inscribed on oracle bones. Chinese bronze inscriptions, ritual texts dedicated to deceased ancestors, form another large corpus of early Chinese writing. The earliest strata of received literature in Chinese include poetry, divination, and records of official speeches. China is believed to be one of a very few loci of independent invention of writing, and the earliest surviving records display an already-mature written language. The culture remembered by the earliest extant literature is that of the decentralized Zhou dynasty ( 1046–256 BCE), during which bureaucratization increased, chariot-based warfare was superseded by infantry, the earliest classical texts took shape, the Mandate of Heaven was introduced, and philosophies such as Confucianism, Taoism, and Legalism were first articulated.
+
+China was first united under a single imperial state under Qin Shi Huang in . Orthography, weights, measures, and law were all standardized. Shortly thereafter, China entered its classical age with the Han dynasty ( – CE 220), marking a critical period, a term for the Chinese language is still "Han language", and the dominant Chinese ethnic group is known as Han Chinese. The Chinese empire reached some of its farthest geographical extents during this period. Confucianism was officially adopted and its core texts were edited into their received forms.  Wealthy landholding families independent of the ancient aristocracy began to wield significant power. Han technology can be considered on par with that of the contemporaneous Roman Empire: mass production of paper aided the proliferation of written documents, and the written dialect of this period was imitated for millennia afterwards. China also became known internationally for its sericulture. The Han imperial order finally collapsed in the late 2nd century, and China would not see a comparable level of political stability for another 400 years. During this period, Buddhism began to have a significant impact on Chinese culture. Calligraphy, art, historiography, and storytelling flourished. Wealthy families gained even more power compared to the central government. The Yangtze River valley was incorporated into the dominant cultural sphere.
+
+The realm saw a period of unity with the Sui dynasty unifying the realm in the late 6th century, soon giving way to the long-lived Tang dynasty (608–907), regarded as another Chinese golden age. The Tang dynasty saw flourishing developments in science, technology, poetry, economics, and geographical influence. China's first officially recognized empress, Wu Zetian, reigned during the dynasty's first century. Buddhism was officially adopted by Tang emperors, while orthodox Confucianism was articulated by scholars. Thus, "Tang people" is the other common demonym for the Han ethnic group. After the Tang's decline led to the Five Dynasties and Ten Kingdoms period, the Song dynasty (960–1279) saw the maximal extent of imperial Chinese cosmopolitan development. Mechanical printing was introduced, and many of the earliest surviving witnesses of certain texts are wood-block prints from this era. Song scientific advancement led the world, and the imperial examination system gave ideological structure to the political bureaucracy. Confucianism and Taoism were fully knit together in Neo-Confucianism. Over the course of the 13th century, the Mongol Empire conquered all of China, culminating in the Mongol Yuan dynasty founded in 1271. Contact with Europe began to increase during this time, symbolized by the reports of Marco Polo. Achievements under the subsequent Ming dynasty (1368–1644) include global exploration, fine porcelain, and many extant public works projects, such as those restoring the Grand Canal and Great Wall. Three of the four Classic Chinese Novels were written during the Ming.
+
+The Qing dynasty that succeeded the Ming placed ethnic Manchu officials in important offices, while also becoming sinicized. The Qianlong emperor ( 1735–1796) commissioned a complete encyclopaedia of imperial libraries, totaling nearly a billion words. Imperial China reached its greatest territorial extent of during the Qing, but China came into increasing conflict with European powers, culminating in the Opium Wars and subsequent unequal treaties. The 1911 Xinhai Revolution, led by Sun Yat-sen and others, created the modern Republic of China. From 1927, a costly civil war between the Nationalist government under Chiang Kai-shek and the Chinese Communist Party raged, and the industrialized Empire of Japan also invaded the divided country. After the Communist victory, Mao Zedong proclaimed the People's Republic of China (PRC) in 1949, with the nationalists retreating to Taiwan. Today, both governments still claim to be the legitimate government of China. The PRC has slowly accumulated the majority of diplomatic recognition over the 20th century, and Taiwan's status remains a perennial issue. From 1966 to 1976, the Cultural Revolution helped consolidate Mao's power approaching the end of his life. After his death, the government began economic reforms under Deng Xiaoping. As a result, China became the world's fastest-growing major economy. China had been the most populous nation in the world for decades, until it was surpassed by India in 2023.
+
+Prehistory
+
+Paleolithic (1.7  – 12 )
+
+The archaic human species of Homo erectus arrived in Eurasia sometime between 1.3 and 1.8 million years ago (Ma) and numerous remains of its subspecies have been found in what is now China. The oldest of these is the southwestern Yuanmou Man (; in Yunnan), dated to  Ma, which lived in a mixed bushland-forest environment alongside chalicotheres, deer, the elephant Stegodon, rhinos, cattle, pigs, and the giant short-faced hyaena. The better-known Peking Man (; near Beijing) of 700,000–400,000 BP, was discovered in the Zhoukoudian cave alongside scrapers, choppers, and, dated slightly later, points, burins, and awls. Other Homo erectus fossils have been found widely throughout the region, including the northwestern Lantian Man (; in Shaanxi) as well minor specimens in northeastern Liaoning and southern Guangdong. The dates of most Paleolithic sites were long debated but have been more reliably established based on modern magnetostratigraphy: Majuangou at 1.66–1.55 Ma, Lanpo at 1.6 Ma, Xiaochangliang at 1.36 Ma, Xiantai at 1.36 Ma, Banshan at 1.32 Ma, Feiliang at 1.2 Ma and Donggutuo at 1.1 Ma. Evidence of fire use by Homo erectus occurred between 1–1.8 million years BP at the archaeological site of Xihoudu, Shanxi Province.
+
+The circumstances surrounding the evolution of Homo erectus to contemporary H. sapiens is debated; the three main theories include the dominant "Out of Africa" theory (OOA), the regional continuity model and the admixture variant of the OOA hypothesis. Regardless, the earliest modern humans have been dated to China at 120,000–80,000 BP based on fossilized teeth discovered in Fuyan Cave of Dao County, Hunan. The larger animals which lived alongside these humans include the extinct Ailuropoda baconi panda, the Crocuta ultima hyena, the Stegodon, and the giant tapir. Evidence of Middle Palaeolithic Levallois technology has been found in the lithic assemblage of Guanyindong Cave site in southwest China, dated to approximately 170,000–80,000 years ago.
+
+Neolithic
+
+The Neolithic age in China is considered to have begun about 10,000 years ago. Because the Neolithic is conventionally defined by the presence of agriculture, it follows that the Neolithic began at different times in the various regions of what is now China. Agriculture in China developed gradually, with initial domestication of a few grains and animals gradually expanding with the addition of many others over subsequent millennia. The earliest evidence of cultivated rice, found by the Yangtze River, was carbon-dated to 8,000 years ago. Early evidence for millet agriculture in the Yellow River valley was radiocarbon-dated to about 7000 BC. The Jiahu site is one of the best preserved early agricultural villages (7000 to 5800 BC). At Damaidi in Ningxia, 3,172 cliff carvings dating to 6000–5000 BC have been discovered, "featuring 8,453 individual characters such as the sun, moon, stars, gods and scenes of hunting or grazing", according to researcher Li Xiangshi. Written symbols, sometimes called proto-writing, were found at the site of Jiahu, which is dated around 7000 BC, Damaidi around 6000 BC, Dadiwan from 5800 BC to 5400 BC, and Banpo dating from the 5th millennium BC. With agriculture came increased population, the ability to store and redistribute crops, and the potential to support specialist craftsmen and administrators, which may have existed at late Neolithic sites like Taosi and the Liangzhu culture in the Yangtze delta. The cultures of the middle and late Neolithic in the central Yellow River valley are known respectively as the Yangshao culture (5000 BC to 3000 BC) and the Longshan culture (3000 BC to 2000 BC). Pigs and dogs were the earliest domesticated animals in the region, and after about 3000 BC domesticated cattle and sheep arrived from Western Asia. Wheat also arrived at this time but remained a minor crop. Fruit such as peaches, cherries and oranges, as well as chickens and various vegetables, were also domesticated in Neolithic China.
+
+Bronze Age
+
+Bronze artifacts have been found at the Majiayao culture site (between 3100 and 2700 BC). The Bronze Age is also represented at the Lower Xiajiadian culture (2200–1600 BC) site in northeast China. Sanxingdui located in what is now Sichuan is believed to be the site of a major ancient city, of a previously unknown Bronze Age culture (between 2000 and 1200 BC). The site was first discovered in 1929 and then re-discovered in 1986. Chinese archaeologists have identified the Sanxingdui culture to be part of the ancient kingdom of Shu, linking the artifacts found at the site to its early legendary kings.
+
+Ferrous metallurgy begins to appear in the late 6th century in the Yangzi Valley.
+A bronze hatchet with a blade of meteoric iron excavated near the city of Gaocheng in Shijiazhuang (now Hebei) has been dated to the 14th century BC.
+An Iron Age culture of the Tibetan Plateau has tentatively been associated with the Zhang Zhung culture described in early Tibetan writings.
+
+Ancient China
+
+Chinese historians in later periods were accustomed to the notion of one dynasty succeeding another, but the political situation in early China was much more complicated. Hence, as some scholars of China suggest, the Xia and the Shang can refer to political entities that existed concurrently, just as the early Zhou existed at the same time as the Shang. This bears similarities to how China, both contemporaneously and later, has been divided into states that were not one region, legally or culturally.
+
+The earliest period once considered historical was the legendary era of the sage-emperors Yao, Shun, and Yu. Traditionally, the abdication system was prominent in this period, with Yao yielding his throne to Shun, who abdicated to Yu, who founded the Xia dynasty.
+
+Xia dynasty (2070–1600 BC)
+
+The Xia dynasty of China (from ) is the earliest of the Three Dynasties described in ancient historical records such as Sima Qian's Records of the Grand Historian and Bamboo Annals. The dynasty is generally considered mythical by Western scholars, but in China it is usually associated with the early Bronze Age site at Erlitou that was excavated in Henan in 1959. Since no writing was excavated at Erlitou or any other contemporaneous site, there is not enough evidence to prove whether the Xia dynasty ever existed. Some archaeologists claim that the Erlitou site was the capital of the Xia Dynasty. In any case, the site of Erlitou had a level of political organization that would not be incompatible with the legends of Xia recorded in later texts. More importantly, the Erlitou site has the earliest evidence for an elite who conducted rituals using cast bronze vessels, which would later be adopted by the Shang and Zhou.
+
+Shang dynasty (1600–1046 BC)
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+Archaeological evidence, such as oracle bones and bronzes, as well as transmitted texts attest to the historical existence of the Shang dynasty (–1046 BC). Findings from the earlier Shang period come from excavations at Erligang, in present-day Zhengzhou. Findings from the later Shang or Yin (殷) period, were found in profusion at Anyang, in modern-day Henan, the last of the Shang's capitals. The findings at Anyang include the earliest written record of the Chinese so far discovered: inscriptions of divination records in ancient Chinese writing on the bones or shells of animals—the "oracle bones", dating from around 1250 to 1046 BC.
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+A series of at least twenty-nine kings reigned over the Shang dynasty. Throughout their reigns, according to the Shiji, the capital city was moved six times. The final and most important move was to Yin during the reign of Pan Geng, around 1300 BC. The term Yin dynasty has been synonymous with the Shang dynasty in history, although it has lately been used to refer specifically to the latter half of the Shang dynasty.
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+Although written records found at Anyang confirm the existence of the Shang dynasty, Western scholars are often hesitant to associate settlements that are contemporaneous with the Anyang settlement with the Shang dynasty. For example, archaeological findings at Sanxingdui suggest a technologically advanced civilization culturally unlike Anyang. The evidence is inconclusive in proving how far the Shang realm extended from Anyang. The leading hypothesis is that Anyang, ruled by the same Shang in the official history, coexisted and traded with numerous other culturally diverse settlements in the area that is now referred to as China proper.
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+Zhou dynasty (1046–256 BC)
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+The Zhou dynasty (1046 BC to about 256 BC) is the longest-lasting dynasty in Chinese history, though its power declined steadily over the almost eight centuries of its existence. In the late 2nd millennium BC, the Zhou dynasty arose in the Wei River valley of modern western Shaanxi Province, where they were appointed Western Protectors by the Shang. A coalition led by the ruler of the Zhou, King Wu, defeated the Shang at the Battle of Muye. They took over most of the central and lower Yellow River valley and enfeoffed their relatives and allies in semi-independent states across the region. Several of these states eventually became more powerful than the Zhou kings.
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+The kings of Zhou invoked the concept of the Mandate of Heaven to legitimize their rule, a concept that was influential for almost every succeeding dynasty. Like Shangdi, Heaven (tian) ruled over all the other gods, and it decided who would rule China. It was believed that a ruler lost the Mandate of Heaven when natural disasters occurred in great number, and when, more realistically, the sovereign had apparently lost his concern for the people. In response, the royal house would be overthrown, and a new house would rule, having been granted the Mandate of Heaven.
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+The Zhou established two capitals Zongzhou (near modern Xi'an) and Chengzhou (Luoyang), with the king's court moving between them regularly. The Zhou alliance gradually expanded eastward into Shandong, southeastward into the Huai River valley, and southward into the Yangtze River valley.
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+Spring and Autumn period (722–476 BC)
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+In 771 BC, King You and his forces were defeated in the Battle of Mount Li by rebel states and Quanrong barbarians. The rebel aristocrats established a new ruler, King Ping, in Luoyang, beginning the second major phase of the Zhou dynasty: the Eastern Zhou period, which is divided into the Spring and Autumn and Warring States periods. The former period is named after the famous Spring and Autumn Annals. The decline of central power left a vacuum. The Zhou empire now consisted of hundreds of tiny states, some of them only as large as a walled town and surrounding land. These states began to fight against one another and vie for hegemony. The more powerful states tended to conquer and incorporate the weaker ones, so the number of states declined over time. By the 6th century BC most small states had disappeared by being annexed and just a few large and powerful principalities remained. Some southern states, such as Chu and Wu, claimed independence from the Zhou, who undertook wars against some of them (Wu and Yue). Many new cities were established in this period and society gradually became more urbanized and commercialized. Many famous individuals such as Laozi, Confucius and Sun Tzu lived during this chaotic period.
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+Conflict in this period occurred both between and within states. Warfare between states forced the surviving states to develop better administrations to mobilize more soldiers and resources. Within states there was constant jockeying between elite families. For example, the three most powerful families in the Jin state—Zhao, Wei and Han—eventually overthrew the ruling family and partitioned the state between them.
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+The Hundred Schools of Thought of classical Chinese philosophy began blossoming during this period and the subsequent Warring States period. Such influential intellectual movements as Confucianism, Taoism, Legalism and Mohism were founded, partly in response to the changing political world. The first two philosophical thoughts would have an enormous influence on Chinese culture.
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+Warring States period (476–221 BC)
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+After further political consolidations, seven prominent states remained during the 5th centuryBC. The years in which these states battled each other is known as the Warring States period. Though the Zhou king nominally remained as such until 256BC, he was largely a figurehead that held little real power.
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+Numerous developments were made during this period in the areas of culture and mathematics—including the Zuo Zhuan within the Spring and Autumn Annals (a literary work summarizing the preceding Spring and Autumn period), and the bundle of 21 bamboo slips from the Tsinghua collection, dated to 305BC—being the world's earliest known example of a two-digit, base-10 multiplication table. The Tsinghua collection indicates that sophisticated commercial arithmetic was already established during this period.
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+As neighboring territories of the seven states were annexed (including areas of modern Sichuan and Liaoning), they were now to be governed under an administrative system of commanderies and prefectures. This system had been in use elsewhere since the Spring and Autumn period, and its influence on administration would prove resilient—its terminology can still be seen in the contemporaneous sheng and xian ("provinces" and "counties") of contemporary China.
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+The state of Qin became dominant in the waning decades of the Warring States period, conquering the Shu capital of Jinsha on the Chengdu Plain; and then eventually driving Chu from its place in the Han River valley. Qin imitated the administrative reforms of the other states, thereby becoming a powerhouse. Its final expansion began during the reign of Ying Zheng, ultimately unifying the other six regional powers, and enabling him to proclaim himself as China's first emperor—known to history as Qin Shi Huang.
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+Imperial China
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+Early imperial China
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+Qin dynasty (221–206 BC)
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+Ying Zheng's establishment of the Qin dynasty () in 221 BC effectively formalized the region as an empire, rather than a state, and its pivotal status probably led to "Qin" () later evolving into the Western term "". To emphasize his sole rule, Zheng proclaimed himself  (; "First August Emperor"); the  title, derived from Chinese mythology, become the standard for subsequent rulers. Based in Xianyang, the empire was a centralized bureaucratic monarchy, a governing scheme which dominated the future of Imperial China. In an effort to improve the Zhou's perceived failures, this system consisted of more than 36 commanderies (; ), made up of counties (; ) and progressively smaller divisions, each with a local leader.
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+Many aspects of society were informed by Legalism, a state ideology promoted by the emperor and his chancellor Li Si that was introduced at an earlier time by Shang Yang. In legal matters this philosophy emphasized mutual responsibility in disputes and severe punishments, while economic practices included the general encouragement of agriculture and repression of trade. Reforms occurred in weights and measures, writing styles (seal script) and metal currency (Ban Liang), all of which were standardized. Traditionally, Qin Shi Huang is regarded as ordering a mass burning of books and the live burial of scholars under the guise of Legalism, though contemporary scholars express considerable doubt on the historicity of this event. Despite its importance, Legalism was probably supplemented in non-political matters by Confucianism for social and moral beliefs and the five-element Wuxing () theories for cosmological thought.
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+The Qin administration kept exhaustive records on their population, collecting information on their sex, age, social status and residence. Commoners, who made up over 90% of the population, "suffered harsh treatment" according to the historian Patricia Buckley Ebrey, as they were often conscripted into forced labor for the empire's construction projects. This included a massive system of imperial highways in 220 BC, which ranged around  altogether. Other major construction projects were assigned to the general Meng Tian, who concurrently led a successful campaign against the northern Xiongnu peoples (210s BC), reportedly with 300,000 troops. Under Qin Shi Huang's orders, Meng supervised the combining of numerous ancient walls into what came to be known as the Great Wall of China and oversaw the building of a  straight highway between northern and southern China.
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+After Qin Shi Huang's death the Qin government drastically deteriorated and eventually capitulated in 207 BC after the Qin capital was captured and sacked by rebels, which would ultimately lead to the establishment of the Han Empire.
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+Han dynasty (206 BC – AD 220)
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+Western Han
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+The Han dynasty was founded by Liu Bang, who emerged victorious in the Chu–Han Contention that followed the fall of the Qin dynasty. A golden age in Chinese history, the Han dynasty's long period of stability and prosperity consolidated the foundation of China as a unified state under a central imperial bureaucracy, which was to last intermittently for most of the next two millennia. During the Han dynasty, territory of China was extended to most of the China proper and to areas far west. Confucianism was officially elevated to orthodox status and was to shape the subsequent Chinese civilization. Art, culture and science all advanced to unprecedented heights. With the profound and lasting impacts of this period of Chinese history, the dynasty name "Han" had been taken as the name of the Chinese people, now the dominant ethnic group in modern China, and had been commonly used to refer to Chinese language and written characters.
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+After the initial laissez-faire policies of Emperors Wen and Jing, the ambitious Emperor Wu brought the empire to its zenith. To consolidate his power, he disenfranchised the majority of imperial relatives, appointing military governors to control their former lands. As a further step, he extended patronage to Confucianism, which emphasizes stability and order in a well-structured society. Imperial Universities were established to support its study. At the urging of his Legalist advisors, however, he also strengthened the fiscal structure of the dynasty with government monopolies.
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+Major military campaigns were launched to weaken the nomadic Xiongnu Empire, limiting their influence north of the Great Wall. Along with the diplomatic efforts led by Zhang Qian, the sphere of influence of the Han Empire extended to the states in the Tarim Basin, opened up the Silk Road that connected China to the west, stimulating bilateral trade and cultural exchange. To the south, various small kingdoms far beyond the Yangtze River Valley were formally incorporated into the empire.
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+Emperor Wu also dispatched a series of military campaigns against the Baiyue tribes. The Han annexed Minyue in 135 BC and 111 BC, Nanyue in 111 BC, and Dian in 109 BC. Migration and military expeditions led to the cultural assimilation of the south. It also brought the Han into contact with kingdoms in Southeast Asia, introducing diplomacy and trade.
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+After Emperor Wu the empire slipped into gradual stagnation and decline. Economically, the state treasury was strained by excessive campaigns and projects, while land acquisitions by elite families gradually drained the tax base. Various consort clans exerted increasing control over strings of incompetent emperors and eventually the dynasty was briefly interrupted by the usurpation of Wang Mang.
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+Xin dynasty
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+In AD 9 the usurper Wang Mang claimed that the Mandate of Heaven called for the end of the Han dynasty and the rise of his own, and he founded the short-lived Xin dynasty. Wang Mang started an extensive program of land and other economic reforms, including the outlawing of slavery and land nationalization and redistribution. These programs, however, were never supported by the landholding families, because they favored the peasants. The instability of power brought about chaos, uprisings, and loss of territories. This was compounded by mass flooding of the Yellow River; silt buildup caused it to split into two channels and displaced large numbers of farmers. Wang Mang was eventually killed in Weiyang Palace by an enraged peasant mob in AD 23.
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+Eastern Han
+Emperor Guangwu reinstated the Han dynasty with the support of landholding and merchant families at Luoyang, east of the former capital Xi'an. Thus, this new era is termed the Eastern Han dynasty. With the capable administrations of Emperors Ming and Zhang, former glories of the dynasty were reclaimed, with brilliant military and cultural achievements. The Xiongnu Empire was decisively defeated. The diplomat and general Ban Chao further expanded the conquests across the Pamirs to the shores of the Caspian Sea, thus reopening the Silk Road, and bringing trade, foreign cultures, along with the arrival of Buddhism. With extensive connections with the west, the first of several Roman embassies to China were recorded in Chinese sources, coming from the sea route in AD 166, and a second one in AD 284.
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+The Eastern Han dynasty was one of the most prolific eras of science and technology in ancient China, notably the historic invention of papermaking by Cai Lun, and the numerous scientific and mathematical contributions by the famous polymath Zhang Heng.
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+Six Dynasties
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+Three Kingdoms (AD 220–280)
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+By the 2nd century, the empire declined amidst land acquisitions, invasions, and feuding between consort clans and eunuchs. The Yellow Turban Rebellion broke out in AD 184, ushering in an era of warlords. In the ensuing turmoil, three states emerged, trying to gain predominance and reunify the land, giving this historical period its name. The classic historical novel Romance of the Three Kingdoms dramatizes events of this period.
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+The warlord Cao Cao reunified the north in 208, and in 220 his son accepted the abdication of Emperor Xian of Han, thus initiating the Wei dynasty. Soon, Wei's rivals Shu and Wu proclaimed their independence. This period was characterized by a gradual decentralization of the state that had existed during the Qin and Han dynasties, and an increase in the power of great families.
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+In 266, the Jin dynasty overthrew the Wei and later unified the country in 280, but this union was short-lived.
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+Jin dynasty (AD 266–420)
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+The Jin dynasty was severely weakened by War of the Eight Princes and lost control of northern China after non-Han Chinese settlers rebelled and captured Luoyang and Chang'an. In 317, the Jin prince Sima Rui, based in modern-day Nanjing, became emperor and continued the dynasty, now known as the Eastern Jin, which held southern China for another century. Prior to this move, historians refer to the Jin dynasty as the Western Jin.
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+Sixteen Kingdoms (AD 304–439)
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+Northern China fragmented into a series of independent states known as the Sixteen Kingdoms, most of which were founded by Xiongnu, Xianbei, Jie, Di and Qiang rulers. These non-Han peoples were ancestors of the Turks, Mongols, and Tibetans. Many had, to some extent, been "sinicized" long before their ascent to power. In fact, some of them, notably the Qiang and the Xiongnu, had already been allowed to live in the frontier regions within the Great Wall since late Han times. During this period, warfare ravaged the north and prompted large-scale Han Chinese migration south to the Yangtze River Basin and Delta.
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+Northern and Southern dynasties (AD 420–589)
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+In the early 5th century China entered a period known as the Northern and Southern dynasties, in which parallel regimes ruled the northern and southern halves of the country. In the south, the Eastern Jin gave way to the Liu Song, Southern Qi, Liang and finally Chen. Each of these Southern dynasties were led by Han Chinese ruling families and used Jiankang (modern Nanjing) as the capital. They held off attacks from the north and preserved many aspects of Chinese civilization, while northern barbarian regimes began to sinify.
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+In the north the last of the Sixteen Kingdoms was extinguished in 439 by the Northern Wei, a kingdom founded by the Xianbei, a nomadic people who unified northern China. The Northern Wei eventually split into the Eastern and Western Wei, which then became the Northern Qi and Northern Zhou. These regimes were dominated by Xianbei or Han Chinese who had married into Xianbei families. During this period most Xianbei people adopted Han surnames, eventually leading to complete assimilation into the Han.
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+Despite the division of the country, Buddhism spread throughout the land. In southern China, fierce debates about whether Buddhism should be allowed were held frequently by the royal court and nobles. By the end of the era, Buddhists and Taoists had become much more tolerant of each other.
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+Mid-imperial China
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+Sui dynasty (581–618)
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+The short-lived Sui dynasty was a pivotal period in Chinese history. Founded by Emperor Wen in 581 in succession of the Northern Zhou, the Sui went on to conquer the Southern Chen in 589 to reunify China, ending three centuries of political division. The Sui pioneered many new institutions, including the government system of Three Departments and Six Ministries, imperial examinations for selecting officials from commoners, while improved on the systems of fubing system of the army conscription and the equal-field system of land distributions. These policies, which were adopted by later dynasties, brought enormous population growth, and amassed excessive wealth to the state. Standardized coinage was enforced throughout the unified empire. Buddhism took root as a prominent religion and was supported officially. Sui China was known for its numerous mega-construction projects. Intended for grains shipment and transporting troops, the Grand Canal was constructed, linking the capitals Daxing (Chang'an) and Luoyang to the wealthy southeast region, and in another route, to the northeast border. The Great Wall was also expanded, while series of military conquests and diplomatic maneuvers further pacified its borders. However, the massive invasions of the Korean Peninsula during the Goguryeo–Sui War failed disastrously, triggering widespread revolts that led to the fall of the dynasty.
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+Tang dynasty (618–907)
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+The Tang dynasty was a golden age of Chinese civilization, a prosperous, stable, and creative period with significant developments in culture, art, literature, particularly poetry, and technology. Buddhism became the predominant religion for the common people. Chang'an (modern Xi'an), the national capital, was the largest city in the world during its time.
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+The first emperor, Emperor Gaozu, came to the throne on 18 June 618, placed there by his son, Li Shimin, who became the second emperor, Taizong, one of the greatest emperors in Chinese history. Combined military conquests and diplomatic maneuvers reduced threats from Central Asian tribes, extended the border, and brought neighboring states into a tributary system. Military victories in the Tarim Basin kept the Silk Road open, connecting Chang'an to Central Asia and areas far to the west. In the south, lucrative maritime trade routes from port cities such as Guangzhou connected with distant countries, and foreign merchants settled in China, encouraging a cosmopolitan culture. The Tang culture and social systems were observed and adapted by neighboring countries, most notably Japan. Internally the Grand Canal linked the political heartland in Chang'an to the agricultural and economic centers in the eastern and southern parts of the empire. Xuanzang, a Chinese Buddhist monk, scholar, traveller, and translator travelled to India on his own and returned with "over six hundred Mahayana and Hinayana texts, seven statues of the Buddha and more than a hundred sarira relics."
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+The prosperity of the early Tang dynasty was abetted by a centralized bureaucracy. The government was organized as "Three Departments and Six Ministries" to separately draft, review, and implement policies. These departments were run by royal family members and landed aristocrats, but as the dynasty wore on, were joined or replaced by scholar officials selected by imperial examinations, setting patterns for later dynasties.
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+Under the Tang "equal-field system" all land was owned by the Emperor and granted to each family according to household size. Men granted land were conscripted for military service for a fixed period each year, a military policy known as the fubing system. These policies stimulated a rapid growth in productivity and a significant army without much burden on the state treasury. By the dynasty's midpoint, however, standing armies had replaced conscription, and land was continuously falling into the hands of private owners and religious institutions granted exemptions.
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+The dynasty continued to flourish under the rule of Empress Wu Zetian, the only official empress regnant in Chinese history, and reached its zenith during the long reign of Emperor Xuanzong, who oversaw an empire that stretched from the Pacific to the Aral Sea with at least  people. There were vibrant artistic and cultural creations, including works of the greatest Chinese poets, Li Bai and Du Fu.
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+At the zenith of prosperity of the empire, the An Lushan Rebellion from 755 to 763 was a watershed event. War, disease, and economic disruption devastated the population and drastically weakened the central imperial government. Upon suppression of the rebellion, regional military governors, known as jiedushi, gained increasingly autonomous status. With loss of revenue from land tax, the central imperial government came to rely heavily on salt monopoly. Externally, former submissive states raided the empire and the vast border territories were lost for centuries. Nevertheless, civil society recovered and thrived amidst the weakened imperial bureaucracy.
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+In late Tang period the empire was worn out by recurring revolts of the regional military governors, while scholar-officials engaged in fierce factional strife and corrupted eunuchs amassed immense power. Catastrophically, the Huang Chao Rebellion, from 874 to 884, devastated the entire empire for a decade. The sack of the southern port Guangzhou in 879 was followed by the massacre of most of its inhabitants, especially the large foreign merchant enclaves. By 881, both capitals, Luoyang and Chang'an, fell successively. The reliance on ethnic Han and Turkic warlords in suppressing the rebellion increased their power and influence. Consequently, the fall of the dynasty following Zhu Wen's usurpation led to an era of division.
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+Five Dynasties and Ten Kingdoms (907–960)
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+The period of political disunity between the Tang and the Song, known as the Five Dynasties and Ten Kingdoms period, lasted from 907 to 960. During this half-century, China was in all respects a multi-state system. Five regimes, namely, (Later) Liang, Tang, Jin, Han and Zhou, rapidly succeeded one another in control of the traditional Imperial heartland in northern China. Among the regimes, rulers of (Later) Tang, Jin and Han were sinicized Shatuo Turks, which ruled over the ethnic majority of Han Chinese. More stable and smaller regimes of mostly ethnic Han rulers coexisted in south and western China over the period, cumulatively constituted the "Ten Kingdoms".
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+Amidst political chaos in the north, the strategic Sixteen Prefectures (region along today's Great Wall) were ceded to the emerging Khitan Liao dynasty, which drastically weakened the defense of China proper against northern nomadic empires. To the south, Vietnam gained lasting independence after being a Chinese prefecture for many centuries. With wars dominating in Northern China, there were mass southward migrations of population, which further enhanced the southward shift of cultural and economic centers in China. The era ended with the coup of Later Zhou general Zhao Kuangyin, and the establishment of the Song dynasty in 960, which eventually annihilated the remains of the "Ten Kingdoms" and reunified China.
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+Late imperial China
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+Song, Liao, Jin, and Western Xia dynasties (960–1279)
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+In 960, the Song dynasty was founded by Emperor Taizu, with its capital established in Kaifeng (then known as Bianjing). In 979, the Song dynasty reunified most of China proper, while large swaths of the outer territories were occupied by sinicized nomadic empires. The Khitan Liao dynasty, which lasted from 907 to 1125, ruled over Manchuria, Mongolia, and parts of Northern China. Meanwhile, in what are now the north-western Chinese provinces of Gansu, Shaanxi, and Ningxia, the Tangut tribes founded the Western Xia dynasty from 1032 to 1227.
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+Aiming to recover the strategic sixteen prefectures lost in the previous dynasty, campaigns were launched against the Liao dynasty in the early Song period, which all ended in failure. Then in 1004, the Liao cavalry swept over the exposed North China Plain and reached the outskirts of Kaifeng, forcing the Song's submission and then agreement to the Chanyuan Treaty, which imposed heavy annual tributes from the Song treasury. The treaty was a significant reversal of Chinese dominance of the traditional tributary system. Yet the annual outflow of Song's silver to the Liao was paid back through the purchase of Chinese goods and products, which expanded the Song economy, and replenished its treasury. This dampened the incentive for the Song to further campaign against the Liao. Meanwhile, this cross-border trade and contact induced further sinicization within the Liao Empire, at the expense of its military might which was derived from its nomadic lifestyle. Similar treaties and social-economical consequences occurred in Song's relations with the Jin dynasty.
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+Within the Liao Empire the Jurchen tribes revolted against their overlords to establish the Jin dynasty in 1115. In 1125, the devastating Jin cataphract annihilated the Liao dynasty, while remnants of Liao court members fled to Central Asia to found the Qara Khitai Empire (Western Liao dynasty). Jin's invasion of the Song dynasty followed swiftly. In 1127, Kaifeng was sacked, a massive catastrophe known as the Jingkang Incident, ending the Northern Song dynasty. Later the entire north of China was conquered. The survived members of Song court regrouped in the new capital city of Hangzhou, and initiated the Southern Song dynasty, which ruled territories south of the Huai River. In the ensuing years, the territory and population of China were divided between the Song dynasty, the Jin dynasty and the Western Xia dynasty. The era ended with the Mongol conquest, as Western Xia fell in 1227, the Jin dynasty in 1234, and finally the Southern Song dynasty in 1279.
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+Despite its military weakness, the Song dynasty is widely considered to be the high point of classical Chinese civilization. The Song economy, facilitated by technology advancement, had reached a level of sophistication probably unseen in world history before its time. The population soared to over  and the living standards of common people improved tremendously due to improvements in rice cultivation and the wide availability of coal for production. The capital cities of Kaifeng and subsequently Hangzhou were both the most populous cities in the world for their time, and encouraged vibrant civil societies unmatched by previous Chinese dynasties. Although land trading routes to the far west were blocked by nomadic empires, there was extensive maritime trade with neighboring states, which facilitated the use of Song coinage as the de facto currency of exchange. Giant wooden vessels equipped with compasses traveled throughout the China Seas and northern Indian Ocean. The concept of insurance was practised by merchants to hedge the risks of such long-haul maritime shipments. With prosperous economic activities, the historically first use of paper currency emerged in the western city of Chengdu, as a supplement to the existing copper coins.
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+The Song dynasty was considered to be the golden age of great advancements in science and technology of China, thanks to innovative scholar-officials such as Su Song (1020–1101) and Shen Kuo (1031–1095). Inventions such as the hydro-mechanical astronomical clock, the first continuous and endless power-transmitting chain, woodblock printing and paper money were all invented during the Song dynasty.
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+There was court intrigue between the political reformers and conservatives, led by the chancellors Wang Anshi and Sima Guang, respectively. By the mid-to-late 13th century, the Chinese had adopted the dogma of Neo-Confucian philosophy formulated by Zhu Xi. Enormous literary works were compiled during the Song dynasty, such as the innovative historical narrative Zizhi Tongjian ("Comprehensive Mirror to Aid in Government"). The invention of movable-type printing further facilitated the spread of knowledge. Culture and the arts flourished, with grandiose artworks such as Along the River During the Qingming Festival and Eighteen Songs of a Nomad Flute, along with great Buddhist painters such as the prolific Lin Tinggui.
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+The Song dynasty was also a period of major innovation in the history of warfare. Gunpowder, while invented in the Tang dynasty, was first put into use in battlefields by the Song army, inspiring a succession of new firearms and siege engines designs. During the Southern Song dynasty, as its survival hinged decisively on guarding the Yangtze and Huai River against the cavalry forces from the north, the first standing navy in China was assembled in 1132, with its admiral's headquarters established at Dinghai. Paddle-wheel warships equipped with trebuchets could launch incendiary bombs made of gunpowder and lime, as recorded in Song's victory over the invading Jin forces at the Battle of Tangdao in the East China Sea, and the Battle of Caishi on the Yangtze River in 1161.
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+The advances in civilization during the Song dynasty came to an abrupt end following the devastating Mongol conquest, during which the population sharply dwindled, with a marked contraction in economy. Despite viciously halting Mongol advance for more than three decades, the Southern Song capital Hangzhou fell in 1276, followed by the final annihilation of the Song standing navy at the Battle of Yamen in 1279.
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+Yuan dynasty (1271–1368)
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+The Yuan dynasty was formally proclaimed in 1271, when the Great Khan of Mongol, Kublai Khan, one of the grandsons of Genghis Khan, assumed the additional title of Emperor of China, and considered his inherited part of the Mongol Empire as a Chinese dynasty. In the preceding decades, the Mongols had conquered the Jin dynasty in Northern China, and the Southern Song dynasty fell in 1279 after a protracted and bloody war. The Mongol Yuan dynasty became the first conquest dynasty in Chinese history to rule the entire China proper and its population as an ethnic minority. The dynasty also directly controlled the Mongol heartland and other regions, inheriting the largest share of territory of the eastern Mongol empire, which roughly coincided with the modern area of China and nearby regions in East Asia. Further expansion of the empire was halted after defeats in the invasions of Japan and Vietnam. Following the previous Jin dynasty, the capital of Yuan dynasty was established at Khanbaliq (also known as Dadu, modern-day Beijing). The Grand Canal was reconstructed to connect the remote capital city to economic hubs in southern part of China, setting the precedence and foundation where Beijing would largely remain as the capital of the successive regimes that unified China mainland.
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+A series of Mongol civil wars in the late 13th century led to the division of the Mongol Empire. In 1304 the emperors of the Yuan dynasty were upheld as the nominal Khagan over western khanates (the Chagatai Khanate, the Golden Horde and the Ilkhanate), which nonetheless remained de facto autonomous. The era was known as Pax Mongolica, when much of the Asian continent was ruled by the Mongols. For the first and only time in history, the Silk Road was controlled entirely by a single state, facilitating the flow of people, trade, and cultural exchange. A network of roads and a postal system were established to connect the vast empire. Lucrative maritime trade, developed from the previous Song dynasty, continued to flourish, with Quanzhou and Hangzhou emerging as the largest ports in the world. Adventurous travelers from the far west, most notably the Venetian, Marco Polo, would settle in China for decades. Upon his return, his detail travel record inspired generations of medieval Europeans with the splendors of the far East. The Yuan dynasty was the first ancient economy, where paper currency, known at the time as Jiaochao, was used as the predominant medium of exchange. Its unrestricted issuance in the late Yuan dynasty inflicted hyperinflation, which eventually brought the downfall of the dynasty.
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+While the Mongol rulers of the Yuan dynasty adopted substantially to Chinese culture, their sinicization was of lesser extent compared to earlier conquest dynasties in Chinese history. For preserving racial superiority as the conqueror and ruling class, traditional nomadic customs and heritage from the Mongolian Steppe were held in high regard. On the other hand, the Mongol rulers also adopted flexibly to a variety of cultures from many advanced civilizations within the vast empire. Traditional social structure and culture in China underwent immense transform during the Mongol dominance. Large groups of foreign migrants settled in China, who enjoyed elevated social status over the majority Han Chinese, while enriching Chinese culture with foreign elements. The class of scholar officials and intellectuals, traditional bearers of elite Chinese culture, lost substantial social status. This stimulated the development of culture of the common folks. There were prolific works in zaju variety shows and literary songs (sanqu), which were written in a distinctive poetry style known as qu. Novels of vernacular style gained unprecedented status and popularity.
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+Before the Mongol invasion, Chinese dynasties reported approximately  inhabitants; after the conquest had been completed in 1279, the 1300 census reported roughly  people. This major decline is not necessarily due only to Mongol killings. Scholars such as Frederick W. Mote argue that the wide drop in numbers reflects an administrative failure to record rather than an actual decrease; others such as Timothy Brook argue that the Mongols created a system of enserfment among a huge portion of the Chinese populace, causing many to disappear from the census altogether; other historians including William McNeill and David Morgan consider that plague was the main factor behind the demographic decline during this period. In the 14th century China suffered additional depredations from epidemics of plague, estimated to have killed around a quarter of the population of China.
+
+Throughout the Yuan dynasty, there was some general sentiment among the populace against the Mongol dominance. Yet rather than the nationalist cause, it was mainly strings of natural disasters and incompetent governance that triggered widespread peasant uprisings since the 1340s. After the massive naval engagement at Lake Poyang, Zhu Yuanzhang prevailed over other rebel forces in the south. He proclaimed himself emperor and founded the Ming dynasty in 1368. The same year his northern expedition army captured the capital Khanbaliq. The Yuan remnants fled back to Mongolia and sustained the regime. Other Mongol Khanates in Central Asia continued to exist after the fall of Yuan dynasty in China.
+
+Ming dynasty (1368–1644)
+
+The Ming dynasty was founded by Zhu Yuanzhang in 1368, who proclaimed himself as the Hongwu Emperor. The capital was initially set at Nanjing, and was later moved to Beijing from Yongle Emperor's reign onward.
+
+Urbanization increased as the population grew and as the division of labor grew more complex. Large urban centers, such as Nanjing and Beijing, also contributed to the growth of private industry. In particular, small-scale industries grew up, often specializing in paper, silk, cotton, and porcelain goods. For the most part, however, relatively small urban centers with markets proliferated around the country. Town markets mainly traded food, with some necessary manufactures such as pins or oil.
+
+Despite the xenophobia and intellectual introspection characteristic of the increasingly popular new school of neo-Confucianism, China under the early Ming dynasty was not isolated. Foreign trade and other contacts with the outside world, particularly Japan, increased considerably. Chinese merchants explored all of the Indian Ocean, reaching East Africa with the voyages of Zheng He.
+
+The Hongwu Emperor, being the only founder of a Chinese dynasty who was also of peasant origin, had laid the foundation of a state that relied fundamentally in agriculture. Commerce and trade, which flourished in the previous Song and Yuan dynasties, were less emphasized. Neo-feudal landholdings of the Song and Mongol periods were expropriated by the Ming rulers. Land estates were confiscated by the government, fragmented, and rented out. Private slavery was forbidden. Consequently, after the death of the Yongle Emperor, independent peasant landholders predominated in Chinese agriculture. These laws might have paved the way to removing the worst of the poverty during the previous regimes. Towards later era of the Ming dynasty, with declining government control, commerce, trade and private industries revived.
+
+The dynasty had a strong and complex central government that unified and controlled the empire. The emperor's role became more autocratic, although Hongwu Emperor necessarily continued to use what he called the "Grand Secretariat" to assist with the immense paperwork of the bureaucracy, including memorials (petitions and recommendations to the throne), imperial edicts in reply, reports of various kinds, and tax records. It was this same bureaucracy that later prevented the Ming government from being able to adapt to changes in society, and eventually led to its decline.
+
+The Yongle Emperor strenuously tried to extend China's influence beyond its borders by demanding other rulers send ambassadors to China to present tribute. A large navy was built, including four-masted ships displacing 1,500 tons. A standing army of 1 million troops was created. The Chinese armies conquered and occupied Vietnam for around 20 years, while the Chinese fleet sailed the China seas and the Indian Ocean, cruising as far as the east coast of Africa. The Chinese gained influence in eastern Moghulistan. Several maritime Asian nations sent envoys with tribute for the Chinese emperor. Domestically, the Grand Canal was expanded and became a stimulus to domestic trade. Over 100,000 tons of iron per year were produced. Many books were printed using movable type. The imperial palace in Beijing's Forbidden City reached its current splendor. It was also during these centuries that the potential of south China came to be fully exploited. New crops were widely cultivated and industries such as those producing porcelain and textiles flourished.
+
+In 1449 Esen Tayisi led an Oirat Mongol invasion of northern China which culminated in the capture of the Zhengtong Emperor at Tumu. Since then, the Ming became on the defensive on the northern frontier, which led to the Ming Great Wall being built. Most of what remains of the Great Wall of China today was either built or repaired by the Ming. The brick and granite work was enlarged, the watchtowers were redesigned, and cannons were placed along its length.
+
+At sea the Ming became increasingly isolationist after the death of the Yongle Emperor. The treasure voyages which sailed the Indian Ocean were discontinued, and the maritime prohibition laws were set in place banning the Chinese from sailing abroad. European traders who reached China in the midst of the Age of Discovery were repeatedly rebuked in their requests for trade, with the Portuguese being repulsed by the Ming navy at Tuen Mun in 1521 and again in 1522. Domestic and foreign demands for overseas trade, deemed illegal by the state, led to widespread wokou piracy attacking the southeastern coastline during the rule of the Jiajing Emperor (1507–1567), which only subsided after the opening of ports in Guangdong and Fujian and much military suppression. In addition to raids from Japan by the wokou, raids from Taiwan and the Philippines by the Pisheye also ravaged the southern coasts.  The Portuguese were allowed to settle in Macau in 1557 for trade, which remained in Portuguese hands until 1999. After the Spanish invasion of the Philippines, trade with the Spanish at Manila imported large quantities of Mexican and Peruvian silver from the Spanish Americas to China. The Dutch entry into the Chinese seas was also met with fierce resistance, with the Dutch being chased off the Penghu islands in the Sino-Dutch conflicts of 1622–1624 and were forced to settle in Taiwan instead. The Dutch in Taiwan fought with the Ming in the Battle of Liaoluo Bay in 1633 and lost, and eventually surrendered to the Ming loyalist Koxinga in 1662, after the fall of the Ming dynasty.
+
+In 1556, during the rule of the Jiajing Emperor, the Shaanxi earthquake killed about 830,000 people, the deadliest earthquake of all time.
+
+The Ming dynasty intervened deeply in the Japanese invasions of Korea (1592–98), which ended with the withdrawal of all invading Japanese forces in Korea, and the restoration of the Joseon dynasty, its traditional ally and tributary state. The regional hegemony of the Ming dynasty was preserved at a toll on its resources. Coincidentally, with Ming's control in Manchuria in decline, the Manchu (Jurchen) tribes, under their chieftain Nurhaci, broke away from Ming's rule, and emerged as a powerful, unified state, which was later proclaimed as the Qing dynasty. It went on to subdue the much weakened Korea as its tributary, conquered Mongolia, and expanded its territory to the outskirt of the Great Wall. The most elite army of the Ming dynasty was to station at the Shanhai Pass to guard the last stronghold against the Manchus, which weakened its suppression of internal peasants uprisings.
+
+Qing dynasty (1636–1912)
+
+The Qing dynasty (1644–1912) was the last imperial dynasty in China. Founded by the Manchus, it was the second conquest dynasty to rule the entirety of China proper, and roughly doubled the territory controlled by the Ming. The Manchus were formerly known as Jurchens, residing in the northeastern part of the Ming territory outside the Great Wall. They emerged as the major threat to the late Ming dynasty after Nurhaci united all Jurchen tribes and his son, Hong Taiji, declared the founding of the Qing dynasty in 1636. The Qing dynasty set up the Eight Banners system that provided the basic framework for the Qing military conquest. Li Zicheng's peasant rebellion captured Beijing in 1644 and the Chongzhen Emperor, the last Ming emperor, committed suicide. The Manchus allied with the Ming general Wu Sangui to seize Beijing, which was made the capital of the Qing dynasty, and then proceeded to subdue the Ming remnants in the south. During the Ming-Qing transition, when the Ming dynasty and later the Southern Ming, the emerging Qing dynasty, and several other factions like the Shun dynasty and Xi dynasty founded by peasant revolt leaders fought against each another, which, along with innumerable natural disasters at that time such as those caused by the Little Ice Age and epidemics like the Great Plague during the last decade of the Ming dynasty, caused enormous loss of lives and significant harm to the economy. In total, these decades saw the loss of as many as  lives, but the Qing appeared to have restored China's imperial power and inaugurate another flowering of the arts. The early Manchu emperors combined traditions of Inner Asian rule with Confucian norms of traditional Chinese government and were considered a Chinese dynasty.
+
+The Manchus enforced a 'queue order', forcing Han Chinese men to adopt the Manchu queue hairstyle. Officials were required to wear Manchu-style clothing Changshan (bannermen dress and Tangzhuang), but ordinary Han civilians were allowed to wear traditional Han clothing. Bannermen could not undertake trade or manual labor; they had to petition to be removed from banner status. They were considered aristocracy and were given annual pensions, land, and allotments of cloth. The Kangxi Emperor ordered the creation of the Kangxi Dictionary, the most complete dictionary of Chinese characters that had been compiled.
+
+Over the next half-century, all areas previously under the Ming dynasty were consolidated under the Qing. Conquests in Central Asia in the eighteenth century extended territorial control. Between 1673 and 1681, the Kangxi Emperor suppressed the Revolt of the Three Feudatories, an uprising of three generals in Southern China who had been denied hereditary rule of large fiefdoms granted by the previous emperor. In 1683, the Qing staged an amphibious assault on southern Taiwan, bringing down the rebel Kingdom of Tungning, which was founded by the Ming loyalist Koxinga (Zheng Chenggong) in 1662 after the fall of the Southern Ming, and had served as a base for continued Ming resistance in Southern China. The Qing defeated the Russians at Albazin, resulting in the Treaty of Nerchinsk.
+
+By the end of Qianlong Emperor's long reign in 1796, the Qing Empire was at its zenith. The Qing ruled more than one-third of the world's population, and had the largest economy in the world. By area it was one of the largest empires ever.
+
+In the 19th century the empire was internally restive and externally threatened by western powers. The defeat by the British Empire in the First Opium War (1840) led to the Treaty of Nanking (1842), under which Hong Kong was ceded to Britain and importation of opium (produced by British Empire territories) was allowed. Opium usage continued to grow in China, adversely affecting societal stability. Subsequent military defeats and unequal treaties with other western powers continued even after the fall of the Qing dynasty.
+
+Internally the Taiping Rebellion (1851–1864), a Christian religious movement led by the "Heavenly King" Hong Xiuquan swept from the south to establish the Taiping Heavenly Kingdom and controlled roughly a third of China proper for over a decade. The court in desperation empowered Han Chinese officials such as Zeng Guofan to raise local armies. After initial defeats, Zeng crushed the rebels in the Third Battle of Nanking in 1864. This was one of the largest wars in the 19th century in troop involvement; there was massive loss of life, with a death toll of about 20 million. A string of civil disturbances followed, including the Punti–Hakka Clan Wars, Nian Rebellion, Dungan Revolt, and Panthay Rebellion. All rebellions were ultimately put down, but at enormous cost and with millions dead, seriously weakening the central imperial authority. China never rebuilt a strong central army, and many local officials used their military power to effectively rule independently in their provinces.
+
+Yet the dynasty appeared to recover in the Tongzhi Restoration (1860–1872), led by Manchu royal family reformers and Han Chinese officials such as Zeng Guofan and his proteges Li Hongzhang and Zuo Zongtang. Their Self-Strengthening Movement made effective institutional reforms, imported Western factories and communications technology, with prime emphasis on strengthening the military. However, the reform was undermined by official rivalries, cynicism, and quarrels within the imperial family. The defeat of Yuan Shikai's modernized "Beiyang Fleet" in the First Sino-Japanese War (1894–1895) led to the formation of the New Army. The Guangxu Emperor, advised by Kang Youwei, then launched a comprehensive reform effort, the Hundred Days' Reform (1898). Empress Dowager Cixi, however, feared that precipitous change would lead to bureaucratic opposition and foreign intervention and quickly suppressed it.
+
+In the summer of 1900, the Boxer Uprising opposed foreign influence and murdered Chinese Christians and foreign missionaries. When Boxers entered Beijing, the Qing government ordered all foreigners to leave, but they and many Chinese Christians were besieged in the foreign legations quarter. An Eight-Nation Alliance sent the Seymour Expedition of Japanese, Russian, British, Italian, German, French, American, and Austrian troops to relieve the siege, but they were forced to retreat by Boxer and Qing troops at the Battle of Langfang. After the Alliance's attack on the Dagu Forts, the court declared war on the Alliance and authorized the Boxers to join with imperial armies. After fierce fighting at Tientsin, the Alliance formed the second, much larger Gaselee Expedition and finally reached Beijing; the Empress Dowager evacuated to Xi'an. The Boxer Protocol ended the war, exacting a tremendous indemnity.
+
+The Qing court then instituted "New Policies" of administrative and legal reform, including abolition of the examination system. But young officials, military officers, and students debated reform, perhaps a constitutional monarchy, or the overthrow of the dynasty and the creation of a republic. They were inspired by an emerging public opinion formed by intellectuals such as Liang Qichao and the revolutionary ideas of Sun Yat-sen. A localised military uprising, the Wuchang uprising, began on 10 October 1911, in Wuchang (today part of Wuhan), and soon spread. The Republic of China was proclaimed on 1 January 1912, ending 2,000 years of dynastic rule.
+
+Modern China
+
+Republic of China (since 1912)
+
+The provisional government of the Republic of China was formed in Nanking on 12 March 1912. Sun Yat-sen became President of the Republic of China, but he turned power over to Yuan Shikai, who commanded the New Army. Over the next few years, Yuan proceeded to abolish the national and provincial assemblies and declared himself as the emperor of Empire of China in late 1915. Yuan's imperial ambitions were fiercely opposed by his subordinates; faced with the prospect of rebellion, he abdicated in March 1916 and died of natural causes in June.
+
+Yuan's death in 1916 left a power vacuum; the republican government was all but shattered. This opened the way for the Warlord Era, during which much of China was ruled by shifting coalitions of competing provincial military leaders and the Beiyang government. Intellectuals, disappointed in the failure of the Republic, launched the New Culture Movement.
+
+In 1919, the May Fourth Movement began as a response to the pro-Japanese terms imposed on China by the Treaty of Versailles following World War I. It quickly became a nationwide protest movement. The protests were a moral success as the cabinet fell and China refused to sign the Treaty of Versailles, which had awarded German holdings of Shandong to Japan. Memory of the mistreatment at Versailles fuels resentment into the 21st century.
+
+Political and intellectual ferment waxed strong throughout the 1920s and 1930s. According to Patricia Ebrey:
+"Nationalism, patriotism, progress, science, democracy, and freedom were the goals; imperialism, feudalism, warlordism, autocracy, patriarchy, and blind adherence to tradition were the enemies. Intellectuals struggled with how to be strong and modern and yet Chinese, how to preserve China as a political entity in the world of competing nations."
+
+In the 1920s Sun Yat-sen established a revolutionary base in Guangzhou and set out to unite the fragmented nation. He welcomed assistance from the Soviet Union (itself fresh from Lenin's Communist takeover) and he entered into an alliance with the fledgling Chinese Communist Party (CCP). After Sun's death from cancer in 1925, one of his protégés, Chiang Kai-shek, seized control of the Nationalist Party (KMT) and succeeded in bringing most of south and central China under its rule in the Northern Expedition (1926–1927). Having defeated the warlords in the south and central China by military force, Chiang was able to secure the nominal allegiance of the warlords in the North and establish the Nationalist government in Nanking. In 1927, Chiang turned on the CCP and relentlessly purged the Communists elements in his NRA. In 1934, driven from their mountain bases such as the Chinese Soviet Republic, the CCP forces embarked on the Long March across China's most desolate terrain to the northwest, where they established a guerrilla base at Yan'an in Shaanxi. During the Long March, the communists reorganized under a new leader, Mao Zedong (Mao Tse-tung).
+
+The bitter Chinese Civil War between the Nationalists and the Communists continued, openly or clandestinely, through the 14-year-long Japanese occupation of various parts of the country (1931–1945). The two Chinese parties nominally formed a United Front to oppose the Japanese in 1937, during the Second Sino-Japanese War (1937–1945), which became a part of World War II. Japanese forces committed numerous war atrocities against the civilian population, including biological warfare (see Unit 731) and the Three Alls Policy (Sankō Sakusen), the three alls being: "Kill All, Burn All and Loot All". During the war, China was recognized as one of the Allied "Big Four" in the Declaration by United Nations. China was one of the four major Allies of World War II, and was later considered one of the primary victors in the war.
+
+Following the defeat of Japan in 1945, the war between the Nationalist government forces and the CCP resumed, after failed attempts at reconciliation and a negotiated settlement. By 1949, the CCP had established control over most of the country. Odd Arne Westad says the Communists won the Civil War because they made fewer military mistakes than Chiang, and because in his search for a powerful centralized government, Chiang antagonized too many interest groups in China. Furthermore, his party was weakened in the war against the Japanese. Meanwhile, the Communists told different groups, such as peasants, exactly what they wanted to hear, and cloaked themselves in the cover of Chinese Nationalism. During the civil war both the Nationalists and Communists carried out mass atrocities, with millions of non-combatants killed by both sides. These included deaths from forced conscription and massacres. When the Nationalist government forces were defeated by CCP forces in mainland China in 1949, the Nationalist government retreated to Taiwan with its forces, along with Chiang and a large number of their supporters; the Nationalist government had taken effective control of Taiwan at the end of WWII as part of the overall Japanese surrender, when Japanese troops in Taiwan surrendered to the Republic of China troops.
+
+Until the early 1970s the ROC was recognized as the sole legitimate government of China by the United Nations, the United States and most Western nations, refusing to recognize the PRC on account of the Cold War. This changed in 1971 when the PRC was seated in the United Nations, replacing the ROC. The KMT ruled Taiwan under martial law until 1987, with the stated goal of being vigilant against Communist infiltration and preparing to retake mainland China. Therefore, political dissent was not tolerated during that period.
+
+In the 1990s the ROC underwent a major democratic reform, beginning with the 1991 resignation of the members of the Legislative Yuan and National Assembly elected in 1947. These groups were originally created to represent mainland China constituencies. Also lifted were the restrictions on the use of Taiwanese languages in the broadcast media and in schools. This culminated with the first direct presidential election in 1996 against the Democratic Progressive Party (DPP) candidate and former dissident, Peng Ming-min. In 2000, the KMT status as the ruling party ended when the DPP took power, only to regain its status in the 2008 election by Ma Ying-jeou.
+
+Due to the controversial nature of Taiwan's political status, the ROC is currently recognized by 12 UN member states and Holy See as of  as the legitimate government of "China".
+
+People's Republic of China (since 1949)
+
+Major combat in the Chinese Civil War ended in 1949 with the KMT pulling out of the mainland, with the government relocating to Taipei and maintaining control only over a few islands. The CCP was left in control of mainland China. On 1 October 1949, Mao Zedong proclaimed the People's Republic of China. "Communist China" and "Red China" were two common names for the PRC.
+
+The PRC was shaped by a series of campaigns and five-year plans. The economic and social plan known as the Great Leap Forward caused an estimated 45 million deaths. Mao's government carried out mass executions of landowners, instituted collectivisation and implemented the Laogai camp system. Execution, deaths from forced labor and other atrocities resulted in millions of deaths under Mao. In 1966 Mao and his allies launched the Cultural Revolution, which continued until Mao's death a decade later. The Cultural Revolution, motivated by power struggles within the Party and a fear of the Soviet Union, led to a major upheaval in Chinese society.
+
+In 1972, at the peak of the Sino-Soviet split, Mao and Zhou Enlai met U.S. president Richard Nixon in Beijing to establish relations with the US. In the same year, the PRC was admitted to the United Nations in place of the Republic of China, with permanent membership of the Security Council.
+
+A power struggle followed Mao's death in 1976. The Gang of Four were arrested and blamed for the excesses of the Cultural Revolution, marking the end of a turbulent political era in China. Deng Xiaoping outmaneuvered Mao's anointed successor chairman Hua Guofeng, and gradually emerged as the de facto leader over the next few years.
+
+Deng Xiaoping was the Paramount Leader of China from 1978 to 1992, although he never became the head of the party or state, and his influence within the Party led the country to significant economic reforms. The CCP subsequently loosened governmental control over citizens' personal lives and the communes were disbanded with many peasants receiving multiple land leases, which greatly increased incentives and agricultural production. In addition, there were many free market areas opened. The most successful free market area was Shenzhen. It is located in Guangdong and the property tax free area still exists today. This turn of events marked China's transition from a planned economy to a mixed economy with an increasingly open market environment, a system termed by some as "market socialism", and officially by the CCP as "Socialism with Chinese characteristics". The PRC adopted its current constitution on 4 December 1982.
+
+In 1989 the death of former general secretary Hu Yaobang helped to spark the Tiananmen Square protests of that year, during which students and others campaigned for several months, speaking out against corruption and in favour of greater political reform, including democratic rights and freedom of speech. However, they were eventually put down on 4 June when Army troops and vehicles entered and forcibly cleared the square, with considerable numbers of fatalities. This event was widely reported, and brought worldwide condemnation and sanctions against the government.
+
+CCP general secretary and PRC president Jiang Zemin and PRC premier Zhu Rongji, both former mayors of Shanghai, led post-Tiananmen PRC in the 1990s. Under Jiang and Zhu's ten years of administration, the PRC's economic performance pulled an estimated 150 million peasants out of poverty and sustained an average annual gross domestic product growth rate of 11.2%. The country formally joined the World Trade Organization in 2001. By 1997 and 1999, former European colonies of British Hong Kong and Portuguese Macau became the Hong Kong and Macau special administrative regions of the People's Republic of China respectively.
+
+Although the PRC needed economic growth to spur its development, the government began to worry that rapid economic growth was degrading the country's resources and environment. Another concern is that certain sectors of society are not sufficiently benefiting from the PRC's economic development; one example of this is the wide gap between urban and rural areas. As a result, under former CCP general secretary and President Hu Jintao and Premier Wen Jiabao, the PRC initiated policies to address issues of equitable distribution of resources, but the outcome was not known . More than 40 million farmers were displaced from their land, usually for economic development, contributing to 87,000 demonstrations and riots across China in 2005. For much of the PRC's population, living standards improved very substantially and freedom increased, but political controls remained tight and rural areas poor.
+
+According to the U.S. Department of Defense, as many as 3 million Uyghurs and members of other Muslim minority groups are being held in China's internment camps which are located in the Xinjiang region and which American news reports often label as "concentration camps". The camps were established in late 2010s under Xi Jinping's administration. Human Rights Watch says that they have been used to indoctrinate Uyghurs and other Muslims since 2017 as part of a "people's war on terror", a policy announced in 2014. The camps have been criticized by the governments of many countries and human rights organizations for alleged human rights abuses, including mistreatment, rape, and torture, with some of them alleging genocide.
+
+The novel coronavirus SARS-CoV-2, which causes the disease COVID-19, was first detected in Wuhan, Hubei in 2019 and led to a global pandemic.
+
+See also 
+
+ Chinese emperors family tree
+ Ancient – Early – Middle – Late
+ Chinese exploration
+ Chinese historiography
+ Christianity in China
+ Economic history of China
+ Ethnic groups in Chinese history
+ Foreign relations of imperial China
+ Golden ages of China
+ History of canals in China
+ History of Islam in China
+ History of science and technology in China
+ History of Taiwan
+ History of the Great Wall of China
+ List of Chinese monarchs
+ List of rebellions in China
+ List of recipients of tribute from China
+ List of tributary states of China
+ Military history of China before 1912
+ Naval history of China
+ Population history of China
+ Timeline of Chinese history
+ Women in ancient and imperial China
+
+References
+
+Notes
+
+Citations
+
+Sources
+
+Further reading 
+
+ 
+ Fairbank, John King and Goldman, Merle. China: A New History. 2nd ed. (Harvard UP, 2006). 640 pp.
+ Gernet, Jacques. A History of Chinese Civilization (1996). One-volume survey.
+ Li, Xiaobing, ed. China at War: An Encyclopedia. (ABC-CLIO, 2012).
+ Mote, Frederick W. Imperial China, 900–1800 (Harvard UP, 1999), 1,136 pp. Authoritative treatment of the Song, Yuan, Ming, and early Qing dynasties.
+ Perkins, Dorothy. Encyclopedia of China: The Essential Reference to China, Its History and Culture (Facts on File, 1999). 662 pp.
+ Roberts, J. A. G. A Concise History of China (Harvard U. Press, 1999). 341 pp.
+ Stanford, Edward. Atlas of the Chinese Empire, containing separate maps of the eighteen provinces of China (2nd ed., 1917). Legible color maps.
+ Wright, David Curtis. History of China (2001) 257 pp.
+
+External links 
+
+ China Knowledge, a comprehensive online encyclopedia of China from Ulrich Theobald
+ The Berkshire Encyclopedia of China on Oxford Reference 
+ China Rediscovers its Own History, a lengthy lecture on Chinese history given by Yu Ying-shih
+Civil engineering is a professional engineering discipline that deals with the design, construction, and maintenance of the physical and naturally built environment, including public works such as roads, bridges, canals, dams, airports, sewage systems, pipelines, structural components of buildings, and railways.
+
+Civil engineering is traditionally broken into a number of sub-disciplines. It is considered the second-oldest engineering discipline after military engineering, and it is defined to distinguish non-military engineering from military engineering. Civil engineering can take place in the public sector from municipal public works departments through to federal government agencies, and in the private sector from locally based firms to global Fortune 500 companies.
+
+History
+
+Civil engineering as a discipline 
+Civil engineering is the application of physical and scientific principles for solving the problems of society, and its history is intricately linked to advances in the understanding of physics and mathematics throughout history. Because civil engineering is a broad profession, including several specialized sub-disciplines, its history is linked to knowledge of structures, materials science, geography, geology, soils, hydrology, environmental science, mechanics, project management, and other fields.
+
+Throughout ancient and medieval history most architectural design and construction was carried out by artisans, such as stonemasons and carpenters, rising to the role of master builder. Knowledge was retained in guilds and seldom supplanted by advances. Structures, roads, and infrastructure that existed were repetitive, and increases in scale were incremental.
+
+One of the earliest examples of a scientific approach to physical and mathematical problems applicable to civil engineering is the work of Archimedes in the 3rd century BC, including Archimedes' principle, which underpins our understanding of buoyancy, and practical solutions such as Archimedes' screw. Brahmagupta, an Indian mathematician, used arithmetic in the 7th century AD, based on Hindu-Arabic numerals, for excavation (volume) computations.
+
+Civil engineering profession 
+
+Engineering has been an aspect of life since the beginnings of human existence. The earliest practice of civil engineering may have commenced between 4000 and 2000 BC in ancient Egypt, the Indus Valley civilization, and Mesopotamia (ancient Iraq) when humans started to abandon a nomadic existence, creating a need for the construction of shelter. During this time, transportation became increasingly important leading to the development of the wheel and sailing.
+
+Until modern times there was no clear distinction between civil engineering and architecture, and the term engineer and architect were mainly geographical variations referring to the same occupation, and often used interchangeably. The construction of pyramids in Egypt (–2500 BC) were some of the first instances of large structure constructions. Other ancient historic civil engineering constructions include the Qanat water management system in modern-day Iran (the oldest is older than 3000 years and longer than ,) the Parthenon by Iktinos in Ancient Greece (447–438 BC), the Appian Way by Roman engineers (), the Great Wall of China by General Meng T'ien under orders from Ch'in Emperor Shih Huang Ti () and the stupas constructed in ancient Sri Lanka like the Jetavanaramaya and the extensive irrigation works in Anuradhapura. The Romans developed civil structures throughout their empire, including especially aqueducts, insulae, harbors, bridges, dams and roads.
+
+In the 18th century, the term civil engineering was coined to incorporate all things civilian as opposed to military engineering. In 1747, the first institution for the teaching of civil engineering, the École Nationale des Ponts et Chaussées was established in France; and more examples followed in other European countries, like Spain. The first self-proclaimed civil engineer was John Smeaton, who constructed the Eddystone Lighthouse. In 1771 Smeaton and some of his colleagues formed the Smeatonian Society of Civil Engineers, a group of leaders of the profession who met informally over dinner. Though there was evidence of some technical meetings, it was little more than a social society.
+
+In 1818 the Institution of Civil Engineers was founded in London, and in 1820 the eminent engineer Thomas Telford became its first president. The institution received a Royal charter in 1828, formally recognising civil engineering as a profession. Its charter defined civil engineering as:
+
+Civil engineering education
+The first private college to teach civil engineering in the United States was Norwich University, founded in 1819 by Captain Alden Partridge. The first degree in civil engineering in the United States was awarded by Rensselaer Polytechnic Institute in 1835. The first such degree to be awarded to a woman was granted by Cornell University to Nora Stanton Blatch in 1905.
+
+In the UK during the early 19th century, the division between civil engineering and military engineering (served by the Royal Military Academy, Woolwich), coupled with the demands of the Industrial Revolution, spawned new engineering education initiatives: the Class of Civil Engineering and Mining was founded at King's College London in 1838, mainly as a response to the growth of the railway system and the need for more qualified engineers, the private College for Civil Engineers in Putney was established in 1839, and the UK's first Chair of Engineering was established at the University of Glasgow in 1840.
+
+Education
+Civil engineers typically possess an academic degree in civil engineering. The length of study is three to five years, and the completed degree is designated as a bachelor of technology, or a bachelor of engineering. The curriculum generally includes classes in physics, mathematics, project management, design and specific topics in civil engineering. After taking basic courses in most sub-disciplines of civil engineering, they move on to specialize in one or more sub-disciplines at advanced levels. While an undergraduate degree (BEng/BSc) normally provides successful students with industry-accredited qualification, some academic institutions offer post-graduate degrees (MEng/MSc), which allow students to further specialize in their particular area of interest.
+
+Practicing engineers 
+In most countries, a bachelor's degree in engineering represents the first step towards professional certification, and a professional body certifies the degree program. After completing a certified degree program, the engineer must satisfy a range of requirements including work experience and exam requirements before being certified. Once certified, the engineer is designated as a professional engineer (in the United States, Canada and South Africa), a chartered engineer (in most Commonwealth countries), a chartered professional engineer (in Australia and New Zealand), or a European engineer (in most countries of the European Union). There are international agreements between relevant professional bodies to allow engineers to practice across national borders.
+
+The benefits of certification vary depending upon location. For example, in the United States and Canada, "only a licensed professional engineer may prepare, sign and seal, and submit engineering plans and drawings to a public authority for approval, or seal engineering work for public and private clients." This requirement is enforced under provincial law such as the Engineers Act in Quebec. No such legislation has been enacted in other countries including the United Kingdom. In Australia, state licensing of engineers is limited to the state of Queensland. Almost all certifying bodies maintain a code of ethics which all members must abide by.
+
+Engineers must obey contract law in their contractual relationships with other parties. In cases where an engineer's work fails, they may be subject to the law of tort of negligence, and in extreme cases, criminal charges. An engineer's work must also comply with numerous other rules and regulations such as building codes and environmental law.
+
+Sub-disciplines
+
+There are a number of sub-disciplines within the broad field of civil engineering. General civil engineers work closely with surveyors and specialized civil engineers to design grading, drainage, pavement, water supply, sewer service, dams, electric and communications supply. General civil engineering is also referred to as site engineering, a branch of civil engineering that primarily focuses on converting a tract of land from one usage to another. Site engineers spend time visiting project sites, meeting with stakeholders, and preparing construction plans. Civil engineers apply the principles of geotechnical engineering, structural engineering, environmental engineering, transportation engineering and construction engineering to residential, commercial, industrial and public works projects of all sizes and levels of construction.
+
+Coastal engineering
+
+Coastal engineering is concerned with managing coastal areas. In some jurisdictions, the terms sea defense and coastal protection mean defense against flooding and erosion, respectively. Coastal defense is the more traditional term, but coastal management has become popular as well.
+
+Construction engineering
+
+Construction engineering involves planning and execution, transportation of materials, site development based on hydraulic, environmental, structural and geotechnical engineering. As construction firms tend to have higher business risk than other types of civil engineering firms do, construction engineers often engage in more business-like transactions, for example, drafting and reviewing contracts, evaluating logistical operations, and monitoring prices of supplies.
+
+Earthquake engineering
+
+Earthquake engineering involves designing structures to withstand hazardous earthquake exposures. Earthquake engineering is a sub-discipline of structural engineering. The main objectives of earthquake engineering are to understand interaction of structures on the shaky ground; foresee the consequences of possible earthquakes; and design, construct and maintain structures to perform at earthquake in compliance with building codes.
+
+Environmental engineering
+
+Environmental engineering is the contemporary term for sanitary engineering, though sanitary engineering traditionally had not included much of the hazardous waste management and environmental remediation work covered by environmental engineering. Public health engineering and environmental health engineering are other terms being used.
+
+Environmental engineering deals with treatment of chemical, biological, or thermal wastes, purification of water and air, and remediation of contaminated sites after waste disposal or accidental contamination. Among the topics covered by environmental engineering are pollutant transport, water purification, waste water treatment, air pollution, solid waste treatment, recycling, and hazardous waste management. Environmental engineers administer pollution reduction, green engineering, and industrial ecology. Environmental engineers also compile information on environmental consequences of proposed actions.
+
+Forensic engineering
+
+Forensic engineering is the investigation of materials, products, structures or components that fail or do not operate or function as intended, causing personal injury or damage to property. The consequences of failure are dealt with by the law of product liability. The field also deals with retracing processes and procedures leading to accidents in operation of vehicles or machinery. The subject is applied most commonly in civil law cases, although it may be of use in criminal law cases. Generally the purpose of a Forensic engineering investigation is to locate cause or causes of failure with a view to improve performance or life of a component, or to assist a court in determining the facts of an accident. It can also involve investigation of intellectual property claims, especially patents.
+
+Geotechnical engineering
+
+Geotechnical engineering studies rock and soil supporting civil engineering systems. Knowledge from the field of soil science, materials science, mechanics, and hydraulics is applied to safely and economically design foundations, retaining walls, and other structures. Environmental efforts to protect groundwater and safely maintain landfills have spawned a new area of research called geo-environmental engineering.
+
+Identification of soil properties presents challenges to geotechnical engineers. Boundary conditions are often well defined in other branches of civil engineering, but unlike steel or concrete, the material properties and behavior of soil are difficult to predict due to its variability and limitation on investigation. Furthermore, soil exhibits nonlinear (stress-dependent) strength, stiffness, and dilatancy (volume change associated with application of shear stress), making studying soil mechanics all the more difficult. Geotechnical engineers frequently work with professional geologists,  Geological Engineering professionals and soil scientists.
+
+Materials science and engineering
+
+Materials science is closely related to civil engineering. It studies fundamental characteristics of materials, and deals with ceramics such as concrete and mix asphalt concrete, strong metals such as aluminum and steel, and thermosetting polymers including polymethylmethacrylate (PMMA) and carbon fibers.
+
+Materials engineering involves protection and prevention (paints and finishes). Alloying combines two types of metals to produce another metal with desired properties. It incorporates elements of applied physics and chemistry. With recent media attention on nanoscience and nanotechnology, materials engineering has been at the forefront of academic research. It is also an important part of forensic engineering and failure analysis.
+
+Site development and planning
+
+Site development, also known as site planning, is focused on the planning and development potential of a site as well as addressing possible impacts from permitting issues and environmental challenges.
+
+Structural engineering
+
+Structural engineering is concerned with the structural design and structural analysis of buildings, bridges, towers, flyovers (overpasses), tunnels, off shore structures like oil and gas fields in the sea, aerostructure and other structures. This involves identifying the loads which act upon a structure and the forces and stresses which arise within that structure due to those loads, and then designing the structure to successfully support and resist those loads. The loads can be self weight of the structures, other dead load, live loads, moving (wheel) load, wind load, earthquake load, load from temperature change etc. The structural engineer must design structures to be safe for their users and to successfully fulfill the function they are designed for (to be serviceable). Due to the nature of some loading conditions, sub-disciplines within structural engineering have emerged, including wind engineering and earthquake engineering.
+
+Design considerations will include strength, stiffness, and stability of the structure when subjected to loads which may be static, such as furniture or self-weight, or dynamic, such as wind, seismic, crowd or vehicle loads, or transitory, such as temporary construction loads or impact. Other considerations include cost, constructibility, safety, aesthetics and sustainability.
+
+Surveying
+
+ 
+Surveying is the process by which a surveyor measures certain dimensions that occur on or near the surface of the Earth. Surveying equipment such as levels and theodolites are used for accurate measurement of angular deviation, horizontal, vertical and slope distances. With computerisation, electronic distance measurement (EDM), total stations, GPS surveying and laser scanning have to a large extent supplanted traditional instruments. Data collected by survey measurement is converted into a graphical representation of the Earth's surface in the form of a map. This information is then used by civil engineers, contractors and realtors to design from, build on, and trade, respectively. Elements of a structure must be sized and positioned in relation to each other and to site boundaries and adjacent structures.
+
+Although surveying is a distinct profession with separate qualifications and licensing arrangements, civil engineers are trained in the basics of surveying and mapping, as well as geographic information systems. Surveyors also lay out the routes of railways, tramway tracks, highways, roads, pipelines and streets as well as position other infrastructure, such as harbors, before construction.
+
+Land surveying
+In the United States, Canada, the United Kingdom and most Commonwealth countries land surveying is considered to be a separate and distinct profession. Land surveyors are not considered to be engineers, and have their own professional associations and licensing requirements. The services of a licensed land surveyor are generally required for boundary surveys (to establish the boundaries of a parcel using its legal description) and subdivision plans (a plot or map based on a survey of a parcel of land, with boundary lines drawn inside the larger parcel to indicate the creation of new boundary lines and roads), both of which are generally referred to as Cadastral surveying.
+
+Construction surveying
+Construction surveying is generally performed by specialized technicians. Unlike land surveyors, the resulting plan does not have legal status. Construction surveyors perform the following tasks:
+ Surveying existing conditions of the future work site, including topography, existing buildings and infrastructure, and underground infrastructure when possible;
+ "lay-out" or "setting-out": placing reference points and markers that will guide the construction of new structures such as roads or buildings;
+ Verifying the location of structures during construction;
+ As-Built surveying: a survey conducted at the end of the construction project to verify that the work authorized was completed to the specifications set on plans.
+
+Transportation engineering
+Transportation engineering is concerned with moving people and goods efficiently, safely, and in a manner conducive to a vibrant community. This involves specifying, designing, constructing, and maintaining transportation infrastructure which includes streets, canals, highways, rail systems, airports, ports, and mass transit. It includes areas such as transportation design, transportation planning, traffic engineering, some aspects of urban engineering, queueing theory, pavement engineering, Intelligent Transportation System (ITS), and infrastructure management.
+
+Municipal or urban engineering
+
+Municipal engineering is concerned with municipal infrastructure. This involves specifying, designing, constructing, and maintaining streets, sidewalks, water supply networks, sewers, street lighting, municipal solid waste management and disposal, storage depots for various bulk materials used for maintenance and public works (salt, sand, etc.), public parks and cycling infrastructure. In the case of underground utility networks, it may also include the civil portion (conduits and access chambers) of the local distribution networks of electrical and telecommunications services. It can also include the optimizing of waste collection and bus service networks. Some of these disciplines overlap with other civil engineering specialties, however municipal engineering focuses on the coordination of these infrastructure networks and services, as they are often built simultaneously, and managed by the same municipal authority.  Municipal engineers may also design the site civil works for large buildings, industrial plants or campuses (i.e. access roads, parking lots, potable water supply, treatment or pretreatment of waste water, site drainage, etc.)
+
+Water resources engineering
+
+Water resources engineering is concerned with the collection and management of water (as a natural resource). As a discipline it therefore combines elements of hydrology, environmental science, meteorology, conservation, and resource management. This area of civil engineering relates to the prediction and management of both the quality and the quantity of water in both underground (aquifers) and above ground (lakes, rivers, and streams) resources. Water resource engineers analyze and model very small to very large areas of the earth to predict the amount and content of water as it flows into, through, or out of a facility. Although the actual design of the facility may be left to other engineers.
+
+Hydraulic engineering is concerned with the flow and conveyance of fluids, principally water. This area of civil engineering is intimately related to the design of pipelines, water supply network, drainage facilities (including bridges, dams, channels, culverts, levees, storm sewers), and canals. Hydraulic engineers design these facilities using the concepts of fluid pressure, fluid statics, fluid dynamics, and hydraulics, among others.
+
+Civil engineering systems
+Civil engineering systems is a discipline that promotes the use of systems thinking to manage complexity and change in civil engineering within its wider public context. It posits that the proper development of civil engineering infrastructure requires a holistic, coherent understanding of the relationships between all of the important factors that contribute to successful projects while at the same time emphasizing the importance of attention to technical detail. Its purpose is to help integrate the entire civil engineering project life cycle from conception, through planning, designing, making, operating to decommissioning.
+
+See also
+
+ Architectural engineering
+ Civil engineering software
+ Engineering drawing
+ Geological Engineering
+ Glossary of civil engineering
+ Index of civil engineering articles
+ List of civil engineers
+ List of engineering branches
+ List of Historic Civil Engineering Landmarks
+ Macro-engineering
+ Railway engineering
+ Site survey
+
+Associations 
+
+ American Society of Civil Engineers
+ Canadian Society for Civil Engineering
+ Chartered Institution of Civil Engineering Surveyors
+ Council for the Regulation of Engineering in Nigeria
+ Earthquake Engineering Research Institute
+ Engineers Australia
+ European Federation of National Engineering Associations
+ International Federation of Consulting Engineers
+ Indian Geotechnical Society
+ Institution of Civil Engineers
+ Institution of Structural Engineers
+ Institute of Engineering (Nepal)
+ International Society of Soil Mechanics and Geotechnical Engineering
+ Institution of Engineers, Bangladesh
+ Institution of Engineers (India)
+ Institution of Engineers of Ireland
+ Institute of Transportation Engineers
+ Japan Society of Civil Engineers
+ Pakistan Engineering Council
+ Philippine Institute of Civil Engineers
+ Transportation Research Board
+
+References
+
+Further reading
+
+External links
+
+ The Institution of Civil Engineers
+ Civil Engineering Software Database
+ The Institution of Civil Engineering Surveyors
+ Civil engineering classes, from MIT OpenCourseWare
+
+ 
+Engineering disciplines
+Articles containing video clips
+Cantonese is a language originating in Canton, Guangdong.
+
+Cantonese may also refer to:
+ Yue Chinese, Chinese languages that include Cantonese
+ Cantonese cuisine, the cuisine of Guangdong Province
+ Cantonese people, the native people of Guangdong and Guangxi
+ Lingnan culture, the regional culture often referred to as Cantonese culture
+
+See also
+ Cantonese Braille, a Cantonese-language version of Braille in Hong Kong
+ Cantopop, Cantonese pop music
+Çatalhöyük (; also Çatal Höyük and Çatal Hüyük; from Turkish çatal "fork" + höyük "tumulus") is a tell of a very large Neolithic and Chalcolithic proto-city settlement in southern Anatolia, which existed from approximately 7500 BC to 6400 BC, and flourished around 7000 BC. In July 2012, it was inscribed as a UNESCO World Heritage Site.
+
+Çatalhöyük is located overlooking the Konya Plain, southeast of the present-day city of Konya (ancient Iconium) in Turkey, approximately 140 km (87 mi) from the twin-coned volcano of Mount Hasan. The eastern settlement forms a mound that would have risen about 20 m (66 ft) above the plain at the time of the latest Neolithic occupation. There is also a smaller settlement mound to the west and a Byzantine settlement a few hundred meters to the east. The prehistoric mound settlements were abandoned before the Bronze Age. A channel of the Çarşamba River once flowed between the two mounds, and the settlement was built on alluvial clay which may have been favorable for early agriculture. Currently the closest river to it is the Euphrates.
+
+Archaeology
+
+The site was first excavated by James Mellaart in 1958. He later led a team which further excavated there for four seasons between 1961 and 1965. These excavations revealed this section of Anatolia as a centre of advanced culture in the Neolithic period. Excavation revealed 18 successive layers of buildings signifying various stages of the settlement and eras of history. The bottom layer of buildings can be dated as early as 7100 BC while the top layer is from 5600 BC.
+
+Mellaart was banned from Turkey for his involvement in the Dorak affair in which he published drawings of supposedly important Bronze Age artifacts that later went missing. After this scandal, the site lay idle until 1993, when investigations began under the leadership of Ian Hodder, then at the University of Cambridge. The Hodder led excavations ended in 2018. Hodder, a former student of Mellaart, chose the site as the first "real world" test of his then-controversial theory of post-processual archaeology. The site has always had a strong research emphasis upon engagement with digital methodologies, driven by the project's experimental and reflexive methodological framework. According to Mickel, Hodder's Çatalhöyük Research Project (ÇRP) established itself as a site for progressive methodologies - in terms of adaptable and democratized recording, integration of computerized technologies, sampling strategies, and community involvement."
+
+New excavations are being directed by Ali Umut Türkcan from Anadolu University.
+
+Culture
+
+ 
+
+Çatalhöyük was composed entirely of domestic buildings, with no obvious public buildings. While some of the larger ones have rather ornate murals, the purpose of some rooms remains unclear.
+
+The population of the eastern mound has been estimated to be around 10,000 people, but the population likely varied over the community's history. An average population of between 5,000 and 7,000 is a reasonable estimate. The sites were set up as large numbers of buildings clustered together. Households looked to their neighbors for help, trade, and possible marriage for their children. The inhabitants lived in mudbrick houses that were crammed together in an aggregate structure. No footpaths or streets were used between the dwellings, which were clustered in a honeycomb-like maze. Most were accessed by holes in the ceiling and doors on the side of the houses, with doors reached by ladders and stairs. The rooftops were effectively streets. The ceiling openings also served as the only source of ventilation, allowing smoke from the houses' open hearths and ovens to escape. 
+
+Houses had plaster interiors characterized by squared-off timber ladders or steep stairs. These were usually on the south wall of the room, as were cooking hearths and ovens. The main rooms contained raised platforms that may have been used for a range of domestic activities. Typical houses contained two rooms for everyday activity, such as cooking and crafting. All interior walls and platforms were plastered to a smooth finish. Ancillary rooms were used as storage, and were accessed through low openings from main rooms.
+
+All rooms were kept scrupulously clean. Archaeologists identified very little rubbish in the buildings, finding middens outside the ruins, with sewage and food waste, as well as significant amounts of ash from burning wood, reeds and animal dung. In good weather, many daily activities may also have taken place on the rooftops, which may have formed a plaza. In later periods, large communal ovens appear to have been built on these rooftops. Over time, houses were renewed by partial demolition and rebuilding on a foundation of rubble, which was how the mound was gradually built up. As many as eighteen levels of settlement have been uncovered.
+
+As a part of ritual life, the people of Çatalhöyük buried their dead within the village. Human remains have been found in pits beneath the floors and, especially, beneath hearths, the platforms within the main rooms, and under beds. Bodies were tightly flexed before burial and were often placed in baskets or wound and wrapped in reed mats. Disarticulated bones in some graves suggest that bodies may have been exposed in the open air for a time before the bones were gathered and buried. In some cases, graves were disturbed, and the individual's head removed from the skeleton. These heads may have been used in rituals, as some were found in other areas of the community. In a woman's grave spinning whorls were recovered and in a man's grave, stone axes. Some skulls were plastered and painted with ochre to recreate faces, a custom more characteristic of Neolithic sites in Syria and at Neolithic Jericho than at sites closer by.
+
+Vivid murals and figurines are found throughout the settlement, on interior and exterior walls. Distinctive clay figurines of women, notably the Seated Woman of Çatalhöyük, have been found in the upper levels of the site. Although no identifiable temples have been found, the graves, murals, and figurines suggest that the people of Çatalhöyük had a religion rich in symbols. Rooms with concentrations of these items may have been shrines or public meeting areas. Predominant images include men with erect phalluses, hunting scenes, red images of the now extinct aurochs (wild cattle) and stags, and vultures swooping down on headless figures. Relief figures are carved on walls, such as of lionesses facing one another.
+
+Heads of animals, especially of cattle, were mounted on walls. A painting of the village, with the twin mountain peaks of Hasan Dağ in the background, is frequently cited as the world's oldest map, and the first landscape painting. However, some archaeologists question this interpretation. Stephanie Meece, for example, argues that it is more likely a painting of a leopard skin instead of a volcano, and a decorative geometric design instead of a map.
+
+Religion
+
+A feature of Çatalhöyük are its female figurines.  Mellaart, the original excavator, argued that these carefully made figurines, carved and molded from marble, blue and brown limestone, schist, calcite, basalt, alabaster, and clay, represented a female deity. Although a male deity existed as well, "statues of a female deity far outnumber those of the male deity, who moreover, does not appear to be represented at all after Level VI". To date, eighteen levels have been identified. These figurines were found primarily in areas Mellaart believed to be shrines. The stately goddess seated on a throne flanked by two lionesses was found in a grain bin, which Mellaart suggests might have been a means of ensuring the harvest or protecting the food supply.
+
+Whereas Mellaart excavated nearly two hundred buildings in four seasons, the current excavator, Ian Hodder, spent an entire season excavating one building alone. Hodder and his team, in 2004 and 2005, began to believe that the patterns suggested by Mellaart were false.  They found one similar figurine, but the vast majority did not imitate the Mother Goddess style that Mellaart suggested. Instead of a Mother Goddess culture, Hodder points out that the site gives little indication of a matriarchy or patriarchy.
+
+In an article in the Turkish Daily News, Hodder is reported as denying that Çatalhöyük was a matriarchal society and quoted as saying "When we look at what they eat and drink and at their social statues, we see that men and women had the same social status. There was a balance of power. Another example is the skulls found. If one's social status was of high importance in Çatalhöyük, the body and head were separated after death. The number of female and male skulls found during the excavations is almost equal." In another article in the Hurriyet Daily News Hodder is reported to say "We have learned that men and women were equally approached".
+
+In a report in September 2009 on the discovery of around 2000 figurines Hodder is quoted as saying:
+
+Professor Lynn Meskell explained that while the original excavations had found only 200 figures, the new excavations had uncovered 2,000 figures, most of which depicted animals, and fewer than 5% of the figurines depicted women.
+
+Estonian folklorist Uku Masing has suggested as early as in 1976, that Çatalhöyük was probably a hunting and gathering religion and the Mother Goddess figurine did not represent a female deity. He implied that perhaps a longer period of time was needed to develop symbols for agricultural rites. His theory was developed in the paper "Some remarks on the mythology of the people of Catal Hüyük".
+
+Economy 
+Çatalhöyük has strong evidence of an egalitarian society, as no houses with distinctive features (belonging to royalty or religious hierarchy, for example) have been found so far.  The most recent investigations also reveal little social distinction based on gender, with men and women receiving equivalent nutrition and seeming to have equal social status, as typically found in Paleolithic cultures. Children observed domestic areas. They learned how to perform rituals and how to build or repair houses by watching the adults make statues, beads and other objects.
+Çatalhöyük's spatial layout may be due to the close kin relations exhibited amongst the people. It can be seen, in the layout, that the people were "divided into two groups who lived on opposite sides of the town, separated by a gully." Furthermore, because no nearby towns were found from which marriage partners could be drawn, "this spatial separation must have marked two intermarrying kinship groups." This would help explain how a settlement so early on would become so large.
+
+In the upper levels of the site, it becomes apparent that the people of Çatalhöyük were honing skills in agriculture and the domestication of animals. Female figurines have been found within bins used for storage of cereals, such as wheat and barley, and the figurines are presumed to be of a deity protecting the grain. Peas were also grown, and almonds, pistachios and fruit were harvested from trees in the surrounding hills. Sheep were domesticated and evidence suggests the beginning of cattle domestication as well.  However, hunting continued to be a major source of food for the community. Pottery and obsidian tools appear to have been major industries; obsidian tools were probably both used and also traded for items such as Mediterranean sea shells and flint from Syria. Noting the lack of hierarchy and economic inequality, historian and anti-capitalist author Murray Bookchin has argued that Çatalhöyük was an early example of anarcho-communism.
+
+Conversely, a 2014 paper argues that the picture of Çatalhöyük is more complex and that while there seemed to have been an egalitarian distribution of cooking tools and some stone tools, unbroken quern-stones and storage units were more unevenly distributed. Private property existed but shared tools also existed. It was also suggested that Çatalhöyük was becoming less egalitarian, with greater inter-generational wealth transmission.
+
+See also
+Boncuklu Höyük
+Cities of the ancient Near East
+Cucuteni–Trypillian culture
+Göbekli Tepe
+Kamyana Mohyla
+List of largest cities throughout history
+List of Stone Age art
+Matriarchy
+Neolithic Revolution
+Old Europe (archaeology)
+Sacred bull
+Venus figurines
+
+References
+
+Sources
+ Bailey, Douglass. Prehistoric Figurines: Representation and Corporeality in the Neolithic. New York: Routledge, 2005 (hardcover, ; paperback, ).
+ Balter, Michael. The Goddess and the Bull: Çatalhöyük: An Archaeological Journey to the Dawn of Civilization. New York: Free Press, 2004 (hardcover, ); Walnut Creek, CA: Left Coast Press, 2006 (paperback, ). A highly condensed version was published in The Smithsonian Magazine, May 2005.
+ Dural, Sadrettin. "Protecting Catalhoyuk: Memoir of an Archaeological Site Guard." Contributions by Ian Hodder.  Translated by Duygu Camurcuoglu Cleere.  Walnut Creek, CA: Left Coast Press, 2007. .
+ Hodder, Ian. "Women and Men at Çatalhöyük," Scientific American Magazine, January 2004 (update V15:1, 2005).
+ Hodder, I. (2014). "Çatalhöyük excavations: the 2000-2008 seasons.", British Institute at Ankara, Monumenta Archaeologica 29, 
+ Hodder, Ian. Twenty-Five Years of Research at Çatalhöyük, Near Eastern Archaeology; Chicago, vol. 83, iss. 2, pp. 72–29, June 2020
+ Hodder, Ian. The Leopard's Tale: Revealing the Mysteries of Çatalhöyük. London; New York: Thames & Hudson, 2006 (hardcover, ). (The UK title of this work is Çatalhöyük: The Leopard's Tale.)
+Hodder, Ian; Bogaard, Amy; Engel, Claudia; Pearson, Jessica; Wolfhagen, Jesse., "Spatial autocorrelation analysis and the social organisation of crop and herd management at Çatalhöyük", Anatolian Studies, London, vol. 72, pp. 1–15, 2022
+Mallett, Marla, "The Goddess from Anatolia:  An Updated View of the Catak Huyuk Controversy," in Oriental Rug Review, Vol. XIII, No. 2 (December 1992/January 1993).
+ Mellaart, James. Çatal Hüyük: A Neolithic Town in Anatolia. London: Thames & Hudson, 1967; New York: McGraw-Hill Book Company, 1967. Online at archive.org
+ On the Surface: Çatalhöyük 1993–95, edited by Ian Hodder. Cambridge: McDonald Institute for Archaeological Research and British Institute of Archaeology at Ankara, 1996 ().
+ 
+ Todd, Ian A. Çatal Hüyük in Perspective. Menlo Park, CA: Cummings Pub. Co., 1976 (; ).
+
+External links
+
+What we learned from 25 Years of Research at Catalhoyuk - Ian Hodder - Oriental Institute lecture Dec 4, 2019
+ Çatalhöyük — Excavations of a Neolithic Anatolian Höyük, Çatalhöyük excavation official website
+ Çatalhöyük photos
+ The First Cities: Why Settle Down? The Mystery of Communities, by Michael Balter, Çatalhöyük excavation official biographer
+ Interview with Ian Hodder March 201 "Ian Hodder: Çatalhöyük, Religion & Templeton's 25%"
+
+1958 archaeological discoveries
+Anatolia
+Archaeological discoveries in Turkey
+Archaeological museums in Turkey
+Archaeological sites in Central Anatolia
+Archaeological sites of prehistoric Anatolia
+Buildings and structures in Konya Province
+Chalcolithic sites of Asia
+Former populated places in Turkey
+Megasites
+Museums in Konya Province
+Neolithic settlements
+Neolithic sites of Asia
+Populated places established in the 8th millennium BC
+Clement Richard Attlee, 1st Earl Attlee,  (3 January 18838 October 1967) was a British statesman and Labour Party politician who served as Prime Minister of the United Kingdom from 1945 to 1951 and Leader of the Labour Party from 1935 to 1955. He was Deputy Prime Minister during the wartime coalition government under Winston Churchill, and served twice as Leader of the Opposition from 1935 to 1940 and from 1951 to 1955. Attlee remains the longest serving Labour leader and is widely considered by historians and members of the public through various polls to be one of the greatest Prime Ministers of the United Kingdom.
+
+Attlee was born into an upper-middle-class family, the son of a wealthy London solicitor. After attending Haileybury College and the University of Oxford, he practised as a barrister. The volunteer work he carried out in London's East End exposed him to poverty, and his political views shifted leftwards thereafter. He joined the Independent Labour Party, gave up his legal career, and began lecturing at the London School of Economics; with his work briefly interrupted by service in the First World War. In 1919, he became mayor of Stepney and in 1922 was elected as the Member for Limehouse. Attlee served in the first Labour minority government led by Ramsay MacDonald in 1924, and then joined the Cabinet during MacDonald's second minority (1929–1931). After retaining his seat in Labour's landslide defeat of 1931, he became the party's Deputy Leader. Elected Leader of the Labour Party in 1935, and at first advocating pacificism and opposing re-armament, he became a critic of Neville Chamberlain's policy of appeasement in the lead-up to the Second World War. Attlee took Labour into the wartime coalition government in 1940 and served under Winston Churchill, initially as Lord Privy Seal and then as Deputy Prime Minister from 1942. 
+
+As the European front of WWII reached its conclusion, the war cabinet headed by Churchill was dissolved and elections were scheduled to be held. The Labour Party, led by Attlee, won a landslide victory in the 1945 general election, on their post-war recovery platform. Following the election, Attlee led the construction of the first Labour majority government. His government's Keynesian approach to economic management aimed to maintain full employment, a mixed economy and a greatly enlarged system of social services provided by the state. To this end, it undertook the nationalisation of public utilities and major industries, and implemented wide-ranging social reforms, including the passing of the National Insurance Act 1946 and National Assistance Act 1948, the formation of the National Health Service (NHS) in 1948, and the enlargement of public subsidies for council house building. His government also reformed trade union legislation, working practices and children's services; it created the National Parks system, passed the New Towns Act 1946 and established the town and country planning system. The Attlee government proved itself to be a radical, reforming government. From 1945 to 1948, over 200 public Acts of Parliament were passed, with eight major pieces of legislation placed on the statute book in 1946 alone.
+
+Attlee's foreign policy focused on decolonization efforts which he delegated to Ernest Bevin, but personally oversaw the partition of India (1947), the independence of Burma and Ceylon, and the dissolution of the British mandates of Palestine and Transjordan. Attlee and Bevin encouraged the United States to take a vigorous role in the Cold War; unable to afford military intervention in Greece during its civil war, he called on Washington to counter the communists there. The strategy of containment was formalized between the two nations through the Truman Doctrine. He supported the Marshall Plan to rebuild Western Europe with American money and, in 1949, promoted the NATO military alliance against the Soviet bloc. After leading Labour to a narrow victory at the 1950 general election, he sent British troops to fight alongside South Korea in the Korean War.
+
+Attlee had inherited a country close to bankruptcy following the Second World War and beset by food, housing and resource shortages; despite his social reforms and economic programme, these problems persisted throughout his premiership, alongside recurrent currency crises and dependence on US aid. His party was narrowly defeated by the Conservatives in the 1951 general election, despite winning the most votes. He continued as Labour leader but retired after losing the 1955 election and was elevated to the House of Lords, where he served until his death in 1967. In public, he was modest and unassuming, but behind the scenes his depth of knowledge, quiet demeanour, objectivity and pragmatism proved decisive. He is often ranked as one of the greatest British prime ministers. In 2004, he was voted the most successful British Prime Minister of the 20th century by a poll of 139 academics. The majority of those responses singled out the Attlee government's welfare state reforms and the creation of the NHS as the key 20th century domestic policy achievements. He is also commended for continuing the 'Special Relationship' with the US and active involvement in NATO.
+
+Early life
+Attlee was born on 3 January 1883 in Putney, Surrey (now part of London), into an upper middle-class family, the seventh of eight children. His father was Henry Attlee (1841–1908), a solicitor, and his mother was Ellen Bravery Watson (1847–1920), daughter of Thomas Simons Watson, secretary for the Art Union of London. His parents were "committed Anglicans" who read prayers and psalms each morning at breakfast.
+
+Attlee grew up in a two-storey villa with a large garden and tennis court, staffed by three servants and a gardener. His father, a political Liberal, had inherited family interests in milling and brewing, and became a senior partner in the law firm of Druces, also serving a term as president of the Law Society of England and Wales. In 1898 he purchased a  estate, Comaques in Thorpe-le-Soken, Essex. At the age of nine, Attlee was sent to board at Northaw Place, a boys' preparatory school in Hertfordshire. In 1896 he followed his brothers to Haileybury College, where he was a middling student. He was influenced by the Darwinist views of his housemaster Frederick Webb Headley, and in 1899 he published an attack on striking London cab-drivers in the school magazine, predicting they would soon have to "beg for their fares".
+
+In 1901, Attlee went up to University College, Oxford, reading modern history. He and his brother Tom "were given a generous stipend by their father and embraced the university lifestyle—rowing, reading and socializing". He was later described by a tutor as "level-headed, industrious, dependable man with no brilliance of style ... but with excellent sound judgement". At university he had little interest in politics or economics, later describing his views at this time as "good old fashioned imperialist conservative". He graduated Bachelor of Arts in 1904 with second-class honours.
+
+Attlee then trained as a barrister at the Inner Temple and was called to the bar in March 1906. He worked for a time at his father's law firm Druces and Attlee but did not enjoy the work, and had no particular ambition to succeed in the legal profession. He also played football for non-League club Fleet. Attlee's father died in 1908, leaving an estate valued for probate at £75,394 (equivalent to £ in ).
+
+Early career 
+In 1906, he became a volunteer at Haileybury House, a charitable club for working-class boys in Stepney in the East End of London run by his old school, and from 1907 to 1909 he served as the club's manager. Until then, his political views had been more conservative. However, after his shock at the poverty and deprivation he saw while working with the slum children, he came to the view that private charity would never be sufficient to alleviate poverty and that only direct action and income redistribution by the state would have any serious effect. This sparked a process that caused him to convert to socialism. He subsequently joined the Independent Labour Party (ILP) in 1908 and became active in local politics. In 1909, he stood unsuccessfully at his first election, as an ILP candidate for Stepney Borough Council.
+
+He also worked briefly as a secretary for Beatrice Webb in 1909, before becoming a secretary for Toynbee Hall. He worked for Webb's campaign of popularisation of the Minority Report as he was very active in Fabian Society circles, in which he would go round visiting many political societies—Liberal, Conservative and socialist—to explain and popularise the ideas, as well as recruiting lecturers deemed suitable to work on the campaign. In 1911, he was employed by the Government as an "official explainer"—touring the country to explain Chancellor of the Exchequer David Lloyd George's National Insurance Act. He spent the summer of that year touring Essex and Somerset on a bicycle, explaining the Act at public meetings. A year later, he became a lecturer at the London School of Economics, teaching Social science and Public administration.
+
+Military service 
+Following the outbreak of the First World War in August 1914, Attlee applied to join the British Army. Initially his application was turned down, as his age of 31 was seen as being too old; however, he was eventually commissioned as a temporary lieutenant in the 6th (Service) Battalion, South Lancashire Regiment, on 30 September 1914. On 9 February 1915 he was promoted to captain, and on 14 March was appointed battalion adjutant. The 6th South Lancashires were part of the 38th Brigade of the 13th (Western) Division, which served in the Gallipoli campaign in Turkey. Attlee's decision to fight caused a rift between him and his older brother Tom, who, as a conscientious objector, spent much of the war in prison.
+
+After a period spent fighting in Gallipoli, Attlee collapsed after falling ill with dysentery and was put on a ship bound for England to recover. When he woke up he wanted to get back to action as soon as possible, and asked to be let off the ship in Malta, where he stayed in hospital in order to recover. His hospitalisation coincided with the Battle of Sari Bair, which saw a large number of his comrades killed. Upon returning to action, he was informed that his company had been chosen to hold the final lines during the evacuation of Suvla. As such, he was the penultimate man to be evacuated from Suvla Bay, the last being General Stanley Maude.
+
+The Gallipoli Campaign had been engineered by the First Lord of the Admiralty, Winston Churchill. Although it was unsuccessful, Attlee believed that it was a bold strategy which could have been successful if it had been better implemented on the ground. This led to an admiration for Churchill as a military strategist, something which would make their working relationship in later years productive.
+
+He later served in the Mesopotamian campaign in what is now Iraq, where in April 1916 he was badly wounded, being hit in the leg by shrapnel from friendly fire while storming an enemy trench during the Battle of Hanna. The battle was an unsuccessful attempt to relieve the Siege of Kut, and many of Attlee's fellow soldiers were also wounded or killed. He was sent firstly to India, and then back to the UK to recover. On 18 December 1916 he was transferred to the Heavy Section of the Machine Gun Corps, and 1 March 1917 he was promoted to the temporary rank of major, leading him to be known as "Major Attlee" for much of the inter-war period. He would spend most of 1917 training soldiers at various locations in England. From 2 to 9 July 1917, he was the temporary commanding officer (CO) of the newly formed L (later 10th) Battalion, the Tank Corps at Bovington Camp, Dorset. From 9 July, he assumed command of the 30th Company of the same battalion; however, he did not deploy to France with it in December 1917, as he was transferred back to the South Lancashire Regiment on 28 November.
+
+After fully recovering from his injuries, he was sent to France in June 1918 to serve on the Western Front for the final months of the war. After being discharged from the Army in January 1919, he returned to Stepney, and returned to his old job lecturing part-time at the London School of Economics.
+
+Early political career
+
+Local politics
+Attlee returned to local politics in the immediate post-war period, becoming mayor of the Metropolitan Borough of Stepney, one of London's most deprived inner-city boroughs, in 1919. During his time as mayor, the council undertook action to tackle slum landlords who charged high rents but refused to spend money on keeping their property in habitable condition. The council served and enforced legal orders on homeowners to repair their property. It also appointed health visitors and sanitary inspectors, reducing the infant mortality rate, and took action to find work for returning unemployed ex-servicemen.
+
+In 1920, while mayor, he wrote his first book, The Social Worker, which set out many of the principles that informed his political philosophy and that were to underpin the actions of his government in later years. The book attacked the idea that looking after the poor could be left to voluntary action. He wrote that:In a civilised community, although it may be composed of self-reliant individuals, there will be some persons who will be unable at some period of their lives to look after themselves, and the question of what is to happen to them may be solved in three ways – they may be neglected, they may be cared for by the organised community as of right, or they may be left to the goodwill of individuals in the community. [...] Charity is only possible without loss of dignity between equals. A right established by law, such as that to an old age pension, is less galling than an allowance made by a rich man to a poor one, dependent on his view of the recipient's character, and terminable at his caprice. In 1921, George Lansbury, the Labour mayor of the neighbouring borough of Poplar, and future Labour Party leader, launched the Poplar Rates Rebellion; a campaign of disobedience seeking to equalise the poor relief burden across all the London boroughs. Attlee, who was a personal friend of Lansbury, strongly supported this. However, Herbert Morrison, the Labour mayor of nearby Hackney, and one of the main figures in the London Labour Party, strongly denounced Lansbury and the rebellion. During this period, Attlee developed a lifelong dislike of Morrison.
+
+Member of Parliament
+At the 1922 general election, Attlee became the Member of Parliament (MP) for the constituency of Limehouse in Stepney. At the time, he admired Ramsay MacDonald and helped him get elected as Labour Party leader at the 1922 leadership election. He served as MacDonald's Parliamentary Private Secretary for the brief 1922 parliament. His first taste of ministerial office came in 1924, when he served as Under-Secretary of State for War in the short-lived first Labour government, led by MacDonald.
+
+Attlee opposed the 1926 General Strike, believing that strike action should not be used as a political weapon. However, when it happened, he did not attempt to undermine it. At the time of the strike, he was chairman of the Stepney Borough Electricity Committee. He negotiated a deal with the Electrical Trade Union so that they would continue to supply power to hospitals, but would end supplies to factories. One firm, Scammell and Nephew Ltd, took a civil action against Attlee and the other Labour members of the committee (although not against the Conservative members who had also supported this). The court found against Attlee and his fellow councillors and they were ordered to pay £300 damages. The decision was later reversed on appeal, but the financial problems caused by the episode almost forced Attlee out of politics.
+
+In 1927, he was appointed a member of the multi-party Simon Commission, a royal commission set up to examine the possibility of granting self-rule to India. Due to the time he needed to devote to the commission, and contrary to a promise MacDonald made to Attlee to induce him to serve on the commission, he was not initially offered a ministerial post in the Second Labour Government, which entered office after the 1929 general election. Attlee's service on the Commission equipped him with a thorough exposure to India and many of its political leaders. By 1933 he argued that British rule was alien to India and was unable to make the social and economic reforms necessary for India's progress. He became the British leader most sympathetic to Indian independence (as a dominion), preparing him for his role in deciding on independence in 1947.
+
+In May 1930, Labour MP Oswald Mosley left the party after its rejection of his proposals for solving the unemployment problem, and Attlee was given Mosley's post of Chancellor of the Duchy of Lancaster. In March 1931, he became Postmaster General, a post he held for five months until August, when the Labour government fell, after failing to agree on how to tackle the financial crisis of the Great Depression. That month MacDonald and a few of his allies formed a National Government with the Conservatives and Liberals, leading them to be expelled from Labour. MacDonald offered Attlee a job in the National Government, but he turned down the offer and opted to stay loyal to the main Labour party.
+
+After Ramsay MacDonald formed the National Government, Labour was deeply divided. Attlee had long been close to MacDonald and now felt betrayed—as did most Labour politicians. During the course of the second Labour government, Attlee had become increasingly disillusioned with MacDonald, whom he came to regard as vain and incompetent, and of whom he later wrote scathingly in his autobiography. He would write:
+
+In the old days I had looked up to MacDonald as a great leader. He had a fine presence and great oratorical power. The unpopular line which he took during the First World War seemed to mark him as a man of character. Despite his mishandling of the Red Letter episode, I had not appreciated his defects until he took office a second time. I then realised his reluctance to take positive action and noted with dismay his increasing vanity and snobbery, while his habit of telling me, a junior Minister, the poor opinion he had of all his Cabinet colleagues made an unpleasant impression. I had not, however, expected that he would perpetrate the greatest betrayal in the political history of this country ... The shock to the Party was very great, especially to the loyal workers of the rank-and-file who had made great sacrifices for these men.
+
+Deputy Leader
+The 1931 general election held later that year was a disaster for the Labour Party, which lost over 200 seats, returning only 52 MPs to Parliament. The vast majority of the party's senior figures, including the Leader Arthur Henderson, lost their seats. Attlee, however, narrowly retained his Limehouse seat, with his majority being slashed from 7,288 to just 551. He was one of only three Labour MPs who had experience of government to retain their seats, along with George Lansbury and Stafford Cripps. Accordingly, Lansbury was elected Leader unopposed with Attlee as his deputy.
+
+Most of the remaining Labour MPs after 1931 were elderly trade union officials who could not contribute much to debates, Lansbury was in his 70s, and Stafford Cripps another main figure of the Labour front bench who had entered Parliament in 1931, was inexperienced. As one of the most capable and experienced of the remaining Labour MPs, Attlee therefore shouldered a lot of the burden of providing an opposition to the National Government in the years 1931–35, during this time he had to extend his knowledge of subjects which he had not studied in any depth before, such as finance and foreign affairs in order to provide an effective opposition to the government.
+
+Attlee effectively served as acting leader for nine months from December 1933, after Lansbury fractured his thigh in an accident, which raised Attlee's public profile considerably. It was during this period, however, that personal financial problems almost forced Attlee to quit politics altogether. His wife had become ill, and at that time there was no separate salary for the Leader of the Opposition. On the verge of resigning from Parliament, he was persuaded to stay by Stafford Cripps, a wealthy socialist, who agreed to make a donation to party funds to pay him an additional salary until Lansbury could take over again.
+
+During 1932–33 Attlee flirted with, and then drew back from radicalism, influenced by Stafford Cripps who was then on the radical wing of the party. He was briefly a member of the Socialist League, which had been formed by former Independent Labour Party (ILP) members, who opposed the ILP's disaffiliation from the main Labour Party in 1932. At one point he agreed with the proposition put forward by Cripps that gradual reform was inadequate and that a socialist government would have to pass an emergency powers act, allowing it to rule by decree to overcome any opposition by vested interests until it was safe to restore democracy. He admired Oliver Cromwell's strong-armed rule and use of major generals to control England. After looking more closely at Hitler, Mussolini, Stalin, and even his former colleague Oswald Mosley, leader of the new blackshirt fascist movement in Britain, Attlee retreated from his radicalism, and distanced himself from the League, and argued instead that the Labour Party must adhere to constitutional methods and stand forthright for democracy and against totalitarianism of either the left or right. He always supported the crown, and as Prime Minister was close to King George VI.
+
+Leader of the Opposition
+George Lansbury, a committed pacifist, resigned as the Leader of the Labour Party at the 1935 Party Conference on 8 October, after delegates voted in favour of sanctions against Italy for its aggression against Abyssinia. Lansbury had strongly opposed the policy, and felt unable to continue leading the party. Taking advantage of the disarray in the Labour Party, the Prime Minister Stanley Baldwin announced on 19 October that a general election would be held on 14 November. With no time for a leadership contest, the party agreed that Attlee should serve as interim leader, on the understanding that a leadership election would be held after the general election. Attlee therefore led Labour through the 1935 election, which saw the party stage a partial comeback from its disastrous 1931 performance, winning 38 per cent of the vote, the highest share Labour had won up to that point, and gaining over one hundred seats.
+
+Attlee stood in the subsequent leadership election, held soon afterward, where he was opposed by Herbert Morrison, who had just re-entered parliament in the recent election, and Arthur Greenwood: Morrison was seen as the favourite, but was distrusted by many sections of the party, especially the left wing. Arthur Greenwood meanwhile was a popular figure in the party; however, his leadership bid was severely hampered by his alcohol problem. Attlee was able to come across as a competent and unifying figure, particularly having already led the party through a general election. He went on to come first in both the first and second ballots, formally being elected Leader of the Labour Party on 3 December 1935.
+
+Throughout the 1920s and most of the 1930s, the Labour Party's official policy had been to oppose rearmament, instead supporting internationalism and collective security under the League of Nations. At the 1934 Labour Party Conference, Attlee declared that, "We have absolutely abandoned any idea of nationalist loyalty. We are deliberately putting a world order before our loyalty to our own country. We say we want to see put on the statute book something which will make our people citizens of the world before they are citizens of this country". During a debate on defence in Commons a year later, Attlee said "We are told (in the White Paper) that there is danger against which we have to guard ourselves. We do not think you can do it by national defence. We think you can only do it by moving forward to a new world. A world of law, the abolition of national armaments with a world force and a world economic system. I shall be told that that is quite impossible". Shortly after those comments, Adolf Hitler proclaimed that German rearmament offered no threat to world peace. Attlee responded the next day noting that Hitler's speech, although containing unfavourable references to the Soviet Union, created "A chance to call a halt in the armaments race ... We do not think that our answer to Herr Hitler should be just rearmament. We are in an age of rearmaments, but we on this side cannot accept that position".
+
+Attlee played little part in the events that would lead up to the abdication of Edward VIII, for despite Baldwin's threat to step down if Edward attempted to remain on the throne after marrying Wallis Simpson, Labour was widely accepted not to be a viable alternative government, owing to the National Government's overwhelming majority in the Commons. Attlee, along with Liberal leader Archibald Sinclair, was eventually consulted with by Baldwin on 24 November 1936, and Attlee agreed with both Baldwin and Sinclair that Edward could not remain on the throne, firmly eliminating any prospect of any alternative government forming were Baldwin to resign.
+
+In April 1936, the Chancellor of the Exchequer, Neville Chamberlain, introduced a Budget which increased the amount spent on the armed forces. Attlee made a radio broadcast in opposition to it, saying:
+
+In June 1936, the Conservative MP Duff Cooper called for an Anglo-French alliance against possible German aggression and called for all parties to support one. Attlee condemned this: "We say that any suggestion of an alliance of this kind—an alliance in which one country is bound to another, right or wrong, by some overwhelming necessity—is contrary to the spirit of the League of Nations, is contrary to the Covenant, is contrary to Locarno is contrary to the obligations which this country has undertaken, and is contrary to the professed policy of this Government". At the Labour Party conference at Edinburgh in October Attlee reiterated that "There can be no question of our supporting the Government in its rearmament policy".
+
+However, with the rising threat from Nazi Germany, and the ineffectiveness of the League of Nations, this policy eventually lost credibility. By 1937, Labour had jettisoned its pacifist position and came to support rearmament and oppose Neville Chamberlain's policy of appeasement.
+
+At the end of 1937, Attlee and a party of three Labour MPs visited Spain and visited the British Battalion of the International Brigades fighting in the Spanish Civil War. One of the companies was named the "Major Attlee Company" in his honour. Attlee was supportive of the Republican government, and at the 1937 Labour conference moved the wider Labour Party towards opposing what he considered the "farce" of the Non-Intervention Committee organised by the British and French governments. In the House of Commons, Attlee stated "I cannot understand the delusion that if Franco wins with Italian and German aid, he will immediately become independent. I think it is a ridiculous proposition." Dalton, the Labour Party's spokesman on foreign policy, also thought that Franco would ally with Germany and Italy. However, Franco's subsequent behaviour proved it was not such a ridiculous proposition. As Dalton later acknowledged, Franco skilfully maintained Spanish neutrality, whereas Hitler would have occupied Spain if Franco had lost the Civil War.
+
+In 1938, Attlee opposed the Munich Agreement, in which Chamberlain negotiated with Hitler to give Germany the German-speaking parts of Czechoslovakia, the Sudetenland: We all feel relief that war has not come this time... we cannot, however, feel that peace has been established, but that we have nothing but an armistice in a state of war. We have been unable to go in for care-free rejoicing. We have felt that we are in the midst of a tragedy... [and] humiliation. This has not been a victory for reason and humanity. It has been a victory for brute force. At every stage of the proceedings there have been time limits laid down... [the] terms laid down as ultimata. We have seen to-day a gallant, civilised and democratic people betrayed and handed over to a ruthless despotism... The events of these last few days constitute one of the greatest diplomatic defeats that this country and France have ever sustained. There can be no doubt that it is a tremendous victory for Herr Hitler. Without firing a shot, by the mere display of military force, he has achieved a dominating position in Europe which Germany failed to win after four years of war. He has overturned the balance of power in Europe... [and] destroyed the last fortress of democracy in Eastern Europe which stood in the way of his ambition. He has opened his way to the food, the oil and the resources which he requires in order to consolidate his military power, and he has successfully defeated and reduced to impotence the forces that might have stood against the rule of violence. [...] The cause [of the crisis which we have undergone] was not the existence of minorities in Czechoslovakia; it was not that the position of the Sudeten Germans had become intolerable. It was not the wonderful principle of self-determination. It was because Herr Hitler had decided that the time was ripe for another step forward in his design to dominate Europe... The minorities question is no new one. [...] [And] short of a drastic and entire reshuffling of these populations there is no possible solution to the problem of minorities in Europe except toleration.
+
+However, the new Czechoslovakian state did not provide equal rights to the Slovaks and Sudeten Germans, with the historian Arnold J. Toynbee already having noted that "for the Germans, Magyars and Poles, who account between them for more than one quarter of the whole population, the present regime in Czechoslovakia is not essentially different from the regimes in the surrounding countries". Anthony Eden in the Munich debate acknowledged that there had been "discrimination, even severe discrimination" against the Sudeten Germans.
+
+In 1937, Attlee wrote a book entitled The Labour Party in Perspective that sold fairly well in which he set out some of his views. He argued that there was no point in Labour compromising on its socialist principles in the belief that this would achieve electoral success. He wrote: "I find that the proposition often reduces itself to this – that if the Labour Party would drop its socialism and adopt a Liberal platform, many Liberals would be pleased to support it. I have heard it said more than once that if Labour would only drop its policy of nationalisation everyone would be pleased, and it would soon obtain a majority. I am convinced it would be fatal for the Labour Party." He also wrote that there was no point in "watering down Labour's socialist creed in order to attract new adherents who cannot accept the full socialist faith. On the contrary, I believe that it is only a clear and bold policy that will attract this support".
+
+In the late 1930s, Attlee sponsored a Jewish mother and her two children, enabling them to leave Germany in 1939 and move to the UK. On arriving in Britain, Attlee invited one of the children into his home in Stanmore, north-west London, where he stayed for several months.
+
+Deputy Prime Minister
+
+Attlee remained as Leader of the Opposition when the Second World War broke out in September 1939. The ensuing disastrous Norwegian campaign would result in a motion of no confidence in Neville Chamberlain. Although Chamberlain survived this, the reputation of his administration was so badly and publicly damaged that it became clear a coalition government would be necessary. Even if Attlee had personally been prepared to serve under Chamberlain in an emergency coalition government, he would never have been able to carry Labour with him. Consequently, Chamberlain tendered his resignation, and Labour and the Conservatives entered a coalition government led by Winston Churchill on 10 May 1940, with Attlee joining the Cabinet as Lord Privy Seal on 12 May.
+
+Attlee and Churchill quickly agreed that the War Cabinet would consist of three Conservatives (initially Churchill, Chamberlain and Lord Halifax) and two Labour members (initially himself and Arthur Greenwood) and that Labour should have slightly more than one third of the posts in the coalition government. Attlee and Greenwood played a vital role in supporting Churchill during a series of War Cabinet debates over whether or not to negotiate peace terms with Hitler following the Fall of France in May 1940; both supported Churchill and gave him the majority he needed in the War Cabinet to continue Britain's resistance.
+
+Only Attlee and Churchill remained in the War Cabinet from the formation of the Government of National Unity in May 1940 through to the election in May 1945. Attlee was initially the Lord Privy Seal, before becoming Britain's first ever Deputy Prime Minister in 1942, as well as becoming the Dominions Secretary and Lord President of the Council on 28 September 1943.
+
+Attlee himself played a generally low key but vital role in the wartime government, working behind the scenes and in committees to ensure the smooth operation of government. In the coalition government, three inter-connected committees effectively ran the country. Churchill chaired the first two, the War cabinet and the Defence Committee, with Attlee deputising for him in these, and answering for the government in Parliament when Churchill was absent. Attlee himself instituted, and later chaired the third body, the Lord President's Committee, which was responsible for overseeing domestic affairs. As Churchill was most concerned with overseeing the war effort, this arrangement suited both men. Attlee himself had largely been responsible for creating these arrangements with Churchill's backing, streamlining the machinery of government and abolishing many committees. He also acted as a conciliator in the government, smoothing over tensions which frequently arose between Labour and Conservative Ministers.
+
+Many Labour activists were baffled by the top leadership role for a man they regarded as having little charisma; Beatrice Webb wrote in her diary in early 1940:
+He looked and spoke like an insignificant elderly clerk, without distinction in the voice, manner or substance of his discourse. To realise that this little nonentity is the Parliamentary Leader of the Labour Party ... and presumably the future P.M. [Prime Minister] is pitiable".
+
+1945 election 
+
+Following the defeat of Nazi Germany and the end of the War in Europe in May 1945, Attlee and Churchill favoured the coalition government remaining in place until Japan had been defeated. However, Herbert Morrison made it clear that the Labour Party would not be willing to accept this, and Churchill was forced to tender his resignation as Prime Minister and call an immediate election.
+
+The war had set in motion profound social changes within Britain and had ultimately led to a widespread popular desire for social reform. This mood was epitomised in the Beveridge Report of 1942, by the Liberal economist William Beveridge. The Report assumed that the maintenance of full employment would be the aim of post-war governments, and that this would provide the basis for the welfare state. Immediately upon its release, it sold hundreds of thousands of copies. All major parties committed themselves to fulfilling this aim, but most historians say that Attlee's Labour Party was seen by the electorate as the party most likely to follow it through.
+
+Labour campaigned on the theme of "Let Us Face the Future", positioning themselves as the party best placed to rebuild Britain following the war, and were widely viewed as having run a strong and positive campaign, while the Conservative campaign centred entirely around Churchill. Despite opinion polls indicating a strong Labour lead, opinion polls were then viewed as a novelty which had not proven their worth, and most commentators expected that Churchill's prestige and status as a "war hero" would ensure a comfortable Conservative victory. Before polling day, The Manchester Guardian surmised that "the chances of Labour sweeping the country and obtaining a clear majority ... are pretty remote". The News of the World predicted a working Conservative majority, while in Glasgow a pundit forecast the result as Conservatives 360, Labour 220, Others 60. Churchill, however, made some costly errors during the campaign. In particular, his suggestion during one radio broadcast that a future Labour Government would require "some form of a gestapo" to implement their policies was widely regarded as being in very bad taste and massively backfired.
+
+When the results of the election were announced on 26 July, they came as a surprise to most, including Attlee himself. Labour had won power by a huge landslide, winning 47.7 per cent of the vote to the Conservatives' 36 per cent. This gave them 393 seats in the House of Commons, a working majority of 146. This was the first time in history that the Labour Party had won a majority in Parliament. When Attlee went to see King George VI at Buckingham Palace to be appointed Prime Minister, the notoriously laconic Attlee and the famously tongue-tied King stood in silence; Attlee finally volunteered the remark, "I've won the election". The King replied "I know. I heard it on the Six O'Clock News".
+
+Prime Minister
+
+Domestic policy
+Francis (1995) argues there was consensus both in the Labour's national executive committee and at party conferences on a definition of socialism that stressed moral improvement as well as material improvement. The Attlee government was committed to rebuilding British society as an ethical commonwealth, using public ownership and controls to abolish extremes of wealth and poverty. Labour's ideology contrasted sharply with the contemporary Conservative Party's defence of individualism, inherited privileges, and income inequality. On 5 July 1948, Clement Attlee replied to a letter dated 22 June from James Murray and ten other MPs who raised concerns about West Indians who arrived on board the . As for the prime minister himself, he was not much focused on economic policy, letting others handle the issues.
+
+Nationalisation
+Attlee's government also carried out their manifesto commitment for nationalisation of basic industries and public utilities. The Bank of England and civil aviation were nationalised in 1946. Coal mining, the railways, road haulage, canals and Cable and Wireless were nationalised in 1947, and electricity and gas followed in 1948. The steel industry was nationalised in 1951. By 1951 about 20 per cent of the British economy had been taken into public ownership.
+
+Nationalisation failed to provide workers with a greater say in the running of the industries in which they worked. It did, however, bring about significant material gains for workers in the form of higher wages, reduced working hours, and improvements in working conditions, especially in regards to safety. As historian Eric Shaw noted of the years following nationalisation, the electricity and gas supply companies became "impressive models of public enterprise" in terms of efficiency, and the National Coal Board was not only profitable, but working conditions for miners had significantly improved as well.
+
+Within a few years of nationalisation, a number of progressive measures had been carried out which did much to improve conditions in the mines, including better pay, a five-day working week, a national safety scheme (with proper standards at all the collieries), a ban on boys under the age of 16 going underground, the introduction of training for newcomers before going down to the coalface, and the making of pithead baths into a standard facility.
+
+The newly established National Coal Board offered sick pay and holiday pay to miners. As noted by Martin Francis:
+Union leaders saw nationalisation as a means to pursue a more advantageous position within a framework of continued conflict, rather than as an opportunity to replace the old adversarial form of industrial relations. Moreover, most workers in nationalised industries exhibited an essentially instrumentalist attitude, favouring public ownership because it secured job security and improved wages rather than because it promised the creation of a new set of socialist relationships in the workplace.
+
+Agriculture
+The Attlee government placed strong emphasis on improving the quality of life in rural areas, benefiting both farmers and other consumers. Security of tenure for farmers was introduced, while consumers were protected by food subsidies and the redistributive effects of deficiency payments. Between 1945 and 1951, the quality of rural life was improved by improvements in gas, electricity, and water services, as well as in leisure and public amenities. In addition, the 1947 Transport Act improved provision of rural bus services, while the Agriculture Act 1947 established a more generous subsidy system for farmers. Legislation was also passed in 1947 and 1948 which established a permanent Agricultural Wages Board to fix minimum wages for agricultural workers.
+
+Attlee's government made it possible for farm workers to borrow up to 90 per cent of the cost of building their own houses, and received a subsidy of £15 a year for 40 years towards that cost. Grants were also made to meet up to half the cost of supplying water to farm buildings and fields, the government met half the cost of bracken eradication and lime spreading, and grants were paid for bringing hill farming land into use that had previously been considered unfit for farming purposes.
+
+In 1946, the National Agricultural Advisory Service was set up to supply agricultural advice and information. The Hill Farming Act 1946 introduced for upland areas a system of grants for buildings, land improvement, and infrastructural improvements such as roads and electrification. The Act also continued a system of headage payments for hill sheep and cattle that had been introduced during the war. The Agricultural Holdings Act 1948 enabled (in effect) tenant farmers to have lifelong tenancies and made provision for compensation in the event of cessations of tenancies. In addition, the Livestock Rearing Act 1951 extended the provisions of the Hill Farming Act 1946 to the upland store cattle and sheep sector.
+
+At a time of world food shortages, it was vital that farmers produced the maximum possible quantities. The government encouraged farmers via subsidies for modernisation, while the National Agricultural Advisory Service provided expertise and price guarantees. As a result of the Attlee government's initiatives in agriculture, there was a 20 per cent increase in output between 1947 and 1952, while Britain adopted one of the most mechanised and efficient farming industries in the world.
+
+Education
+The Attlee government ensured provisions of the Education Act 1944 were fully implemented, with free secondary education becoming a right for the first time. Fees in state grammar schools were eliminated, while new, modern secondary schools were constructed.
+
+The school leaving age was raised to 15 in 1947, an accomplishment helped brought into fruition by initiatives such as the HORSA ("Huts Operation for Raising the School-leaving Age") scheme and the S.F.O.R.S.A. (furniture) scheme. University scholarships were introduced to ensure that no one who was qualified "should be deprived of a university education for financial reasons", while a large school building programme was organised. A rapid increase in the number of trained teachers took place, and the number of new school places was increased.
+
+Increased Treasury funds were made available for education, particularly for upgrading school buildings suffering from years of neglect and war damage. Prefabricated classrooms were built, and 928 new primary schools were constructed between 1945 and 1950. The provision of free school meals was expanded, and opportunities for university entrants were increased. State scholarships to universities were increased, and the government adopted a policy of supplementing university scholarships awards to a level sufficient to cover fees plus maintenance.
+
+Many thousands of ex-servicemen were assisted to go through college who could never have contemplated it before the war. Free milk was also made available to all schoolchildren for the first time. In addition, spending on technical education rose, and the number of nursery schools was increased. Salaries for teachers were also improved, and funds were allocated towards improving existing schools.
+
+In 1947 the Arts Council of Great Britain was set up to encourage the arts.
+
+The Ministry of Education was established under the 1944 Act, and free County Colleges were set up for the compulsory part-time instruction of teenagers between the ages of 15 and 18 who were not in full-time education. An Emergency Training Scheme was also introduced which turned out an extra 25,000 teachers in 1945–1951. In 1947, Regional Advisory Councils were set up to bring together industry and education to find out the needs of young workers "and advise on the provision required, and to secure reasonable economy of provision". That same year, thirteen Area Training Organisations were set up in England and one in Wales to coordinate teacher training.
+
+Attlee's government, however, failed to introduce the comprehensive education for which many socialists had hoped. This reform was eventually carried out by Harold Wilson's government. During its time in office, the Attlee government increased spending on education by over 50 per cent, from £6.5 billion to £10 billion.
+
+Economy
+
+The most significant problem facing Attlee and his ministers remained the economy, as the war effort had left Britain nearly bankrupt. Overseas investments had been used up to pay for the war. The transition to a peacetime economy, and the maintaining of strategic military commitments abroad led to continuous and severe problems with the balance of trade. This resulted in strict rationing of food and other essential goods continuing in the post war period to force a reduction in consumption in an effort to limit imports, boost exports, and stabilise the Pound Sterling so that Britain could trade its way out of its financial state.
+
+The abrupt end of the American Lend-Lease programme in August 1945 almost caused a crisis. Some relief was provided by the Anglo-American loan, negotiated in December 1945. The conditions attached to the loan included making the pound fully convertible to the US dollar. When this was introduced in July 1947, it led to a currency crisis and convertibility had to be suspended after just five weeks. The UK benefited from the American Marshall Aid program in 1948, and the economic situation improved significantly. Another balance of payments crisis in 1949 forced Chancellor of the Exchequer, Stafford Cripps, into devaluation of the pound.
+
+Despite these problems, one of the main achievements of Attlee's government was the maintenance of near full employment. The government maintained most of the wartime controls over the economy, including control over the allocation of materials and manpower, and unemployment rarely rose above 500,000, or 3 per cent of the total workforce. Labour shortages proved a more frequent problem. The inflation rate was also kept low during his term. The rate of unemployment rarely rose above 2 per cent during Attlee's time in office, whilst there was no hard-core of long-term unemployed. Both production and productivity rose as a result of new equipment, while the average working week was shortened.
+
+The government was less successful in housing, which was the responsibility of Aneurin Bevan. The government had a target to build 400,000 new houses a year to replace those which had been destroyed in the war, but shortages of materials and manpower meant that less than half this number were built. Nevertheless, millions of people were rehoused as a result of the Attlee government's housing policies. Between August 1945 and December 1951, 1,016,349 new homes were completed in England, Scotland, and Wales.
+
+When the Attlee government was voted out of office in 1951, the economy had been improved compared to 1945. The period from 1946 to 1951 saw continuous full employment and steadily rising living standards, which increased by about 10 per cent each year. During that same period, the economy grew by 3 per cent a year, and by 1951 the UK had "the best economic performance in Europe, while output per person was increasing faster than in the United States". Careful planning after 1945 also ensured that demobilisation was carried out without having a negative impact upon economic recovery, and that unemployment stayed at very low levels. In addition, the number of motor cars on the roads rose from 3 million to 5 million from 1945 to 1951, and seaside holidays were taken by far more people than ever before. A Monopolies and Restrictive Practices (Inquiry and Control) Act was passed in 1948, which allowed for investigations of restrictive practices and monopolies.
+
+Energy
+1947 proved a particularly difficult year for the government; an exceptionally cold winter that year caused coal mines to freeze and cease production, creating widespread power cuts and food shortages. The Minister of Fuel and Power, Emanuel Shinwell was widely blamed for failing to ensure adequate coal stocks, and soon resigned from his post. The Conservatives capitalised on the crisis with the slogan 'Starve with Strachey and shiver with Shinwell' (referring to the Minister of Food John Strachey).
+
+The crisis led to an unsuccessful plot by Hugh Dalton to replace Attlee as Prime Minister with Ernest Bevin. Later that year Stafford Cripps tried to persuade Attlee to stand aside for Bevin. These plots petered out after Bevin refused to cooperate. Later that year, Dalton resigned as Chancellor after inadvertently leaking details of the budget to a journalist. He was replaced by Cripps.
+
+Foreign policy
+In foreign affairs, the Attlee government was concerned with four main issues: post-war Europe, the onset of the Cold War, the establishment of the United Nations, and decolonisation. The first two were closely related, and Attlee was assisted by Foreign Secretary Ernest Bevin. Attlee also attended the later stages of the Potsdam Conference, where he negotiated with President Harry S. Truman and Joseph Stalin.In the immediate aftermath of the war, the Government faced the challenge of managing relations with Britain's former war-time ally, Stalin and the Soviet Union. Ernest Bevin was a passionate anti-communist, based largely on his experience of fighting communist influence in the trade union movement. Bevin's initial approach to the USSR as Foreign Secretary was "wary and suspicious, but not automatically hostile". Attlee himself sought warm relations with Stalin. He put his trust in the United Nations, rejected notions that the Soviet Union was bent on world conquest, and warned that treating Moscow as an enemy would turn it into one. This put Attlee at sword's point with his foreign minister, the Foreign Office, and the military who all saw the Soviets as a growing threat to Britain's role in the Middle East. Suddenly in January 1947, Attlee reversed his position and agreed with Bevin on a hardline anti-Soviet policy.
+
+In an early "good-will" gesture that was later heavily criticised, the Attlee government allowed the Soviets to purchase, under the terms of a 1946 UK-USSR Trade agreement, a total of 25 Rolls-Royce Nene jet engines in September 1947 and March 1948. The agreement included an agreement not to use them for military purposes. The price was fixed under a commercial contract; a total of 55 jet engines were sold to the USSR in 1947. However, the Cold War intensified during this period and the Soviets, who at the time were well behind the West in jet technology, reverse-engineered the Nene and installed their own version in the MiG-15 interceptor. This was used to good effect against US-UK forces in the subsequent Korean War, as well as in several later MiG models.
+
+After Stalin took political control of most of Eastern Europe, and began to subvert other governments in the Balkans, Attlee's and Bevin's worst fears of Soviet intentions were realised. The Attlee government then became instrumental in the creation of the successful NATO defence alliance to protect Western Europe against any Soviet expansion. In a crucial contribution to the economic stability of post-war Europe, Attlee's Cabinet was instrumental in promoting the American Marshall Plan for the economic recovery of Europe. He called it one of the "most bold, enlightened and good-natured acts in the history of nations".
+
+A group of Labour MPs, organised under the banner of "Keep Left", urged the government to steer a middle way between the two emerging superpowers, and advocated the creation of a "third force" of European powers to stand between the US and USSR. However, deteriorating relations between Britain and the USSR, as well as Britain's economic reliance on America following the Marshall Plan, steered policy towards supporting the US. In January 1947, fear of both Soviet and American nuclear intentions led to a secret meeting of the Cabinet, where the decision was made to press ahead with the development of Britain's independent nuclear deterrent, an issue which later caused a split in the Labour Party. Britain's first successful nuclear test, however, did not occur until 1952, one year after Attlee had left office.
+
+The London dock strike of July 1949, led by Communists, was suppressed when the Attlee government sent in 13,000 Army troops and passed special legislation to promptly end the strike. His response reveals Attlee's growing concern that Soviet expansionism, supported by the British Communist Party, was a genuine threat to national security, and that the docks were highly vulnerable to sabotage ordered by Moscow. He noted that the strike was caused not by local grievances, but to help communist unions who were on strike in Canada. Attlee agreed with MI5 that he faced "a very present menace".
+
+Decolonisation
+Decolonisation was never a major election issue, but Attlee gave the matter a great deal of attention and was the chief leader in beginning the process of decolonisation of the British Empire.
+
+East Asia 
+In August 1948, the Chinese Communists' victories caused Attlee to begin preparing for a Communist takeover of China. It kept open consulates in Communist-controlled areas and rejected the Chinese Nationalists' requests that British citizens assist in the defence of Shanghai. By December, the government concluded that although British property in China would likely be nationalised, British traders would benefit in the long run from a stable, industrialising Communist China. Retaining Hong Kong was especially important to him; although the Chinese Communists promised to not interfere with its rule, Britain reinforced the Hong Kong Garrison during 1949. When the victorious Chinese Communists government declared on 1 October 1949 that it would exchange diplomats with any country that ended relations with the Chinese Nationalists, Britain became the first western country to formally recognise the People's Republic of China in January 1950. In 1954, a Labour Party delegation including Attlee visited China at the invitation of then Foreign Minister Zhou Enlai. Attlee became the first high-ranking western politician to meet Mao Zedong.
+
+South Asia 
+Attlee orchestrated the granting of independence to India and Pakistan in 1947. Attlee in 1928–1934 had been a member of the Indian Statutory Commission (otherwise known as the Simon Commission). He became the Labour Party expert on India and by 1934 was committed to granting India the same independent dominion status that Canada, Australia, New Zealand and South Africa had recently been given. He faced strong resistance from the die-hard Conservative imperialists, led by Churchill, who opposed both independence and efforts led by Prime Minister Stanley Baldwin to set up a system of limited local control by Indians themselves. Attlee and the Labour leadership were sympathetic to both the Congress led by Jawaharlal Nehru and the Pakistan movement led by Muhammad Ali Jinnah. During the Second World War, Attlee was in charge of Indian affairs. He set up the Cripps Mission in 1942, which tried and failed to bring the factions together. When Congress called for passive resistance in the Quit India movement of 1942–1945, it was the British regime ordered the widespread arrest and internment for the duration of tens of thousands of Congress leaders as part of its efforts to crush the revolt.
+
+Labour's election Manifesto in 1945 called for "the advancement of India to responsible self-government". In 1942 the British Raj tried to enlist all major political parties in support of the war effort. Congress, led by Nehru and Gandhi, demanded immediate independence and full control by Congress of all of India. That demand was rejected by the British, and Congress opposed the war effort with its "Quit India campaign". The Raj immediately responded in 1942 by imprisoning the major national, regional and local Congress leaders for the duration. Attlee did not object. By contrast, the Muslim League, led by Muhammad Ali Jinnah, strongly supported the war effort. They greatly enlarged their membership and won favour from London for their decision. Attlee retained a fondness for Congress and until 1946, accepted their thesis that they were a non-religious party that accepted Hindus, Muslims, Sikhs, and everyone else. Nevertheless, this difference in opinion between the Congress and the Muslim League towards the British war effort encouraged Attlee and his government to consider further negotiations with the Muslim League.
+
+The Muslim League insisted that it was the only true representative of all of the Muslims of India. With violence escalating in India after the war, but with British financial power at a low ebb, large-scale military involvement was impossible. Viceroy Wavell said he needed a further seven army divisions to prevent communal violence if independence negotiations failed. No divisions were available; independence was the only option. Given the increasing demands of the Muslim League, independence implied a partition that set off heavily Muslim Pakistan from the main portion of India. After becoming Prime Minister in 1945 Attlee originally planned to give India Dominion status in 1948.
+
+Attlee suggested in his memoirs that "traditional" colonial rule in Asia was no longer viable. He said that he expected it to meet renewed opposition after the war both by local national movements as well as by the United States. The prime minister's biographer John Bew says that Attlee hoped for a transition to a multilateral world order and a Commonwealth, and that the old British empire "should not be supported beyond its natural lifespan" and instead be ended "on the right note." His exchequer Hugh Dalton meanwhile feared that post-war Britain could no longer afford to garrison its empire. 
+
+Ultimately the Labour government gave full independence to India and Pakistan in 1947 through the Indian Independence Act. This involved creating a demarcation between the two regions which was known as the Radcliffe Line. The boundary between the newly created states of Pakistan and India involved the widespread resettlement of millions of Hindus, Sikhs and Muslims. Almost immediately, extreme anti-Hindu and anti-Sikh violence ensued in Lahore, Multan and Dacca when the Punjab province and the Bengal province were split in the Partition of India. This was followed by a rapid increase in widespread anti-Muslim violence in several areas including Amritsar, Rajkot, Jaipur, Calcutta and Delhi. Historian Yasmin Khan estimates that over a million people were killed of which several were women and children. Gandhi himself was assassinated in January 1948. Attlee remarked Gandhi as the "greatest citizen" of India and added, "this one man has been the major factor in every consideration of the Indian problem. He had become the expression of the aspirations of the Indian people for independence".
+
+Historian Andrew Roberts says the independence of India was a "national humiliation" but it was necessitated by urgent financial, administrative, strategic and political needs. Churchill in 1940–1945 had tightened the hold on India and imprisoned the Congress leadership, with Attlee's approval. Labour had looked forward to making it a fully independent dominion like Canada or Australia. Many of the Congress leaders in the India had studied in England, and were highly regarded as fellow idealistic socialists by Labour leaders. Attlee was the Labour expert on India and took special charge of decolonisation. Attlee found that Churchill's viceroy, Field Marshal Wavell, was too imperialistic, too keen on military solutions, and too neglectful of Indian political alignments. The new Viceroy was Lord Mountbatten, the dashing war hero and a cousin of the King. 
+
+Attlee also sponsored the peaceful transition to independence in 1948 of Burma (Myanmar) and Ceylon (Sri Lanka).
+
+Palestine 
+
+One of the most urgent problems facing Attlee concerned the future of the British mandate in Palestine, which had become too troublesome and expensive to handle. British policies in Palestine were perceived by the Zionist movement and the Truman administration to be pro-Arab and anti-Jewish, and Britain soon found itself unable to maintain public order in the face of a Jewish insurgency and a civil war.
+
+During this period, 70,000 Holocaust survivors attempted to reach Palestine as part of the Aliyah Bet refugee movement. Attlee's government tried several tactics to prevent the migration. Five ships were bombed by the Secret Intelligence Service (though with no casualties) with a fake Palestinian group created to take responsibility. The navy apprehended over 50,000 refugees en route, interning them in detention camps in Cyprus. Conditions in the camps were harsh and faced global criticism. Later, the refugee ship Exodus 1947 would be sent back to mainland Europe, instead of being taken to Cyprus.
+
+In response to the increasingly unpopular mandate, Attlee ordered the evacuation of all British military personnel and handed over the issue to the United Nations, a decision which was widely supported by the general public in Britain. With the establishment of the state of Israel in 1948, the camps in Cyprus were eventually closed, with their former occupants finally completing their journey to the new country.
+
+Africa 
+The government's policies with regard to the other colonies, particularly those in Africa, focused on keeping them as strategic Cold War assets while modernising their economies. The Labour Party had long attracted aspiring leaders from Africa and had developed elaborate plans before the war. Implementing them overnight with an empty treasury proved too challenging. A major military base was built in Kenya, and the African colonies came under an unprecedented degree of direct control from London. Development schemes were implemented to help solve Britain's post-war balance of payments crisis and raise African living standards. This "new colonialism" worked slowly, and had failures such as the Tanganyika groundnut scheme.
+
+Elections
+The 1950 election gave Labour a massively reduced majority of five seats compared to the triple-digit majority of 1945. Although re-elected, the result was seen by Attlee as very disappointing, and was widely attributed to the effects of post-war austerity denting Labour's appeal to middle-class voters. With such a small majority leaving him dependent on a small number of MPs to govern, Attlee's second term was much tamer than his first. Some major reforms were nevertheless passed, particularly regarding industry in urban areas and regulations to limit air and water pollution.
+
+By 1951, the Attlee government was exhausted, with several of its most senior ministers ailing or ageing, and with a lack of new ideas. Attlee's record for settling internal differences in the Labour Party fell in April 1951, when there was a damaging split over an austerity Budget brought in by the Chancellor, Hugh Gaitskell, to pay for the cost of Britain's participation in the Korean War. Aneurin Bevan resigned to protest against the new charges for "teeth and spectacles" in the National Health Service introduced by that Budget, and was joined in this action by several senior ministers, including the future Prime Minister Harold Wilson, then the President of the Board of Trade. Thus escalated a battle between the left and right wings of the Party that continues today. Finding it increasingly impossible to govern, Attlee's only chance was to call a snap election in October 1951, in the hope of achieving a more workable majority and to regain authority. The gamble failed: Labour narrowly lost to the Conservative Party, despite winning considerably more votes (achieving the largest Labour vote in electoral history). Attlee tendered his resignation as Prime Minister the following day, after six years and three months in office.
+
+Return to opposition
+Following the defeat in 1951, Attlee continued to lead the party as Leader of the Opposition. His last four years as leader were, however, widely seen as one of the Labour Party's weaker periods.
+
+The period was dominated by infighting between the Labour Party's right wing, led by Hugh Gaitskell, and its left, led by Aneurin Bevan. Many Labour MPs felt that Attlee should have retired following 1951 election and allowed a younger man to lead the party. Bevan openly called for him to stand down in the summer of 1954. One of his main reasons for staying on as leader was to frustrate the leadership ambitions of Herbert Morrison, whom Attlee disliked for both political and personal reasons. At one time, Attlee had favoured Aneurin Bevan to succeed him as leader, but this became problematic after Bevan almost irrevocably split the party.
+
+Attlee, now aged 72, contested the 1955 general election against Anthony Eden, which saw Labour lose 18 seats, and the Conservatives increase their majority.
+
+In an interview with the News Chronicle columnist Percy Cudlipp in mid-September 1955, Attlee made clear his own thinking together with his preference for the leadership succession, stating:
+
+He retired as Leader of the Labour Party on 7 December 1955, having led the party for twenty years, and on 14 December Hugh Gaitskell was elected as his successor.
+
+Global policy 
+He was one of the signatories of the agreement to convene a convention for drafting a world constitution. As a result, for the first time in human history, a World Constituent Assembly convened to draft and adopt a Constitution for the Federation of Earth.
+
+Retirement
+
+He subsequently retired from the House of Commons and was elevated to the peerage as Earl Attlee and Viscount Prestwood on 16 December 1955, taking his seat in the House of Lords on 25 January. He believed Eden had been forced into taking a strong stand on the Suez Crisis by his backbenchers. In 1958, Attlee, along with numerous notables, established the Homosexual Law Reform Society: this campaigned for the decriminalisation of homosexual acts in private by consenting adults, a reform that was voted through Parliament nine years later. In May 1961, he travelled to Washington, D.C., to meet with President Kennedy.
+
+In 1962, he spoke twice in the House of Lords against the British government's application for the UK to join the European Communities ("Common Market"). In his second speech delivered in November, Attlee claimed that Britain had a separate parliamentary tradition from the Continental European countries that comprised the EC. He also claimed that if Britain became a member, EC rules would prevent the British government from planning the economy and that Britain's traditional policy had been outward-looking rather than Continental.
+
+He attended Winston Churchill's funeral in January 1965. He was frail by that time, and had to remain seated in the freezing cold as the coffin was carried, having tired himself out by standing at the rehearsal the previous day. He lived to see the Labour Party return to power under Harold Wilson in 1964, and also to see his old constituency of Walthamstow West fall to the Conservatives in a by-election in September 1967.
+
+Death
+Attlee died peacefully in his sleep of pneumonia, at the age of 84 at Westminster Hospital on 8 October 1967. Two thousand people attended his funeral in November, including the then-Prime Minister Harold Wilson and the Duke of Kent, representing the Queen. He was cremated and his ashes were buried at Westminster Abbey.
+
+Upon his death, the title passed to his son Martin Richard Attlee, 2nd Earl Attlee (1927–1991), who defected from Labour to the SDP in 1981. It is now held by Clement Attlee's grandson John Richard Attlee, 3rd Earl Attlee. The third earl (a member of the Conservative Party) retained his seat in the Lords as one of the hereditary peers to remain under an amendment to Labour's House of Lords Act 1999.
+
+Attlee's estate was sworn for probate purposes at a value of £7,295, (equivalent to £ in ) a relatively modest sum for so prominent a figure, and only a fraction of the £75,394 in his father's estate when he died in 1908.
+
+Legacy
+
+The quotation about Attlee, "A modest man, but then he has so much to be modest about", is commonly ascribed to Churchill—though Churchill denied saying it, and respected Attlee's service in the War cabinet. Attlee's modesty and quiet manner hid a great deal that has only come to light with historical reappraisal. Attlee himself is said to have responded to critics with a limerick: "There were few who thought him a starter, Many who thought themselves smarter. But he ended PM, CH and OM, an Earl and a Knight of the Garter".
+
+The journalist and broadcaster Anthony Howard called him "the greatest Prime Minister of the 20th century".
+
+His leadership style of consensual government, acting as a chairman rather than a president, won him much praise from historians and politicians alike. Christopher Soames, the British Ambassador to France during the Conservative government of Edward Heath and cabinet minister under Margaret Thatcher, remarked that "Mrs Thatcher was not really running a team. Every time you have a Prime Minister who wants to make all the decisions, it mainly leads to bad results. Attlee didn't. That's why he was so damn good".
+
+Thatcher herself wrote in her 1995 memoirs, which charted her life from her beginnings in Grantham to her victory at the 1979 general election, that she admired Attlee, writing: "Of Clement Attlee, however, I was an admirer. He was a serious man and a patriot. Quite contrary to the general tendency of politicians in the 1990s, he was all substance and no show".
+
+Attlee's government presided over the successful transition from a wartime economy to peacetime, tackling problems of demobilisation, shortages of foreign currency, and adverse deficits in trade balances and government expenditure. Further domestic policies that he brought about included the creation of the National Health Service and the post-war Welfare state, which became key to the reconstruction of post-war Britain. Attlee and his ministers did much to transform the UK into a more prosperous and egalitarian society during their time in office with reductions in poverty and a rise in the general economic security of the population.
+
+In foreign affairs, he did much to assist with the post-war economic recovery of Europe. He proved a loyal ally of the US at the onset of the Cold War. Due to his style of leadership, it was not he, but Ernest Bevin who masterminded foreign policy. It was Attlee's government that decided Britain should have an independent nuclear weapons programme, and work on it began in 1947.
+
+Bevin, Attlee's Foreign Secretary, famously stated that "We've got to have it [nuclear weapons] and it's got to have a bloody Union Jack on it". The first operational British nuclear bomb was not detonated until October 1952, about one year after Attlee had left office. Independent British atomic research was prompted partly by the US McMahon Act, which nullified wartime expectations of postwar US–UK collaboration in nuclear research, and prohibited Americans from communicating nuclear technology even to allied countries. British atomic bomb research was kept secret even from some members of Attlee's own cabinet, whose loyalty or discretion seemed uncertain.
+
+Although a socialist, Attlee still believed in the British Empire of his youth. He thought of it as an institution that was a power for good in the world. Nevertheless, he saw that a large part of it needed to be self-governing. Using the Dominions of Canada, Australia, and New Zealand as a model, he continued the transformation of the empire into the modern-day British Commonwealth.
+
+His greatest achievement, surpassing many of these, was perhaps the establishment of a political and economic consensus about the governance of Britain that all three major parties subscribed to for three decades, fixing the arena of political discourse until the late-1970s. In 2004, he was voted the most successful British Prime Minister of the 20th century by a poll of 139 academics organised by Ipsos MORI.
+
+A blue plaque unveiled in 1979 commemorates Attlee at 17 Monkhams Avenue, in Woodford Green in the London borough of Redbridge.
+
+Attlee was elected a Fellow of the Royal Society in 1947. Attlee was awarded an Honorary Fellowship of Queen Mary College on 15 December 1948.
+
+In the 1960s a new suburb near Curepipe in British Mauritius was given the name Cité Atlee in his honour.
+
+Statues 
+
+On 30 November 1988, a bronze statue of Clement Attlee was unveiled by Harold Wilson (the next Labour Prime Minister after Attlee) outside Limehouse Library in Attlee's former constituency. By then Wilson was the last surviving member of Attlee's cabinet, and the unveiling of the statue would be one of the last public appearances by Wilson, who was by that point in the early stages of Alzheimer's disease; he died at the age of 79 in May 1995.
+
+Limehouse Library was closed in 2003, after which the statue was vandalised. The council surrounded it with protective hoarding for four years, before eventually removing it for repair and recasting in 2009. The restored statue was unveiled by Peter Mandelson in April 2011, in its new position less than a mile away at the Queen Mary University of London's Mile End campus.
+
+There is also a statue of Clement Attlee in the Houses of Parliament that was erected, instead of a bust, by parliamentary vote in 1979. The sculptor was Ivor Roberts-Jones.
+
+Cultural depictions
+
+Personal life
+Attlee met Violet Millar while on a long trip with friends to Italy in 1921. They fell in love and were soon engaged, marrying at Christ Church, Hampstead, on 10 January 1922. It would come to be a devoted marriage, with Attlee providing protection and Violet providing a home that was an escape for Attlee from political turmoil. She died in 1964. They had four children:
+ Lady Janet Helen (1923–2019), she married the scientist Harold Shipton (1920–2007) at Ellesborough Parish Church in 1947.
+ Lady Felicity Ann (1925–2007), married the business executive John Keith Harwood (1926–1989) at Little Hampden in 1955
+ Martin Richard, Viscount Prestwood, later 2nd Earl Attlee (1927–1991), married Anne Henderson on 16 February 1955.
+ Lady Alison Elizabeth (1930–2016), married Richard Davis at Great Missenden in 1952.
+
+Religious views 
+Although his parents were devout Anglicans, with one of his brothers becoming a clergyman and one of his sisters a missionary, Attlee himself is usually regarded as an agnostic. In an interview he described himself as "incapable of religious feeling", saying that he believed in "the ethics of Christianity" but not "the mumbo-jumbo". When asked whether he was an agnostic, Attlee replied "I don't know".
+
+Honours and arms
+
+See also
+Briggs Plan
+Ethical socialism
+Information Research Department
+Malayan Emergency
+New village
+Postwar Britain
+
+References
+
+Citations
+
+Notes
+
+Bibliography
+
+Further reading
+Biographical
+
+ Beckett, Francis. Clem Attlee (1998) – updated and revised and expanded edition, Clem Attlee: Labour's Great Reformer (2015)
+ Bew, John. Citizen Clem: A Biography of Attlee, (London: 2016, British edition); Clement Attlee: The Man Who Made Modern Britain (New York: Oxford University Press, 2017, U.S. edition)
+ Burridge, Trevor. Clement Attlee: A Political Biography (1985), scholarly
+ Cohen, David. Churchill & Attlee: The Unlikely Allies who Won the War (Biteback Publishing, 2018), popular
+ Crowcroft, Robert. Attlee's War: World War II and the Making of a Labour Leader (IB Tauris, 2011)
+ Harris, Kenneth. Attlee (1982), scholarly authorised biography
+ Howell, David. Attlee (2006)
+ Jago, Michael. Clement Attlee: The Inevitable Prime Minister (2014)
+ Pearce, Robert. Attlee (1997), 206pp
+ Thomas-Symonds, Nicklaus. Attlee: A Life in Politics (IB Tauris, 2010).
+ Whiting, R. C. "Attlee, Clement Richard, first Earl Attlee (1883–1967)", Oxford Dictionary of National Biography, 2004; online edn, Jan 2011 accessed 12 June 2013 doi:10.1093/ref:odnb/30498
+
+Biographies of his cabinet and associates
+
+ Rosen, Greg. ed. Dictionary of Labour Biography. (Politicos Publishing, 2002); 
+ Morgan, Kenneth O. Labour people: Leaders and Lieutenants, Hardie to Kinnock (1987)
+
+Scholarly studies
+
+ Addison, Paul. No Turning Back: The Peaceful Revolutions of Post-War Britain (2011) excerpt and text search
+ , detailed coverage of nationalisation, welfare state and planning.
+ Crowcroft, Robert, and Kevin Theakston. "The Fall of the Attlee Government, 1951", in Timothy Heppell and Kevin Theakston, eds. How Labour Governments Fall (Palgrave Macmillan UK, 2013). PP 61–82.
+ Francis, Martin. Ideas and policies under Labour, 1945–1951: building a new Britain (Manchester University Press, 1997).
+ Golant, W. "The Emergence of CR Attlee as Leader of the Parliamentary Labour Party in 1935", Historical Journal, 13#2 (1970): 318–332. in JSTOR
+ 
+ Jackson, Ben. "Citizen and Subject: Clement Attlee's Socialism", History Workshop Journal (2018). Vol. 86 pp 291–298. online.
+ Jeffreys, Kevin. "The Attlee Years, 1935–1955", in Brivati, Brian, and Heffernan, Richard, eds., The Labour Party: A Centenary History, Palgrave Macmillan UK, 2000. 68–86.
+ Kynaston, David. Austerity Britain, 1945–1951 (2008).
+ Mioni, Michele. "The Attlee government and welfare state reforms in post-war Italian Socialism (1945–51): Between universalism and class policies", Labor History, 57#2 (2016): 277–297. DOI:10.1080/0023656X.2015.1116811
+ Morgan, Kenneth O. Labour in Power 1945–1951 (1984), 564 pp.
+ Ovendale, R. ed., The foreign policy of the British Labour governments, 1945–51 (1984) ·
+ Pugh, Martin. Speak for Britain!: A New History of the Labour Party (2011) excerpt and text search
+ 
+ Swift, John. Labour in Crisis: Clement Attlee & the Labour Party in Opposition, 1931–1940 (2001)
+ Tomlinson, Jim. Democratic Socialism and Economic Policy: The Attlee Years, 1945–1951 (2002) Excerpt and text search
+ Weiler, Peter. "British Labour and the cold war: the foreign policy of the Labour governments, 1945–1951", Journal of British Studies, 26#1 (1987): 54–82. in JSTOR
+
+Works 
+
+ Clement Attlee published his memoirs, As it Happened, in 1954.
+ Francis Williams' A Prime Minister Remembers, based on interviews with Attlee, was published in 1961.
+
+Attlee's other publications
+
+ The Social Worker (1920)
+ Metropolitan Borough Councils Their Constitution, Powers and Duties – Fabian Tract No 190 (1920)
+ The Town Councillor (1925)
+ The Will and the Way to Socialism (1935)
+ The Labour Party in Perspective (1937)
+ Collective Security Under the United Nations (1958)
+ Empire into Commonwealth (1961)
+
+External links
+
+ 
+Clement Attlee – Thanksgiving Speech 1950 – UK Parliament Living Heritage
+ More about Clement Attlee on the Downing Street website.
+ 
+ 
+ 
+ 
+ Annotated bibliography for Clement Attlee from the Alsos Digital Library for Nuclear Issues
+ 
+ 
+Drawing of Clement Attlee in the UK Parliamentary Collections
+
+ 
+1883 births
+1967 deaths
+20th-century English politicians
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+Gaius Valerius Catullus (;  84 -  54 BCE), often referred to simply as Catullus (), was a Latin poet of the late Roman Republic who wrote chiefly in the neoteric style of poetry, focusing on personal life rather than classical heroes. His surviving works are still read widely and continue to influence poetry and other forms of art.
+
+Catullus's poems were widely appreciated by contemporary poets, significantly influencing Ovid and Virgil, among others. After his rediscovery in the Late Middle Ages, Catullus again found admirers such as Petrarch. The explicit sexual imagery which he uses in some of his poems has shocked many readers. Yet, at many instruction levels, Catullus is considered a resource for teachers of Latin.
+
+Catullus's style is highly personal, humorous, and emotional; he frequently uses hyperbole, anaphora, alliteration, and diminutives. In 25 of his poems, he mentions his devotion to a woman he refers to as "Lesbia", who is widely believed to have been the Roman aristocrat Clodia Metelli. One of the most famous of his poems is his 5th, which is often recognized for its passionate language and opening line: "" ("Let us live, my Lesbia, and let us love").
+
+Life
+Gāius Valerius Catullus was born to a leading equestrian family of Verona, in Cisalpine Gaul. The social prominence of the Catullus family allowed the father of Gaius Valerius to entertain Julius Caesar when he was the Promagistrate (proconsul) of both Gallic provinces. In a poem, Catullus describes his happy homecoming to the family villa at Sirmio, on Lake Garda, near Verona; he also owned a villa near the resort of Tibur (modern Tivoli).
+
+Catullus appears to have spent most of his young adult years in Rome. His friends there included the poets Licinius Calvus, and Helvius Cinna, Quintus Hortensius (son of the orator and rival of Cicero) and the biographer Cornelius Nepos, to whom Catullus dedicated a libellus of poems, the relation of which to the extant collection remains a matter of debate. He appears to have been acquainted with the poet Marcus Furius Bibaculus. A number of prominent contemporaries appear in his poetry, including Cicero, Caesar and Pompey. According to an anecdote preserved by Suetonius, Caesar did not deny that Catullus's lampoons left an indelible stain on his reputation, but when Catullus apologized, he invited the poet for dinner the very same day.
+
+It was probably in Rome that Catullus fell deeply in love with the "Lesbia" of his poems, who is usually identified with Clodia Metelli, a sophisticated woman from the aristocratic house of patrician family Claudii Pulchri, sister of the infamous Publius Clodius Pulcher, and wife to proconsul Quintus Caecilius Metellus Celer. In his poems Catullus describes several stages of their relationship: initial euphoria, doubts, separation, and his wrenching feelings of loss. Clodia had several other partners; "From the poems one can adduce no fewer than five lovers in addition to Catullus: Egnatius (poem 37), Gellius (poem 91), Quintius (poem 82), Rufus (poem 77), and Lesbius (poem 79)." There is also some question surrounding her husband's mysterious death in 59 BCE, with some critics believing he was domestically poisoned. However, a sensitive and passionate Catullus could not relinquish his flame for Clodia, regardless of her obvious indifference to his desire for a deep and permanent relationship. In his poems, Catullus wavers between devout, sweltering love and bitter, scornful insults that he directs at her blatant infidelity (as demonstrated in poems 11 and 58). His passion for her is unrelenting—yet it is unclear when exactly the couple split up for good. Catullus's poems about the relationship display striking depth and psychological insight.
+
+He spent the provincial command year from summer 57 to summer 56 BCE in Bithynia on the staff of the commander Gaius Memmius. While in the East, he traveled to the Troad to perform rites at his brother's tomb, an event recorded in a moving poem.
+
+No ancient biography of Catullus has survived. His life has to be pieced together from scattered references to him in other ancient authors and from his poems. Thus it is uncertain when he was born and when he died. Jerome stated that he was born in 87 BCE and died in Rome on his 30th year. However, Catullus’ poems include references to events of 55 and 54 BCE. Since the Roman consular fasti make it somewhat easy to confuse 87–57 BCE with 84–54 BCE, many scholars accept the dates 84 BC–54 BCE, supposing that his latest poems and the publication of his libellus coincided with the year of his death. Other authors suggest 52 or 51 BCE as the year of the poet's death. Though upon his elder brother's death Catullus lamented that their "whole house was buried along" with the deceased, the existence (and prominence) of Valerii Catulli is attested in the following centuries. T.P. Wiseman argues that after the brother's death Catullus could have married, and that, in this case, the later Valerii Catulli may have been his descendants.
+
+Poetry
+
+Sources and organization
+Catullus's poems have been preserved in an anthology of 116 carmina (the actual number of poems may slightly vary in various editions), which can be divided into three parts according to their form: sixty short poems in varying meters, called polymetra, eight longer poems, and forty-eight epigrams.
+
+There is no scholarly consensus on whether Catullus himself arranged the order of the poems. The longer poems differ from the polymetra and the epigrams not only in length but also in their subjects: There are seven hymns and one mini-epic, or epyllion, the most highly prized form for the "new poets".
+
+The polymetra and the epigrams can be divided into four major thematic groups (ignoring a rather large number of poems that elude such categorization):
+
+ poems to and about his friends (e.g., an invitation like poem 13).
+ erotic poems: some of them (eg. (50, 9, 99) etc. are about his attraction toward other men, but others are about women, especially about one he calls "Lesbia" (which served as a false name for his married girlfriend, Clodia, source and inspiration of many of his poems). In modern terms, he would likely be called bisexual, though the Romans had no labels such as this.
+ invectives: often rude and sometimes downright obscene poems targeted at friends-turned-traitors (e.g., poem 16), other lovers of Lesbia, well-known poets, politicians (e.g., Julius Caesar) and rhetors, including Cicero.
+ condolences: some poems of Catullus are solemn in nature. 96 comforts a friend in the death of a loved one; several others, most famously 101, lament the death of his brother.
+
+All these poems describe the lifestyle of Catullus and his friends, who, despite Catullus's temporary political post in Bithynia, lived their lives withdrawn from politics. They were interested mainly in poetry and love. Above all other qualities, Catullus seems to have valued venustas, or charm, in his acquaintances, a theme which he explores in a number of his poems. The ancient Roman concept of virtus (i.e., of virtue that had to be proved by a political or military career), which Cicero suggested as the solution to the societal problems of the late Republic, meant little to them.
+
+However Catullus does not reject traditional notions, but rather their particular application to the vita activa of politics and war. Indeed, he tries to reinvent these notions from a personal point of view and to introduce them into human relationships. For example, he applies the word fides, which traditionally meant faithfulness towards one's political allies, to his relationship with Lesbia and reinterprets it as unconditional faithfulness in love. So, despite the seeming frivolity of his lifestyle, Catullus measured himself and his friends by quite ambitious standards.
+
+Intellectual influences
+
+Catullus's poetry was influenced by the innovative poetry of the Hellenistic Age, and especially by Callimachus and the Alexandrian school, which had propagated a new style of poetry that deliberately turned away from the classical epic poetry in the tradition of Homer. Cicero called these local innovators neoteroi () or "moderns" (in Latin poetae novi or 'new poets'), in that they cast off the heroic model handed down from Ennius in order to strike new ground and ring a contemporary note. Catullus and Callimachus did not describe the feats of ancient heroes and gods (except perhaps in re-evaluating and predominantly artistic circumstances, e.g. poems 63 and 64), focusing instead on small-scale personal themes. Although these poems sometimes seem quite superficial and their subjects often are mere everyday concerns, they are accomplished works of art. Catullus described his work as expolitum, or polished, to show that the language he used was very carefully and artistically composed.
+
+Catullus was also an admirer of Sappho, a female poet of the seventh century BCE. Catullus 51 partly translates, partly imitates, and transforms Sappho 31.  Some hypothesize that 61 and 62 were perhaps inspired by lost works of Sappho but this is purely speculative. Both of the latter are epithalamia, a form of laudatory or erotic wedding-poetry that Sappho was famous for. Catullus twice used a meter that Sappho was known for, called the Sapphic stanza, in poems 11 and 51, perhaps prompting his successor Horace's interest in the form.
+
+Catullus, as was common to his era, was greatly influenced by stories from Greek and Roman myth. His longer poems—such as 63, 64, 65, 66, and 68—allude to mythology in various ways. Some stories he refers to are the wedding of Peleus and Thetis, the departure of the Argonauts, Theseus and the Minotaur, Ariadne's abandonment, Tereus and Procne, as well as Protesilaus and Laodamia.
+
+Style
+Catullus wrote in many different meters including hendecasyllabic verse and elegiac couplets (common in love poetry). A great part of his poetry shows strong and occasionally wild emotions, especially in regard to Lesbia (e.g., poems 5 and 7). His love poems are very emotional and ardent, and are relatable to this day. Catullus describes his Lesbia as having multiple suitors and often showing little affection towards him. He also demonstrates a great sense of humour such as in Catullus 13.
+
+Musical settings
+
+The Hungarian born British composer Matyas Seiber set poem 31 for unaccompanied mixed chorus Sirmio in 1957. The American composer Ned Rorem set Catullus 101 to music for voice and piano; the song, "Catallus: On the Burial of His Brother", was originally published in 1969.
+
+Catullus Dreams (2011) is a song cycle by David Glaser set to texts of Catullus, scored for soprano and seven instruments; it premiered at Symphony Space in New York by soprano Linda Larson and Sequitur Ensemble. "Carmina Catulli" is a song cycle arranged from 17 of Catullus's poems by American composer Michael Linton. The cycle was recorded in December 2013 and premiered at Carnegie Hall's Weill Recital Hall in March 2014 by French baritone Edwin Crossley-Mercer and pianist Jason Paul Peterson.
+
+Thomas Campion also wrote a lute-song using his own translation of the first six lines of Catullus 5 followed by two verses of his own; the translation by Richard Crashaw was set to music in a four-part glee by Samuel Webbe Jr. It was also set to music, in a three-part glee by John Stafford Smith. 
+
+Catullus 5, the love poem "Vivamus mea Lesbia atque amemus", in the translation by Ben Jonson, was set to music, (lute accompanied song) by Alfonso Ferrabosco the younger. Dutch composer Bertha Tideman-Wijers used Catullus's text for her composition Variations on Valerius "Where that one already turns or turns." The Icelandic composer Jóhann Jóhannsson set Catullus 85 to music; entitled "Odi Et Amo", the song is found on Jóhannsson's album Englabörn, and is sung through a vocoder, and the music is played by a string quartet and piano. Catulli Carmina is a cantata by Carl Orff set to the texts of Catullus. Finnish jazz singer Reine Rimón has recorded poems of Catullus set to standard jazz tunes.
+
+Cultural depictions
+ The 1888 play Lesbia by Richard Davey depicts the relationship between Catullus and Lesbia, based on incidents from his poems.
+ Catullus was the main protagonist of the historical novel Farewell, Catullus (1953) by Pierson Dixon. The novel shows the corruption of Roman society.
+Vladimir Nabokov's Novel Lolita makes multiple explicit and implicit allusions to Catullus' work. 
+W. G. Hardy's novel The City of Libertines (1957) tells the fictionalized story of Catullus and a love affair during the time of Julius Caesar. The Financial Post described the book as "an authentic story of an absorbing era".
+ A poem by Catullus is being recited to Cleopatra in the eponymous 1963 film when Julius Caesar comes to visit her; they talk about him (Cleopatra: 'Catullus doesn't approve of you. Why haven't you had him killed?' Caesar: 'Because I approve of him.') and Caesar then recites other poems by him.
+The American poet Louis Zukofsky in 1969 wrote a set of homophonic translations of Catullus that attempted in English to replicate the sound as primary emphasis, rather than the more common emphasis on sense of the originals (although the relationship between sound and sense there is often misrepresented and has been clarified by careful study); his Catullus versions have had extensive influence on contemporary innovative poetry and homophonic translation, including the work of poets Robert Duncan, Robert Kelly, and Charles Bernstein.
+Catullus is the protagonist of Tom Holland's 1995 novel Attis.
+Catullus appears in Steven Saylor's novel The Venus Throw as the embittered ex lover of Clodia, sister of Publius Clodius Pulcher, whom he calls Lesbia.
+
+See also
+Codex Vaticanus Ottobonianus Latinus 1829
+Poetry of Catullus
+Prosody (Latin)
+
+References
+
+Further reading
+
+ Calinski, T. (2021). . Darmstadt: WBG Academic
+ Claes, P. (2002). Concatenatio Catulliana, A New Reading of the Carmina. Amsterdam: J.C. Gieben 
+
+ 
+
+ 
+ 
+ 
+
+ 
+ 
+
+ 
+
+ 
+ Hild, Christian (2013). . St. Ingbert:      Röhrig. .
+ 
+Kaggelaris, N. (2015), "Wedding Cry: Sappho (Fr. 109 LP, Fr. 104(a) LP)- Catullus (c. 62. 20-5)- modern greek folk songs" [in Greek] in Avdikos, E.- Koziou-Kolofotia, B. (ed.) Modern Greek folk songs and history, Karditsa, pp. 260–70 
+
+ 
+ 
+ 
+
+ 
+
+ 
+
+ Radici Colace, P., , 1985, pp. 53–71.
+ Radici Colace, P., , 1987, 39-57.
+ Radici Colace, P., , Reggio Calabria 1989, 137-142.
+ Radici Colace, P., , in AA.VV., , Pisa 1992,  1-13.
+ Radici Colace, P., , Messana n.s.15, 1993,  23-44.
+ Radici Colace, P., , (Napoli 9 maggio 1995) ―A.I.O.N.‖ XVIII, 1996,  155-167.
+ Radici Colace, P., , in ―Paideia‖ LXIV, 2009, 553-561
+
+External links
+
+ Works by Catullus at Perseus Digital Library
+ 
+ 
+ 
+ Catullus translations: Catullus's work in Latin and multiple (ten or more) modern languages, including scanned versions of every poem
+ Catullus in Latin and English
+ Catullus translated exclusively in English Translated by A. S. Kline
+ Catullus Online: searchable Latin text, repertory of conjectures, and images of the most important manuscripts
+ Catullus: Latin text, concordances and frequency list
+ Catullus purified: a brief history of Carmen 16 by Thomas Nelson Winter
+ SORGLL:  Catullus 5, read by Robert Sonkowsky
+
+ 
+1st-century BC Romans
+1st-century BC Roman poets
+Elegiac poets
+Golden Age Latin writers
+Iambic poets
+80s BC births
+54 BC deaths
+Writers from Verona
+Bisexual male writers
+Bisexual poets
+Italian bisexual people
+Italian LGBT poets
+LGBT history in Italy
+Valerii
+Ancient Roman LGBT people
+Cecil Louis Troughton Smith (27 August 1899 – 2 April 1966), known by his pen name Cecil Scott "C. S." Forester, was an English novelist known for writing tales of naval warfare, such as the 12-book Horatio Hornblower series depicting a Royal Navy officer during the Napoleonic Wars. The Hornblower novels A Ship of the Line and Flying Colours were jointly awarded the James Tait Black Memorial Prize for fiction in 1938.  His other works include The African Queen (1935; turned into a 1951 film by John Huston) and The Good Shepherd (1955; turned into a 2020 film, Greyhound, adapted by and starring Tom Hanks).
+
+Early years
+Forester was born in Cairo.  After the family broke up when he was still at an early age his mother took him with her to London, where he was educated at Alleyn's School and Dulwich College. He began to study medicine at Guy's Hospital, but left without completing his degree. He was of good height and somewhat athletic, but wore glasses and had a slender physique, so he failed his Army physical and was told that there was no chance that he would be accepted. He began writing seriously, using his pen name, in around 1921.
+
+Second World War
+During the Second World War Forester moved to the United States, where he worked for the British Ministry of Information and wrote propaganda to encourage the U.S. to join the Allies. He eventually settled in Berkeley, California.
+
+In 1942, while he was living in Washington, D.C., he met Roald Dahl and encouraged him to write about his experiences in the RAF. According to Dahl's autobiography,  Lucky Break, Forester asked him about his experiences as a fighter pilot, and this prompted Dahl to write his first story, "A Piece of Cake".
+
+Literary career
+
+Forester wrote many novels, but he is best known for the 12-book Horatio Hornblower series about an officer in the Royal Navy during the Napoleonic Wars. He began the series with Hornblower fairly high in rank in the first novel, which was published in 1937, but demand for more stories led him to fill in Hornblower's life story, and he wrote novels detailing his rise from the rank of midshipman. The last completed novel was published in 1962. Hornblower's fictional adventures were based on real events, but Forester wrote the body of the works carefully to avoid entanglements with real world history, so that Hornblower is always off on another mission when a great naval battle occurs during the Napoleonic Wars.
+
+Forester's other novels include The African Queen (1935) and The General (1936); two novels about the Peninsular War, Death to the French (published in the United States as Rifleman Dodd) and The Gun (filmed as The Pride and the Passion in 1957); and seafaring stories that do not involve Hornblower, such as Brown on Resolution (1929), The Captain from Connecticut (1941), The Ship (1943), and Hunting the Bismarck (1959), which was used as the basis of the screenplay for the film Sink the Bismarck! (1960). Several of his novels have been filmed, including The African Queen (1951), directed by John Huston. Forester is also credited as story writer on several films not based on his published novels, including Commandos Strike at Dawn (1942).
+
+Forester also wrote several volumes of short stories set during the Second World War. Those in The Nightmare (1954) were based on events in Nazi Germany, ending at the Nuremberg trials. The linked stories in The Man in the Yellow Raft (1969) follow the career of the destroyer USS Boon, while many of the stories in Gold from Crete (1971) follow the destroyer HMS Apache. The last of the stories in Gold from Crete is If Hitler Had Invaded England, which offers an imagined sequence of events starting with Hitler's attempt to implement Operation Sea Lion and culminating in the early military defeat of Nazi Germany in the summer of 1941.
+
+His non-fiction works about seafaring include The Age of Fighting Sail (1956), an account of the sea battles between Great Britain and the United States in the War of 1812.
+
+Forester also published the crime novels Payment Deferred (1926) and Plain Murder (1930), as well as two children's books. Poo-Poo and the Dragons (1942) was created as a series of stories told to his son George to encourage him to finish his meals. George had mild food allergies and needed encouragement to eat. The Barbary Pirates (1953) is a children's history of early 19th-century pirates.
+
+Forester appeared as a contestant on the television quiz programme You Bet Your Life, hosted by Groucho Marx, in an episode broadcast on 1 November 1956.
+
+A previously unknown novel of Forester's, The Pursued, was discovered in 2003 and published by Penguin Classics on 3 November 2011.
+
+Personal life 
+Forester married Kathleen Belcher in 1926. They had two sons, John, born in 1929, and George, born in 1933. The couple divorced in 1945. In 1947 he married Dorothy Foster. Kathleen Belcher’s great uncle was Capt. Edward Belcher, RN, who achieved renown as a hydrographer and explorer. After his retirement, Belcher devoted much of his time to writing. After penning biographical material, he turned his hand to naval fiction, inventing a character called Horatio Howard Brenton, and attributing great feats and adventures to him. It is possible that Forester found some inspiration in these stories for his own Horatio Hornblower.
+
+Forester died in Fullerton, California on 2 April 1966.
+
+John Forester wrote a two-volume biography of his father, including many elements of Forester's life which became clear to his son only after his father's death.
+
+Bibliography
+
+Horatio Hornblower
+ 1950 Mr Midshipman Hornblower. Michael Joseph.
+ 1941 "The Hand of Destiny".Collier's
+ 1950 "Hornblower and the Widow McCool" ("Hornblower’s Temptation" ""Hornblower and the Big Decision"). The Saturday Evening Post
+ 1952 Lieutenant Hornblower. Michael Joseph.
+ 1962 Hornblower and the Hotspur. Michael Joseph.
+ 1967 Hornblower and the Crisis, an unfinished novel. Michael Joseph. Published in the US as Hornblower During the Crisis (posthumous)
+ 1953 Hornblower and the Atropos. Michael Joseph.
+ 1937 The Happy Return. Michael Joseph. Published in the US as Beat to Quarters
+ 1938 A Ship of the Line. Michael Joseph.
+ 1941 "Hornblower's Charitable Offering". Argosy
+ 1938  Flying Colours. Michael Joseph.
+ 1941 "Hornblower and His Majesty". Collier's
+ 1945 The Commodore. Michael Joseph. Published in the US as Commodore Hornblower
+ 1946 Lord Hornblower. Michael Joseph.
+ 1958 Hornblower in the West Indies. Michael Joseph. Published in the US as Admiral Hornblower in the West Indies
+ 1967 "The Last Encounter". Sunday Mirror, 8 May 1966 (posthumous).
+ 1964 The Hornblower Companion. Michael Joseph. (Supplementary book comprising another short story, "The Point and the Edge" only as an outline, "The Hornblower Atlas" and "Some Personal Notes")
+
+Omnibus
+ 1964 The Young Hornblower. (a compilation of books 1, 2 & 3). Michael Joseph.
+ 1965 Captain Hornblower (a compilation of books 5, 6 & 7). Michael Joseph.
+ 1968 Admiral Hornblower (a compilation of books 8, 9, 10 & 11). Michael Joseph.
+ 2011 Hornblower Addendum – Five Short Stories (originally published in magazines)
+
+Other novels
+ 1924 A Pawn among Kings. Methuen.
+ 1924 The Paid Piper. Methuen.
+ 1926 Payment Deferred. Methuen.
+ 1927 Love Lies Dreaming. John Lane.
+ 1927 The Wonderful Week. John Lane.
+ 1928 The Daughter of the Hawk. John Lane.
+ 1929 Brown on Resolution. John Lane.
+ 1930 Plain Murder. John Lane.
+ 1931 Two-and-Twenty. John Lane.
+ 1932 Death to the French. John Lane. Published in the U.S. as Rifleman Dodd. Little Brown.
+ 1933 The Gun. John Lane.
+ 1934 The Peacemaker. Heinemann.
+ 1935 The African Queen. Heinemann.
+ 1935 The Pursued (a lost novel rediscovered in 1999 and published by Penguin Classics in 2011)
+ 1936 The General. Michael Joseph. First published as a serial in the News Chronicle 14–18 January 1935
+ 1940 The Earthly Paradise. Michael Joseph. Published in the U.S. as To the Indies.
+ 1941 The Captain from Connecticut. Michael Joseph.
+ 1942 Poo-Poo and the Dragons. Michael Joseph.
+ 1943 The Ship. Michael Joseph.
+ 1948 The Sky and the Forest. Michael Joseph.
+ 1951 Randall and the River of Time. Michael Joseph.
+ 1955 The Good Shepherd. Michael Joseph.
+
+Short stories
+"The Wandering Gentile", Liverpool Echo, 1955
+
+Posthumous
+ 1967  Long before Forty (autobiographical). Michael Joseph.
+ 1971  Gold from Crete (short stories). Michael Joseph.
+ 2011  The Pursued (novel). Penguin.
+
+Collections
+ 1944 The Bedchamber Mystery; to which is added the story of The Eleven Deckchairs and Modernity and Maternity. S. J. Reginald Saunders. Published in the US as Three Matronly Mysteries. eNet Press
+ 1954  The Nightmare. Michael Joseph
+ 1969  The Man in the Yellow Raft. Michael Joseph (posthumous)
+
+Plays in three acts; John Lane
+ 1931  U 97
+ 1933  Nurse Cavell. (with C. E. Bechhofer Roberts)
+
+Non-fiction
+ 1922 Victor Emmanuel II. Methuen (?)
+ 1927 Victor Emmanuel II and the Union of Italy. Methuen.
+ 1924 Napoleon and his Court. Methuen.
+ 1925 Josephine, Napoleon’s Empress. Methuen.
+ 1928 Louis XIV, King of France and Navarre. Methuen.
+ 1929 Lord Nelson. John Lane.
+ 1929 The Voyage of the Annie Marble. John Lane.
+ 1930 The Annie Marble in Germany. John Lane.
+ 1936 Marionettes at Home. Michael Joseph Ltd.
+ 1953 The Adventures of John Wetherell. Doubleday & Company, Inc.
+ 1953 The Barbary Pirates. Landmark Books, Random House. Published in the UK in 1956 by Macdonald & Co.
+ 1957 The Naval War of 1812. Michael Joseph. Published in the US as The Age of Fighting Sail
+ 1959 Hunting the Bismarck. Michael Joseph. Published in the US as The Last Nine Days of the Bismark and Sink the Bismarck
+
+Non-fiction short pieces
+"Calmness under Air Raids in Franco Territory". Western Mail, 28 April 1937
+"Who Is Financing Franco?". Aberdeen Press & Journal, 5 May 1937
+”Sabotage". Sunday Graphic, 11 September 1938
+"Saga of the Submarines". Falkirk Herald, 1 August 1945
+"Hollywood Coincidence". Leicester Chronicle, 3 September 1955
+
+Film adaptations 
+In addition to providing the source material for numerous adaptations (not all of which are listed below), Forester was also credited as "adapted for the screen by" for Captain Horatio Hornblower.
+
+ Payment Deferred (1932), based on a 1931 play which was in turn based on Forester's novel of the same name
+ Brown on Resolution (1935), based on the novel of the same name
+ Eagle Squadron (1942), story
+ Commandos Strike at Dawn (1942), short story "The Commandos"
+ Forever and a Day (1943), story
+ Captain Horatio Hornblower (1951), based on the novels The Happy Return, A Ship of the Line and Flying Colours
+ The African Queen (1951), the novel of the same name
+ Sailor of the King (1953), the novel Brown on Resolution
+ The Pride and the Passion (1957), the novel The Gun
+ Sink the Bismarck! (1960), the novel The Last Nine Days of the Bismarck
+ Hornblower (1998–2003 series of made-for-television movies), based on the novels Mr. Midshipman Hornblower, Lieutenant Hornblower and Hornblower and the Hotspur
+ Greyhound (2020), the novel The Good Shepherd
+
+See also 
+ Honor Harrington – a fictional space captain and admiral in the Honorverse novels by David Weber, inspired by Horatio Hornblower (see dedication in On Basilisk Station)
+ Patrick O'Brian – author of the Aubrey–Maturin series
+ Dudley Pope – author of the Ramage series
+ Richard Woodman – author of the Nathaniel Drinkwater series
+ Douglas Reeman (writing as Alexander Kent) – The Bolitho novels
+
+References
+
+Further reading
+ Sternlicht, Sanford V., C.S. Forester and the Hornblower saga (Syracuse University Press, 1999)
+ Van der Kiste, John, C.S. Forester's Crime Noir: A view of the murder stories (KDP, 2018)
+
+External links 
+
+ C. S. Forester Collection at the Harry Ransom Center
+ 
+ 
+ C. S. Forester Society, which publishes the e-journal Reflections
+ 
+ 
+ C. S. Forester on You Bet Your Life in 1956
+
+1899 births
+1966 deaths
+20th-century English novelists
+20th-century English male writers
+20th-century pseudonymous writers
+Alumni of King's College London
+English historical novelists
+English male novelists
+James Tait Black Memorial Prize recipients
+Nautical historical novelists
+People educated at Alleyn's School
+People educated at Dulwich College
+Writers about the Age of Sail
+Writers from London
+Writers of historical fiction set in the modern age
+Country calling codes, country dial-in codes, international subscriber dialing (ISD) codes, or most commonly, telephone country codes are telephone number prefixes for reaching telephone subscribers in foreign countries or areas via international telecommunication networks. Country codes are defined by the  International Telecommunication Union (ITU) in ITU-T standards E.123 and E.164. The prefixes enable international direct dialing (IDD).
+
+Country codes constitute the international telephone numbering plan. They are used only when dialing a telephone number in a country or world region other than the caller's. Country codes are dialed before the national telephone number, but require at least one additional prefix, the international call prefix which is an exit code from the national numbering plan to the international one. In most countries, this prefix is 00, an ITU recommendation; it is 011 in the countries of the North American Numbering Plan while a minority of countries use other prefixes.
+
+Overview
+This table lists in its first column the initial digits of the country code shared by each country in each row, which is arranged in columns for the last digit. When three-digit codes share a common leading pair, the two-digit code is unassigned, being ambiguous (denoted by "ambig."). Unassigned codes are denoted by a dash (—). Countries are identified by ISO 3166-1 alpha-2 country codes; codes for non-geographic services are denoted by two asterisks (**).
+
+Ordered by world zone
+World zones are organized principally, but only approximately, by geographic location. Exceptions exist for political and historical alignments.
+
+Zone 1: North American Numbering Plan (NANP)
+
+NANP members are assigned three-digit numbering plan area (NPA) codes under the common country prefix 1, shown in the format 1 (NPA).
+
+1 North American Numbering Plan
+ 1 – , including United States territories:
+ 1 (340) – 
+ 1 (670) – 
+ 1 (671) – 
+ 1 (684) – 
+ 1 (787, 939) – 
+ 1 – 
+ Caribbean nations, Dutch and British Overseas Territories:
+ 1 (242) – 
+ 1 (246) – 
+ 1 (264) – 
+ 1 (268) – 
+ 1 (284) – 
+ 1 (345) – 
+ 1 (441) – 
+ 1 (473) – 
+ 1 (649) – 
+ 1 (658, 876) – 
+ 1 (664) – 
+ 1 (721) – 
+ 1 (758) – 
+ 1 (767) – 
+ 1 (784) – 
+ 1 (809, 829, 849) – 
+ 1 (868) – 
+ 1 (869) –
+
+Zone 2: Mostly Africa
+(but also Aruba, Faroe Islands, Greenland and British Indian Ocean Territory)
+ 20 – 
+ 210 – unassigned
+ 211 – 
+ 212 –  (including Western Sahara)
+ 213 – 
+ 214 – unassigned
+ 215 – unassigned
+ 216 – 
+ 217 – unassigned
+ 218 – 
+ 219 – unassigned
+ 220 – 
+ 221 – 
+ 222 – 
+ 223 – 
+ 224 – 
+ 225 – 
+ 226 – 
+ 227 – 
+ 228 – 
+ 229 – 
+ 230 – 
+ 231 – 
+ 232 – 
+ 233 – 
+ 234 – 
+ 235 – 
+ 236 – 
+ 237 – 
+ 238 – 
+ 239 – 
+ 240 – 
+ 241 – 
+ 242 – 
+ 243 – 
+ 244 – 
+ 245 – 
+ 246 – 
+ 247 – 
+ 248 – 
+ 249 – 
+ 250 – 
+ 251 – 
+ 252 –  (including )
+ 253 – 
+ 254 – 
+ 255 – 
+ 255 (24) – , in place of never-implemented 259
+ 256 – 
+ 257 – 
+ 258 – 
+ 259 – unassigned (was intended for People's Republic of Zanzibar but never implemented – see 255 Tanzania)
+ 260 – 
+ 261 – 
+ 262 – 
+ 262 (269,639) –  (formerly at 269 Comoros)
+ 263 – 
+ 264 –  (formerly 27 (6x) as South West Africa)
+ 265 – 
+ 266 – 
+ 267 – 
+ 268 – 
+ 269 –  (formerly assigned to Mayotte, now at 262)
+ 27 – 
+ 28x – unassigned (reserved for country code expansion)
+ 290 – 
+ 290 (8) – 
+ 291 – 
+ 292 – unassigned
+ 293 – unassigned
+ 294 – unassigned
+ 295 – unassigned (formerly assigned to San Marino, now at 378)
+ 296 – unassigned
+ 297 – 
+ 298 – 
+ 299 –
+
+Zones 3–4: Europe
+
+Some of the larger countries were assigned two-digit codes to compensate for their usually longer domestic numbers. Small countries were assigned three-digit codes, which also has been the practice since the 1980s.
+ 30 – 
+ 31 – 
+ 32 – 
+ 33 – 
+ 34 – 
+ 350 – 
+ 351 – 
+ 351 (291) –  (landlines only)
+ 351 (292) –  (landlines only, Horta, Azores area)
+ 351 (295) –  (landlines only, Angra do Heroísmo area)
+ 351 (296) –  (landlines only, Ponta Delgada and São Miguel Island area)
+ 352 – 
+ 353 – 
+ 354 – 
+ 355 – 
+ 356 – 
+ 357 –  (including )
+ 358 – 
+ 358 (18) – 
+ 359 – 
+ 36 –  (formerly assigned to Turkey, now at 90)
+ 37 – unassigned (formerly assigned to East Germany until its reunification with West Germany, now part of 49 Germany)
+ 370 –  (formerly 7/012 as Lithuanian SSR)
+ 371 –  (formerly 7/013 as Latvian SSR)
+ 372 –  (formerly 7/014 as Estonian SSR)
+ 373 –  (formerly 7/042 as Moldavian SSR)
+ 374 –  (formerly 7/885 as Armenian SSR)
+ 374 (47) –  (landlines, formerly 7/893)
+ 374 (97) –  (mobile phones)
+ 375 – 
+376 –  (formerly 33 628)
+ 377 –  (formerly 33 93)
+ 378 –  (interchangeably with 39 0549; earlier was allocated 295 but never used)
+379 –  (assigned but uses 39 06698).
+ 38 – unassigned (formerly assigned to Yugoslavia until its break-up in 1991)
+ 380 – 
+ 381 – 
+ 382 – 
+ 383 – 
+ 384 – unassigned
+ 385 – 
+ 386 – 
+ 387 – 
+ 388 – unassigned (formerly assigned to the European Telephony Numbering Space)
+ 389 – 
+ 39 – 
+ 39 (0549) –  (interchangeably with 378)
+ 39 (06 698) –  (assigned 379 but not in use)
+ 40 – 
+ 41 – 
+ 41 (91) –  Campione d'Italia, an Italian enclave
+ 42 – unassigned (formerly assigned to Czechoslovakia until its breakup in 1993)
+ 420 – 
+ 421 – 
+ 422 – unassigned
+ 423 –  (formerly at 41 (75))
+ 424 – unassigned
+ 425 – unassigned
+ 426 – unassigned
+ 427 – unassigned
+ 428 – unassigned
+ 429 – unassigned
+ 43 – 
+ 44 – 
+ 44 (1481) – 
+ 44 (1534) – 
+ 44 (1624) – 
+ 45 – 
+ 46 – 
+ 47 – 
+ 47 (79) – 
+ 48 – 
+ 49 –
+
+Zone 5: South and Central Americas
+ 500 – 
+ 500 – 
+ 501 – 
+ 502 – 
+ 503 – 
+ 504 – 
+ 505 – 
+ 506 – 
+ 507 – 
+ 508 – 
+ 509 – 
+ 51 – 
+ 52 – 
+ 53 – 
+ 54 – 
+ 55 – 
+ 56 – 
+ 57 – 
+ 58 – 
+ 590 –  (including Saint Barthélemy, Saint Martin)
+ 591 – 
+ 592 – 
+ 593 – 
+ 594 – 
+ 595 – 
+ 596 –  (formerly assigned to Peru, now 51)
+ 597 – 
+ 598 – 
+ 599 – Former , now grouped as follows:
+ 599 3 – 
+ 599 4 – 
+ 599 5 – unassigned (formerly assigned to Sint Maarten, now included in NANP as 1 (721))
+ 599 7 – 
+ 599 8 – unassigned (formerly assigned to Aruba, now at 297)
+ 599 9 –
+
+Zone 6: Southeast Asia and Oceania
+ 60 – 
+ 61 –  (see also 672 below)
+ 61 (8 9162) – 
+ 61 (8 9164) – 
+ 62 – 
+ 63 – 
+ 64 – 
+ 64 – 
+ 65 – 
+ 66 – 
+ 670 –  (formerly 62/39 during the Indonesian occupation; formerly assigned to Northern Mariana Islands, now part of NANP as 1 (670))
+ 671 – unassigned (formerly assigned to Guam, now part of NANP as 1 (671))
+ 672 – Australian External Territories (see also 61 Australia above); formerly assigned to Portuguese Timor (see 670)
+ 672 (1x) –  Australian Antarctic Territory
+ 672 (3) – 
+ 673 – 
+ 674 – 
+ 675 – 
+ 676 – 
+ 677 – 
+ 678 – 
+ 679 – 
+ 680 – 
+ 681 – 
+ 682 – 
+ 683 – 
+ 684 – unassigned (formerly assigned to American Samoa, now part of NANP as 1 (684))
+ 685 – 
+ 686 – 
+ 687 – 
+ 688 – 
+ 689 – 
+ 690 – 
+ 691 – 
+ 692 – 
+ 693 – unassigned
+ 694 – unassigned
+ 695 – unassigned
+ 696 – unassigned
+ 697 – unassigned
+ 698 – unassigned
+ 699 – unassigned
+
+Zone 7: Russia and neighboring regions 
+Formerly assigned to the Soviet Union until its dissolution in 1991.
+ 7 (1–5, 8, 9) – 
+ 7 (840, 940) –  (interchangeably with 995 (44))
+ 7 (850, 929) –  (interchangeably with 995 (34))
+ 7 (6, 7) –  (assigned 997 but unused)
+
+Zone 8: East Asia and special services
+ 800 – Universal International Freephone Service (UIFN)
+ 801 – unassigned
+ 802 – unassigned
+ 803 – unassigned
+ 804 – unassigned
+ 805 – unassigned
+ 806 – unassigned
+ 807 – unassigned
+ 808 – Universal International Shared Cost Numbers
+ 809 – unassigned
+ 81 – 
+ 82 – 
+ 83x – unassigned (reserved for country code expansion)
+ 84 – 
+ 850 – 
+ 851 – unassigned
+ 852 – 
+ 853 – 
+ 854 – unassigned
+ 855 – 
+ 856 – 
+ 857 – unassigned (formerly assigned to ANAC satellite service)
+ 858 – unassigned (formerly assigned to ANAC satellite service)
+ 859 – unassigned
+ 86 – 
+ 870 – Inmarsat 
+ 871 – unassigned (formerly assigned to Inmarsat Atlantic East, discontinued in 2008)
+ 872 – unassigned (formerly assigned to Inmarsat Pacific, discontinued in 2008)
+ 873 – unassigned (formerly assigned to Inmarsat Indian, discontinued in 2008)
+ 874 – unassigned (formerly assigned to Inmarsat Atlantic West, discontinued in 2008)
+ 875 – unassigned (reserved for future maritime mobile service)
+ 876 – unassigned (reserved for future maritime mobile service)
+ 877 – unassigned (reserved for future maritime mobile service)
+ 878 – unassigned (formerly used for Universal Personal Telecommunications Service, discontinued in 2022)
+ 879 – unassigned (reserved for national non-commercial purposes)
+ 880 – 
+ 881 – Global Mobile Satellite System
+ 882 – International Networks
+ 883 – International Networks
+ 884 – unassigned
+ 885 – unassigned
+ 886 – 
+ 887 – unassigned
+ 888 – unassigned (formerly assigned to OCHA for Telecommunications for Disaster Relief service)
+ 889 – unassigned
+ 89x – unassigned (reserved for country code expansion)
+
+Zone 9: Mostly Middle East, West Asia, Central Asia, parts of South Asia and Eastern Europe 
+ 90 – 
+ 90 (392) – 
+ 91 – 
+ 92 – 
+ 92 (581) – 
+ 92 (582) – 
+ 93 – 
+ 94 – 
+ 95 – 
+ 960 – 
+ 961 – 
+ 962 – 
+ 963 – 
+ 964 – 
+ 965 – 
+ 966 – 
+ 967 – 
+ 968 – 
+ 969 – unassigned (formerly assigned to South Yemen until its unification with North Yemen, now part of 967 Yemen)
+ 970 – 
+ 971 – 
+ 972 – 
+ 973 – 
+ 974 – 
+ 975 – 
+ 976 – 
+ 977 – 
+ 978 – unassigned (formerly assigned to Dubai, now part of 971 United Arab Emirates)
+ 979 – Universal International Premium Rate Service (UIPRS); (formerly assigned to Abu Dhabi, now part of 971 United Arab Emirates)
+ 98 – 
+ 990 – unassigned
+ 991 – unassigned (formerly used for International Telecommunications Public Correspondence Service)
+ 992 – 
+ 993 – 
+ 994 – 
+ 995 – 
+ 995 (34) –  (interchangeably with 7 (850, 929))
+ 995 (44) –  (interchangeably with 7 (840, 940))
+ 996 – 
+ 997 –  (assigned but uses 7 (6xx, 7xx))
+ 998 – 
+ 999 – unassigned (reserved for future global service)
+
+Alphabetical order
+
+Locations with no country code
+In Antarctica, telecommunication services are provided by the parent country of each base:
+
+Other places with no country codes in use, although a code may be reserved:
+
+See also
+
+ List of mobile telephone prefixes by country
+ National conventions for writing telephone numbers
+
+References
+
+External links
+
+ 
+ 
+ 
+ 
+ 
+
+Communication-related lists
+International telecommunications
+Lists of country codes
+Telecommunications lists
+Christopher Marlowe, also known as Kit Marlowe (; baptised 26 February 156430 May 1593), was an English playwright, poet and translator of the Elizabethan era. Marlowe is among the most famous of the Elizabethan playwrights. Based upon the "many imitations" of his play Tamburlaine, modern scholars consider him to have been the foremost dramatist in London in the years just before his mysterious early death. Some scholars also believe that he greatly influenced William Shakespeare, who was baptised in the same year as Marlowe and later succeeded him as the pre-eminent Elizabethan playwright. Marlowe was the first to achieve critical reputation for his use of blank verse, which became the standard for the era. His plays are distinguished by their overreaching protagonists. Themes found within Marlowe's literary works have been noted as humanistic with realistic emotions, which some scholars find difficult to reconcile with Marlowe's "anti-intellectualism" and his catering to the prurient tastes of his Elizabethan audiences for generous displays of extreme physical violence, cruelty, and bloodshed.
+
+Events in Marlowe's life were sometimes as extreme as those found in his plays. Differing sensational reports of Marlowe's death in 1593 abounded after the event and are contested by scholars today owing to a lack of good documentation. There have been many conjectures as to the nature and reason for his death, including a vicious bar-room fight, blasphemous libel against the church, homosexual intrigue, betrayal by another playwright, and espionage from the highest level: the Privy Council of Elizabeth I. An official coroner's account of Marlowe's death was discovered only in 1925, and it did little to persuade all scholars that it told the whole story, nor did it eliminate the uncertainties present in his biography.
+
+Early life
+
+Christopher Marlowe, the second of nine children, and oldest child after the death of his sister Mary in 1568, was born to Canterbury shoemaker John Marlowe and his wife Katherine, daughter of William Arthur of Dover. He was baptised at St George's Church, Canterbury, on 26 February 1564 (1563 in the old style dates in use at the time, which placed the new year on 25 March). Marlowe's birth was likely to have been a few days before, making him about two months older than William Shakespeare, who was baptised on 26 April 1564 in Stratford-upon-Avon.
+
+By age 14, Marlowe was a pupil at The King's School, Canterbury on a scholarship and two years later a student at Corpus Christi College, Cambridge, where he also studied through a scholarship with expectation that he would become an Anglican clergyman. Instead, he received his Bachelor of Arts degree in 1584. Marlowe mastered Latin during his schooling, reading and translating the works of Ovid. In 1587, the university hesitated to award his Master of Arts degree because of a rumour that he intended to go to the English seminary at Rheims in northern France, presumably to prepare for ordination as a Roman Catholic priest. If true, such an action on his part would have been a direct violation of royal edict issued by Queen Elizabeth I in 1585 criminalising any attempt by an English citizen to be ordained in the Roman Catholic Church.
+
+Large-scale violence between Protestants and Catholics on the European continent has been cited by scholars as the impetus for the Protestant English Queen's defensive anti-Catholic laws issued from 1581 until her death in 1603. Despite the dire implications for Marlowe, his degree was awarded on schedule when the Privy Council intervened on his behalf, commending him for his "faithful dealing" and "good service" to the Queen. The nature of Marlowe's service was not specified by the council, but its letter to the Cambridge authorities has provoked much speculation by modern scholars, notably the theory that Marlowe was operating as a secret agent for Privy Council member Sir Francis Walsingham. The only surviving evidence of the Privy Council's correspondence is found in their minutes, the letter being lost. There is no mention of espionage in the minutes, but its summation of the lost Privy Council letter is vague in meaning, stating that "it was not Her Majesties pleasure" that persons employed as Marlowe had been "in matters touching the benefit of his country should be defamed by those who are ignorant in th'affaires he went about." Scholars agree the vague wording was typically used to protect government agents, but they continue to debate what the "matters touching the benefit of his country" actually were in Marlowe's case and how they affected the 23-year-old writer as he launched his literary career in 1587.
+
+Adult life and legend
+Little is known about Marlowe's adult life. All available evidence, other than what can be deduced from his literary works, is found in legal records and other official documents. Writers of fiction and non-fiction have speculated about his professional activities, private life, and character. Marlowe has been described as a spy, a brawler, and a heretic, as well as a "magician", "duellist", "tobacco-user", "counterfeiter" and "rakehell". While J. A. Downie and Constance Kuriyama have argued against the more lurid speculations, it is the usually circumspect J. B. Steane who remarked, "it seems absurd to dismiss all of these Elizabethan rumours and accusations as 'the Marlowe myth. Much has been written on his brief adult life, including speculation of: his involvement in royally-sanctioned espionage; his vocal declaration as an atheist; his (possibly same-sex) sexual interests; and the puzzling circumstances surrounding his death.
+
+Spying
+ 
+Marlowe is alleged to have been a government spy. Park Honan and Charles Nicholl speculate that this was the case and suggest that Marlowe's recruitment took place when he was at Cambridge. In 1587, when the Privy Council ordered the University of Cambridge to award Marlowe his degree as Master of Arts, it denied rumours that he intended to go to the English Catholic college in Rheims, saying instead that he had been engaged in unspecified "affaires" on "matters touching the benefit of his country". Surviving college records from the period also indicate that, in the academic year 1584–1585, Marlowe had had a series of unusually lengthy absences from the university which violated university regulations. Surviving college buttery accounts, which record student purchases for personal provisions, show that Marlowe began spending lavishly on food and drink during the periods he was in attendance; the amount was more than he could have afforded on his known scholarship income.
+
+It has been speculated that Marlowe was the "Morley" who was tutor to Arbella Stuart in 1589. This possibility was first raised in a Times Literary Supplement letter by E. St John Brooks in 1937; in a letter to Notes and Queries, John Baker has added that only Marlowe could have been Arbella's tutor owing to the absence of any other known "Morley" from the period with an MA and not otherwise occupied. If Marlowe was Arbella's tutor, it might indicate that he was there as a spy, since Arbella, niece of Mary, Queen of Scots, and cousin of James VI of Scotland, later James I of England, was at the time a strong candidate for the succession to Elizabeth's throne. Frederick S. Boas dismisses the possibility of this identification, based on surviving legal records which document Marlowe's "residence in London between September and December 1589". Marlowe had been party to a fatal quarrel involving his neighbours and the poet Thomas Watson in Norton Folgate and was held in Newgate Prison for a fortnight. In fact, the quarrel and his arrest occurred on 18 September, he was released on bail on 1 October and he had to attend court, where he was acquitted on 3 December, but there is no record of where he was for the intervening two months.
+
+In 1592 Marlowe was arrested in the English garrison town of Flushing (Vlissingen) in the Netherlands, for alleged involvement in the counterfeiting of coins, presumably related to the activities of seditious Catholics. He was sent to the Lord Treasurer (Burghley), but no charge or imprisonment resulted. This arrest may have disrupted another of Marlowe's spying missions, perhaps by giving the resulting coinage to the Catholic cause. He was to infiltrate the followers of the active Catholic plotter William Stanley and report back to Burghley.
+
+Philosophy
+
+Marlowe was reputed to be an atheist, which held the dangerous implication of being an enemy of God and the state, by association. With the rise of public fears concerning The School of Night, or "School of Atheism" in the late 16th century, accusations of atheism were closely associated with disloyalty to the Protestant monarchy of England.
+
+Some modern historians consider that Marlowe's professed atheism, as with his supposed Catholicism, may have been no more than a sham to further his work as a government spy. Contemporary evidence comes from Marlowe's accuser in Flushing, an informer called Richard Baines. The governor of Flushing had reported that each of the men had "of malice" accused the other of instigating the counterfeiting and of intending to go over to the Catholic "enemy"; such an action was considered atheistic by the Church of England. Following Marlowe's arrest in 1593, Baines submitted to the authorities a "note containing the opinion of one Christopher Marly concerning his damnable judgment of religion, and scorn of God's word". Baines attributes to Marlowe a total of eighteen items which "scoff at the pretensions of the Old and New Testament" such as, "Christ was a bastard and his mother dishonest [unchaste]", "the woman of Samaria and her sister were whores and that Christ knew them dishonestly", "St John the Evangelist was bedfellow to Christ and leaned always in his bosom" (cf. John 13:23–25) and "that he used him as the sinners of Sodom". He also implied that Marlowe had Catholic sympathies. Other passages are merely sceptical in tone: "he persuades men to atheism, willing them not to be afraid of bugbears and hobgoblins". The final paragraph of Baines's document reads:
+
+Similar examples of Marlowe's statements were given by Thomas Kyd after his imprisonment and possible torture (see above); Kyd and Baines connect Marlowe with mathematician Thomas Harriot's and Sir Walter Raleigh's circle. Another document claimed about that time that "one Marlowe is able to show more sound reasons for Atheism than any divine in England is able to give to prove divinity, and that ... he hath read the Atheist lecture to Sir Walter Raleigh and others".
+
+Some critics believe that Marlowe sought to disseminate these views in his work and that he identified with his rebellious and iconoclastic protagonists. Plays had to be approved by the Master of the Revels before they could be performed and the censorship of publications was under the control of the Archbishop of Canterbury. Presumably these authorities did not consider any of Marlowe's works to be unacceptable other than the Amores.
+
+Sexuality
+
+It has been claimed that Marlowe was homosexual. Some scholars argue that the identification of an Elizabethan as gay or homosexual in the modern sense is "anachronistic," claiming that for the Elizabethans the terms were more likely to have been applied to homoerotic affections or sexual acts rather than to what we currently understand as a settled sexual orientation or personal role identity. Other scholars argue that the evidence is inconclusive and that the reports of Marlowe's homosexuality may be rumours produced after his death. Richard Baines reported Marlowe as saying: "all they that love not Tobacco & Boies were fools". David Bevington and Eric C. Rasmussen describe Baines's evidence as "unreliable testimony" and "[t]hese and other testimonials need to be discounted for their exaggeration and for their having been produced under legal circumstances we would now regard as a witch-hunt".
+
+J. B. Steane considered there to be "no evidence for Marlowe's homosexuality at all". Other scholars point to the frequency with which Marlowe explores homosexual themes in his writing: in Hero and Leander, Marlowe writes of the male youth Leander: "in his looks were all that men desire..." Edward the Second contains the following passage enumerating homosexual relationships:
+
+Marlowe wrote the only play about the life of Edward II up to his time, taking the humanist literary discussion of male sexuality much further than his contemporaries. The play was extremely bold, dealing with a star-crossed love story between Edward II and Piers Gaveston. Though it was a common practice at the time to reveal characters as homosexual to give audiences reason to suspect them as culprits in a crime, Christopher Marlowe's Edward II is portrayed as a sympathetic character. The decision to start the play Dido, Queen of Carthage with a homoerotic scene between Jupiter and Ganymede that bears no connection to the subsequent plot has long puzzled scholars.
+
+Arrest and death
+
+In early May 1593, several bills were posted about London threatening the Protestant refugees from France and the Netherlands who had settled in the city. One of these, the "Dutch church libel", written in rhymed iambic pentameter, contained allusions to several of Marlowe's plays and was signed, "Tamburlaine". On 11 May the Privy Council ordered the arrest of those responsible for the libels. The next day, Marlowe's colleague Thomas Kyd was arrested, his lodgings were searched and a three-page fragment of a heretical tract was found. In a letter to Sir John Puckering, Kyd asserted that it had belonged to Marlowe, with whom he had been writing "in one chamber" some two years earlier. In a second letter, Kyd described Marlowe as blasphemous, disorderly, holding treasonous opinions, being an irreligious reprobate and "intemperate & of a cruel hart". They had both been working for an aristocratic patron, probably Ferdinando Stanley, Lord Strange. A warrant for Marlowe's arrest was issued on 18 May, when the Privy Council apparently knew that he might be found staying with Thomas Walsingham, whose father was a first cousin of the late Sir Francis Walsingham, Elizabeth's principal secretary in the 1580s and a man more deeply involved in state espionage than any other member of the Privy Council. Marlowe duly presented himself on 20 May but there apparently being no Privy Council meeting on that day, was instructed to "give his daily attendance on their Lordships, until he shall be licensed to the contrary". On Wednesday, 30 May, Marlowe was killed.
+
+Various accounts of Marlowe's death were current over the next few years. In his Palladis Tamia, published in 1598, Francis Meres says Marlowe was "stabbed to death by a bawdy serving-man, a rival of his in his lewd love" as punishment for his "epicurism and atheism". In 1917, in the Dictionary of National Biography, Sir Sidney Lee wrote, on slender evidence, that Marlowe was killed in a drunken fight. His claim was not much at variance with the official account, which came to light only in 1925, when the scholar Leslie Hotson discovered the coroner's report of the inquest on Marlowe's death, held two days later on Friday 1 June 1593, by the Coroner of the Queen's Household, William Danby. Marlowe had spent all day in a house in Deptford, owned by the widow Eleanor Bull, with three men: Ingram Frizer, Nicholas Skeres and Robert Poley. All three had been employed by one or other of the Walsinghams. Skeres and Poley had helped snare the conspirators in the Babington plot and Frizer was a servant to Thomas Walsingham probably in the role of a financial or business agent, as he was for Walsingham's wife Audrey a few years later. These witnesses testified that Frizer and Marlowe had argued over payment of the bill (now famously known as the 'Reckoning') exchanging "divers malicious words" while Frizer was sitting at a table between the other two and Marlowe was lying behind him on a couch. Marlowe snatched Frizer's dagger and wounded him on the head. In the ensuing struggle, according to the coroner's report, Marlowe was stabbed above the right eye, killing him instantly. The jury concluded that Frizer acted in self-defence and within a month he was pardoned. Marlowe was buried in an unmarked grave in the churchyard of St. Nicholas, Deptford immediately after the inquest, on 1 June 1593.
+
+The complete text of the inquest report was published by Leslie Hotson in his book, The Death of Christopher Marlowe, in the introduction to which Prof. George Kittredge said, "The mystery of Marlowe's death, heretofore involved in a cloud of contradictory gossip and irresponsible guess-work, is now cleared up for good and all on the authority of public records of complete authenticity and gratifying fullness" but this confidence proved fairly short-lived. Hotson had considered the possibility that the witnesses had "concocted a lying account of Marlowe's behaviour, to which they swore at the inquest, and with which they deceived the jury" but came down against that scenario. Others began to suspect that this scenario was indeed the case. Writing to the Times Literary Supplement shortly after the book's publication, Eugénie de Kalb disputed that the struggle and outcome as described were even possible and Samuel A. Tannenbaum insisted the following year that such a wound could not have possibly resulted in instant death, as had been claimed. Even Marlowe's biographer John Bakeless acknowledged that "some scholars have been inclined to question the truthfulness of the coroner's report. There is something queer about the whole episode" and said that Hotson's discovery "raises almost as many questions as it answers". It has also been discovered more recently that the apparent absence of a local county coroner to accompany the Coroner of the Queen's Household would, if noticed, have made the inquest null and void.
+
+One of the main reasons for doubting the truth of the inquest concerns the reliability of Marlowe's companions as witnesses. As an agent provocateur for the late Sir Francis Walsingham, Robert Poley was a consummate liar, the "very genius of the Elizabethan underworld" and is on record as saying "I will swear and forswear myself, rather than I will accuse myself to do me any harm". The other witness, Nicholas Skeres, had for many years acted as a confidence trickster, drawing young men into the clutches of people in the money-lending racket, including Marlowe's apparent killer, Ingram Frizer, with whom he was engaged in such a swindle. Despite their being referred to as generosi (gentlemen) in the inquest report, the witnesses were professional liars. Some biographers, such as Kuriyama and Downie, take the inquest to be a true account of what occurred, but in trying to explain what really happened if the account was not true, others have come up with a variety of murder theories:
+ Jealous of her husband Thomas's relationship with Marlowe, Audrey Walsingham arranged for the playwright to be murdered.
+ Sir Walter Raleigh arranged the murder, fearing that under torture Marlowe might incriminate him.
+ With Skeres the main player, the murder resulted from attempts by the Earl of Essex to use Marlowe to incriminate Sir Walter Raleigh.
+ He was killed on the orders of father and son Lord Burghley and Sir Robert Cecil, who thought that his plays contained Catholic propaganda.
+ He was accidentally killed while Frizer and Skeres were pressuring him to pay back money he owed them.
+ Marlowe was murdered at the behest of several members of the Privy Council, who feared that he might reveal them to be atheists.
+ The Queen ordered his assassination because of his subversive atheistic behaviour.
+ Frizer murdered him because he envied Marlowe's close relationship with his master Thomas Walsingham and feared the effect that Marlowe's behaviour might have on Walsingham's reputation.
+ Marlowe's death was faked to save him from trial and execution for subversive atheism.
+
+Since there are only written documents on which to base any conclusions and since it is probable that the most crucial information about his death was never committed to paper, it is unlikely that the full circumstances of Marlowe's death will ever be known.
+
+Reputation among contemporary writers
+
+For his contemporaries in the literary world, Marlowe was above all an admired and influential artist. Within weeks of his death, George Peele remembered him as "Marley, the Muses' darling"; Michael Drayton noted that he "Had in him those brave translunary things / That the first poets had" and Ben Jonson even wrote of "Marlowe's mighty line". Thomas Nashe wrote warmly of his friend, "poor deceased Kit Marlowe," as did the publisher Edward Blount in his dedication of Hero and Leander to Sir Thomas Walsingham. Among the few contemporary dramatists to say anything negative about Marlowe was the anonymous author of the Cambridge University play The Return from Parnassus (1598) who wrote, "Pity it is that wit so ill should dwell, / Wit lent from heaven, but vices sent from hell".
+
+The most famous tribute to Marlowe was paid by Shakespeare in As You Like It, where he not only quotes a line from Hero and Leander ("Dead Shepherd, now I find thy saw of might, 'Who ever lov'd that lov'd not at first sight?) but also gives to the clown Touchstone the words "When a man's verses cannot be understood, nor a man's good wit seconded with the forward child, understanding, it strikes a man more dead than a great reckoning in a little room." This appears to be a reference to Marlowe's murder which involved a fight over the "reckoning," the bill, as well as to a line in Marlowe's Jew of Malta, "Infinite riches in a little room."
+
+Shakespeare was much influenced by Marlowe in his work, as can be seen in the use of Marlovian themes in Antony and Cleopatra, The Merchant of Venice, Richard II and Macbeth (Dido, Jew of Malta, Edward II and Doctor Faustus, respectively). In Hamlet, after meeting with the travelling actors, Hamlet requests the Player perform a speech about the Trojan War, which at 2.2.429–432 has an echo of Marlowe's Dido, Queen of Carthage. In Love's Labour's Lost Shakespeare brings on a character "Marcade" (three syllables) in conscious acknowledgement of Marlowe's character "Mercury", also attending the King of Navarre, in Massacre at Paris. The significance, to those of Shakespeare's audience who were familiar with Hero and Leander, was Marlowe's identification of himself with the god Mercury.
+
+Shakespeare authorship theory
+
+An argument has arisen about the notion that Marlowe faked his death and then continued to write under the assumed name of William Shakespeare. Academic consensus rejects alternative candidates for authorship of Shakespeare's plays and sonnets, including Marlowe.
+
+Literary career
+
+Plays
+Six dramas have been attributed to the authorship of Christopher Marlowe either alone or in collaboration with other writers, with varying degrees of evidence. The writing sequence or chronology of these plays is mostly unknown and is offered here with any dates and evidence known. Among the little available information we have, Dido is believed to be the first Marlowe play performed, while it was Tamburlaine that was first to be performed on a regular commercial stage in London in 1587. Believed by many scholars to be Marlowe's greatest success, Tamburlaine was the first English play written in blank verse and, with Thomas Kyd's The Spanish Tragedy, is generally considered the beginning of the mature phase of the Elizabethan theatre.
+
+The play Lust's Dominion was attributed to Marlowe upon its initial publication in 1657, though scholars and critics have almost unanimously rejected the attribution. He may also have written or co-written Arden of Faversham.
+
+Poetry and translations
+Publication and responses to the poetry and translations credited to Marlowe primarily occurred posthumously, including:
+ Amores, first book of Latin elegiac couplets by Ovid with translation by Marlowe (c. 1580s); copies publicly burned as offensive in 1599.
+ The Passionate Shepherd to His Love, by Marlowe. (c. 1587–1588); a popular lyric of the time.
+ Hero and Leander, by Marlowe (c. 1593, unfinished; completed by George Chapman, 1598; printed 1598).
+ Pharsalia, Book One, by Lucan with translation by Marlowe. (c. 1593; printed 1600)
+
+Collaborations
+Modern scholars still look for evidence of collaborations between Marlowe and other writers. In 2016, one publisher was the first to endorse the scholarly claim of a collaboration between Marlowe and the playwright William Shakespeare:
+ Henry VI by William Shakespeare is now credited as a collaboration with Marlowe in the New Oxford Shakespeare series, published in 2016. Marlowe appears as co-author of the three Henry VI plays, though some scholars doubt any actual collaboration.
+
+Contemporary reception
+
+Marlowe's plays were enormously successful, possibly because of the imposing stage presence of his lead actor, Edward Alleyn. Alleyn was unusually tall for the time and the haughty roles of Tamburlaine, Faustus and Barabas were probably written for him. Marlowe's plays were the foundation of the repertoire of Alleyn's company, the Admiral's Men, throughout the 1590s. One of Marlowe's poetry translations did not fare as well. In 1599, Marlowe's translation of Ovid was banned and copies were publicly burned as part of Archbishop Whitgift's crackdown on offensive material.
+
+Chronology of dramatic works
+
+(Patrick Cheney's 2004 Cambridge Companion to Christopher Marlowe presents an alternative timeline based upon printing dates.)
+
+Dido, Queen of Carthage (–1587)
+
+First official record 1594
+
+First published 1594; posthumously
+
+First recorded performance between 1587 and 1593 by the Children of the Chapel, a company of boy actors in London.
+
+Significance This play is believed by many scholars to be the first play by Christopher Marlowe to be performed.
+
+Attribution The title page attributes the play to Marlowe and Thomas Nashe, yet some scholars question how much of a contribution Nashe made to the play.
+
+Evidence No manuscripts by Marlowe exist for this play.
+
+Tamburlaine, Part I (); Part II (–1588) 
+
+First official record 1587, Part I
+
+First published 1590, Parts I and II in one octavo, London. No author named.
+
+First recorded performance 1587, Part I, by the Admiral's Men, London.
+
+Significance Tamburlaine is the first example of blank verse used in the dramatic literature of the Early Modern English theatre.
+
+Attribution Author name is missing from first printing in 1590. Attribution of this work by scholars to Marlowe is based upon comparison to his other verified works. Passages and character development in Tamburlane are similar to many other Marlowe works.
+
+Evidence No manuscripts by Marlowe exist for this play. Parts I and II were entered into the Stationers' Register on 14 August 1590. The two parts were published together by the London printer, Richard Jones, in 1590; a second edition in 1592, and a third in 1597. The 1597 edition of the two parts were published separately in quarto by Edward White; part I in 1605, and part II in 1606.
+
+The Jew of Malta (–1590) 
+
+First official record 1592
+
+First published 1592; earliest extant edition, 1633
+
+First recorded performance 26 February 1592, by Lord Strange's acting company.
+
+Significance The performances of the play were a success and it remained popular for the next fifty years. This play helps to establish the strong theme of "anti-authoritarianism" that is found throughout Marlowe's works.
+
+Evidence No manuscripts by Marlowe exist for this play. The play was entered in the Stationers' Register on 17 May 1594 but the earliest surviving printed edition is from 1633.
+
+Doctor Faustus (–1592)
+
+First official record 1594–1597
+
+First published 1601, no extant copy; first extant copy, 1604 (A text) quarto; 1616 (B text) quarto.
+
+First recorded performance 1594–1597; 24 revival performances occurred between these years by the Lord Admiral's Company, Rose Theatre, London; earlier performances probably occurred around 1589 by the same company.
+
+Significance This is the first dramatised version of the Faust legend of a scholar's dealing with the devil. Marlowe deviates from earlier versions of "The Devil's Pact" significantly: Marlowe's protagonist is unable to "burn his books" or repent to a merciful God to have his contract annulled at the end of the play; he is carried off by demons; and, in the 1616 quarto, his mangled corpse is found by the scholar characters.
+
+Attribution The 'B text' was highly edited and censored, owing in part to the shifting theatre laws regarding religious words onstage during the seventeenth-century. Because it contains several additional scenes believed to be the additions of other playwrights, particularly Samuel Rowley and William Bird (alias Borne), a recent edition attributes the authorship of both versions to "Christopher Marlowe and his collaborator and revisers." This recent edition has tried to establish that the 'A text' was assembled from Marlowe's work and another writer, with the 'B text' as a later revision.
+
+Evidence No manuscripts by Marlowe exist for this play. The two earliest-printed extant versions of the play, A and B, form a textual problem for scholars. Both were published after Marlowe's death and scholars disagree which text is more representative of Marlowe's original. Some editions are based on a combination of the two texts. Late-twentieth-century scholarly consensus identifies 'A text' as more representative because it contains irregular character names and idiosyncratic spelling, which are believed to reflect the author's handwritten manuscript or "foul papers". In comparison, 'B text' is highly edited with several additional scenes possibly written by other playwrights.
+
+Edward the Second ()
+
+First official record 1593
+
+First published 1590; earliest extant edition 1594 octavo
+
+First recorded performance 1592, performed by the Earl of Pembroke's Men.
+
+Significance Considered by recent scholars as Marlowe's "most modern play" because of its probing treatment of the private life of a king and unflattering depiction of the power politics of the time. The 1594 editions of Edward II and of Dido are the first published plays with Marlowe's name appearing as the author.
+
+Attribution Earliest extant edition of 1594.
+
+Evidence The play was entered into the Stationers' Register on 6 July 1593, five weeks after Marlowe's death.
+
+The Massacre at Paris (–1593)
+
+First official record , alleged foul sheet by Marlowe of "Scene 19"; although authorship by Marlowe is contested by recent scholars, the manuscript is believed written while the play was first performed and with an unknown purpose.
+
+First published undated,  or later, octavo, London; while this is the most complete surviving text, it is near half the length of Marlowe's other works and possibly a reconstruction. The printer and publisher credit, "E.A. for Edward White," also appears on the 1605/06 printing of Marlowe's Tamburlaine.
+
+First recorded performance 26 Jan 1593, by Lord Strange's Men, at Henslowe's Rose Theatre, London, under the title The Tragedy of the Guise; 1594, in the repertory of the Admiral's Men.
+
+Significance The Massacre at Paris is considered Marlowe's most dangerous play, as agitators in London seized on its theme to advocate the murders of refugees from the low countries of the Spanish Netherlands, and it warns Elizabeth I of this possibility in its last scene. It features the silent "English Agent", whom tradition has identified with Marlowe and his connexions to the secret service. Highest grossing play for Lord Strange's Men in 1593.
+
+Attribution A 1593 loose manuscript sheet of the play, called a foul sheet, is alleged to be by Marlowe and has been claimed by some scholars as the only extant play manuscript by the author. It could also provide an approximate date of composition for the play. When compared with the extant printed text and his other work, other scholars reject the attribution to Marlowe. The only surviving printed text of this play is possibly a reconstruction from memory of Marlowe's original performance text. Current scholarship notes that there are only 1147 lines in the play, half the amount of a typical play of the 1590s. Other evidence that the extant published text may not be Marlowe's original is the uneven style throughout, with two-dimensional characterisations, deteriorating verbal quality and repetitions of content.
+
+Evidence Never appeared in the Stationer's Register.
+
+Memorials
+
+The Muse of Poetry, a bronze sculpture  by Edward Onslow Ford references Marlowe and his work. It was erected on Buttermarket, Canterbury in 1891, and now stands outside the Marlowe Theatre in the city.
+
+In July 2002, a memorial window to Marlowe was unveiled by the Marlowe Society at Poets' Corner in Westminster Abbey. Controversially, a question mark was added to his generally accepted date of death. On 25 October 2011 a letter from Paul Edmondson and Stanley Wells was published by The Times newspaper, in which they called on the Dean and Chapter to remove the question mark on the grounds that it "flew in the face of a mass of unimpugnable evidence". In 2012, they renewed this call in their e-book Shakespeare Bites Back, adding that it "denies history" and again the following year in their book Shakespeare Beyond Doubt.
+
+The Marlowe Theatre in Canterbury, Kent, UK, was named for Marlowe in 1949.
+
+Marlowe in fiction
+
+Marlowe has been used as a character in books, theatre, film, television, games and radio.
+
+Modern compendia
+Modern scholarly collected works of Marlowe include:
+ The Complete Works of Christopher Marlowe (edited by Roma Gill in 1986; Clarendon Press published in partnership with Oxford University Press)
+ The Complete Plays of Christopher Marlowe (edited by J. B. Steane in 1969; edited by Frank Romany and Robert Lindsey, Revised Edition, 2004, Penguin)
+
+Works of Marlowe in performance
+
+Radio
+
+ BBC Radio broadcast adaptations of Marlowe's six plays from May to October 1993.
+
+Royal Shakespeare Company
+
+Royal Shakespeare Company
+
+ Dido, Queen of Carthage, directed by Kimberly Sykes, with Chipo Chung as Dido. Swan Theatre, 2017. 
+ Tamburlaine the Great, directed by Terry Hands, with Anthony Sher as Tamburlaine. Swan Theatre, 1992; Barbican Theatre, 1993. 
+ Tamburlaine the Great  directed by Michael Boyd, with Jude Owusu as Tamburlaine. Swan Theatre, 2018. 
+ The Jew of Malta, directed by Barry Kyle, with Jasper Britton as Barabas. Swan Theatre, 1987; People's Theatre, and Barbican Theatre, 1988. 
+ The Jew of Malta, directed by Justin Audibert, with Jasper Britton as Barabas. Swan Theatre, 2015.
+ Edward II, directed by Gerard Murphy, with Simon Russell Beale as Edward. Swan Theatre, 1990.
+ Doctor Faustus, directed by John Barton, with Ian McKellen as Faustus. Nottingham Playhouse and Aldwych Theatre, 1974, and Royal Shakespeare Theatre, 1975. 
+ Doctor Faustus directed by Barry Kyle with Gerard Murphy as Faustus, Swan Theatre and Pit Theatre, 1989.
+ Doctor Faustus directed by Maria Aberg, with Sandy Grierson and Oliver Ryan sharing the roles of Faustus and Mephistophilis. Swan Theatre and Barbican Theatre, 2016.
+
+Royal National Theatre
+
+Royal National Theatre
+
+ Tamburlaine, directed by Peter Hall, with Albert Finney as Tamburlaine. Olivier Theatre, 1976.
+ Dido, Queen of Carthage, directed by James McDonald with Anastasia Hille as Dido. Cottesloe Theatre, 2009. 
+ Edward II, directed by Joe Hill-Gibbins, with John Heffernan as Edward. Olivier Theatre, 2013.
+
+Shakespeare's Globe
+
+Shakespeare's Globe
+
+Dido, Queen of Carthage, directed by Tim Carroll, with Rakie Ayola as Dido, 2003.
+ Edward II, directed by Timothy Walker, with Liam Brennan as Edward, 2003.
+
+Malthouse Theatre
+The Marlowe Sessions
+
+Dido, Queen of Carthage, Directed/Produced by Ray Mia, Performance direction by Stephen Unwin, with Thalissa Teixeira as Dido, 2022.
+Tamburlaine The Great, Part 1, Directed/Produced by Ray Mia, Performance direction by Phillip Breen, with Alan Cox as Tamburlaine, 2022.
+The Jew Of Malta, Directed/Produced by Ray Mia, Performance direction by Stephen Unwin, with Adrian Schiller as Barrabus, 2022.
+Tamburlaine The Great, Part 2, Directed/Produced by Ray Mia, Performance direction by Phillip Breen, with Alan Cox as Tamburlaine, 2022.
+Edward The Second, Directed/Produced by Ray Mia, Performance direction by Abigail Rokison, with Jack Holden as Edward II, 2022.
+The Massacre At Paris, Directed/Produced by Ray Mia, Performance direction by Abigail Rokison, with Michael Maloney as Guise, 2022.
+Dr Faustus, Directed/Produced by Ray Mia, Performance direction by Phillip Breen, with Dominic West as Faustus and Talulah Riley as Mephistopheles, 2022.
+The Poetry of Christopher Marlowe, Directed/Produced by Ray Mia, Performance direction by Philip Bird, read by Jack Holden, Fisayo Akinade and Philip Bird, 2022.
+
+Other stage
+
+ Tamburlaine. Yale University, 1919.
+ Tamburlaine, directed by Tyrone Guthrie, with Donald Wolfit as Tamburlaine. The Old Vic, 1951.
+ Doctor Faustus, co-directed by Orson Welles and John Houseman, with Welles as Faustus and Jack Carter as Mephistopheles. Maxine Elliott's Theatre, 1937. 
+ Doctor Faustus, directed by Adrian Noble. Royal Exchange, 1981.
+ Edward II, directed by Toby Robertson, with John Barton as Edward. Cambridge, 1951.
+ Edward II, directed by Toby Robertson, with Derek Jacobi as Edward. Cambridge, 1958.
+ Edward II, directed by Toby Robertson, with Ian McKellen as Edward. Assembly Rooms, 1969.
+ Edward II, directed by Jim Stone, Washington Stage Company, 1993;
+ Edward II, directed by Jozsef Ruszt. Budapest, 1998;
+ Edward II, directed by Michael Grandage, with Joseph Fiennes as Edward. Crucible Theatre, 2001.
+ The Massacre in Paris, directed by Patrice Chéreau. France, 1972.
+
+Stage adaptations
+
+ Edward II, Phoenix Society, London, 1923. 
+ Leben Eduards des Zweiten von England, by Bertolt Brecht (the first play he directed). Munich Chamber Theatre, Germany, 1924.
+ The Life of Edward II of England, by Marlowe and Bertold Brecht, directed by Frank Dunlop. National Theatre, 1968. 
+ Edward II, adapted as a ballet, choreographed by David Bintley. Stuttgart Ballet, 1995.  
+ Doctor Faustus, additional text by Colin Teevan, directed by Jamie Lloyd, with Kit Harington as Faustus. Duke of York's Theatre, 2016. 
+ Faustus, That Damned Woman by Chris Bush, directed by Caroline Byrne. Lyric Theatre, 2020.
+
+Film
+
+ Doctor Faustus, based on Nevill Coghill's 1965 production, adapted for Richard Burton and Elizabeth Taylor, 1967.
+ Edward II, directed by Derek Jarman, 1991.
+ Faust, with some Marlowe dialogue, directed by Jan Švankmajer, 1994.
+
+Notes
+
+References
+
+Sources
+ 
+  Via Google Books
+
+Further reading
+
+ Bevington, David, and Eric Rasmussen, eds. Doctor Faustus and Other Plays. Oxford English Drama. Oxford University Press, 1998. 
+ Conrad, B. Der wahre Shakespeare: Christopher Marlowe. (German non-Fiction book) 5th Edition, 2016. 
+ Cornelius R. M. Christopher Marlowe's Use of the Bibleu. New York: P. Lang, 1984.
+ Marlowe, Christopher. Complete Works. Vol. 3: Edward II., ed. R. Rowland. Oxford: Clarendon Press, 1994. (pp. xxii–xxiii)
+ Oz, Avraham, ed. Marlowe. New Casebooks. Houndmills, Basingstoke and London: Palgrave/Macmillan, 2003. 
+ Parker, John. The Aesthetics of Antichrist: From Christian Drama to Christopher Marlowe. Ithaca: Cornell University Press, 2007. 
+ Shepard, Alan. Marlowe's Soldiers: Rhetorics of Masculinity in the Age of the Armada, Ashgate, 2002. 
+ Sim, James H. Dramatic Uses of Biblical Allusions in Marlowe and Shakespeare, Gainesville: University of Florida Press, 1966.
+ 
+ Wraight A. D.; Stern, Virginia F. In Search of Christopher Marlowe: A Pictorial Biography, London: Macdonald, 1965.
+
+External links
+
+ 
+ 
+ 
+ 
+ The Marlowe Society
+ The works of Marlowe at Perseus Project
+ The complete works , with modernised spelling, on Peter Farey's Marlowe page.
+ BBC audio file. In Our Time Radio 4 discussion programme on Marlowe and his work
+ The Marlowe Bibliography Online is an initiative of the Marlowe Society of America and the University of Melbourne. Its purpose is to facilitate scholarship on the works of Christopher Marlowe by providing a searchable annotated bibliography of relevant scholarship
+ 
+
+ 
+1564 births
+1593 crimes
+1593 deaths
+16th-century English dramatists and playwrights
+16th-century English poets
+16th-century spies
+Pre–17th-century atheists
+16th-century translators
+Alumni of Corpus Christi College, Cambridge
+Deaths by stabbing in England
+English male dramatists and playwrights
+English male poets
+English murder victims
+English Renaissance dramatists
+English spies
+ 
+People educated at The King's School, Canterbury
+Writers from Canterbury
+People murdered in England
+People of the Elizabethan era
+University Wits
+Latin–English translators
+Cricket is a bat-and-ball sport contested by two teams.
+
+Cricket also commonly refers to:
+
+ Cricket (insect)
+
+Cricket(s) or The Cricket(s) may also refer to:
+
+Film and television
+ The Cricket (1917 film), a silent American drama film
+ The Cricket (1980 film), an erotic drama film
+ Crickets (film), a 2006 Japanese drama film
+ Christine Blair or Cricket, a character in The Young and the Restless
+ Cricket, a character in To Have and Have Not
+ Matthew "Rickety Cricket" Mara, a character in It's Always Sunny in Philadelphia
+ Cricket, a character in Big City Greens
+ "Cricket", 5th episode of Servant (TV Series)
+
+Literature
+Cricket (magazine), an American literary magazine for children
+The Cricket (magazine), a 1960s music magazine
+"Chrząszcz"  or "Cricket", a poem by Jan Brzechwa
+ Cricket, a character in Fire on the Mountain
+
+Music
+ The Crickets, a rock and roll band formed by Buddy Holly
+ Cricket (musical), a musical by Andrew Lloyd Webber and Tim Rice
+ Crickets (album), by Joe Nichols, 2013
+ Cricket (producer), Kosovo-Albanian record producer
+ Crickets, a video album by Dredg released alongside their 2002 album El Cielo
+ "Crickets", a song by Drop City Yacht Club
+ "Cricket", a song by the Kinks from Preservation Act 1
+
+Vehicles
+Cricket (1914 automobile), an early American automobile
+Plymouth Cricket (disambiguation), two automobiles
+Cricket-class coastal destroyer, a 1906 class of Royal Navy ships
+HMS Cricket (1915), an Insect-class gunboat
+HMS Cricket (shore establishment), Hampshire, 1943-1946
+
+Other uses 
+ Cricket (darts), a game using the standard 20-number dartboard
+ Cricket (roofing), a ridge structure designed to divert water on a roof
+ Cricket (series), a series of cricket video games
+ Cricket (warning sound), an audible warning in the cockpits of commercial aircraft
+ Cricket dolls, a talking doll released by Playmates Toys in 1986
+ Cricket, North Carolina
+ Cricket Wireless, wireless service provider, a subsidiary of AT&T Inc.
+ Programmable Cricket, robotic toys
+ Clicker or cricket, a noisemaker
+ Cricket, a variation of the float breakdancing technique
+ Cricket, a data collection software on top of RRDtool
+
+See also 
+Colomban Cri-cri, a light plane
+ Cricket House and Cricket Park, in Cricket St Thomas, England
+HMS Cricket, a list of Royal Navy ships
+ Shturcite, a Bulgarian band, translated as The Crickets, or an album by them
+ Tettigoniidae, known as katydids or bush-crickets
+ Cricut, a cutting machine for home crafters
+Caving –  also known as spelunking in the United States and Canada and potholing in the United Kingdom and Ireland – is the recreational pastime of exploring wild cave systems (as distinguished from show caves). In contrast, speleology is the scientific study of caves and the cave environment.
+
+The challenges involved in caving vary according to the cave being visited; in addition to the total absence of light beyond the entrance, negotiating pitches, squeezes, and water hazards can be difficult. Cave diving is a distinct, and more hazardous, sub-speciality undertaken by a small minority of technically proficient cavers. In an area of overlap between recreational pursuit and scientific study, the most devoted and serious-minded cavers become accomplished at the surveying and mapping of caves and the formal publication of their efforts. These are usually published freely and publicly, especially in the UK and other European countries, although in the US, these are generally private. 
+
+Sometimes categorized as an "extreme sport", it is not commonly considered as such by longtime enthusiasts, who may dislike the term for its connotation of disregard for safety.
+
+Many caving skills overlap with those involved in canyoning and mine and urban exploration.
+
+Motivation 
+Caving is often undertaken for the enjoyment of the outdoor activity or for physical exercise, as well as original exploration, similar to mountaineering or diving. Physical or biological science is also an important goal for some cavers, while others are engaged in cave photography. Virgin cave systems comprise some of the last unexplored regions on Earth and much effort is put into trying to locate, enter and survey them. In well-explored regions (such as most developed nations), the most accessible caves have already been explored, and gaining access to new caves often requires cave digging or cave diving.
+
+One old technique used by hill people in the United States to find caves worth exploring was to yell into a hole and listen for an echo.  On finding a hole, the size of which did not matter, the would-be cave explorer would yell into the opening and listen for an echo.  If there was none, the hole was just a hole.  If there was an echo, the size of the cave could be determined by the length and strength of the echoes.  This method is simple, cheap, and effective.  The explorer could then enlarge the hole to make an entrance.  Meriwether Lewis, of the Lewis and Clark Expedition, used the yelling technique to find caves in Kentucky when he was a boy.  Since caves were dark, and flashlights had not been invented, Lewis, and other explorers, made torches out of knots of pine tree branches.  Such torches burned a long time and cast a bright light.
+
+Caving, in certain areas, has also been utilized as a form of eco and adventure tourism, for example in New Zealand. Tour companies have established an industry leading and guiding tours into and through caves. Depending on the type of cave and the type of tour, the experience could be adventure-based or ecological-based. There are tours led through lava tubes by a guiding service (e.g. Lava River Cave, the oceanic islands of Tenerife, Iceland and Hawaii).
+
+Caving has also been described as an "individualist's team sport" by some, as cavers can often make a trip without direct physical assistance from others but will generally go in a group for companionship or to provide emergency help if needed. Some however consider the assistance cavers give each other as a typical team sport activity.
+
+Etymology 
+The term Potholing refers to the act of exploring potholes, a word originating in the north of England for predominantly vertical caves.
+Clay Perry, an American caver of the 1940s, wrote about a group of men and boys who explored and studied caves throughout New England. This group referred to themselves as spelunkers, a term derived from the Latin  ("cave, cavern, den"), itself from the Greek  spēlynks ("cave"). This is regarded as the first use of the word in the Americas. Throughout the 1950s, spelunking was the general term used for exploring caves in US English. It was used freely, without any positive or negative connotations, although only rarely outside the US.
+
+In the 1960s, the terms spelunking and spelunker began to be considered déclassé among experienced enthusiasts. In 1985, Steve Knutson – editor of the National Speleological Society (NSS) publication American Caving Accidents – made the following distinction:
+
+This sentiment is exemplified by bumper stickers and T-shirts displayed by some cavers: "Cavers rescue spelunkers". Nevertheless, outside the caving community, "spelunking" and "spelunkers" predominately remain neutral terms referring to the practice and practitioners, without any respect to skill level.
+
+History 
+In the mid-nineteenth century, John Birkbeck explored potholes in England, notably Gaping Gill in 1842 and Alum Pot in 1847–8, returning there in the 1870s. In the mid-1880s, Herbert E. Balch began exploring Wookey Hole Caves and in the 1890s, Balch was introduced to the caves of the Mendip Hills. One of the oldest established caving clubs, Yorkshire Ramblers' Club, was founded in 1892.
+
+Caving as a specialized pursuit was pioneered by Édouard-Alfred Martel (1859–1938), who first achieved the descent and exploration of the Gouffre de Padirac, in France, as early as 1889 and the first complete descent of a 110-metre wet vertical shaft at Gaping Gill in 1895. He developed his own techniques based on ropes and metallic ladders. Martel visited Kentucky and notably Mammoth Cave National Park in October 1912. In the 1920s famous US caver Floyd Collins made important explorations in the area and in the 1930s, as caving became increasingly popular, small exploration teams both in the Alps and in the karstic high plateaus of southwest France (Causses and Pyrenees) transformed cave exploration into both a scientific and recreational activity. Robert de Joly,  Guy de Lavaur  and Norbert Casteret were prominent figures of that time, surveying mostly caves in Southwest France.  During World War II, an alpine team composed of Pierre Chevalier, Fernand Petzl, Charles Petit-Didier and others explored the Dent de Crolles cave system near Grenoble, which became the deepest explored system in the world (-658m) at that time. The lack of available equipment during the war forced Pierre Chevalier and the rest of the team to develop their own equipment, leading to technical innovation. The scaling-pole (1940), nylon ropes (1942), use of explosives in caves (1947) and mechanical rope-ascenders (Henri Brenot's "monkeys", first used by Chevalier and Brenot in a cave in 1934) can be directly associated to the exploration of the Dent de Crolles cave system.
+
+In 1941, American cavers organized themselves into the National Speleological Society (NSS) to advance the exploration, conservation, study and understanding of caves in the United States. American caver Bill Cuddington, known as "Vertical Bill", further developed the single-rope technique (SRT) in the late 1950s. In 1958, two Swiss alpinists, Juesi and Marti teamed together, creating the first rope ascender known as the Jumar. In 1968 Bruno Dressler asked Fernand Petzl, who worked as a metals machinist, to build a rope-ascending tool, today known as the Petzl Croll, that he had developed by adapting the Jumar to vertical caving. Pursuing these developments, Petzl started in the 1970s a caving equipment manufacturing company named Petzl.  The development of the rappel rack and the evolution of mechanical ascension systems extended the practice and safety of vertical exploration to a wider range of cavers.
+
+Practice and equipment 
+
+Hard hats are worn to protect the head from bumps and falling rocks. The caver's primary light source is usually mounted on the helmet in order to keep the hands free. Electric LED lights are most common. Many cavers carry two or more sources of light – one as primary and the others as backup in case the first fails.  More often than not, a second light will be mounted to the helmet for quick transition if the primary fails. Carbide lamp systems are an older form of illumination, inspired by miner's equipment, and are still used by some cavers, particularly on remote expeditions where electric charging facilities are not available.
+
+The type of clothes worn underground varies according to the environment of the cave being explored, and the local culture. In cold caves, the caver may wear a warm base layer that retains its insulating properties when wet, such as a fleece ("furry") suit or polypropylene underwear, and an oversuit of hard-wearing (e.g., cordura) or waterproof (e.g., PVC) material. Lighter clothing may be worn in warm caves, particularly if the cave is dry, and in tropical caves thin polypropylene clothing is used, to provide some abrasion protection while remaining as cool as possible. Wetsuits may be worn if the cave is particularly wet or involves stream passages.  On the feet boots are worn – hiking-style boots in drier caves, or rubber boots (such as wellies) often with neoprene socks ("wetsocks") in wetter caves. Knee-pads (and sometimes elbow-pads) are popular for protecting joints during crawls. Depending on the nature of the cave, gloves are sometimes worn to protect the hands against abrasion or cold.  In pristine areas and for restoration, clean oversuits and powder-free, non-latex surgical gloves are used to protect the cave itself from contaminants.
+Ropes are used for descending or ascending pitches (single rope technique or SRT) or for protection. Knots commonly used in caving are the figure-of-eight- (or figure-of-nine-) loop, bowline, alpine butterfly, and Italian hitch. Ropes are usually rigged using bolts, slings, and carabiners. In some cases cavers may choose to bring and use a flexible metal ladder.
+
+In addition to the equipment already described, cavers frequently carry packs containing first-aid kits, emergency equipment, and food. Containers for securely transporting urine are also commonly carried.  On longer trips, containers for securely transporting feces out of the cave are carried.
+
+During very long trips, it may be necessary to camp in the cave – some cavers have stayed underground for many days, or in particularly extreme cases, for weeks at a time. This is particularly the case when exploring or mapping extensive cave systems, where it would be impractical to retrace the route back to the surface regularly. Such long trips necessitate the cavers carrying provisions, sleeping, and cooking equipment.
+
+Safety 
+
+Caves can be dangerous places; hypothermia, falling, flooding, falling rocks and physical exhaustion are the main risks. Rescuing people from underground is difficult and time-consuming, and requires special skills, training, and equipment. Full-scale cave rescues often involve the efforts of dozens of rescue workers (often other long-time cavers who have participated in specialized courses, as normal rescue staff are not sufficiently experienced in cave environments), who may themselves be put in jeopardy in effecting the rescue. This said, caving is not necessarily a high-risk sport (especially if it does not involve difficult climbs or diving). As in all physical sports, knowing one's limitations is key.
+
+Caving in warmer climates carries the risk of contracting histoplasmosis, a fungal infection that is contracted from bird or bat droppings. It can cause pneumonia and can disseminate in the body to cause continued infections.
+
+In many parts of the world, leptospirosis ("a type of bacterial infection spread by animals" including rats) is a distinct threat due to the presence of rat urine in rainwater or precipitation that enters the caves water system. Complications are uncommon, but can be serious.
+Safety risks while caving can be minimized by using a number of techniques:
+
+Checking that there is no danger of flooding during the expedition. Rainwater funneled underground can flood a cave very quickly, trapping people in cut-off passages and drowning them. In the UK, drowning accounts for almost half of all caving fatalities (see List of UK caving fatalities).
+Using teams of several cavers, preferably at least four. If an injury occurs, one caver stays with the injured person while the other two go out for help, providing assistance to each other on their way out.
+Notifying people outside the cave as to the intended return time. After an appropriate delay without a return, these will then organize a search party (usually made up by other cavers trained in cave rescues, as even professional emergency personnel are unlikely to have the skills to effect a rescue in difficult conditions).
+Use of helmet-mounted lights (hands-free) with extra batteries. American cavers recommend a minimum of three independent sources of light per person, but two lights is common practice among European cavers. 
+Sturdy clothing and footwear, as well as a helmet, are necessary to reduce the impact of abrasions, falls, and falling objects. Synthetic fibers and woolens, which dry quickly, shed water, and are warm when wet, are vastly preferred to cotton materials, which retain water and increase the risk of hypothermia. It is also helpful to have several layers of clothing, which can be shed (and stored in the pack) or added as needed. In watery cave passages, polypropylene thermal underwear or wetsuits may be required to avoid hypothermia.
+Cave passages look different from different directions. In long or complex caves, even experienced cavers can become lost. To reduce the risk of becoming lost, it is necessary to memorize the appearance of key navigational points in the cave as they are passed by the exploring party. Each member of a cave party shares responsibility for being able to remember the route out of the cave. In some caves it may be acceptable to mark a small number of key junctions with small stacks or "cairns" of rocks, or to leave a non-permanent mark such as high-visibility flagging tape tied to a projection.
+Vertical caving uses ladders or single rope technique (SRT) to avoid the need for climbing passages that are too difficult. SRT is a complex skill and requires proper training and well-maintained equipment. Some drops that are abseiled down may be as deep as several hundred meters (for example Harwoods Hole).
+
+Cave conservation
+Many cave environments are very fragile.  Many speleothems can be damaged by even the slightest touch and some by impacts as slight as a breath. Research suggests that increased carbon dioxide levels can lead to "a higher equilibrium concentration of calcium within the drip waters feeding the speleothems, and hence causes dissolution of existing features."  In 2008, researchers found evidence that respiration from cave visitors may generate elevated carbon dioxide concentrations in caves, leading to increased temperatures of up to 3 °C and a dissolution of existing features.
+
+Pollution is also of concern.  Since water that flows through a cave eventually comes out in streams and rivers, any pollution may ultimately end up in someone's drinking water, and can even seriously affect the surface environment, as well.  Even minor pollution such as dropping organic material can have a dramatic effect on the cave biota.
+
+Cave-dwelling species are also very fragile, and often, a particular species found in a cave may live within that cave alone, and be found nowhere else in the world, such as Alabama cave shrimp.  Cave-dwelling species are accustomed to a near-constant climate of temperature and humidity, and any disturbance can be disruptive to the species' life cycles. Though cave wildlife may not always be immediately visible, it is typically nonetheless present in most caves.
+
+Bats are one such fragile species of cave-dwelling animal. Bats which hibernate are most vulnerable during the winter season, when no food supply exists on the surface to replenish the bat's store of energy should it be awakened from hibernation. Bats which migrate are most sensitive during the summer months when they are raising their young.  For these reasons, visiting caves inhabited by hibernating bats is discouraged during cold months; and visiting caves inhabited by migratory bats is discouraged during the warmer months when they are most sensitive and vulnerable.  Due to an affliction affecting bats in the northeastern US known as white nose syndrome (WNS), the US Fish & Wildlife Service has called for a moratorium effective March 26, 2009, on caving activity in states known to have hibernacula (MD, NY, VT, NH, MA, CT, NJ, PA, VA, and WV) affected by WNS, as well as adjoining states.
+
+Some cave passages may be marked with flagging tape or other indicators to show biologically, aesthetically, or archaeologically sensitive areas. Marked paths may show ways around notably fragile areas such as a pristine floor of sand or silt which may be thousands of years old, dating from the last time water flowed through the cave. Such deposits may easily be spoiled forever by a single misplaced step. Active formations such as flowstone can be similarly marred with a muddy footprint or handprint, and ancient human artifacts, such as fiber products, may even crumble to dust under all but the most gentle touch.
+
+In 1988, concerned that cave resources were becoming increasingly damaged through unregulated use, Congress enacted the Federal Cave Resources Protection Act, giving land management agencies in the United States expanded authority to manage cave conservation on public land.
+
+Caving organizations 
+
+Cavers in many countries have created organizations for the administration and oversight of caving activities within their nations. The oldest of these is the French Federation of Speleology (originally Société de spéléologie) founded by Édouard-Alfred Martel in 1895, which produced the first periodical journal in speleology, Spelunca. The first University-based speleological institute in the world was founded in 1920 in Cluj-Napoca, Romania, by Emil Racovita, a Romanian biologist, zoologist, speleologist and explorer of Antarctica.
+
+The British Speleological Association was established in 1935 and the National Speleological Society in the US was founded in 1941 (originally formed as the Speleological Society of the District of Columbia on May 6, 1939).
+
+An international speleological congress was proposed at a meeting in Valence-sur-Rhone, France in 1949 and first held in 1953 in Paris. The International Union of Speleology (UIS) was founded in 1965.
+
+See also
+
+References 
+
+ 
+
+ro:Speologie
+vi:Thám hiểm hang động
+A cave or cavern is a natural void in the ground, specifically a space large enough for a human to enter. Caves often form by the weathering of rock and often extend deep underground. The word cave can refer to smaller openings such as sea caves, rock shelters, and grottos, that extend a relatively short distance into the rock and they are called exogene caves. Caves which extend further underground than the opening is wide are called endogene caves.
+
+Speleology is the science of exploration and study of all aspects of caves and the cave environment. Visiting or exploring caves for recreation may be called caving, potholing, or spelunking.
+
+Formation types
+The formation and development of caves is known as speleogenesis; it can occur over the course of millions of years. Caves can range widely in size, and are formed by various geological processes. These may involve a combination of chemical processes, erosion by water, tectonic forces, microorganisms, pressure, and atmospheric influences. Isotopic dating techniques can be applied to cave sediments, to determine the timescale of the geological events which formed and shaped present-day caves.
+
+It is estimated that a cave cannot be more than  vertically beneath the surface due to the pressure of overlying rocks. This does not, however, impose a maximum depth for a cave which is measured from its highest entrance to its lowest point, as the amount of rock above the lowest point is dependent on the topography of the landscape above it. For karst caves the maximum depth is determined on the basis of the lower limit of karst forming processes, coinciding with the base of the soluble carbonate rocks. Most caves are formed in limestone by dissolution.
+
+Caves can be classified in various other ways as well, including a contrast between active and relict: active caves have water flowing through them; relict caves do not, though water may be retained in them. Types of active caves include inflow caves ("into which a stream sinks"), outflow caves ("from which a stream emerges"), and through caves ("traversed by a stream").
+
+Solutional
+
+Solutional caves or karst caves are the most frequently occurring caves. Such caves form in rock that is soluble; most occur in limestone, but they can also form in other rocks including chalk, dolomite, marble, salt, and gypsum. Except for salt caves, solutional caves result when rock is dissolved by natural acid in groundwater that seeps through bedding planes, faults, joints, and comparable features. Over time cracks enlarge to become caves and cave systems.
+
+The largest and most abundant solutional caves are located in limestone. Limestone dissolves under the action of rainwater and groundwater charged with H2CO3 (carbonic acid) and naturally occurring organic acids. The dissolution process produces a distinctive landform known as karst, characterized by sinkholes and underground drainage. Limestone caves are often adorned with calcium carbonate formations produced through slow precipitation. These include flowstones, stalactites, stalagmites, helictites, soda straws and columns. These secondary mineral deposits in caves are called speleothems.
+
+The portions of a solutional cave that are below the water table or the local level of the groundwater will be flooded.
+
+Lechuguilla Cave in New Mexico and nearby Carlsbad Cavern are now believed to be examples of another type of solutional cave. They were formed by H2S (hydrogen sulfide) gas rising from below, where reservoirs of oil give off sulfurous fumes. This gas mixes with groundwater and forms H2SO4 (sulfuric acid). The acid then dissolves the limestone from below, rather than from above, by acidic water percolating from the surface.
+
+Primary
+
+Caves formed at the same time as the surrounding rock are called primary caves.
+
+Lava tubes are formed through volcanic activity and are the most common primary caves. As lava flows downhill, its surface cools and solidifies. Hot liquid lava continues to flow under that crust, and if most of it flows out, a hollow tube remains. Such caves can be found in the Canary Islands, Jeju-do, the basaltic plains of Eastern Idaho, and in other places. Kazumura Cave near Hilo, Hawaii is a remarkably long and deep lava tube; it is .
+
+Lava caves include but are not limited to lava tubes. Other caves formed through volcanic activity include rifts, lava molds, open vertical conduits, inflationary, blisters, among others.
+
+Sea or littoral
+
+Sea caves are found along coasts around the world. A special case is littoral caves, which are formed by wave action in zones of weakness in sea cliffs. Often these weaknesses are faults, but they may also be dykes or bedding-plane contacts. Some wave-cut caves are now above sea level because of later uplift. Elsewhere, in places such as Thailand's Phang Nga Bay, solutional caves have been flooded by the sea and are now subject to littoral erosion. Sea caves are generally around  in length, but may exceed .
+
+Corrasional or erosional
+
+Corrasional or erosional caves are those that form entirely by erosion by flowing streams carrying rocks and other sediments. These can form in any type of rock, including hard rocks such as granite. Generally there must be some zone of weakness to guide the water, such as a fault or joint. A subtype of the erosional cave is the wind or aeolian cave, carved by wind-born sediments. Many caves formed initially by solutional processes often undergo a subsequent phase of erosional or vadose enlargement where active streams or rivers pass through them.
+
+Glacier
+
+Glacier caves are formed by melting ice and flowing water within and under glaciers. The cavities are influenced by the very slow flow of the ice, which tends to collapse the caves again. Glacier caves are sometimes misidentified as "ice caves", though this latter term is properly reserved for bedrock caves that contain year-round ice formations.
+
+Fracture
+Fracture caves are formed when layers of more soluble minerals, such as gypsum, dissolve out from between layers of less soluble rock. These rocks fracture and collapse in blocks of stone.
+
+Talus
+Talus caves are formed by the openings among large boulders that have fallen down into a random heap, often at the bases of cliffs. These unstable deposits are called talus or scree, and may be subject to frequent rockfalls and landslides.
+
+Anchialine
+
+Anchialine caves are caves, usually coastal, containing a mixture of freshwater and saline water (usually sea water). They occur in many parts of the world, and often contain highly specialized and endemic fauna.
+
+Physical patterns
+Branchwork caves resemble surface dendritic stream patterns; they are made up of passages that join downstream as tributaries. Branchwork caves are the most common of cave patterns and are formed near sinkholes where groundwater recharge occurs. Each passage or branch is fed by a separate recharge source and converges into other higher order branches downstream.
+Angular network caves form from intersecting fissures of carbonate rock that have had fractures widened by chemical erosion. These fractures form high, narrow, straight passages that persist in widespread closed loops.
+Anastomotic caves largely resemble surface braided streams with their passages separating and then meeting further down drainage. They usually form along one bed or structure, and only rarely cross into upper or lower beds.
+Spongework caves are formed when solution cavities are joined by mixing of chemically diverse water. The cavities form a pattern that is three-dimensional and random, resembling a sponge.
+Ramiform caves form as irregular large rooms, galleries, and passages. These randomized three-dimensional rooms form from a rising water table that erodes the carbonate rock with hydrogen-sulfide enriched water.
+Pit caves (vertical caves, potholes, or simply "pits") consist of a vertical shaft rather than a horizontal cave passage. They may or may not be associated with one of the above structural patterns.
+
+Geographic distribution
+
+Caves are found throughout the world, although the distribution of documented cave system is heavily skewed towards those countries where caving has been popular for many years (such as France, Italy, Australia, the UK, the United States, etc.). As a result, explored caves are found widely in Europe, Asia, North America and Oceania, but are sparse in South America, Africa, and Antarctica.
+
+This is a rough generalization, as large expanses of North America and Asia contain no documented caves, whereas areas such as the Madagascar dry deciduous forests and parts of Brazil contain many documented caves. As the world's expanses of soluble bedrock are researched by cavers, the distribution of documented caves is likely to shift. For example, China, despite containing around half the world's exposed limestone—more than —has relatively few documented caves.
+
+Records and superlatives
+The cave system with the greatest total length of surveyed passage is Mammoth Cave in Kentucky, US, at .
+The longest surveyed underwater cave, and second longest overall, is Sistema Ox Bel Ha in Yucatán, Mexico at .
+The deepest known cave—measured from its highest entrance to its lowest point—is Veryovkina Cave in Abkhazia, Georgia, with a depth of . This was the first cave to be explored to a depth of more than . (The first cave to be descended below  was Gouffre Berger in France.) The Sarma and Illyuzia-Mezhonnogo-Snezhnaya caves in Georgia, (, and  respectively) are the current second- and third-deepest caves. The deepest outside Georgia is Lamprechtsofen Vogelschacht Weg Schacht in Austria, which is  deep.
+The deepest vertical shaft in a cave is  in Vrtoglavica Cave in Slovenia. The second deepest is Ghar-e-Ghala at  in the Parau massif near Kermanshah in Iran.
+ The deepest underwater cave bottomed by a remotely operated underwater vehicle at , is the Hranice Abyss in the Czech Republic.
+The Miao Room is the world's largest known room by volume, with a measured volume of . The largest known room by surface is Sarawak Chamber, in the Gunung Mulu National Park (Miri, Sarawak, Borneo, Malaysia), a sloping, boulder strewn chamber with an area of . The largest room in a show cave is the Salle de la Verna in the French Pyrenees.
+The largest passage ever discovered is in the Son Doong Cave in Phong Nha-Kẻ Bàng National Park in Quảng Bình Province, Vietnam. It is  in length,  high and wide over most of its length, but over  high and wide for part of its length.
+
+Five longest surveyed
+
+ Mammoth Cave, Kentucky, US
+ Sistema Ox Bel Ha, Mexico
+ Sistema Sac Actun/Sistema Dos Ojos, Mexico
+ Jewel Cave, South Dakota, US
+ Shuanghedong Cave Network, China
+
+Ecology
+
+Cave-inhabiting animals are often categorized as troglobites (cave-limited species), troglophiles (species that can live their entire lives in caves, but also occur in other environments), trogloxenes (species that use caves, but cannot complete their life cycle fully in caves) and accidentals (animals not in one of the previous categories). Some authors use separate terminology for aquatic forms (for example, stygobites, stygophiles, and stygoxenes).
+
+Of these animals, the troglobites are perhaps the most unusual organisms. Troglobitic species often show a number of characteristics, termed troglomorphic, associated with their adaptation to subterranean life. These characteristics may include a loss of pigment (often resulting in a pale or white coloration), a loss of eyes (or at least of optical functionality), an elongation of appendages, and an enhancement of other senses (such as the ability to sense vibrations in water). Aquatic troglobites (or stygobites), such as the endangered Alabama cave shrimp, live in bodies of water found in caves and get nutrients from detritus washed into their caves and from the feces of bats and other cave inhabitants. Other aquatic troglobites include cave fish, and cave salamanders such as the olm and the Texas blind salamander.
+
+Cave insects such as Oligaphorura (formerly Archaphorura) schoetti are troglophiles, reaching  in length. They have extensive distribution and have been studied fairly widely. Most specimens are female, but a male specimen was collected from St Cuthberts Swallet in 1969.
+
+Bats, such as the gray bat and Mexican free-tailed bat, are trogloxenes and are often found in caves; they forage outside of the caves. Some species of cave crickets are classified as trogloxenes, because they roost in caves by day and forage above ground at night.
+
+Because of the fragility of cave ecosystems, and the fact that cave regions tend to be isolated from one another, caves harbor a number of endangered species, such as the Tooth cave spider, liphistius trapdoor spider, and the gray bat.
+
+Caves are visited by many surface-living animals, including humans. These are usually relatively short-lived incursions, due to the lack of light and sustenance.
+
+Cave entrances often have typical florae. For instance, in the eastern temperate United States, cave entrances are most frequently (and often densely) populated by the bulblet fern, Cystopteris bulbifera.
+
+Archaeological and cultural importance
+
+Throughout history, primitive peoples have made use of caves. The earliest human fossils found in caves come from a series of caves near Krugersdorp and Mokopane in South Africa. The cave sites of Sterkfontein, Swartkrans, Kromdraai B, Drimolen, Malapa, Cooper's D, Gladysvale, Gondolin and Makapansgat have yielded a range of early human species dating back to between three and one million years ago, including Australopithecus africanus, Australopithecus sediba and Paranthropus robustus. However, it is not generally thought that these early humans were living in the caves, but that they were brought into the caves by carnivores that had killed them.
+
+The first early hominid ever found in Africa, the Taung Child in 1924, was also thought for many years to come from a cave, where it had been deposited after being predated on by an eagle. However, this is now debated (Hopley et al., 2013; Am. J. Phys. Anthrop.). Caves do form in the dolomite of the Ghaap Plateau, including the Early, Middle and Later Stone Age site of Wonderwerk Cave; however, the caves that form along the escarpment's edge, like that hypothesised for the Taung Child, are formed within a secondary limestone deposit called tufa. There is numerous evidence for other early human species inhabiting caves from at least one million years ago in different parts of the world, including Homo erectus in China at Zhoukoudian, Homo rhodesiensis in South Africa at the Cave of Hearths (Makapansgat), Homo neanderthalensis and Homo heidelbergensis in Europe at Archaeological Site of Atapuerca, Homo floresiensis in Indonesia, and the Denisovans in southern Siberia.
+
+In southern Africa, early modern humans regularly used sea caves as shelter starting about 180,000 years ago when they learned to exploit the sea for the first time. The oldest known site is PP13B at Pinnacle Point. This may have allowed rapid expansion of humans out of Africa and colonization of areas of the world such as Australia by 60–50,000 years ago. Throughout southern Africa, Australia, and Europe, early modern humans used caves and rock shelters as sites for rock art, such as those at Giant's Castle. Caves such as the yaodong in China were used for shelter; other caves were used for burials (such as rock-cut tombs), or as religious sites (such as Buddhist caves). Among the known sacred caves are China's Cave of a Thousand Buddhas and the sacred caves of Crete.
+
+Caves and acoustics
+The importance of sound in caves predates a modern understanding of acoustics. Archaeologists have uncovered relationships between paintings of dots and lines, in specific areas of resonance, within the caves of Spain and France, as well as instruments depicting paleolithic motifs, indicators of musical events and rituals. Clusters of paintings were often found in areas with notable acoustics, sometimes even replicating the sounds of the animals depicted on the walls. The human voice was also theorized to be used as an echolocation device to navigate darker areas of the caves where torches were less useful. Dots of red ochre are often found in spaces with the highest resonance, where the production of paintings was too difficult.
+
+Caves continue to provide usage for modern-day explorers of acoustics. Today Cumberland Caverns provides one of the best examples for modern musical usages of caves. Not only are caves utilized for the reverberations, but for the dampening qualities of their abnormal faces as well. The irregularities in the walls of the Cumberland Caverns diffuse sounds bouncing off the walls and give the space and almost recording studio-like quality. During the 20th century musicians began to explore the possibility of using caves as locations as clubs and concert halls, including the likes of Dinah Shore, Roy Acuff, and Benny Goodman. Unlike today, these early performances were typically held in the mouths of the caves, as the lack of technology made depths of the interior inaccessible with musical equipment. In Luray Caverns, Virginia, a functioning organ has been developed that generates sound by mallets striking stalactites, each with a different pitch.
+
+See also
+
+References
+
+ 
+Erosion landforms
+Fluvial landforms
+Chinese numerals are words and characters used to denote numbers in written Chinese.
+
+Today, speakers of Chinese languages use three written numeral systems: the system of Arabic numerals used worldwide, and two indigenous systems. The more familiar indigenous system is based on Chinese characters that correspond to numerals in the spoken language. These may be shared with other languages of the Chinese cultural sphere such as Korean, Japanese, and Vietnamese. Most people and institutions in China primarily use the Arabic or mixed Arabic-Chinese systems for convenience, with traditional Chinese numerals used in finance, mainly for writing amounts on cheques, banknotes, some ceremonial occasions, some boxes, and on commercials.
+
+The other indigenous system consists of the Suzhou numerals, or huama, a positional system, the only surviving form of the rod numerals. These were once used by Chinese mathematicians, and later by merchants in Chinese markets, such as those in Hong Kong until the 1990s, but were gradually supplanted by Arabic numerals.
+
+Characters used as numerals
+
+The Chinese character numeral system consists of the Chinese characters used by the Chinese written language to write spoken numerals. Similar to spelling-out numbers in English (e.g., "one thousand nine hundred forty-five"), it is not an independent system per se. Since it reflects spoken language, it does not use the positional system as in Arabic numerals, in the same way that spelling out numbers in English does not.
+
+Ordinary numerals 
+There are characters representing the numbers zero through nine, and other characters representing larger numbers such as tens, hundreds, thousands, ten thousands and hundred millions. There are two sets of characters for Chinese numerals: one for everyday writing, known as  (), and one for use in commercial, accounting or financial contexts, known as  (). The latter arose because the characters used for writing numerals are geometrically simple, so simply using those numerals cannot prevent forgeries in the same way spelling numbers out in English would. A forger could easily change the everyday characters 三十 (30) to 五千 (5000) just by adding a few strokes. That would not be possible when writing using the financial characters 參拾 (30) and 伍仟 (5000). They are also referred to as "banker's numerals", "anti-fraud numerals", or "banker's anti-fraud numerals". For the same reason, rod numerals were never used in commercial records.
+
+Characters with regional usage
+
+Large numbers
+For numbers larger than 10,000, similarly to the long and short scales in the West, there have been four systems in ancient and modern usage. The original one, with unique names for all powers of ten up to the 14th, is ascribed to the Yellow Emperor in the 6th century book by Zhen Luan,  . In modern Chinese, only the second system is used, in which the same ancient names are used, but each represents a myriad, 萬  times the previous:
+
+In practice, this situation does not lead to ambiguity, with the exception of , which means 1012 according to the system in common usage throughout the Chinese communities as well as in Japan and Korea, but has also been used for 106 in recent years (especially in mainland China for megabyte). To avoid problems arising from the ambiguity, the PRC government never uses this character in official documents, but uses  (wànyì) or  instead. Partly due to this, combinations of  and  are often used instead of the larger units of the traditional system as well, for example  instead of . The ROC government in Taiwan uses  to mean 1012 in official documents.
+
+Large numbers from Buddhism 
+
+Numerals beyond  zǎi come from Buddhist texts in Sanskrit, but are mostly found in ancient texts. Some of the following words are still being used today, but may have transferred meanings.
+
+Small numbers
+The following are characters used to denote small order of magnitude in Chinese historically. With the introduction of SI units, some of them have been incorporated as SI prefixes, while the rest have fallen into disuse.
+
+Small numbers from Buddhism
+
+SI prefixes
+
+In the People's Republic of China, the early translation for the SI prefixes in 1981 was different from those used today. The larger (, , , , ) and smaller Chinese numerals (, , , , ) were defined as translation for the SI prefixes as mega, giga, tera, peta, exa, micro, nano,  pico,  femto,  atto, resulting in the creation of yet more values for each numeral.
+
+The Republic of China (Taiwan) defined  as the translation for mega and  as the translation for tera. This translation is widely used in official documents, academic communities, informational industries, etc. However, the civil broadcasting industries sometimes use 兆赫 to represent "megahertz".
+
+Today, the governments of both China and Taiwan use phonetic transliterations for the SI prefixes. However, the governments have each chosen different Chinese characters for certain prefixes. The following table lists the two different standards together with the early translation.
+
+Reading and transcribing numbers
+
+Whole numbers 
+Multiple-digit numbers are constructed using a multiplicative principle; first the digit itself (from 1 to 9), then the place (such as 10 or 100); then the next digit.
+
+In Mandarin, the multiplier  (liǎng) is often used rather than  (èr) for all numbers 200 and greater with the "2" numeral (although as noted earlier this varies from dialect to dialect and person to person). Use of both  (liǎng) or  (èr) are acceptable for the number 200. When writing in the Cantonese dialect,  (yi6) is used to represent the "2" numeral for all numbers.  In the southern Min dialect of Chaozhou (Teochew),  (no6) is used to represent the "2" numeral in all numbers from 200 onwards.  Thus:
+
+For the numbers 11 through 19, the leading "one" () is usually omitted.  In some dialects, like Shanghainese, when there are only two significant digits in the number, the leading "one" and the trailing zeroes are omitted.  Sometimes, the one before "ten" in the middle of a number, such as 213, is omitted.  Thus:
+
+Notes:
+ Nothing is ever omitted in large and more complicated numbers such as this.
+
+In certain older texts like the Protestant Bible or in poetic usage, numbers such as 114 may be written as [100] [10] [4] ().
+
+Outside of Taiwan, digits are sometimes grouped by myriads instead of thousands. Hence it is more convenient to think of numbers here as in groups of four, thus 1,234,567,890 is regrouped here as 12,3456,7890. Larger than a myriad, each number is therefore four zeroes longer than the one before it, thus 10000 ×  () =  (). If one of the numbers is between 10 and 19, the leading "one" is omitted as per the above point.  Hence (numbers in parentheses indicate that the number has been written as one number rather than expanded):
+
+In Taiwan, pure Arabic numerals are officially always and only grouped by thousands. Unofficially, they are often not grouped, particularly for numbers below 100,000. Mixed Arabic-Chinese numerals are often used in order to denote myriads. This is used both officially and unofficially, and come in a variety of styles:
+
+Interior zeroes before the unit position (as in 1002) must be spelt explicitly.  The reason for this is that trailing zeroes (as in 1200) are often omitted as shorthand, so ambiguity occurs.  One zero is sufficient to resolve the ambiguity.  Where the zero is before a digit other than the units digit, the explicit zero is not ambiguous and is therefore optional, but preferred.  Thus:
+
+Fractional values
+To construct a fraction, the denominator is written first, followed by , then the literary possessive particle , and lastly the numerator. This is the opposite of how fractions are read in English, which is numerator first. Each half of the fraction is written the same as a whole number.  For example, to express "two thirds", the structure "three parts of-this two" is used.  Mixed numbers are written with the whole-number part first, followed by , then the fractional part.
+
+Percentages are constructed similarly, using  as the denominator.  (The number 100 is typically expressed as , like the English "one hundred".  However, for percentages,  is used on its own.)
+
+Because percentages and other fractions are formulated the same, Chinese are more likely than not to express 10%, 20% etc. as "parts of 10" (or 1/10, 2/10, etc. i.e. ; shí fēnzhī yī, ; shí fēnzhī èr, etc.) rather than "parts of 100" (or 10/100, 20/100, etc. i.e. ; bǎi fēnzhī shí, ; bǎi fēnzhī èrshí, etc.)
+
+In Taiwan, the most common formation of percentages in the spoken language is the number per hundred followed by the word , a contraction of the Japanese ; pāsento, itself taken from the English "percent".  Thus 25% is ; èrshíwǔ pā.
+
+Decimal numbers are constructed by first writing the whole number part, then inserting a point (), and finally the fractional part. The fractional part is expressed using only the numbers for 0 to 9, similarly to English.
+
+ functions as a number and therefore requires a measure word. For example: .
+
+Ordinal numbers
+Ordinal numbers are formed by adding  ("sequence") before the number.
+
+The Heavenly Stems are a traditional Chinese ordinal system.
+
+Negative numbers
+Negative numbers are formed by adding fù () before the number.
+
+Usage
+
+Chinese grammar requires the use of classifiers (measure words) when a numeral is used together with a noun to express a quantity. For example, "three people" is expressed as , "three ( particle) person", where /  is a classifier. There exist many different classifiers, for use with different sets of nouns, although / is the most common, and may be used informally in place of other classifiers.
+
+Chinese uses cardinal numbers in certain situations in which English would use ordinals. For example,  (literally "three story/storey") means "third floor" ("second floor" in British ). Likewise,  (literally "twenty-one century") is used for "21st century".
+
+Numbers of years are commonly spoken as a sequence of digits, as in  ("two zero zero one") for the year 2001. Names of months and days (in the Western system) are also expressed using numbers:  ("one month") for January, etc.; and  ("week one") for Monday, etc. There is only one exception: Sunday is , or informally , both literally "week day". When meaning "week", ""  and ""  are interchangeable. ""  or ""  means "day of worship". Chinese Catholics call Sunday "" , "Lord's day".
+
+Full dates are usually written in the format 2001年1月20日 for January 20, 2001 (using  "year",  "month", and  "day") – all the numbers are read as cardinals, not ordinals, with no leading zeroes, and the year is read as a sequence of digits. For brevity the ,  and  may be dropped to give a date composed of just numbers.  For example "6-4" in Chinese is "six-four", short for "month six, day four" i.e. June Fourth, a common Chinese shorthand for the 1989 Tiananmen Square protests (because of the violence that occurred on June 4). For another example 67, in Chinese is sixty seven, short for year nineteen sixty seven, a common Chinese shorthand for the Hong Kong 1967 leftist riots.
+
+Counting rod and Suzhou numerals 
+
+In the same way that Roman numerals were standard in ancient and medieval Europe for mathematics and commerce, the Chinese formerly used the rod numerals, which is a positional system. The Suzhou numerals () system is a variation of the Southern Song rod numerals. Nowadays, the huāmǎ system is only used for displaying prices in Chinese markets or on traditional handwritten invoices.
+
+Hand gestures
+
+There is a common method of using of one hand to signify the numbers one to ten. While the five digits on one hand can easily express the numbers one to five, six to ten have special signs that can be used in commerce or day-to-day communication.
+
+Historical use of numerals in China
+ 
+
+Most Chinese numerals of later periods were descendants of the Shang dynasty oracle numerals of the 14th century BC. The oracle bone script numerals were found on tortoise shell and animal bones. In early civilizations, the Shang were able to express any numbers, however large, with only nine symbols and a counting board though it was still not positional .
+
+Some of the bronze script numerals such as 1, 2, 3, 4, 10, 11, 12, and 13 became part of the system of rod numerals.
+
+In this system, horizontal rod numbers are used for the tens, thousands, hundred thousands etc.  It is written in Sunzi Suanjing that "one is vertical, ten is horizontal".
+
+The counting rod numerals system has place value and decimal numerals for computation, and was used widely by Chinese merchants, mathematicians and astronomers from the Han dynasty to the 16th century.
+
+In 690 AD, Empress Wǔ promulgated Zetian characters, one of which was "〇". The word is now used as a synonym for the number zero.
+
+Alexander Wylie, Christian missionary to China, in 1853 already refuted the notion that "the Chinese numbers were written in words at length", and stated that in ancient China, calculation was carried out by means of counting rods, and "the written character is evidently a rude presentation of these". After being introduced to the rod numerals, he said "Having thus obtained a simple but effective system of figures, we find the Chinese in actual use of a method of notation depending on the theory of local value [i.e. place-value], several centuries before such theory was understood in Europe, and while yet the science of numbers had scarcely dawned among the Arabs."
+
+During the Ming and Qing dynasties (after Arabic numerals were introduced into China), some Chinese mathematicians used Chinese numeral characters as positional system digits. After the Qing period, both the Chinese numeral characters and the Suzhou numerals were replaced by Arabic numerals in mathematical writings.
+
+Cultural influences 
+
+Traditional Chinese numeric characters are also used in Japan and Korea and were used in Vietnam before the 20th century. In vertical text (that is, read top to bottom), using characters for numbers is the norm, while in horizontal text, Arabic numerals are most common. Chinese numeric characters are also used in much the same formal or decorative fashion that Roman numerals are in Western cultures. Chinese numerals may appear together with Arabic numbers on the same sign or document.
+
+See also 
+
+ Chinese number gestures
+ Numbers in Chinese culture
+ Chinese units of measurement
+ Chinese classifier
+ Chinese grammar
+ Japanese numerals
+ Korean numerals
+ Vietnamese numerals
+ Celestial stem
+ List of numbers in Sinitic languages
+
+Notes
+
+References 
+
+Numerals
+Chinese characters
+Chinese mathematics
+A computer program is a sequence or set of instructions in a programming language for a computer to execute. It is one component of software, which also includes documentation and other intangible components.
+
+A computer program in its human-readable form is called source code. Source code needs another computer program to execute because computers can only execute their native machine instructions. Therefore, source code may be translated to machine instructions using the language's compiler. (Assembly language programs are translated using an assembler.) The resulting file is called an executable. Alternatively, source code may execute within the language's interpreter.
+
+If the executable is requested for execution, then the operating system loads it into memory and starts a process. The central processing unit will soon switch to this process so it can fetch, decode, and then execute each machine instruction.
+
+If the source code is requested for execution, then the operating system loads the corresponding interpreter into memory and starts a process. The interpreter then loads the source code into memory to translate and execute each statement. Running the source code is slower than running an executable. Moreover, the interpreter must be installed on the computer.
+
+Example computer program
+
+The "Hello, World!" program is used to illustrate a language's basic syntax. The syntax of the language BASIC (1964) was intentionally limited to make the language easy to learn. For example, variables are not declared before being used. Also, variables are automatically initialized to zero. Here is an example computer program, in Basic, to average a list of numbers:
+10 INPUT "How many numbers to average?", A
+20 FOR I = 1 TO A
+30 INPUT "Enter number:", B
+40 LET C = C + B
+50 NEXT I
+60 LET D = C/A
+70 PRINT "The average is", D
+80 END
+
+Once the mechanics of basic computer programming are learned, more sophisticated and powerful languages are available to build large computer systems.
+
+History
+
+Improvements in software development are the result of improvements in computer hardware. At each stage in hardware's history, the task of computer programming changed dramatically.
+
+Analytical Engine
+
+In 1837, Jacquard's loom inspired Charles Babbage to attempt to build the Analytical Engine.
+The names of the components of the calculating device were borrowed from the textile industry. In the textile industry, yarn was brought from the store to be milled. The device had a "store" which consisted of memory to hold 1,000 numbers of 50 decimal digits each. Numbers from the "store" were transferred to the "mill" for processing. It was programmed using two sets of perforated cards. One set directed the operation and the other set inputted the variables. However, the thousands of cogged wheels and gears never fully worked together, even after Babbage spent more than £17,000 of government money.
+
+Ada Lovelace worked for Charles Babbage to create a description of the Analytical Engine (1843). The description contained Note G which completely detailed a method for calculating Bernoulli numbers using the Analytical Engine. This note is recognized by some historians as the world's first computer program.  Other historians consider Babbage himself wrote the first computer program for the Analytical Engine. It listed a sequence of operations to compute the solution for a system of two linear equations.
+
+Universal Turing machine
+
+In 1936, Alan Turing introduced the Universal Turing machine, a theoretical device that can model every computation.
+It is a finite-state machine that has an infinitely long read/write tape. The machine can move the tape back and forth, changing its contents as it performs an algorithm. The machine starts in the initial state, goes through a sequence of steps, and halts when it encounters the halt state. All present-day computers are Turing complete.
+
+ENIAC
+
+The Electronic Numerical Integrator And Computer (ENIAC) was built between July 1943 and Fall 1945. It was a Turing complete, general-purpose computer that used 17,468 vacuum tubes to create the circuits. At its core, it was a series of Pascalines wired together. Its 40 units weighed 30 tons, occupied , and consumed $650 per hour (in 1940s currency) in electricity when idle. It had 20 base-10 accumulators. Programming the ENIAC took up to two months. Three function tables were on wheels and needed to be rolled to fixed function panels. Function tables were connected to function panels by plugging heavy black cables into plugboards. Each function table had 728 rotating knobs. Programming the ENIAC also involved setting some of the 3,000 switches. Debugging a program took a week. It ran from 1947 until 1955 at Aberdeen Proving Ground, calculating hydrogen bomb parameters, predicting weather patterns, and producing firing tables to aim artillery guns.
+
+Stored-program computers
+Instead of plugging in cords and turning switches, a stored-program computer loads its instructions into memory just like it loads its data into memory. As a result, the computer could be programmed quickly and perform calculations at very fast speeds. Presper Eckert and John Mauchly built the ENIAC. The two engineers introduced the stored-program concept in a three-page memo dated February 1944. Later, in September 1944, Dr. John von Neumann began working on the ENIAC project. On June 30, 1945, von Neumann published the First Draft of a Report on the EDVAC, which equated the structures of the computer with the structures of the human brain. The design became known as the von Neumann architecture. The architecture was simultaneously deployed in the constructions of the EDVAC and EDSAC computers in 1949.
+ 
+The IBM System/360 (1964) was a family of computers, each having the same instruction set architecture. The Model 20 was the smallest and least expensive. Customers could upgrade and retain the same application software. The Model 195 was the most premium.  Each System/360 model featured multiprogramming—having multiple processes in memory at once. When one process was waiting for input/output, another could compute.
+
+IBM planned for each model to be programmed using PL/1. A committee was formed that included COBOL, Fortran and ALGOL programmers. The purpose was to develop a language that was comprehensive, easy to use, extendible, and would replace Cobol and Fortran. The result was a large and complex language that took a long time to compile.
+
+Computers manufactured until the 1970s had front-panel switches for manual programming. The computer program was written on paper for reference. An instruction was represented by a configuration of on/off settings. After setting the configuration, an execute button was pressed. This process was then repeated. Computer programs also were automatically inputted via paper tape, punched cards or magnetic-tape. After the medium was loaded, the starting address was set via switches, and the execute button was pressed.
+
+Very Large Scale Integration
+
+A major milestone in software development was the invention of the Very Large Scale Integration (VLSI) circuit (1964). Following World War II, tube-based technology was replaced with point-contact transistors (1947) and bipolar junction transistors (late 1950s) mounted on a circuit board. During the 1960s, the aerospace industry replaced the circuit board with an integrated circuit chip.
+
+Robert Noyce, co-founder of Fairchild Semiconductor (1957) and Intel (1968), achieved a technological improvement to refine the production of field-effect transistors (1963). The goal is to alter the electrical resistivity and conductivity of a semiconductor junction. First, naturally occurring silicate minerals are converted into polysilicon rods using the Siemens process. The Czochralski process then converts the rods into a monocrystalline silicon, boule crystal. The crystal is then thinly sliced to form a wafer substrate. The planar process of photolithography then integrates unipolar transistors, capacitors, diodes, and resistors onto the wafer to build a matrix of metal–oxide–semiconductor (MOS) transistors. The MOS transistor is the primary component in integrated circuit chips.
+
+Originally, integrated circuit chips had their function set during manufacturing. During the 1960s, controlling the electrical flow migrated to programming a matrix of read-only memory (ROM). The matrix resembled a two-dimensional array of fuses. The process to embed instructions onto the matrix was to burn out the unneeded connections. There were so many connections, firmware programmers wrote a computer program on another chip to oversee the burning. The technology became known as Programmable ROM. In 1971, Intel installed the computer program onto the chip and named it the Intel 4004 microprocessor.
+
+The terms microprocessor and central processing unit (CPU) are now used interchangeably. However, CPUs predate microprocessors. For example, the IBM System/360 (1964) had a CPU made from circuit boards containing discrete components on ceramic substrates.
+
+Sac State 8008
+
+The Intel 4004 (1971) was a 4-bit microprocessor designed to run the Busicom calculator. Five months after its release, Intel released the Intel 8008, an 8-bit microprocessor. Bill Pentz led a team at Sacramento State to build the first microcomputer using the Intel 8008: the Sac State 8008 (1972). Its purpose was to store patient medical records. The computer supported a disk operating system to run a Memorex, 3-megabyte, hard disk drive. It had a color display and keyboard that was packaged in a single console. The disk operating system was programmed using IBM's Basic Assembly Language (BAL). The medical records application was programmed using a BASIC interpreter. However, the computer was an evolutionary dead-end because it was extremely expensive. Also, it was built at a public university lab for a specific purpose. Nonetheless, the project contributed to the development of the Intel 8080 (1974) instruction set.
+
+x86 series
+
+In 1978, the modern software development environment began when Intel upgraded the Intel 8080 to the Intel 8086. Intel simplified the Intel 8086 to manufacture the cheaper Intel 8088. IBM embraced the Intel 8088 when they entered the personal computer market (1981). As consumer demand for personal computers increased, so did Intel's microprocessor development. The succession of development is known as the x86 series. The x86 assembly language is a family of backward-compatible machine instructions. Machine instructions created in earlier microprocessors were retained throughout microprocessor upgrades. This enabled consumers to purchase new computers without having to purchase new application software.  The major categories of instructions are:
+ Memory instructions to set and access numbers and strings in random-access memory.
+ Integer arithmetic logic unit (ALU) instructions to perform the primary arithmetic operations on integers.
+ Floating point ALU instructions to perform the primary arithmetic operations on real numbers.
+ Call stack instructions to push and pop words needed to allocate memory and interface with functions. 
+ Single instruction, multiple data (SIMD) instructions to increase speed when multiple processors are available to perform the same algorithm on an array of data.
+
+Changing programming environment
+
+VLSI circuits enabled the programming environment to advance from a computer terminal (until the 1990s) to a graphical user interface (GUI) computer. Computer terminals limited programmers to a single shell running in a command-line environment. During the 1970s, full-screen source code editing became possible through a text-based user interface. Regardless of the technology available, the goal is to program in a programming language.
+
+Programming paradigms and languages
+
+Programming language features exist to provide building blocks to be combined to express programming ideals. Ideally, a programming language should:
+ express ideas directly in the code.
+ express independent ideas independently.
+ express relationships among ideas directly in the code.
+ combine ideas freely.
+ combine ideas only where combinations make sense.
+ express simple ideas simply.
+
+The programming style of a programming language to provide these building blocks may be categorized into programming paradigms. For example, different paradigms may differentiate:
+ procedural languages, functional languages, and logical languages.
+ different levels of data abstraction.
+ different levels of class hierarchy.
+ different levels of input datatypes, as in container types and generic programming.
+Each of these programming styles has contributed to the synthesis of different programming languages.
+
+A programming language is a set of keywords, symbols, identifiers, and rules by which programmers can communicate instructions to the computer. They follow a set of rules called a syntax.
+
+ Keywords are reserved words to form declarations and statements.
+ Symbols are characters to form operations, assignments, control flow, and delimiters.
+ Identifiers are words created by programmers to form constants, variable names, structure names, and function names.
+ Syntax Rules are defined in the Backus–Naur form.
+
+Programming languages get their basis from formal languages. The purpose of defining a solution in terms of its formal language is to generate an algorithm to solve the underlining problem. An algorithm is a sequence of simple instructions that solve a problem.
+
+Generations of programming language
+
+The evolution of programming language began when the EDSAC (1949) used the first stored computer program in its von Neumann architecture. Programming the EDSAC was in the first generation of programming language.
+
+ The first generation of programming language is machine language. Machine language requires the programmer to enter instructions using instruction numbers called machine code. For example, the ADD operation on the PDP-11 has instruction number 24576.
+
+ The second generation of programming language is assembly language. Assembly language allows the programmer to use mnemonic instructions instead of remembering instruction numbers. An assembler translates each assembly language mnemonic into its machine language number. For example, on the PDP-11, the operation 24576 can be referenced as ADD in the source code. The four basic arithmetic operations have assembly instructions like ADD, SUB, MUL, and DIV. Computers also have instructions like DW (Define Word) to reserve memory cells. Then the MOV instruction can copy integers between registers and memory.
+
+ The basic structure of an assembly language statement is a label, operation, operand, and comment.
+ Labels allow the programmer to work with variable names. The assembler will later translate labels into physical memory addresses.
+ Operations allow the programmer to work with mnemonics. The assembler will later translate mnemonics into instruction numbers.
+ Operands tell the assembler which data the operation will process.
+ Comments allow the programmer to articulate a narrative because the instructions alone are vague.
+ The key characteristic of an assembly language program is it forms a one-to-one mapping to its corresponding machine language target.
+
+ The third generation of programming language uses compilers and interpreters to execute computer programs. The distinguishing feature of a third generation language is its independence from particular hardware. Early languages include Fortran (1958), COBOL (1959), ALGOL (1960), and BASIC (1964). In 1973, the C programming language emerged as a high-level language that produced efficient machine language instructions. Whereas third-generation languages historically generated many machine instructions for each statement, C has statements that may generate a single machine instruction. Moreover, an optimizing compiler might overrule the programmer and produce fewer machine instructions than statements. Today, an entire paradigm of languages fill the imperative, third generation spectrum.
+
+ The fourth generation of programming language emphasizes what output results are desired, rather than how programming statements should be constructed. Declarative languages attempt to limit side effects and allow programmers to write code with relatively few errors. One popular fourth generation language is called Structured Query Language (SQL). Database developers no longer need to process each database record one at a time. Also, a simple statement can generate output records without having to understand how they are retrieved.
+
+Imperative languages
+
+Imperative languages specify a sequential algorithm using declarations, expressions, and statements:
+ A declaration introduces a variable name to the computer program and assigns it to a datatype – for example: var x: integer;
+ An expression yields a value – for example: 2 + 2 yields 4
+ A statement might assign an expression to a variable or use the value of a variable to alter the program's control flow – for example: x := 2 + 2; if x = 4 then do_something();
+
+Fortran
+FORTRAN (1958) was unveiled as "The IBM Mathematical FORmula TRANslating system." It was designed for scientific calculations, without string handling facilities. Along with declarations, expressions, and statements, it supported:
+ arrays.
+ subroutines. 
+ "do" loops.
+
+It succeeded because:
+ programming and debugging costs were below computer running costs.
+ it was supported by IBM.
+ applications at the time were scientific.
+
+However, non-IBM vendors also wrote Fortran compilers, but with a syntax that would likely fail IBM's compiler. The American National Standards Institute (ANSI) developed the first Fortran standard in 1966. In 1978, Fortran 77 became the standard until 1991. Fortran 90 supports:
+ records.
+ pointers to arrays.
+
+COBOL
+COBOL (1959) stands for "COmmon Business Oriented Language." Fortran manipulated symbols. It was soon realized that symbols did not need to be numbers, so strings were introduced. The US Department of Defense influenced COBOL's development, with Grace Hopper being a major contributor. The statements were English-like and verbose. The goal was to design a language so managers could read the programs. However, the lack of structured statements hindered this goal.
+
+COBOL's development was tightly controlled, so dialects did not emerge to require ANSI standards. As a consequence, it was not changed for 15 years until 1974. The 1990s version did make consequential changes, like object-oriented programming.
+
+Algol
+ALGOL (1960) stands for "ALGOrithmic Language." It had a profound influence on programming language design. Emerging from a committee of European and American programming language experts, it used standard mathematical notation and had a readable, structured design. Algol was first to define its syntax using the Backus–Naur form. This led to syntax-directed compilers. It added features like:
+ block structure, where variables were local to their block.
+ arrays with variable bounds.
+ "for" loops.
+ functions.
+ recursion.
+
+Algol's direct descendants include Pascal, Modula-2, Ada, Delphi and Oberon on one branch. On another branch the descendants include C, C++ and Java.
+
+Basic
+BASIC (1964) stands for "Beginner's All-Purpose Symbolic Instruction Code." It was developed at Dartmouth College for all of their students to learn. If a student did not go on to a more powerful language, the student would still remember Basic. A Basic interpreter was installed in the microcomputers manufactured in the late 1970s. As the microcomputer industry grew, so did the language.
+
+Basic pioneered the interactive session. It offered operating system commands within its environment:
+ The 'new' command created an empty slate.
+ Statements evaluated immediately.
+ Statements could be programmed by preceding them with a line number.
+ The 'list' command displayed the program.
+ The 'run' command executed the program.
+
+However, the Basic syntax was too simple for large programs. Recent dialects added structure and object-oriented extensions. Microsoft's Visual Basic is still widely used and produces a graphical user interface.
+
+C
+C programming language (1973) got its name because the language BCPL was replaced with B, and AT&T Bell Labs called the next version "C." Its purpose was to write the UNIX operating system. C is a relatively small language, making it easy to write compilers. Its growth mirrored the hardware growth in the 1980s. Its growth also was because it has the facilities of assembly language, but uses a high-level syntax. It added advanced features like:
+ inline assembler.
+ arithmetic on pointers.
+ pointers to functions.
+ bit operations.
+ freely combining complex operators.
+
+C allows the programmer to control which region of memory data is to be stored. Global variables and static variables require the fewest clock cycles to store. The stack is automatically used for the standard variable declarations. Heap memory is returned to a pointer variable from the malloc() function.
+
+ The global and static data region is located just above the program region. (The program region is technically called the text region. It's where machine instructions are stored.)
+ The global and static data region is technically two regions. One region is called the initialized data segment, where variables declared with default values are stored. The other region is called the block started by segment, where variables declared without default values are stored.
+ Variables stored in the global and static data region have their addresses set at compile-time. They retain their values throughout the life of the process.
+
+ The global and static region stores the global variables that are declared on top of (outside) the main() function. Global variables are visible to main() and every other function in the source code.
+
+ On the other hand, variable declarations inside of main(), other functions, or within { } block delimiters are local variables. Local variables also include formal parameter variables. Parameter variables are enclosed within the parenthesis of function definitions. They provide an interface to the function.
+
+ Local variables declared using the static prefix are also stored in the global and static data region. Unlike global variables, static variables are only visible within the function or block. Static variables always retain their value. An example usage would be the function int increment_counter(){static int counter = 0; counter++; return counter;}
+
+ The stack region is a contiguous block of memory located near the top memory address. Variables placed in the stack are populated from top to bottom. A stack pointer is a special-purpose register that keeps track of the last memory address populated. Variables are placed into the stack via the assembly language PUSH instruction. Therefore, the addresses of these variables are set during runtime. The method for stack variables to lose their scope is via the POP instruction.
+
+ Local variables declared without the static prefix, including formal parameter variables, are called automatic variables and are stored in the stack. They are visible inside the function or block and lose their scope upon exiting the function or block.
+
+ The heap region is located below the stack. It is populated from the bottom to the top. The operating system manages the heap using a heap pointer and a list of allocated memory blocks. Like the stack, the addresses of heap variables are set during runtime. An out of memory error occurs when the heap pointer and the stack pointer meet.
+
+ C provides the malloc() library function to allocate heap memory. Populating the heap with data is an additional copy function. Variables stored in the heap are economically passed to functions using pointers. Without pointers, the entire block of data would have to be passed to the function via the stack.
+
+C++
+In the 1970s, software engineers needed language support to break large projects down into modules. One obvious feature was to decompose large projects physically into separate files. A less obvious feature was to decompose large projects logically into abstract datatypes. At the time, languages supported concrete (scalar) datatypes like integer numbers, floating-point numbers, and strings of characters. Abstract datatypes are structures of concrete datatypes, with a new name assigned. For example, a list of integers could be called integer_list.
+
+In object-oriented jargon, abstract datatypes are called classes. However, a class is only a definition; no memory is allocated. When memory is allocated to a class and bound to an identifier, it's called an object.
+
+Object-oriented imperative languages developed by combining the need for classes and the need for safe functional programming. A function, in an object-oriented language, is assigned to a class. An assigned function is then referred to as a method, member function, or operation. Object-oriented programming is executing operations on objects.
+
+Object-oriented languages support a syntax to model subset/superset relationships. In set theory, an element of a subset inherits all the attributes contained in the superset. For example, a student is a person. Therefore, the set of students is a subset of the set of persons. As a result, students inherit all the attributes common to all persons. Additionally, students have unique attributes that other people do not have. Object-oriented languages model subset/superset relationships using inheritance. Object-oriented programming became the dominant language paradigm by the late 1990s.
+
+C++ (1985) was originally called "C with Classes." It was designed to expand C's capabilities by adding the object-oriented facilities of the language Simula.
+
+An object-oriented module is composed of two files. The definitions file is called the header file. Here is a C++ header file for the GRADE class in a simple school application:
+
+// grade.h
+// -------
+
+// Used to allow multiple source files to include
+// this header file without duplication errors.
+// ----------------------------------------------
+#ifndef GRADE_H
+#define GRADE_H
+
+class GRADE {
+public:
+    // This is the constructor operation.
+    // ----------------------------------
+    GRADE ( const char letter );
+
+    // This is a class variable.
+    // -------------------------
+    char letter;
+
+    // This is a member operation.
+    // ---------------------------
+    int grade_numeric( const char letter );
+
+    // This is a class variable.
+    // -------------------------
+    int numeric;
+};
+#endif
+
+A constructor operation is a function with the same name as the class name. It is executed when the calling operation executes the new statement.
+
+A module's other file is the source file. Here is a C++ source file for the GRADE class in a simple school application:
+
+// grade.cpp
+// ---------
+#include "grade.h"
+
+GRADE::GRADE( const char letter )
+{
+    // Reference the object using the keyword 'this'.
+    // ----------------------------------------------
+    this->letter = letter;
+
+    // This is Temporal Cohesion
+    // -------------------------
+    this->numeric = grade_numeric( letter );
+}
+
+int GRADE::grade_numeric( const char letter )
+{
+    if ( ( letter == 'A' || letter == 'a' ) )
+        return 4;
+    else
+    if ( ( letter == 'B' || letter == 'b' ) )
+        return 3;
+    else
+    if ( ( letter == 'C' || letter == 'c' ) )
+        return 2;
+    else
+    if ( ( letter == 'D' || letter == 'd' ) )
+        return 1;
+    else
+    if ( ( letter == 'F' || letter == 'f' ) )
+        return 0;
+    else
+        return -1;
+}
+
+Here is a C++ header file for the PERSON class in a simple school application:
+
+// person.h
+// --------
+#ifndef PERSON_H
+#define PERSON_H
+
+class PERSON {
+public:
+    PERSON ( const char *name );
+    const char *name;
+};
+#endif
+
+Here is a C++ source file for the PERSON class in a simple school application:
+
+// person.cpp
+// ----------
+#include "person.h"
+
+PERSON::PERSON ( const char *name )
+{
+    this->name = name;
+}
+
+Here is a C++ header file for the STUDENT class in a simple school application:
+
+// student.h
+// ---------
+#ifndef STUDENT_H
+#define STUDENT_H
+
+#include "person.h"
+#include "grade.h"
+
+// A STUDENT is a subset of PERSON.
+// --------------------------------
+class STUDENT : public PERSON{
+public:
+    STUDENT ( const char *name );
+    GRADE *grade;
+};
+#endif
+
+Here is a C++ source file for the STUDENT class in a simple school application:
+
+// student.cpp
+// -----------
+#include "student.h"
+#include "person.h"
+
+STUDENT::STUDENT ( const char *name ):
+    // Execute the constructor of the PERSON superclass.
+    // -------------------------------------------------
+    PERSON( name )
+{
+    // Nothing else to do.
+    // -------------------
+}
+
+Here is a driver program for demonstration:
+
+// student_dvr.cpp
+// ---------------
+#include <iostream>
+#include "student.h"
+
+int main( void )
+{
+    STUDENT *student = new STUDENT( "The Student" );
+    student->grade = new GRADE( 'a' );
+
+    std::cout 
+        // Notice student inherits PERSON's name
+        << student->name
+        << ": Numeric grade = "
+        << student->grade->numeric
+        << "\n";
+	return 0;
+}
+
+Here is a makefile to compile everything:
+
+# makefile
+# --------
+all: student_dvr
+
+clean:
+    rm student_dvr *.o
+
+student_dvr: student_dvr.cpp grade.o student.o person.o
+    c++ student_dvr.cpp grade.o student.o person.o -o student_dvr
+
+grade.o: grade.cpp grade.h
+    c++ -c grade.cpp
+
+student.o: student.cpp student.h
+    c++ -c student.cpp
+
+person.o: person.cpp person.h
+    c++ -c person.cpp
+
+Declarative languages
+
+Imperative languages have one major criticism: assigning an expression to a non-local variable may produce an unintended side effect. Declarative languages generally omit the assignment statement and the control flow. They describe what computation should be performed and not how to compute it. Two broad categories of declarative languages are functional languages and logical languages.
+
+The principle behind a functional language is to use lambda calculus as a guide for a well defined semantic. In mathematics, a function is a rule that maps elements from an expression to a range of values. Consider the function:
+
+times_10(x) = 10 * x
+
+The expression 10 * x is mapped by the function times_10() to a range of values. One value happens to be 20. This occurs when x is 2. So, the application of the function is mathematically written as:
+
+times_10(2) = 20
+
+A functional language compiler will not store this value in a variable. Instead, it will push the value onto the computer's stack before setting the program counter back to the calling function. The calling function will then pop the value from the stack.
+
+Imperative languages do support functions. Therefore, functional programming can be achieved in an imperative language, if the programmer uses discipline. However, a functional language will force this discipline onto the programmer through its syntax. Functional languages have a syntax tailored to emphasize the what.
+
+A functional program is developed with a set of primitive functions followed by a single driver function. Consider the snippet:
+
+function max(a,b){/* code omitted */}
+
+function min(a,b){/* code omitted */}
+
+function difference_between_largest_and_smallest(a,b,c) {
+return max(a,max(b,c)) - min(a, min(b,c));
+}
+
+The primitives are max() and min(). The driver function is difference_between_largest_and_smallest(). Executing:
+
+put(difference_between_largest_and_smallest(10,4,7)); will output 6.
+
+Functional languages are used in computer science research to explore new language features. Moreover, their lack of side-effects have made them popular in parallel programming and concurrent programming. However, application developers prefer the object-oriented features of imperative languages.
+
+Lisp
+Lisp (1958) stands for "LISt Processor." It is tailored to process lists. A full structure of the data is formed by building lists of lists. In memory, a tree data structure is built. Internally, the tree structure lends nicely for recursive functions. The syntax to build a tree is to enclose the space-separated elements within parenthesis. The following is a list of three elements. The first two elements are themselves lists of two elements:
+
+((A B) (HELLO WORLD) 94)
+
+Lisp has functions to extract and reconstruct elements. The function head() returns a list containing the first element in the list. The function tail() returns a list containing everything but the first element. The function cons() returns a list that is the concatenation of other lists. Therefore, the following expression will return the list x:
+
+cons(head(x), tail(x))
+
+One drawback of Lisp is when many functions are nested, the parentheses may look confusing. Modern Lisp environments help ensure parenthesis match. As an aside, Lisp does support the imperative language operations of the assignment statement and goto loops. Also, Lisp is not concerned with the datatype of the elements at compile time. Instead, it assigns (and may reassign) the datatypes at runtime. Assigning the datatype at runtime is called dynamic binding. Whereas dynamic binding increases the language's flexibility, programming errors may linger until late in the software development process.
+
+Writing large, reliable, and readable Lisp programs requires forethought. If properly planned, the program may be much shorter than an equivalent imperative language program. Lisp is widely used in artificial intelligence. However, its usage has been accepted only because it has imperative language operations, making unintended side-effects possible.
+
+ML
+ML (1973) stands for "Meta Language." ML checks to make sure only data of the same type are compared with one another. For example, this function has one input parameter (an integer) and returns an integer:
+
+ML is not parenthesis-eccentric like Lisp. The following is an application of times_10():
+
+ times_10 2
+
+It returns "20 : int". (Both the results and the datatype are returned.)
+
+Like Lisp, ML is tailored to process lists. Unlike Lisp, each element is the same datatype. Moreover, ML assigns the datatype of an element at compile-time. Assigning the datatype at compile-time is called static binding. Static binding increases reliability because the compiler checks the context of variables before they are used.
+
+Prolog
+Prolog (1972) stands for "PROgramming in LOGic." It is a logic programming language, based on formal logic. The language was developed by Alain Colmerauer and Philippe Roussel in Marseille, France. It is an implementation of Selective Linear Definite clause resolution, pioneered by Robert Kowalski and others at the University of Edinburgh.
+
+The building blocks of a Prolog program are facts and rules. Here is a simple example:
+cat(tom).                        % tom is a cat
+mouse(jerry).                    % jerry is a mouse
+
+animal(X) :- cat(X).             % each cat is an animal
+animal(X) :- mouse(X).           % each mouse is an animal
+
+big(X)   :- cat(X).              % each cat is big
+small(X) :- mouse(X).            % each mouse is small
+
+eat(X,Y) :- mouse(X), cheese(Y). % each mouse eats each cheese
+eat(X,Y) :- big(X),   small(Y).  % each big animal eats each small animal
+
+After all the facts and rules are entered, then a question can be asked:
+ Will Tom eat Jerry?
+?- eat(tom,jerry).
+true
+
+The following example shows how Prolog will convert a letter grade to its numeric value:
+numeric_grade('A', 4).
+numeric_grade('B', 3).
+numeric_grade('C', 2).
+numeric_grade('D', 1).
+numeric_grade('F', 0).
+numeric_grade(X, -1) :- not X = 'A', not X = 'B', not X = 'C', not X = 'D', not X = 'F'.
+grade('The Student', 'A').
+?- grade('The Student', X), numeric_grade(X, Y).
+X = 'A',
+Y = 4
+
+Here is a comprehensive example:
+
+1) All dragons billow fire, or equivalently, a thing billows fire if the thing is a dragon:
+billows_fire(X) :-
+    is_a_dragon(X).
+2) A creature billows fire if one of its parents billows fire:
+billows_fire(X) :-
+    is_a_creature(X),
+    is_a_parent_of(Y,X),
+    billows_fire(Y).
+3) A thing X is a parent of a thing Y if X is the mother of Y or X is the father of Y: 
+ 
+is_a_parent_of(X, Y):- is_the_mother_of(X, Y).
+is_a_parent_of(X, Y):- is_the_father_of(X, Y).
+
+4) A thing is a creature if the thing is a dragon:
+is_a_creature(X) :-
+    is_a_dragon(X).
+
+5) Norberta is a dragon, and Puff is a creature. Norberta is the mother of Puff.
+
+is_a_dragon(norberta). 
+is_a_creature(puff).
+is_the_mother_of(norberta, puff).
+
+Rule (2) is a  recursive (inductive) definition. It can be understood declaratively, without the need to understand how it is executed.
+
+Rule (3) shows how functions are represented by using relations. Here, the mother and father functions ensure that every individual has only one mother and only one father.
+
+Prolog is an untyped language. Nonetheless, inheritance can be represented by using predicates. Rule (4) asserts that a creature is a superclass of a dragon.
+
+Questions are answered using backward reasoning. Given the question:
+
+ ?- billows_fire(X).
+ 
+Prolog generates two answers :
+X = norberta
+X = puff
+ 
+ 
+Practical applications for Prolog are knowledge representation and problem solving in artificial intelligence.
+
+Object-oriented programming
+Object-oriented programming is a programming method to execute operations (functions) on objects. The basic idea is to group the characteristics of a phenomenon into an object container and give the container a name. The operations on the phenomenon are also grouped into the container. Object-oriented programming developed by combining the need for containers and the need for safe functional programming. This programming method need not be confined to an object-oriented language. In an object-oriented language, an object container is called a class. In a non-object-oriented language, a data structure (which is also known as a record) may become an object container. To turn a data structure into an object container, operations need to be written specifically for the structure. The resulting structure is called an abstract datatype. However, inheritance will be missing. Nonetheless, this shortcoming can be overcome.
+
+Here is a C programming language header file for the GRADE abstract datatype in a simple school application:
+
+/* grade.h */
+/* ------- */
+
+/* Used to allow multiple source files to include */
+/* this header file without duplication errors.   */
+/* ---------------------------------------------- */
+#ifndef GRADE_H
+#define GRADE_H
+
+typedef struct
+{
+    char letter;
+} GRADE;
+
+/* Constructor */
+/* ----------- */
+GRADE *grade_new( char letter );
+
+int grade_numeric( char letter );
+#endif
+
+The grade_new() function performs the same algorithm as the C++ constructor operation.
+
+Here is a C programming language source file for the GRADE abstract datatype in a simple school application:
+
+/* grade.c */
+/* ------- */
+#include "grade.h"
+
+GRADE *grade_new( char letter )
+{
+    GRADE *grade;
+
+    /* Allocate heap memory */
+    /* -------------------- */
+    if ( ! ( grade = calloc( 1, sizeof ( GRADE ) ) ) )
+    {
+        fprintf(stderr,
+                "ERROR in %s/%s/%d: calloc() returned empty.\n",
+                ,
+                ,
+                 );
+        exit( 1 );
+    }
+
+    grade->letter = letter;
+    return grade;
+}
+
+int grade_numeric( char letter )
+{
+    if ( ( letter == 'A' || letter == 'a' ) )
+        return 4;
+    else
+    if ( ( letter == 'B' || letter == 'b' ) )
+        return 3;
+    else
+    if ( ( letter == 'C' || letter == 'c' ) )
+        return 2;
+    else
+    if ( ( letter == 'D' || letter == 'd' ) )
+        return 1;
+    else
+    if ( ( letter == 'F' || letter == 'f' ) )
+        return 0;
+    else
+        return -1;
+}
+
+In the constructor, the function calloc() is used instead of malloc() because each memory cell will be set to zero.
+
+Here is a C programming language header file for the PERSON abstract datatype in a simple school application:
+
+/* person.h */
+/* -------- */
+#ifndef PERSON_H
+#define PERSON_H
+
+typedef struct
+{
+    char *name;
+} PERSON;
+
+/* Constructor */
+/* ----------- */
+PERSON *person_new( char *name );
+#endif
+
+Here is a C programming language source file for the PERSON abstract datatype in a simple school application:
+
+/* person.c */
+/* -------- */
+#include "person.h"
+
+PERSON *person_new( char *name )
+{
+    PERSON *person;
+
+    if ( ! ( person = calloc( 1, sizeof ( PERSON ) ) ) )
+    {
+        fprintf(stderr,
+                "ERROR in %s/%s/%d: calloc() returned empty.\n",
+                ,
+                ,
+                 );
+        exit( 1 );
+    }
+
+    person->name = name;
+    return person;
+}
+
+Here is a C programming language header file for the STUDENT abstract datatype in a simple school application:
+
+/* student.h */
+/* --------- */
+#ifndef STUDENT_H
+#define STUDENT_H
+
+#include "person.h"
+#include "grade.h"
+
+typedef struct
+{
+    /* A STUDENT is a subset of PERSON. */
+    /* -------------------------------- */
+    PERSON *person;
+
+    GRADE *grade;
+} STUDENT;
+
+/* Constructor */
+/* ----------- */
+STUDENT *student_new( char *name );
+#endif
+
+Here is a C programming language source file for the STUDENT abstract datatype in a simple school application:
+
+/* student.c */
+/* --------- */
+#include "student.h"
+#include "person.h"
+
+STUDENT *student_new( char *name )
+{
+    STUDENT *student;
+
+    if ( ! ( student = calloc( 1, sizeof ( STUDENT ) ) ) )
+    {
+        fprintf(stderr,
+                "ERROR in %s/%s/%d: calloc() returned empty.\n",
+                ,
+                ,
+                 );
+        exit( 1 );
+    }
+
+    /* Execute the constructor of the PERSON superclass. */
+    /* ------------------------------------------------- */
+    student->person = person_new( name );
+    return student;
+}
+
+Here is a driver program for demonstration:
+
+/* student_dvr.c */
+/* ------------- */
+#include <stdio.h>
+#include "student.h"
+
+int main( void )
+{
+    STUDENT *student = student_new( "The Student" );
+    student->grade = grade_new( 'a' );
+
+    printf( "%s: Numeric grade = %d\n",
+            /* Whereas a subset exists, inheritance does not. */
+            student->person->name,
+            /* Functional programming is executing functions just-in-time (JIT) */
+            grade_numeric( student->grade->letter ) );
+
+	return 0;
+}
+
+Here is a makefile to compile everything:
+
+# makefile
+# --------
+all: student_dvr
+
+clean:
+    rm student_dvr *.o
+
+student_dvr: student_dvr.c grade.o student.o person.o
+    gcc student_dvr.c grade.o student.o person.o -o student_dvr
+
+grade.o: grade.c grade.h
+    gcc -c grade.c
+
+student.o: student.c student.h
+    gcc -c student.c
+
+person.o: person.c person.h
+    gcc -c person.c
+
+The formal strategy to build object-oriented objects is to:
+ Identify the objects. Most likely these will be nouns.
+ Identify each object's attributes. What helps to describe the object?
+ Identify each object's actions. Most likely these will be verbs.
+ Identify the relationships from object to object. Most likely these will be verbs.
+
+For example:
+ A person is a human identified by a name.
+ A grade is an achievement identified by a letter.
+ A student is a person who earns a grade.
+
+Syntax and semantics
+The syntax of a programming language is a list of production rules which govern its form. A programming language's form is the correct placement of its declarations, expressions, and statements. Complementing the syntax of a language are its semantics. The semantics describe the meanings attached to various syntactic constructs. A syntactic construct may need a semantic description because a form may have an invalid interpretation. Also, different languages might have the same syntax; however, their behaviors may be different.
+
+The syntax of a language is formally described by listing the production rules. Whereas the syntax of a natural language is extremely complicated, a subset of the English language can have this production rule listing:
+ a sentence is made up of a noun-phrase followed by a verb-phrase;
+ a noun-phrase is made up of an article followed by an adjective followed by a noun;
+ a verb-phrase is made up of a verb followed by a noun-phrase;
+ an article is 'the';
+ an adjective is 'big' or
+ an adjective is 'small';
+ a noun is 'cat' or
+ a noun is 'mouse';
+ a verb is 'eats';
+The words in bold-face are known as "non-terminals". The words in 'single quotes' are known as "terminals".
+
+From this production rule listing, complete sentences may be formed using a series of replacements. The process is to replace non-terminals with either a valid non-terminal or a valid terminal. The replacement process repeats until only terminals remain. One valid sentence is:
+ sentence
+ noun-phrase verb-phrase
+ article adjective noun verb-phrase
+ the adjective noun verb-phrase
+ the big noun verb-phrase
+ the big cat verb-phrase
+ the big cat verb noun-phrase
+ the big cat eats noun-phrase
+ the big cat eats article adjective noun
+ the big cat eats the adjective noun
+ the big cat eats the small noun
+ the big cat eats the small mouse
+
+However, another combination results in an invalid sentence:
+ the small mouse eats the big cat
+Therefore, a semantic is necessary to correctly describe the meaning of an eat activity.
+
+One production rule listing method is called the Backus–Naur form (BNF). BNF describes the syntax of a language and itself has a syntax. This recursive definition is an example of a meta-language. The syntax of BNF includes:
+ ::= which translates to is made up of a[n] when a non-terminal is to its right. It translates to is when a terminal is to its right.
+ | which translates to or.
+ < and > which surround non-terminals.
+
+Using BNF, a subset of the English language can have this production rule listing:
+<sentence> ::= <noun-phrase><verb-phrase>
+<noun-phrase> ::= <article><adjective><noun>
+<verb-phrase> ::= <verb><noun-phrase>
+<article> ::= the
+<adjective> ::= big | small
+<noun> ::= cat | mouse
+<verb> ::= eats
+
+Using BNF, a signed-integer has the production rule listing:
+<signed-integer> ::= <sign><integer>
+<sign> ::= + | -
+<integer> ::= <digit> | <digit><integer>
+<digit> ::= 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9
+
+Notice the recursive production rule:
+<integer> ::= <digit> | <digit><integer>
+This allows for an infinite number of possibilities. Therefore, a semantic is necessary to describe a limitation of the number of digits.
+
+Notice the leading zero possibility in the production rules:
+<integer> ::= <digit> | <digit><integer>
+<digit> ::= 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9
+Therefore, a semantic is necessary to describe that leading zeros need to be ignored.
+
+Two formal methods are available to describe semantics. They are denotational semantics and axiomatic semantics.
+
+Software engineering and computer programming
+
+Software engineering is a variety of techniques to produce quality software. Computer programming is the process of writing or editing source code. In a formal environment, a systems analyst will gather information from managers about all the organization's processes to automate. This professional then prepares a detailed plan for the new or modified system. The plan is analogous to an architect's blueprint.
+
+Performance objectives
+The systems analyst has the objective to deliver the right information to the right person at the right time. The critical factors to achieve this objective are:
+ The quality of the output. Is the output useful for decision-making?
+ The accuracy of the output. Does it reflect the true situation?
+ The format of the output. Is the output easily understood?
+ The speed of the output. Time-sensitive information is important when communicating with the customer in real time.
+
+Cost objectives
+Achieving performance objectives should be balanced with all of the costs, including:
+ Development costs.
+ Uniqueness costs. A reusable system may be expensive. However, it might be preferred over a limited-use system.
+ Hardware costs.
+ Operating costs.
+
+Applying a systems development process will mitigate the axiom: the later in the process an error is detected, the more expensive it is to correct.
+
+Waterfall model
+The waterfall model is an implementation of a systems development process. As the waterfall label implies, the basic phases overlap each other:
+ The investigation phase is to understand the underlying problem.
+ The analysis phase is to understand the possible solutions.
+ The design phase is to plan the best solution.
+ The implementation phase is to program the best solution.
+ The maintenance phase lasts throughout the life of the system. Changes to the system after it's deployed may be necessary. Faults may exist, including specification faults, design faults, or coding faults. Improvements may be necessary. Adaption may be necessary to react to a changing environment.
+
+Computer programmer
+A computer programmer is a specialist responsible for writing or modifying the source code to implement the detailed plan. A programming team is likely to be needed because most systems are too large to be completed by a single programmer. However, adding programmers to a project may not shorten the completion time. Instead, it may lower the quality of the system. To be effective, program modules need to be defined and distributed to team members. Also, team members must interact with one another in a meaningful and effective way.
+
+Computer programmers may be programming in the small: programming within a single module. Chances are a module will execute modules located in other source code files. Therefore, computer programmers may be programming in the large: programming modules so they will effectively couple with each other. Programming-in-the-large includes contributing to the application programming interface (API).
+
+Program modules
+Modular programming is a technique to refine imperative language programs. Refined programs may reduce the software size, separate responsibilities, and thereby mitigate software aging. A program module is a sequence of statements that are bounded within a block and together identified by a name. Modules have a function, context, and logic:
+
+ The function of a module is what it does.
+ The context of a module are the elements being performed upon.
+ The logic of a module is how it performs the function.
+
+The module's name should be derived first by its function, then by its context. Its logic should not be part of the name. For example, function compute_square_root( x ) or function compute_square_root_integer( i : integer ) are appropriate module names. However, function compute_square_root_by_division( x ) is not.
+
+The degree of interaction within a module is its level of cohesion. Cohesion is a judgment of the relationship between a module's name and its function. The degree of interaction between modules is the level of coupling. Coupling is a judgement of the relationship between a module's context and the elements being performed upon.
+
+Cohesion
+The levels of cohesion from worst to best are:
+
+ Coincidental Cohesion: A module has coincidental cohesion if it performs multiple functions, and the functions are completely unrelated. For example, function read_sales_record_print_next_line_convert_to_float(). Coincidental cohesion occurs in practice if management enforces silly rules. For example, "Every module will have between 35 and 50 executable statements."
+ Logical Cohesion: A module has logical cohesion if it has available a series of functions, but only one of them is executed. For example, function perform_arithmetic( perform_addition, a, b ).
+ Temporal Cohesion: A module has temporal cohesion if it performs functions related to time. One example, function initialize_variables_and_open_files(). Another example, stage_one(), stage_two(), ...
+ Procedural Cohesion: A module has procedural cohesion if it performs multiple loosely related functions. For example, function read_part_number_update_employee_record().
+ Communicational Cohesion: A module has communicational cohesion if it performs multiple closely related functions. For example, function read_part_number_update_sales_record().
+ Informational Cohesion: A module has informational cohesion if it performs multiple functions, but each function has its own entry and exit points. Moreover, the functions share the same data structure. Object-oriented classes work at this level.
+ Functional Cohesion: a module has functional cohesion if it achieves a single goal working only on local variables. Moreover, it may be reusable in other contexts.
+
+Coupling
+The levels of coupling from worst to best are:
+
+ Content Coupling: A module has content coupling if it modifies a local variable of another function. COBOL used to do this with the alter verb.
+ Common Coupling: A module has common coupling if it modifies a global variable.
+ Control Coupling: A module has control coupling if another module can modify its control flow. For example, perform_arithmetic( perform_addition, a, b ). Instead, control should be on the makeup of the returned object.
+ Stamp Coupling: A module has stamp coupling if an element of a data structure passed as a parameter is modified. Object-oriented classes work at this level.
+  Data Coupling: A module has data coupling if all of its input parameters are needed and none of them are modified. Moreover, the result of the function is returned as a single object.
+
+Data flow analysis
+
+Data flow analysis is a design method used to achieve modules of functional cohesion and data coupling. The input to the method is a data-flow diagram. A data-flow diagram is a set of ovals representing modules. Each module's name is displayed inside its oval. Modules may be at the executable level or the function level.
+
+The diagram also has arrows connecting modules to each other. Arrows pointing into modules represent a set of inputs. Each module should have only one arrow pointing out from it to represent its single output object. (Optionally, an additional exception arrow points out.) A daisy chain of ovals will convey an entire algorithm. The input modules should start the diagram. The input modules should connect to the transform modules. The transform modules should connect to the output modules.
+
+Functional categories
+
+Computer programs may be categorized along functional lines. The main functional categories are application software and system software. System software includes the operating system, which couples computer hardware with application software. The purpose of the operating system is to provide an environment where application software executes in a convenient and efficient manner. Both application software and system software execute utility programs. At the hardware level, a microcode program controls the circuits throughout the central processing unit.
+
+Application software
+
+Application software is the key to unlocking the potential of the computer system. Enterprise application software bundles accounting, personnel, customer, and vendor applications. Examples include enterprise resource planning, customer relationship management, and supply chain management software.
+
+Enterprise applications may be developed in-house as a one-of-a-kind proprietary software. Alternatively, they may be purchased as off-the-shelf software. Purchased software may be modified to provide custom software. If the application is customized, then either the company's resources are used or the resources are outsourced. Outsourced software development may be from the original software vendor or a third-party developer.
+
+The potential advantages of in-house software are features and reports may be developed exactly to specification. Management may also be involved in the development process and offer a level of control. Management may decide to counteract a competitor's new initiative or implement a customer or vendor requirement.  A merger or acquisition may necessitate enterprise software changes. The potential disadvantages of in-house software are time and resource costs may be extensive. Furthermore, risks concerning features and performance may be looming.
+
+The potential advantages of off-the-shelf software are upfront costs are identifiable, the basic needs should be fulfilled, and its performance and reliability have a track record. The potential disadvantages of off-the-shelf software are it may have unnecessary features that confuse end users, it may lack features the enterprise needs, and the data flow may not match the enterprise's work processes.
+
+One approach to economically obtaining a customized enterprise application is through an application service provider. Specialty companies provide hardware, custom software, and end-user support. They may speed the development of new applications because they possess skilled information system staff. The biggest advantage is it frees in-house resources from staffing and managing complex computer projects. Many application service providers target small, fast-growing companies with limited information system resources. On the other hand, larger companies with major systems will likely have their technical infrastructure in place. One risk is having to trust an external organization with sensitive information. Another risk is having to trust the provider's infrastructure reliability.
+
+Operating system
+
+An operating system is the low-level software that supports a computer's basic functions, such as scheduling processes and controlling peripherals.
+
+In the 1950s, the programmer, who was also the operator, would write a program and run it. After the program finished executing, the output may have been printed, or it may have been punched onto paper tape or cards for later processing. More often than not the program did not work. The programmer then looked at the console lights and fiddled with the console switches. If less fortunate, a memory printout was made for further study. In the 1960s, programmers reduced the amount of wasted time by automating the operator's job. A program called an operating system was kept in the computer at all times.
+
+The term operating system may refer to two levels of software. The operating system may refer to the kernel program that manages the processes, memory, and devices. More broadly, the operating system may refer to the entire package of the central software. The package includes a kernel program, command-line interpreter, graphical user interface, utility programs, and editor.
+
+Kernel Program
+
+The kernel's main purpose is to manage the limited resources of a computer:
+ The kernel program should perform process scheduling. The kernel creates a process control block when a program is selected for execution. However, an executing program gets exclusive access to the central processing unit only for a time slice. To provide each user with the appearance of continuous access, the kernel quickly preempts each process control block to execute another one. The goal for system developers is to minimize dispatch latency.
+
+ The kernel program should perform memory management.
+ When the kernel initially loads an executable into memory, it divides the address space logically into regions. The kernel maintains a master-region table and many per-process-region (pregion) tables—one for each running process. These tables constitute the virtual address space. The master-region table is used to determine where its contents are located in physical memory. The pregion tables allow each process to have its own program (text) pregion, data pregion, and stack pregion.
+The program pregion stores machine instructions. Since machine instructions do not change, the program pregion may be shared by many processes of the same executable.
+ To save time and memory, the kernel may load only blocks of execution instructions from the disk drive, not the entire execution file completely.
+The kernel is responsible for translating virtual addresses into physical addresses. The kernel may request data from the memory controller and, instead, receive a page fault. If so, the kernel accesses the memory management unit to populate the physical data region and translate the address. 
+ The kernel allocates memory from the heap upon request by a process. When the process is finished with the memory, the process may request for it to be freed. If the process exits without requesting all allocated memory to be freed, then the kernel performs garbage collection to free the memory.
+ The kernel also ensures that a process only accesses its own memory, and not that of the kernel or other processes.
+ The kernel program should perform file system management. The kernel has instructions to create, retrieve, update, and delete files.
+ The kernel program should perform device management. The kernel provides programs to standardize and simplify the interface to the mouse, keyboard, disk drives, printers, and other devices. Moreover, the kernel should arbitrate access to a device if two processes request it at the same time.
+ The kernel program should perform network management. The kernel transmits and receives packets on behalf of processes. One key service is to find an efficient route to the target system.
+ The kernel program should provide system level functions for programmers to use.
+ Programmers access files through a relatively simple interface that in turn executes a relatively complicated low-level I/O interface. The low-level interface includes file creation, file descriptors, file seeking, physical reading, and physical writing.
+ Programmers create processes through a relatively simple interface that in turn executes a relatively complicated low-level interface.
+ Programmers perform date/time arithmetic through a relatively simple interface that in turn executes a relatively complicated low-level time interface.
+ The kernel program should provide a communication channel between executing processes. For a large software system, it may be desirable to engineer the system into smaller processes. Processes may communicate with one another by sending and receiving signals.
+
+Originally, operating systems were programmed in assembly; however, modern operating systems are typically written in higher-level languages like C, Objective-C, and Swift.
+
+Utility program
+A utility program is designed to aid system administration and software execution. Operating systems execute hardware utility programs to check the status of disk drives, memory, speakers, and printers. A utility program may optimize the placement of a file on a crowded disk. System utility programs monitor hardware and network performance. When a metric is outside an acceptable range, a trigger alert is generated.
+
+Utility programs include compression programs so data files are stored on less disk space. Compressed programs also save time when data files are transmitted over the network. Utility programs can sort and merge data sets. Utility programs detect computer viruses.
+
+Microcode program
+
+A microcode program is the bottom-level interpreter that controls the data path of software-driven computers.
+(Advances in hardware have migrated these operations to hardware execution circuits.) Microcode instructions allow the programmer to more easily implement the digital logic level—the computer's real hardware. The digital logic level is the boundary between computer science and computer engineering.
+
+A logic gate is a tiny transistor that can return one of two signals: on or off.
+
+ Having one transistor forms the NOT gate.
+ Connecting two transistors in series forms the NAND gate.
+ Connecting two transistors in parallel forms the NOR gate.
+ Connecting a NOT gate to a NAND gate forms the AND gate.
+ Connecting a NOT gate to a NOR gate forms the OR gate.
+
+These five gates form the building blocks of binary algebra—the digital logic functions of the computer.
+
+Microcode instructions are mnemonics programmers may use to execute digital logic functions instead of forming them in binary algebra. They are stored in a central processing unit's (CPU) control store.
+These hardware-level instructions move data throughout the data path.
+
+The micro-instruction cycle begins when the microsequencer uses its microprogram counter to fetch the next machine instruction from random-access memory. The next step is to decode the machine instruction by selecting the proper output line to the hardware module.
+The final step is to execute the instruction using the hardware module's set of gates.
+
+Instructions to perform arithmetic are passed through an arithmetic logic unit (ALU). The ALU has circuits to perform elementary operations to add, shift, and compare integers. By combining and looping the elementary operations through the ALU, the CPU performs its complex arithmetic.
+
+Microcode instructions move data between the CPU and the memory controller. Memory controller microcode instructions manipulate two registers. The memory address register is used to access each memory cell's address. The memory data register is used to set and read each cell's contents.
+
+Microcode instructions move data between the CPU and the many computer buses. The disk controller bus writes to and reads from hard disk drives. Data is also moved between the CPU and other functional units via the peripheral component interconnect express bus.
+
+Notes
+
+References
+
+Computer programming
+Software
+In ordinary language, a crime is an unlawful act punishable by a state or other authority. The term crime does not, in modern criminal law, have any simple and universally accepted definition, though statutory definitions have been provided for certain purposes. The most popular view is that crime is a category created by law; in other words, something is a crime if declared as such by the relevant and applicable law. One proposed definition is that a crime or offence (or criminal offence) is an act harmful not only to some individual but also to a community, society, or the state ("a public wrong"). Such acts are forbidden and punishable by law.
+
+The notion that acts such as murder, rape, and theft are to be prohibited exists worldwide. What precisely is a criminal offence is defined by the criminal law of each relevant jurisdiction. While many have a catalogue of crimes called the criminal code, in some common law nations no such comprehensive statute exists.
+
+The state (government) has the power to severely restrict one's liberty for committing a crime. In modern societies, there are procedures to which investigations and trials must adhere. If found guilty, an offender may be sentenced to a form of reparation such as a community sentence, or, depending on the nature of their offence, to undergo imprisonment, life imprisonment or, in some jurisdictions, death. 
+
+Usually, to be classified as a crime, the "act of doing something criminal" (actus reus) mustwith certain exceptionsbe accompanied by the "intention to do something criminal" (mens rea).
+
+While every crime violates the law, not every violation of the law counts as a crime. Breaches of private law (torts and breaches of contract) are not automatically punished by the state, but can be enforced through civil procedure.
+
+Definition 
+The exact definition of crime is a philosophical issue without an agreed upon answer. Fields such as law, politics, sociology, and psychology define crime in different ways. Crimes may be variously considered as wrongs against individuals, against the community, or against the state. The criminality of an action is dependent on its context; acts of violence will be seen as crimes in many circumstances but as permissible or desirable in others. Crime was historically seen as a manifestation of evil, but this has been superseded by modern criminal theories.
+
+Legalism 
+
+Legal and political definitions of crime consider actions that are banned by authorities or punishable by law. Crime is defined by the criminal law of a given jurisdiction, including all actions that are subject to criminal procedure. There is no limit to what can be considered a crime in a legal system, so there may not be a unifying principle used to determine whether an action should be designated as a crime. From a legal perspective, crimes are generally wrong actions that are severe enough to warrant punishment that infringes on the perpetrator's liberties. 
+
+English criminal law and the related common law of Commonwealth countries can define offences that the courts alone have developed over the years, without any actual legislation: common law offences. The courts used the concept of malum in se to develop various common law offences.
+
+Sociology 
+As a sociological concept, crime is associated with actions that cause harm and violate social norms. Under this definition, crime is a type of social construct, and societal attitudes determine what is considered criminal. 
+
+In legal systems based on legal moralism, the predominant moral beliefs of society determine the legal definition as well as the social definition of crime. This system is less prominent in liberal democratic societies that prioritize individualism and multiculturalism over other moral beliefs.
+
+Paternalism defines crime not only as harm to others or to society, but also as harm to the self.
+
+Psychology 
+Psychological definitions consider the state of mind of perpetrators and their relationship with their environment.
+
+Study 
+
+The study of crime is called criminology. Criminology is a subfield of sociology that addresses issues of social norms, social order, deviance, and violence. It includes the motivations and consequences of crime and its perpetrators, as well as preventative measures, either studying criminal acts on an individual level or the relationship of crime and the community. Due to the wide range of concepts associated with crime and the disagreement on a precise definition, the focus of criminology can vary considerably. Various theories within criminology provide different descriptions and explanations for crime, including social control theory, subcultural theory, strain theory, differential association, and labeling theory.
+
+Subfields of criminology and related fields of study include crime prevention, criminal law, crime statistics, anthropological criminology, criminal psychology, criminal sociology, criminal psychiatry, victimology, penology, and forensic science. Besides sociology, criminology is often associated with law and psychology.
+
+Information and statistics about crime in a given jurisdiction are collected as crime estimates, typically produced by national or international agencies. Methods to collect crime statistics may vary, even between jurisdictions within the same nation. Under-reporting of crime is common, particularly in developing nations. Victim studies may be used to determine the frequency of crime in a given population.
+
+Foundational systems
+
+Natural-law theory 
+Justifying the state's use of force to coerce compliance with its laws has proven a consistent theoretical problem. One of the earliest justifications involved the theory of natural law. This posits that the nature of the world or of human beings underlies the standards of morality or constructs them. Thomas Aquinas wrote in the 13th century: "the rule and measure of human acts is the reason, which is the first principle of human acts". He regarded people as by nature rational beings, concluding that it becomes morally appropriate that they should behave in a way that conforms to their rational nature. Thus, to be valid, any law must conform to natural law and coercing people to conform to that law is morally acceptable. In the 1760s, William Blackstone described the thesis:
+
+ "This law of nature, being co-eval with mankind and dictated by God himself, is of course superior in obligation to any other. It is binding over all the globe, in all countries, and at all times: no human laws are of any validity, if contrary to this; and such of them as are valid derive all their force, and all their authority, mediately or immediately, from this original."
+
+But John Austin (1790–1859), an early positivist, applied utilitarianism in accepting the calculating nature of human beings and the existence of an objective morality. He denied that the legal validity of a norm depends on whether its content conforms to morality. Thus in Austinian terms, a moral code can objectively determine what people ought to do, the law can embody whatever norms the legislature decrees to achieve social utility, but every individual remains free to choose what to do. Similarly, H.L.A. Hart saw the law as an aspect of sovereignty, with lawmakers able to adopt any law as a means to a moral end.
+
+Thus the necessary and sufficient conditions for the truth of a proposition of law involved internal logic and consistency, and that the state's agents used state power with responsibility. Ronald Dworkin rejects Hart's theory and proposes that all individuals should expect the equal respect and concern of those who govern them as a fundamental political right. He offers a theory of compliance overlaid by a theory of deference (the citizen's duty to obey the law) and a theory of enforcement, which identifies the legitimate goals of enforcement and punishment. Legislation must conform to a theory of legitimacy, which describes the circumstances under which a particular person or group is entitled to make law, and a theory of legislative justice, which describes the law they are entitled or obliged to make.
+
+There are natural-law theorists who have accepted the idea of enforcing the prevailing morality as a primary function of the law. This view entails the problem that it makes any moral criticism of the law impossible: if conformity with natural law forms a necessary condition for legal validity, all valid law must, by definition, count as morally just. Thus, on this line of reasoning, the legal validity of a norm necessarily entails its moral justice.
+
+History
+
+Early history 
+Restrictions on behavior existed in all prehistoric societies. Crime in early human society was seen as a personal transgression and was addressed by the community as a whole rather than through a formal legal system, often through the use of custom, religion, or the rule of a tribal leader. Some of the oldest extant writings are ancient criminal codes. The earliest known criminal code was the Code of Ur-Nammu (), and the known first criminal code that incorporated retaliatory justice was the Code of Hammurabi. The latter influenced the conception of crime across several civilizations over the following millennia.
+
+The Romans systematized law and applied their system across the Roman Empire. The initial rules of Roman law regarded assaults as a matter of private compensation. The most significant Roman law concept involved dominion. Most acts recognized as crimes in ancient societies, such as violence and theft, have persisted to the modern era. The criminal justice system of Imperial China existed unbroken for over 2,000 years.
+
+Many of the earliest conceptions of crime are associated with sin and corresponded to acts that were believed to invoke the anger of a deity. This idea was further popularized with the development of the Abrahamic religions. The understanding of crime and sin were closely associated with one another for much of history, and conceptions of crime took on many of the ideas associated with sin. Islamic law developed its own system of criminal justice as Islam spread in the seventh and eighth centuries.
+
+Post-classical era 
+In post-classical Europe and East Asia, central government was limited and crime was defined locally. Towns established their own criminal justice systems, while crime in the countryside was defined by the social hierarchies of feudalism. In some places, such as the Russian Empire and the Kingdom of Italy, feudal justice survived into the 19th century.
+
+Common law first developed in England under the rule of Henry II in the 12th century. He established a system of traveling judges that tried accused criminals in each region of England by applying precedent from previous rulings. Legal developments in 12th century England also resulted in the earliest known recording of official crime data.
+
+Modern era 
+In the modern era, crime came to be seen as an issue affecting society rather than conflicts between individuals. Writers such as Thomas Hobbes saw crime as a societal issue as early as the 17th century. Imprisonment developed as a long-term penalty for crime in the 18th century. Increasing urbanization and industrialization in the 19th century caused crime to become an immediate issue that affected society, prompting government intervention in crime and the establishment of criminology as its own field.
+
+Anthropological criminology was popularized by Cesare Lombroso in the late-19th century. This was a biological determinist school of thought based in social darwinism, arguing that certain people are naturally born as criminals. The eugenics movement of the early-20th century similarly held that crime was caused primarily by genetic factors.
+
+The concept of crime underwent a period of change as modernism was widely accepted in the years following World War II. Crime increasingly came to be seen as a societal issue, and criminal law was seen as a means to protect the public from antisocial behavior. This idea was associated with a larger trend in the western world toward social democracy and centre-left politics.
+
+Through most of history, reporting of crime was generally local. The advent of mass media through radio and television in the mid-20th century allowed for the sensationalism of crime. This created well-known stories of criminals such as Jeffrey Dahmer, and it allowed for dramatization that perpetuates misconceptions about crime. Forensic science was popularized in the 1980s, establishing DNA profiling as a new method to prevent and analyze crime.
+
+Types
+
+Violent crime 
+
+Violent crime is crime that involves an act of violent aggression against another person. Common examples of violent crime include homicide, assault, sexual assault, and robbery. Some violent crimes, such as assault, may be committed with the intention of causing harm. Other violent crimes, such as robbery, may use violence to further another goal. Violent crime is distinct from noncriminal types of violence, such as self-defense, use of force, and acts of war. Acts of violence are most often perceived as deviant when they are committed as an overreaction or a disproportionate response to provocation.
+
+Property crime 
+
+Common examples of property crime include burglary, theft, and vandalism.
+
+Examples of financial crimes include counterfeiting, smuggling, tax evasion, and bribery. The scope of financial crimes has expanded significantly since the beginning of modern economics in the 17th century. In occupational crime, the complexity and anonymity of computer systems may help criminal employees camouflage their operations. The victims of the most costly scams include banks, brokerage houses, insurance companies, and other large financial institutions.
+
+Public order crime 
+
+Public order crime is crime that violates a society's norms about what constitutes socially acceptable behavior. Examples of public order crimes include gambling, drug-related crime, public intoxication, prostitution, loitering, breach of the peace, panhandling, vagrancy, street harassment, excessive noise, and littering. Public order crime is associated with the broken windows theory, which posits that public order crimes increase the likelihood of other types of crime. Some public order crimes are considered victimless crimes in which no specific victim an be identified. Most nations in the Western world have moved toward decriminalization of victimless crimes in the modern era.
+
+Adultery, fornication, blasphemy, apostasy, and invoking the name of God are commonly recognized as crimes in theocratic societies or those heavily influenced by religion.
+
+Political crime 
+
+Political crime is crime that directly challenges or threatens the state. Examples of political crimes include subversion, rebellion, treason, mutiny, espionage, sedition, terrorism, riot, and unlawful assembly. Political crimes are associated with the political agenda of a given state, and they are necessarily applied against political dissidents. Due to their unique relation to the state, political crimes are often encouraged by one nation against another, and it is political alignment rather than the act itself that determines criminality. State crime that is carried out by the state to repress law-abiding citizens may also be considered political crime.
+
+Inchoate crime 
+
+Inchoate crime is crime that is carried out in anticipation of other illegal actions but does not cause direct harm. Examples of inchoate crimes include attempt and conspiracy. Inchoate crimes are defined by substantial action to facilitate a crime with the intention of the crime's occurrence. This is distinct from simple preparation for or consideration of criminal activity. They are unique in that renunciation of criminal intention is generally enough to absolve the perpetrator of criminal liability, as their actions are no longer facilitating a potential future crime.
+
+Participants
+
+Criminal 
+A criminal is an individual who commits a crime. What constitutes a criminal can vary depending on the context and the law, and it often carries a pejorative connotation. Criminals are often seen as embodying certain stereotypes or traits and are seen as a distinct type of person from law-abiding citizens. Despite this, no mental or physical trend is identifiable that differentiates criminals from non-criminals. Public response to criminals may be indignant or sympathetic. Indignant responses involve resentment and a desire for vengeance, wishing to see criminals removed from society or made to suffer for harm that they cause. Sympathetic responses involve compassion and understanding, seeking to rehabilitate or forgive criminals and absolve them of blame.
+
+Victim 
+A victim is an individual who has been treated unjustly or made to suffer. In the context of crime, the victim is the individual that is harmed by a violation of criminal law. Victimization is associated with post-traumatic stress and a long-term decrease in quality of life. Victimology is the study of victims, including their role in crime and how they are affected.
+
+Several factors affect an individual's likelihood of becoming a victim. Some factors may cause victims of crime to experience short-term or long-term "repeat victimization". Common long-term victims are those that have close relationships with the criminal, manifesting in crimes such as domestic violence, embezzlement, child abuse, and bullying. Repeat victimization may also occur when a potential victim appears to be a viable target, such as when indicating wealth in a less affluent region. Many of the traits that indicate criminality also indicate victimality; victims of crime are more likely to engage in unlawful behavior and respond to provocation. Overall demographic trends of victims and criminals are often similar, and victims are more likely to have engaged in criminal activities themselves.
+
+The victims may only want compensation for the injuries suffered, while remaining indifferent to a possible desire for deterrence. Victims, on their own, may lack the economies of scale that could allow them to administer a penal system, let alone to collect any fines levied by a court. Historically, from ancient times until the 19th century, many societies believed that non-human animals were capable of committing crimes, and prosecuted and punished them accordingly. Prosecutions of animals gradually dwindled during the 19th century, although a few were recorded as late as the 1910s and 1920s.
+
+Criminal law 
+
+Virtually all countries in the 21st century have criminal law grounded in civil law, common law, Islamic law, or socialist law. Historically, criminal codes have often divided criminals by class or caste, prescribing different penalties depending on status. In some tribal societies, an entire clan is recognized as liable for a crime. In many cases, disputes over a crime in this system lead to a feud that lasts over several generations.
+
+Criminalization 
+
+The state determines what actions are considered criminal in the scope of the law. Criminalization has significant human rights considerations, as it can infringe on rights of autonomy and subject individuals to unjust punishment.
+
+Criminal justice
+
+Law enforcement 
+
+The enforcement of criminal law seeks to prevent crime and sanction crimes that do occur. This enforcement is carried out by the state through law enforcement agencies, such as police, which are empowered to arrest suspected perpetrators of crimes. Law enforcement may focus on policing individual crimes, or it may focus on bringing down overall crime rates. One common variant, community policing, seeks to prevent crime by integrating police into the community and public life.
+
+Criminal procedure 
+
+When the perpetrator of a crime is found guilty of the crime, the state delivers a sentence to determine the penalty for the crime.
+
+Corrections and punishment 
+
+Authorities may respond to crime through corrections, carrying out punishment as a means to censure the criminal act. Punishment is generally reserved for serious offenses. Individuals regularly engage in activity that could be scrutinized under criminal law but are deemed inconsequential. Retributive justice seeks to create a system of accountability and punish criminals in a way that knowingly causes suffering. This may arise out of a feeling that criminals deserve to suffer and that punishment should exist for its own sake. The existence of punishment also creates an effect of deterrence that discourages criminal action for fear of punishment. 
+
+Rehabilitation seeks to understand and mitigate the causes of a criminal's unlawful action to prevent recidivism. Different criminological theories propose different methods of rehabilitation, including strengthening social networks, reducing poverty, influencing values, and providing therapy for physical and mental ailments. Rehabilitative programs may include counseling or vocational education.
+
+Developed nations are less likely to use physical punishments. Instead, they will impose financial penalties or imprisonment. In places with widespread corruption or limited rule of law, crime may be punished extralegally through mob rule and lynching.
+
+Whether a crime can be resolved through financial compensation varies depending on the culture and the specific context of the crime. Historically, many societies have absolved acts of homicide through compensation to the victim's relatives.
+
+Liability 
+
+If a crime is committed, the individual responsible is considered to be liable for the crime. For liability to exist, the individual must be capable of understanding the criminal process and the relevant authority must have legitimate power to establish what constitutes a crime.
+
+International criminal law 
+
+International criminal law typically addresses serious offenses, such as genocide, crimes against humanity, and war crimes. As with all international law, these laws are created through treaties and international custom, and they are defined through the consensus of the involved states. International crimes are not prosecuted through a standard legal system, though international organizations may establish tribunals to investigate and rule on egregious offenses such as genocide.
+
+Causes and correlates 
+
+Basic analysis of criminal behavior is determined by a cost–benefit analysis. A person that commits a criminal act typically believes that its benefits will outweigh the risk of being caught and punished. Negative economic factors (such as unemployment and income inequality) significantly increase the incentive to commit crime, while severe punishments decrease the incentive in some cases.
+
+Social factors similarly affect the likelihood of criminal activity. Crime corresponds heavily with social integration; groups that are less integrated with society or that are forcibly integrated with society are more likely to engage in crime. Involvement in the community, such as through a church, decreases the likelihood of crime, while associating with criminals increases the likelihood of becoming a criminal as well.
+
+There is no known genetic cause of crime. Some genes have been found to affect traits that may incline individuals toward criminal activity, but no biological or physiological trait has been found to directly cause or compel criminal actions. One biological factor is the disparity between men and women, as men are significantly more likely to commit crimes than women in virtually all cultures. Crimes committed by men also tend to be more severe than those committed by women.
+
+Public perception 
+Crime is often a high priority political issue in developed countries, regardless of the country's crime rates. People that are not regularly exposed to crime most often experience it through media, including news reporting and crime fiction. Exposure of crime through news stories is associated with alarmism and inaccurate perceptions of crime trends. Selection bias in new stories about criminals significantly over-represent the prevalence of violent crime, and news reporting will often overemphasize a specific type of crime for a period of time, creating a "crime wave" effect.
+
+As public opinion of morality changes over time, actions that were once condemned as crimes may be considered justifiable.
+
+See also 
+
+ Crime displacement
+ Law and order (politics)
+ Rule of law
+ Organized crime
+
+Notes
+
+References
+ 
+ 
+ 
+ 
+ 
+ Polinsky, A. Mitchell. (1980). "Private versus Public Enforcement of Fines". The Journal of Legal Studies, Vol. IX, No. 1, (January), pp. 105–127.
+ Polinsky, A. Mitchell & Shavell, Steven. (1997). On the Disutility and Discounting of Imprisonment and the Theory of Deterrence, NBER Working Papers 6259, National Bureau of Economic Research, Inc.
+
+External links 
+ 
+
+ 
+Criminal law
+ 
+Morality
+The California Institute of Technology (branded as Caltech or CIT) is a private research university in Pasadena, California. The university is responsible for many modern scientific advancements and is among a small group of institutes of technology in the United States which are strongly devoted to the instruction of pure and applied sciences. Due to its history of technological innovation, Caltech has been considered to be one of the world's top research universities.
+
+The institution was founded as a preparatory and vocational school by Amos G. Throop in 1891 and began attracting influential scientists such as George Ellery Hale, Arthur Amos Noyes, and Robert Andrews Millikan in the early 20th century. The vocational and preparatory schools were disbanded and spun off in 1910 and the college assumed its present name in 1920. In 1934, Caltech was elected to the Association of American Universities, and the antecedents of NASA's Jet Propulsion Laboratory, which Caltech continues to manage and operate, were established between 1936 and 1943 under Theodore von Kármán.
+
+Caltech has six academic divisions with strong emphasis on science and engineering, managing $332 million in 2011 in sponsored research. Its  primary campus is located approximately  northeast of downtown Los Angeles. First-year students are required to live on campus, and 95% of undergraduates remain in the on-campus House System at Caltech. Although Caltech has a strong tradition of practical jokes and pranks, student life is governed by an honor code which allows faculty to assign take-home examinations. The Caltech Beavers compete in 13 intercollegiate sports in the NCAA Division III's Southern California Intercollegiate Athletic Conference (SCIAC).
+
+Scientists and engineers at or from the university have played an essential role in many modern scientific breakthroughs and innovations, including advances in sustainability science, quantum physics, earthquake monitoring, protein engineering, and soft robotics. , there are 79 Nobel laureates who have been affiliated with Caltech, making it the institution with the highest number of Nobelists per capita in America. This includes 46 alumni and faculty members (47 prizes, with chemist Linus Pauling being the only individual in history to win two unshared prizes). In addition, four Fields Medalists and six Turing Award winners have been affiliated with Caltech.
+
+History
+
+Throop College 
+
+Caltech started as a vocational school founded in present-day Old Pasadena on Fair Oaks Avenue and Chestnut Street on September 23, 1891, by local businessman and politician Amos G. Throop. The school was known successively as Throop University, Throop Polytechnic Institute (and Manual Training School) and Throop College of Technology before acquiring its current name in 1920. The vocational school was disbanded and the preparatory program was split off to form the independent Polytechnic School in 1907.
+
+At a time when scientific research in the United States was still in its infancy, George Ellery Hale, a solar astronomer from the University of Chicago, founded the Mount Wilson Observatory in 1904. He joined Throop's board of trustees in 1907, and soon began developing it and the whole of Pasadena into a major scientific and cultural destination. He engineered the appointment of James A. B. Scherer, a literary scholar untutored in science but a capable administrator and fund-raiser, to Throop's presidency in 1908. Scherer persuaded retired businessman and trustee Charles W. Gates to donate $25,000 in seed money to build Gates Laboratory, the first science building on campus.
+
+World Wars 
+
+In 1910, Throop moved to its current site. Arthur Fleming donated the land for the permanent campus site. Theodore Roosevelt delivered an address at Throop Institute on March 21, 1911, and he declared:
+
+I want to see institutions like Throop turn out perhaps ninety-nine of every hundred students as men who are to do given pieces of industrial work better than any one else can do them; I want to see those men do the kind of work that is now being done on the Panama Canal and on the great irrigation projects in the interior of this country—and the one-hundredth man I want to see with the kind of cultural scientific training that will make him and his fellows the matrix out of which you can occasionally develop a man like your great astronomer, George Ellery Hale.
+
+In the same year, a bill was introduced in the California Legislature calling for the establishment of a publicly funded "California Institute of Technology", with an initial budget of a million dollars, ten times the budget of Throop at the time. The board of trustees offered to turn Throop over to the state, but the presidents of Stanford University and the University of California successfully lobbied to defeat the bill, which allowed Throop to develop as the only scientific research-oriented education institute in southern California, public or private, until the onset of the World War II necessitated the broader development of research-based science education. The promise of Throop attracted physical chemist Arthur Amos Noyes from MIT to develop the institution and assist in establishing it as a center for science and technology.
+
+With the onset of World War I, Hale organized the National Research Council to coordinate and support scientific work on military problems. While he supported the idea of federal appropriations for science, he took exception to a federal bill that would have funded engineering research at land-grant colleges, and instead sought to raise a $1 million national research fund entirely from private sources. To that end, as Hale wrote in The New York Times:
+
+Throop College of Technology, in Pasadena California has recently afforded a striking illustration of one way in which the Research Council can secure co-operation and advance scientific investigation. This institution, with its able investigators and excellent research laboratories, could be of great service in any broad scheme of cooperation. President Scherer, hearing of the formation of the council, immediately offered to take part in its work, and with this object, he secured within three days an additional research endowment of one hundred thousand dollars.
+
+Through the National Research Council, Hale simultaneously lobbied for science to play a larger role in national affairs, and for Throop to play a national role in science. The new funds were designated for physics research, and ultimately led to the establishment of the Norman Bridge Laboratory, which attracted experimental physicist Robert Andrews Millikan from the University of Chicago in 1917. During the course of the war, Hale, Noyes and Millikan worked together in Washington on the NRC. Subsequently, they continued their partnership in developing Caltech.
+
+Under the leadership of Hale, Noyes, and Millikan (aided by the booming economy of Southern California), Caltech grew to national prominence in the 1920s and concentrated on the development of Roosevelt's "Hundredth Man". On November 29, 1921, the trustees declared it to be the express policy of the institute to pursue scientific research of the greatest importance and at the same time "to continue to conduct thorough courses in engineering and pure science, basing the work of these courses on exceptionally strong instruction in the fundamental sciences of mathematics, physics, and chemistry; broadening and enriching the curriculum by a liberal amount of instruction in such subjects as English, history, and economics; and vitalizing all the work of the Institute by the infusion in generous measure of the spirit of research". In 1923, Millikan was awarded the Nobel Prize in Physics. In 1925, the school established a department of geology and hired William Bennett Munro, then chairman of the division of History, Government, and Economics at Harvard University, to create a division of humanities and social sciences at Caltech. In 1928, a division of biology was established under the leadership of Thomas Hunt Morgan, the most distinguished biologist in the United States at the time, and discoverer of the role of genes and the chromosome in heredity. In 1930, Kerckhoff Marine Laboratory was established in Corona del Mar under the care of Professor George MacGinitie. In 1926, a graduate school of aeronautics was created, which eventually attracted Theodore von Kármán. Kármán later helped create the Jet Propulsion Laboratory, and played an integral part in establishing Caltech as one of the world's centers for rocket science. In 1928, construction of the Palomar Observatory began.
+
+Millikan served as "Chairman of the Executive Council" (effectively Caltech's president) from 1921 to 1945, and his influence was such that the institute was occasionally referred to as "Millikan's School". Millikan initiated a visiting-scholars program soon after joining Caltech. Notable scientists who accepted his invitation include Paul Dirac, Erwin Schrödinger, Werner Heisenberg, Hendrik Lorentz and Niels Bohr. Albert Einstein arrived on the Caltech campus for the first time in 1931 to polish up his Theory of General Relativity, and he returned to Caltech subsequently as a visiting professor in 1932 and 1933.
+
+During World War II, Caltech was one of 131 colleges and universities nationally that took part in the V-12 Navy College Training Program which offered students a path to a Navy commission. The United States Navy also maintained a naval training school for aeronautical engineering, resident inspectors of ordinance and naval material, and a liaison officer to the National Defense Research Committee on campus.
+
+Project Vista 
+
+From April to December 1951, Caltech was the host of a federal classified study, Project Vista. The selection of Caltech as host for the project was based on the university's expertise in rocketry and nuclear physics. In response to the war in Korea and the pressure from the Soviet Union, the project was Caltech's way of assisting the federal government in its effort to increase national security. The project was created to study new ways of improving the relationship between tactical air support and ground troops. The Army, Air Force, and Navy sponsored the project; however, it was under contract with the Army. The study was named after the hotel, Vista del Arroyo Hotel, which housed the study. The study operated under a committee with the supervision of President Lee A. DuBridge. William A. Fowler, a professor at Caltech, was selected as research director. More than a fourth of Caltech's faculty and a group of outside scientists staffed the project. Moreover, the number increases if one takes into account visiting scientists, military liaisons, secretarial, and security staff. In compensation for its participation, the university received about $750,000.
+
+Post-war growth 
+From the 1950s to 1980s, Caltech was the home of Murray Gell-Mann and Richard Feynman, whose work was central to the establishment of the Standard Model of particle physics. Feynman was also widely known outside the physics community as an exceptional teacher and a colorful, unconventional character.
+
+During Lee A. DuBridge's tenure as Caltech's president (1946–1969), Caltech's faculty doubled and the campus tripled in size. DuBridge, unlike his predecessors, welcomed federal funding of science. New research fields flourished, including chemical biology, planetary science, nuclear astrophysics, and geochemistry. A 200-inch telescope was dedicated on nearby Palomar Mountain in 1948 and remained the world's most powerful optical telescope for over forty years.
+
+Caltech opened its doors to female undergraduates during the presidency of Harold Brown in 1970, and they made up 14% of the entering class. The portion of female undergraduates has been increasing since then.
+
+Protests by Caltech students are rare. The earliest was a 1968 protest outside the NBC Burbank studios, in response to rumors that NBC was to cancel Star Trek. In 1973, the students from Dabney House protested a presidential visit with a sign on the library bearing the simple phrase "Impeach Nixon". The following week, Ross McCollum, president of the National Oil Company, wrote an open letter to Dabney House stating that in light of their actions he had decided not to donate one million dollars to Caltech. The Dabney family, being Republicans, disowned Dabney House after hearing of the protest.
+
+21st century 
+Since 2000, the Einstein Papers Project has been located at Caltech. The project was established in 1986 to assemble, preserve, translate, and publish papers selected from the literary estate of Albert Einstein and from other collections.
+
+In fall 2008, the freshman class was 42% female, a record for Caltech's undergraduate enrollment. In the same year, the Institute concluded a six-year-long fund-raising campaign. The campaign raised more than $1.4 billion from about 16,000 donors. Nearly half of the funds went into the support of Caltech programs and projects.
+
+In 2010, Caltech, in partnership with Lawrence Berkeley National Laboratory and headed by Professor Nathan Lewis, established a DOE Energy Innovation Hub aimed at developing revolutionary methods to generate fuels directly from sunlight. This hub, the Joint Center for Artificial Photosynthesis, will receive up to $122 million in federal funding over five years.
+
+Since 2012, Caltech began to offer classes through massive open online courses (MOOCs) under Coursera, from 2013, edX, and bootcamps.
+
+Jean-Lou Chameau, the eighth president, announced on February 19, 2013, that he would be stepping down to accept the presidency at King Abdullah University of Science and Technology. Thomas F. Rosenbaum was announced to be the ninth president of Caltech on October 24, 2013, and his term began on July 1, 2014.
+
+In 2019, Caltech received a gift of $750 million for sustainability research from the Resnick family of The Wonderful Company. The gift is the largest ever for environmental sustainability research and the second-largest private donation to a US academic institution (after Bloomberg's gift of $1.8 billion to Johns Hopkins University in 2018).
+
+On account of President Robert A. Millikan's affiliation with the Human Betterment Foundation, in January 2021, the Caltech Board of Trustees authorized the removal of Millikan's name (and the names of five other historical figures affiliated with the Foundation), from campus buildings.
+
+Campus 
+
+Caltech's  primary campus is located in Pasadena, California, approximately  northeast of downtown Los Angeles. It is within walking distance of Old Town Pasadena and the Pasadena Playhouse District and therefore the two locations are frequent getaways for Caltech students.
+
+In 1917 Hale hired architect Bertram Goodhue to produce a master plan for the  campus. Goodhue conceived the overall layout of the campus and designed the physics building, Dabney Hall, and several other structures, in which he sought to be consistent with the local climate, the character of the school, and Hale's educational philosophy. Goodhue's designs for Caltech were also influenced by the traditional Spanish mission architecture of Southern California.
+
+During the 1960s, Caltech underwent considerable expansion, in part due to the philanthropy of alumnus Arnold O. Beckman. In 1953, Beckman was asked to join the Caltech Board of Trustees. In 1964, he became its chairman. Over the next few years, as Caltech's president emeritus David Baltimore describes it, Arnold Beckman and his wife Mabel "shaped the destiny of Caltech".
+
+In 1971 a magnitude-6.6 earthquake in San Fernando caused some damage to the Caltech campus. Engineers who evaluated the damage found that two historic buildings dating from the early days of the Institute—Throop Hall and the Goodhue-designed Culbertson Auditorium—had cracked.
+
+New additions to the campus include the Cahill Center for Astronomy and Astrophysics and the Walter and Leonore Annenberg Center for Information Science and Technology, which opened in 2009, and the Warren and Katherine Schlinger Laboratory for Chemistry and Chemical Engineering followed in March 2010. The institute also concluded an upgrading of the South Houses in 2006. In late 2010, Caltech completed a 1.3 MW solar array projected to produce approximately 1.6 GWh in 2011.
+
+Organization and administration 
+
+Caltech is incorporated as a non-profit corporation and is governed by a privately appointed 46-member board of trustees who serve five-year terms of office and retire at the age of 72. The trustees elect a president to serve as the chief executive officer of the institute and administer the affairs on the institute on behalf of the board, a provost who serves as the chief academic officer of the institute below the president, and ten other vice presidential and other senior positions. Thomas F. Rosenbaum became the ninth president of Caltech in 2014. Caltech's endowment is governed by a permanent trustee committee and administered by an investment office.
+
+The institute is organized into six primary academic divisions: Biology and Biological Engineering, Chemistry and Chemical Engineering, Engineering and Applied Science, Geological and Planetary Sciences, Humanities and Social Sciences, Physics, Mathematics, and Astronomy. The voting faculty of Caltech include all professors, instructors, research associates and fellows, and the University Librarian. Faculty are responsible for establishing admission requirements, academic standards, and curricula. The Faculty Board is the faculty's representative body and consists of 18 elected faculty representatives as well as other senior administration officials. Full-time professors are expected to teach classes, conduct research, advise students, and perform administrative work such as serving on committees.
+
+Founded in 1930s, the Jet Propulsion Laboratory (JPL) is a federally funded research and development center (FFRDC) owned by NASA and operated as a division of Caltech through a contract between NASA and Caltech. In 2008, JPL spent over $1.6 billion on research and development and employed over 5,000 project-related and support employees. The JPL Director also serves as a Caltech Vice President and is responsible to the President of the Institute for the management of the laboratory.
+
+Academics 
+Caltech is a small four-year, highly residential research university with slightly more students in graduate programs than undergraduate. The institute has been accredited by the Western Association of Schools and Colleges since 1949. Caltech is on the quarter system: the fall term starts in late September and ends before Christmas, the second term starts after New Year's Day and ends in mid-March, and the third term starts in late March or early April and ends in early June.
+
+Rankings
+
+Caltech is consistently ranked within the top ten universities in the world, and within the top four in the United States, by major global ranking systems. In 2021, Caltech ranked 6th globally based on aggregate world university rankings of THE, QS, and ARWU. For 2022, U.S. News & World Report ranked Caltech as tied for 9th in the United States among national universities overall, 11th for most innovative, and 15th for best value. U.S. News & World Report also ranked the graduate programs in chemistry and earth sciences first among national universities.
+
+Caltech was ranked 1st internationally between 2011 and 2016 by the Times Higher Education World University Rankings. Caltech was ranked as the best university in the world in two categories: Engineering & Technology and Physical Sciences. It was also found to have the highest faculty citation rate in the world.
+
+Admissions
+
+Admission to Caltech is extremely rigorous.  Prior to going test blind, Caltech students had some of the highest test scores in the nation. In 2022, Caltech was ranked by CBS News as the 3rd hardest college in America to gain acceptance to. For the freshmen who enrolled in 2019 (Class of 2023) the middle 50% range of SAT were 740–780 for evidence-based reading and writing and 790–800 for math, and 1530–1570 total. The middle 50% range ACT Composite score was 35–36. The SAT Math Level 2 middle 50% range was 800–800. The middle 50% range for the SAT Physics Subject Test was 760–800; SAT Chemistry Subject Test was 760–800; 
+SAT Biology Subject Tests was 760–800. In June 2020, Caltech announced a test-blind policy where they would not require nor consider test scores for the next two years; in July 2021, the moratorium was extended by another year and then extended further. The institute is need-blind for domestic applicants.
+
+For the Class of 2026 (enrolled Fall 2022), Caltech received 16662 applications and accepted 448 applicants for a 2.7% admit rate; 224 enrolled. The class included 48% women and 52% men. For the Class of 2025, 32% were of underrepresented ancestry (which includes students who self-identify as American Indian/Alaska Native, Hispanic/Latino, Black/African American, and/or Native Hawaiian/Pacific Islander), and 6% were foreign students. For the Class of 2027 (enrolled Fall 2023), Caltech had over 270 commits of 412 admits, at a yield rate of 66–67%.
+
+Tuition and financial aid 
+Undergraduate tuition for the 2021–2022 school year was $56,394 and total annual costs were estimated to be $79,947 excluding the Caltech Student Health Insurance Plan. In 2012–2013, Caltech awarded $17.1 million in need-based aid, $438k in non-need-based aid, and $2.51 million in self-help support to enrolled undergraduate students. The average financial aid package of all students eligible for aid was $38,756 and students graduated with an average debt of $15,090.
+
+Undergraduate program 
+
+The full-time, four-year undergraduate program emphasizes instruction in the arts and sciences and has high graduate coexistence. Caltech offers 28 majors (called "options") and 12 minors across all six academic divisions. Caltech also offers interdisciplinary programs in Applied Physics, Biochemistry, Bioengineering, Computation and Neural Systems, Control and Dynamical Systems, Environmental Science and Engineering, Geobiology and Astrobiology, Geochemistry, and Planetary Astronomy. The most popular options are Chemical Engineering, Computer Science, Electrical Engineering, Mechanical Engineering and Physics. The most popular majors of the class of 2023 were Computer Science, Mechanical Engineering, Physics, and Electrical Engineering.
+
+Prior to the entering class of 2013, Caltech required students to take a core curriculum of five terms of mathematics, five terms of physics, two terms of chemistry, one term of biology, two terms of lab courses, one term of scientific communication, three terms of physical education, and 12 terms of humanities and social science. Since 2013, only three terms each of mathematics and physics have been required by the institute, with the remaining two terms each required by certain options.
+
+A typical class is worth 9 academic units and given the extensive core curriculum requirements in addition to individual options' degree requirements, students need to take an average of 40.5 units per term (more than four classes) to graduate in four years. 36 units is the minimum full-time load, 48 units is considered a heavy load, and registrations above 51 units require an overload petition. Approximately 20 percent of students double-major. This is achievable since the humanities and social sciences majors have been designed to be done in conjunction with a science major. Although choosing two options in the same division is discouraged, it is still possible.
+
+First-year students are enrolled in first-term classes based upon results of placement exams in math, physics, chemistry, and writing and take all classes in their first two terms on a Pass/Fail basis. There is little competition; collaboration on homework is encouraged and the honor system encourages take-home tests and flexible homework schedules. Caltech offers co-operative programs with other schools, such as the Pasadena Art Center College of Design and Occidental College.
+
+According to a  PayScale study, Caltech graduates earn a median early career salary of $83,400 and $143,100 mid-career, placing them in the top 5 among graduates of US colleges and universities. The average net return on investment over a period of 20 years is $887,000, the tenth-highest among US colleges.
+
+Caltech offers Army and Air Force ROTC in cooperation with the University of Southern California.
+
+Graduate program 
+
+The graduate instructional programs emphasize doctoral studies and are dominated by science, technology, engineering, and mathematics fields. The institute offers graduate degree programs for the Master of Science, Engineer's Degree, Doctor of Philosophy, BS/MS and MD/PhD, with the majority of students in the PhD program. The most popular options are Chemistry, Physics, Biology, Electrical Engineering and Chemical Engineering. Applicants for graduate studies are required to take the GRE. GRE Subject scores are either required or strongly recommended by several options. A joint program between Caltech and the Keck School of Medicine of the University of Southern California, and the UCLA David Geffen School of Medicine grants MD/PhD degrees. Students in this program do their preclinical and clinical work at USC or UCLA, and their PhD work with any member of the Caltech faculty, including the Biology, Chemistry, and Engineering and Applied Sciences Divisions. The MD degree would be from USC or UCLA and the PhD would be awarded from Caltech.
+
+The research facilities at Caltech are available to graduate students, but there are opportunities for students to work in facilities of other universities, research centers as well as private industries. The graduate student to faculty ratio is 4:1.
+
+Approximately 99 percent of doctoral students have full financial support. Financial support for graduate students comes in the form of fellowships, research assistantships, teaching assistantships or a combination of fellowship and assistantship support.
+
+Graduate students are bound by the honor code, as are the undergraduates, and the Graduate Honor Council oversees any violations of the code.
+
+Research 
+
+Caltech is classified among "R1: Doctoral Universities – Very High Research Activity". Caltech was elected to the Association of American Universities in 1934 and remains a research university with "very high" research activity, primarily in STEM fields. Caltech manages research expenditures of $270 million annually, 66th among all universities in the U.S. and 17th among private institutions without medical schools for 2008. The largest federal agencies contributing to research are NASA, National Science Foundation, Department of Health and Human Services, Department of Defense, and Department of Energy. Caltech received $144 million in federal funding for the physical sciences, $40.8 million for the life sciences, $33.5 million for engineering, $14.4 million for environmental sciences, $7.16 million for computer sciences, and $1.97 million for mathematical sciences in 2008.
+
+The institute was awarded an all-time high funding of $357 million in 2009. Active funding from the National Science Foundation Directorate of Mathematical and Physical Science (MPS) for Caltech stands at $343 million , the highest for any educational institution in the nation, and higher than the total funds allocated to any state except California and New York.
+
+In 2005, Caltech had  dedicated to research:  to physical sciences,  to engineering, and  to biological sciences.
+
+In addition to managing JPL, Caltech also operates the Palomar Observatory in San Diego County, the Owens Valley Radio Observatory in Bishop, California, the Submillimeter Observatory and W. M. Keck Observatory at the Mauna Kea Observatory, the Laser Interferometer Gravitational-Wave Observatory at Livingston, Louisiana and Richland, Washington, and Kerckhoff Marine Laboratory in Corona del Mar, California. The Institute launched the Kavli Nanoscience Institute at Caltech in 2006, the Keck Institute for Space Studies in 2008, and is also the current home for the Einstein Papers Project. The Spitzer Science Center (SSC), part of the Infrared Processing and Analysis Center located on the Caltech campus, is the data analysis and community support center for NASA's Spitzer Space Telescope.
+
+Caltech partnered with UCLA to establish a Joint Center for Translational Medicine (UCLA-Caltech JCTM), which conducts experimental research into clinical applications, including the diagnosis and treatment of diseases such as cancer.
+
+Caltech operates several TCCON stations as part of an international collaborative effort of measuring greenhouse gases globally. One station is on campus.
+
+Undergraduates at Caltech are also encouraged to participate in research. About 80% of the class of 2010 did research through the annual Summer Undergraduate Research Fellowships (SURF) program at least once during their stay, and many continued during the school year. Students write and submit SURF proposals for research projects in collaboration with professors, and about 70 percent of applicants are awarded SURFs. The program is open to both Caltech and non-Caltech undergraduate students. It serves as preparation for graduate school and helps to explain why Caltech has the highest percentage of alumni who go on to receive a PhD of all the major universities.
+
+The licensing and transferring of technology to the commercial sector is managed by the Office of Technology Transfer (OTT). OTT protects and manages the intellectual property developed by faculty members, students, other researchers, and JPL technologists. Caltech receives more invention disclosures per faculty member than any other university in the nation. , 1891 patents were granted to Caltech researchers since 1969.
+
+Student life
+
+House system 
+
+During the early 20th century, a Caltech committee visited several universities and decided to transform the undergraduate housing system from fraternities to a house system. Four South Houses (or Hovses, as styled in the stone engravings) were built: Blacker House, Dabney House, Fleming House and Ricketts House. In the 1960s, three North Houses were built: Lloyd House, Page House, and Ruddock House, and during the 1990s, Avery House. The four South Houses closed for renovation in 2005 and reopened in 2006. The latest addition to residential life at Caltech is Bechtel Residence, which opened in 2018. It is not affiliated with the house system. All first- and second-year students live on campus in the house system or in the Bechtel Residence.
+
+On account of Albert B. Ruddock's affiliation with the Human Betterment Foundation, in January 2021, the Caltech Board of Trustees authorized the removal of Ruddock's name from campus buildings. Ruddock House was renamed as the Grant D. Venerable House.
+
+Athletics 
+
+Caltech has athletic teams in baseball, men's and women's basketball, cross country, men's and women's soccer, swimming and diving, men's and women's tennis, track and field, women's volleyball, and men's and women's water polo. Caltech's mascot is the Beaver, a homage to nature's engineer. Its teams are members of the NCAA Division III and compete in the Southern California Intercollegiate Athletic Conference (SCIAC), which Caltech co-founded in 1915.
+
+On January 6, 2007, the Beavers' men's basketball team snapped a 207-game losing streak to Division III schools, beating Bard College 81–52. It was their first Division III victory since 1996.
+Until their win over Occidental College on February 22, 2011 the team had not won a game in SCIAC play since 1985. Ryan Elmquist's free throw with 3.3 seconds in regulation gave the Beavers the victory. The documentary film Quantum Hoops concerns the events of the Beavers' 2005–06 season.
+
+On January 13, 2007, the Caltech women's basketball team snapped a 50-game losing streak, defeating the Pomona-Pitzer Sagehens 55–53. The women's program, which entered the SCIAC in 2002, garnered their first conference win. On the bench as honorary coach for the evening was Robert Grubbs, 2005 Nobel laureate in Chemistry. The team went on to beat Whittier College on February 10, for its second SCIAC win, and placed its first member on the All Conference team.
+
+In 2007, 2008, and 2009, the women's table tennis team (a club team) competed in nationals. The women's Ultimate club team, known as "Snatch", has also been very successful in recent years, ranking 44 of over 200 college teams in the Ultimate Player's Association.
+
+On February 2, 2013, the Caltech baseball team ended a 228-game losing streak, the team's first win in nearly 10 years.
+
+The track and field team's home venue is at the South Athletic Field in Tournament Park, the site of the first Rose Bowl Game.
+
+The school also sponsored an intercollegiate football team from 1973 through 1977, and played part of its home schedule at the Rose Bowl.
+
+Performing and visual arts 
+The Caltech/Occidental College Orchestra is a full seventy-piece orchestra composed of students, faculty, and staff at Caltech and nearby Occidental College. The orchestra gives three pairs of concerts annually, at both Caltech and Occidental College. There are also two Caltech Jazz Bands and a Concert Band, as well as an active chamber music program. For vocal music, Caltech has a mixed-voice Glee Club and the smaller Chamber Singers. The theater program at Caltech is known as TACIT, or Theater Arts at the California Institute of Technology. There are two to three plays organized by TACIT per year, and they were involved in the production of the PHD Movie, released in 2011.
+
+Student life traditions
+
+Annual events 
+Every Halloween, Dabney House conducts the infamous "Millikan pumpkin-drop experiment" from the top of Millikan Library, the highest point on campus. According to tradition, a claim was once made that the shattering of a pumpkin frozen in liquid nitrogen and dropped from a sufficient height would produce a triboluminescent spark. This yearly event involves a crowd of observers, who try to spot the elusive spark. The title of the event is an oblique reference to the famous Millikan oil-drop experiment which measured e, the elemental unit of electrical charge.
+
+On Ditch Day, the seniors ditch school, leaving behind elaborately designed tasks and traps at the doors of their rooms to prevent underclassmen from entering. Over the years this has evolved to the point where many seniors spend months designing mechanical, electrical, and software obstacles to confound the underclassmen. Each group of seniors designs a "stack" to be solved by a handful of underclassmen. The faculty have been drawn into the event as well, and cancel all classes on Ditch Day so the underclassmen can participate in what has become a highlight of the academic year.
+
+Another long-standing tradition is the playing of Wagner's "Ride of the Valkyries" at 7:00 each morning during finals week with the largest, loudest speakers available. The playing of that piece is not allowed at any other time (except if one happens to be listening to the entire 14 hours and 5 minutes of The Ring Cycle), and any offender is dragged into the showers to be drenched in cold water fully dressed.
+
+Pranks 
+
+Caltech students have been known for their many pranks (also known as "RFs").
+
+The two most famous in recent history are the changing of the Hollywood Sign to read "Caltech", by judiciously covering up certain parts of the letters, and the changing of the scoreboard to read Caltech 38, MIT 9 during the 1984 Rose Bowl Game. But the most famous of all occurred during the 1961 Rose Bowl Game, where Caltech students altered the flip-cards that were raised by the stadium attendees to display "Caltech", and several other "unintended" messages. This event is now referred to as the Great Rose Bowl Hoax.
+
+In recent years, pranking has been officially encouraged by Tom Mannion, Caltech's Assistant VP for Student Affairs and Campus Life. "The grand old days of pranking have gone away at Caltech, and that's what we are trying to bring back," reported the Boston Globe.
+
+In December 2011, Caltech students went to New York and pulled a prank in Manhattan's Greenwich Village. The prank involved making The Cube sculpture look like the Aperture Science Weighted Companion Cube from the video game Portal.
+
+Caltech pranks have been documented in three Legends of Caltech books, the most recent of which was edited by alumni Autumn Looijen '99 and Mason Porter '98 and published in May 2007.
+
+Rivalry with MIT 
+
+In 2005, a group of Caltech students pulled a string of pranks during MIT's Campus Preview Weekend for admitted students. These include covering up the word Massachusetts in the "Massachusetts Institute of Technology" engraving on the main building façade with a banner so that it read "That Other Institute of Technology". A group of MIT hackers responded by altering the banner so that the inscription read "The Only Institute of Technology." Caltech students also passed out T-shirts to MIT's incoming freshman class that had MIT written on the front and "...because not everyone can go to Caltech" along with an image of a palm tree on the back.
+
+MIT retaliated in April 2006, when students posing as the Howe & Ser (Howitzer) Moving Company stole the 130-year-old, 1.7-ton Fleming House cannon and moved it over 3,000 miles to their campus in Cambridge, Massachusetts for their 2006 Campus Preview Weekend, repeating a similar prank performed by nearby Harvey Mudd College in 1986. Thirty members of Fleming House traveled to MIT and reclaimed their cannon on April 10, 2006.
+
+On April 13, 2007 (Friday the 13th), a group of students from The California Tech, Caltech's campus newspaper, arrived and distributed fake copies of The Tech, MIT's campus newspaper, while prospective students were visiting for their Campus Preview Weekend. Articles included "MIT Invents the Interweb", "Architects Deem Campus 'Unfortunate, and "Infinite Corridor Not Actually Infinite".
+
+In December 2009, some Caltech students declared that MIT had been sold and had become the Caltech East campus. A "sold" banner was hung on front of the MIT dome building and a "Welcome to Caltech East: School of the Humanities" banner over the Massachusetts Avenue Entrance. Newspapers and T-shirts were distributed, and door labels and fliers in the infinite corridor were put up in accordance with the "curriculum change."
+
+In September 2010, MIT students attempted to put a TARDIS, the time machine from the BBC's Doctor Who, onto a roof. Caught in mid-act, the prank was aborted. In January 2011, Caltech students in conjunction with MIT students helped put the TARDIS on top of Baxter. Caltech students then moved the TARDIS to UC Berkeley and Stanford.
+
+In April 2014, during MIT's Campus Preview Weekend, a group of Caltech students handed out mugs emblazoned with the MIT logo on the front and the words "The Institute of Technology" on the back. When heated, the mugs turn orange, display a palm tree, and read "Caltech The Hotter Institute of Technology." Identical mugs continue to be sold at the Caltech campus store.
+
+Honor code 
+Life in the Caltech community is governed by the honor code, which simply states: "No member of the Caltech community shall take unfair advantage of any other member of the Caltech community." This is enforced by a Board of Control, which consists of undergraduate students, and by a similar body at the graduate level, called the Graduate Honor Council.
+
+The honor code aims at promoting an atmosphere of respect and trust that allows Caltech students to enjoy privileges that make for a more relaxed atmosphere. For example, the honor code allows professors to make the majority of exams as take-home, allowing students to take them on their own schedule and in their preferred environment.
+
+Through the late 1990s, the only exception to the honor code, implemented earlier in the decade in response to changes in federal regulations, concerned the sexual harassment policy. Today, there are myriad exceptions to the honor code in the form of new Institute policies such as the fire policy and alcohol policy. Although both policies are presented in the Honor System Handbook given to new members of the Caltech community, some undergraduates regard them as a slight against the honor code and the implicit trust and respect it represents within the community. In recent years, the Student Affairs Office has also taken up pursuing investigations independently of the Board of Control and Conduct Review Committee, an implicit violation of both the honor code and written disciplinary policy that has contributed to further erosion of trust between some parts of the undergraduate community and the administration.
+
+Notable people 
+
+As of October 2022, Caltech has 46 Nobel laureates to its name awarded to 30 alumni (26 graduates and 4 postdocs), including 5 Caltech professors who are also alumni (Carl D. Anderson, Linus Pauling, William A. Fowler, Edward B. Lewis, and Kip Thorne), and 16 non-alumni professors (14 at the time of the award, not including David Baltimore and Renato Dulbecco). The total number of Nobel Prizes is 47 because Pauling received prizes in both Chemistry and Peace. Eight faculty and alumni have received a Crafoord Prize from the Royal Swedish Academy of Sciences, while 58 have been awarded the U.S. National Medal of Science, and 11 have received the National Medal of Technology. One alumnus, Stanislav Smirnov, won the Fields Medal in 2010. Other distinguished researchers have been affiliated with Caltech as postdoctoral scholars (for example, Barbara McClintock, James D. Watson, Sheldon Glashow and John Gurdon) or visiting professors (for example, Albert Einstein, Stephen Hawking and Edward Witten).
+
+Students 
+
+Caltech enrolled 987 undergraduate students and 1,410 graduate students for the 2021–2022 school year. Women made up 45% of the undergraduate and 33% of the graduate student body. The racial demographics of the school substantially differ from those of the nation as a whole.
+
+The four-year graduation rate is 79% and the six-year rate is 92%, which is low compared to most leading U.S. universities, but substantially higher than it was in the 1960s and 1970s. Students majoring in STEM fields traditionally have graduation rates below 70%.
+
+Alumni 
+There are 22,930 total living alumni in the U.S. and around the world. As of October 2022, 30 alumni and 16 non-alumni faculty have won the Nobel Prize. The Turing Award, the "Nobel Prize of Computer Science", has been awarded to six alumni, and one has won the Fields Medal.
+
+Many alumni have participated in scientific research. Some have concentrated their studies on the very small universe of atoms and molecules. Nobel laureate Carl D. Anderson (BS 1927, PhD 1930) proved the existence of positrons and muons, Nobel laureate Edwin McMillan (BS 1928, MS 1929) synthesized the first transuranium element, Nobel laureate Leo James Rainwater (BS 1939) investigated the non-spherical shapes of atomic nuclei, and Nobel laureate Douglas D. Osheroff (BS 1967) studied the superfluid nature of helium-3. Donald Knuth (PhD 1963), the "father" of the analysis of algorithms, wrote The Art of Computer Programming and created the TeX computer typesetting system, which is commonly used in the scientific community. Bruce Reznick (BS 1973) is a mathematician noted for his contributions to number theory and the combinatorial-algebraic-analytic investigations of polynomials. Narendra Karmarkar (MS 1979) is known for the interior point method, a polynomial algorithm for linear programming known as Karmarkar's algorithm.
+
+Other alumni have turned their gaze to the universe. C. Gordon Fullerton (BS 1957, MS 1958) piloted the third Space Shuttle mission. Astronaut (and later, United States Senator) Harrison Schmitt (BS 1957) was the only geologist to have walked on the surface of the Moon. Astronomer Eugene Merle Shoemaker (BS 1947, MS 1948) co-discovered Comet Shoemaker-Levy 9 (a comet which crashed into the planet Jupiter) and was the first person buried on the Moon (by having his ashes crashed into the Moon). Astronomer George O. Abell (BS 1951, MS 1952, PhD 1957) while a grad student at Caltech participated in the National Geographic Society-Palomar Sky Survey. This ultimately resulted in the publication of the Abell Catalogue of Clusters of Galaxies, the definitive work in the field.
+
+Undergraduate alumni founded, or co-founded, companies such as LCD manufacturer Varitronix, Hotmail, Compaq, MathWorks (which created Matlab), and database provider Imply, while graduate students founded, or co-founded, companies such as Intel, TRW, and the non-profit educational organization, the Exploratorium.
+
+Arnold Beckman (PhD 1928) invented the pH meter and commercialized it with the founding of Beckman Instruments. His success with that company enabled him to provide seed funding for William Shockley (BS 1932), who had co-invented semiconductor transistors and wanted to commercialize them. Shockley became the founding Director of the Shockley Semiconductor Laboratory division of Beckman Instruments. Shockley had previously worked at Bell Labs, whose first president was another alumnus, Frank Jewett (BS 1898). Because his aging mother lived in Palo Alto, California, Shockley established his laboratory near her in Mountain View, California. Shockley was a co-recipient of the Nobel Prize in physics in 1956, but his aggressive management style and odd personality at the Shockley Lab became unbearable. In late 1957, eight of his researchers resigned and with support from Sherman Fairchild formed Fairchild Semiconductor. Among the "traitorous eight" was Gordon E. Moore (PhD 1954), who later left Fairchild to co-found Intel. Other offspring companies of Fairchild Semiconductor include National Semiconductor and Advanced Micro Devices, which in turn spawned more technology companies in the area. Shockley's decision to use silicon instead of germanium as the semiconductor material, coupled with the abundance of silicon semiconductor related companies in the area, gave rise to the term "Silicon Valley" to describe that geographic region surrounding Palo Alto.
+
+Caltech alumni also held public offices, with Mustafa A.G. Abushagur (PhD 1984) the Deputy Prime Minister of Libya and Prime Minister-Elect of Libya, James Fletcher (PhD 1948) the 4th and 7th Administrator of NASA, Steven Koonin (PhD 1972) the Undersecretary of Energy for Science, and Regina Dugan (PhD 1993) the 19th director of DARPA. The 20th director for DARPA, Arati Prabhakar, is also a Caltech alumna (PhD 1984) as well as Charles Elachi (Phd 1971), former director of the Jet Propulsion Lab.  Arvind Virmani is a former Chief Economic Adviser to the Government of India. In 2013, President Obama announced the nomination of France Cordova (PhD 1979) as the director of the National Science Foundation and Ellen Williams (PhD 1982) as the director for ARPA-E.
+
+Faculty and staff 
+
+Richard Feynman was among the most well-known physicists associated with Caltech, having published the Feynman Lectures on Physics, an undergraduate physics text, and popular science texts such as Six Easy Pieces for the general audience. The promotion of physics made him a public figure of science, although his Nobel-winning work in quantum electrodynamics was already very established in the scientific community. Murray Gell-Mann, a Nobel-winning physicist, introduced a classification of hadrons and went on to postulate the existence of quarks, which is currently accepted as part of the Standard Model. Long-time Caltech President Robert Andrews Millikan was the first to calculate the charge of the electron with his well-known oil-drop experiment, while Richard Chace Tolman is remembered for his contributions to cosmology and statistical mechanics. 2004 Nobel Prize in Physics winner H. David Politzer is a current professor at Caltech, as is astrophysicist and author Kip Thorne and eminent mathematician Barry Simon. Linus Pauling pioneered quantum chemistry and molecular biology, and went on to discover the nature of the chemical bond in 1939. Seismologist Charles Richter, also an alumnus, developed the magnitude scale that bears his name, the Richter magnitude scale for measuring the power of earthquakes. One of the founders of the geochemistry department, Clair Patterson was the first to accurately determine the age of the Earth via lead:uranium ratio in meteorites. In engineering, Theodore von Kármán made many key advances in aerodynamics, notably his work on supersonic and hypersonic airflow characterization. A repeating pattern of swirling vortices is named after him, the von Kármán vortex street. Participants in von Kármán's GALCIT project included Frank Malina, who helped develop the WAC Corporal, which was the first U.S. rocket to reach the edge of space, Jack Parsons, a pioneer in the development of liquid and solid rocket fuels who designed the first castable composite-based rocket motor, and Qian Xuesen, who was dubbed the "Father of Chinese Rocketry". More recently, Michael Brown, a professor of planetary astronomy, discovered many trans-Neptunian objects, most notably the dwarf planet Eris, which prompted the International Astronomical Union to redefine the term "planet".
+
+David Baltimore, the Robert A. Millikan Professor of Biology, and Alice Huang, Senior Faculty Associate in Biology, served as the presidents of AAAS from 2007 to 2008 and 2010 to 2011, respectively.
+
+33% of the faculty are members of the National Academy of Sciences or Engineering and/or fellows of the American Academy of Arts and Sciences. This is the highest percentage of any faculty in the country with the exception of the graduate institution Rockefeller University.
+
+The average salary for assistant professors at Caltech is $111,300, associate professors $121,300, and full professors $172,800. Caltech faculty are active in applied physics, astronomy and astrophysics, biology, biochemistry, biological engineering, chemical engineering, computer science, geology, mechanical engineering, and physics.
+
+Presidents 
+James Augustin Brown Scherer (1908–1920) (president of Throop College of Technology before the name change)
+Robert A. Millikan (1921–1945), experimental physicist, Nobel laureate in physics for 1923 (his official title was "Chairman of the Executive Council")
+Lee A. DuBridge (1946–1969), experimental physicist (first to officially hold the title of President)
+Harold Brown (1969–1977), physicist and public servant (left Caltech to serve as United States Secretary of Defense in the administration of Jimmy Carter)
+Robert F. Christy (1977–1978), astrophysicist (acting president)
+Marvin L. Goldberger (1978–1987), theoretical physicist (left to serve as Director of Institute for Advanced Study)
+Thomas E. Everhart (1987–1997), experimental physicist
+David Baltimore (1997–2006), molecular biologist, Nobel laureate in Physiology or Medicine for 1975
+Jean-Lou Chameau (2006–2013), civil engineer and educational administrator (left to serve as president of King Abdullah University of Science and Technology)
+Thomas F. Rosenbaum (2014–), condensed matter physicist and administrator
+
+Caltech startups 
+Over the years Caltech has actively promoted the commercialization of technologies developed within its walls. Through its Office of Technology Transfer & Corporate Partnerships, scientific breakthroughs have led to the transfer of numerous technologies in a wide variety of scientific-related fields such as photovoltaic, radio-frequency identification (RFID), semiconductors, hyperspectral imaging, electronic devices, protein design, solid state amplifiers and many more. Companies such as Quora, Contour Energy Systems, Impinj, Fulcrum Microsystems, Nanosys, Inc., Photon etc., Xencor, and Wavestream Wireless have emerged from Caltech.
+
+In media and popular culture 
+
+Caltech has appeared in many works of popular culture, both as itself and in disguised form. On television, it played a prominent role and was the workplace of all four male lead characters and one female lead character in the sitcom The Big Bang Theory. Caltech is also the inspiration, and frequent film location, for the California Institute of Science in Numb3rs. On film, the Pacific Tech of The War of the Worlds and Real Genius is based on Caltech.
+
+In nonfiction, two 2007 documentaries examine aspects of Caltech: Curious, its researchers, and Quantum Hoops, its men's basketball team.
+
+Caltech is also prominently featured in many comics and television series by Marvel Entertainment. In Marvel Comics, the university serves as the alma mater of Hulk, Mister Fantastic, Bill Foster (Black Goliath), and Madman. In the Marvel Cinematic Universe, Bruno Carrelli (Kamala Khan's best friend and love interest) attends Caltech in the miniseries Ms. Marvel.
+
+Given its Los Angeles-area location, the grounds of the Institute are often host to short scenes in movies and television. The Athenaeum dining club appears in the Beverly Hills Cop series, The X-Files, True Romance, and The West Wing.
+
+See also 
+
+ Engineering education
+ US-China University Presidents Roundtable
+
+Notes
+
+References
+
+External links 
+
+ 
+ Official athletics website
+
+ 
+1891 establishments in California
+Buildings and structures in Pasadena, California
+Education in Pasadena, California
+Educational institutions established in 1891
+Engineering universities and colleges in California
+Private universities and colleges in California
+San Gabriel Valley
+Schools accredited by the Western Association of Schools and Colleges
+Science and technology in Greater Los Angeles
+Technological universities in the United States
+Universities and colleges in Los Angeles County, California
+Need-blind educational institutions
+Carlo Osvaldo Goldoni (, also , ; 25 February 1707 – 6 February 1793) was an Italian playwright and librettist from the Republic of Venice. His works include some of Italy's most famous and best-loved plays. Audiences have admired the plays of Goldoni for their ingenious mix of wit and honesty. His plays offered his contemporaries images of themselves, often dramatizing the lives, values, and conflicts of the emerging middle classes. Though he wrote in French and Italian, his plays make rich use of the Venetian language, regional vernacular, and colloquialisms. Goldoni also wrote under the pen name and title Polisseno Fegeio, Pastor Arcade, which he claimed in his memoirs the "Arcadians of Rome" bestowed on him.
+
+Biography
+
+Memoirs 
+There is an abundance of autobiographical information on Goldoni, most of which comes from the introductions to his plays and from his Memoirs. However, these memoirs are known to contain many errors of fact, especially about his earlier years.
+
+In these memoirs, he paints himself as a born comedian, careless, light-hearted and with a happy temperament, proof against all strokes of fate, yet thoroughly respectable and honorable.
+
+Early life and studies 
+
+Goldoni was born in Venice in 1707, the son of Margherita Salvioni (or Saioni) and Giulio Goldoni. In his memoirs, Goldoni describes his father as a physician, and claims that he was introduced to theatre by his grandfather Carlo Alessandro Goldoni. In reality, it seems that Giulio was an apothecary; as for the grandfather, he had died four years before Carlo's birth. In any case, Goldoni was deeply interested in theatre from his earliest years, and all attempts to direct his activity into other channels were of no avail; his toys were puppets, and his books, plays.
+
+His father placed him under the care of the philosopher Caldini at Rimini but the youth soon ran away with a company of strolling players and returned to Venice. In 1723 his father matriculated him into the stern Collegio Ghislieri in Pavia, which imposed the tonsure and monastic habits on its students. However, he relates in his Memoirs that a considerable part of his time was spent in reading Greek and Latin comedies. He had already begun writing at this time and, in his third year, he composed a libellous poem (Il colosso) in which he ridiculed the daughters of certain Pavian families. As a result of that incident (and/or of a visit paid with some schoolmates to a local brothel) he was expelled from the school and had to leave the city (1725). He studied law at Udine, and eventually took his degree at University of Modena. He was employed as a law clerk at Chioggia and Feltre, after which he returned to his native city and began practicing.
+
+Educated as a lawyer, and holding lucrative positions as secretary and counsellor, he seemed, indeed, at one time to have settled down to the practice of law, but following an unexpected summons to Venice, after an absence of several years, he changed his career, and thenceforth he devoted himself to writing plays and managing theatres. His father died in 1731. In 1732, to avoid an unwanted marriage, he left the town for Milan and then for Verona where the theatre manager Giuseppe Imer helped him on his way to becoming a comical poet as well as introducing him to his future wife, Nicoletta Conio. Goldoni returned with her to Venice, where he stayed until 1743.
+
+Theatrical career 
+
+Goldoni entered the Italian theatre scene with a tragedy, Amalasunta, produced in Milan. The play was a critical and financial failure.
+
+Submitting it to Count Prata, director of the opera, he was told that his piece "was composed with due regard for the rules of Aristotle and Horace, but not according to those laid down for the Italian drama." "In France", continued the count, "you can try to please the public, but here in Italy it is the actors and actresses whom you must consult, as well as the composer of the music and the stage decorators. Everything must be done according to a certain form which I will explain to you."
+
+Goldoni thanked his critic, went back to his inn and ordered a fire, into which he threw the manuscript of his Amalasunta.
+
+His next play, Belisario, written in 1734, was more successful, though of its success he afterward professed himself ashamed.
+
+During this period he also wrote librettos for opera seria and served for a time as literary director of the San Giovanni Grisostomo, Venice's most distinguished opera house.
+
+He wrote other tragedies for a time, but he was not long in discovering that his bent was for comedy. He had come to realize that the Italian stage needed reforming; adopting Molière as his model, he went to work in earnest and in 1738 produced his first real comedy, L'uomo di mondo ("The Man of the World"). During his many wanderings and adventures in Italy, he was constantly at work and when, at Livorno, he became acquainted with the manager Medebac, he determined to pursue the profession of playwriting in order to make a living. He was employed by Medebac to write plays for his theater in Venice. He worked for other managers and produced during his stay in that city some of his most characteristic works. He also wrote Momolo Cortesan in 1738. By 1743, he had perfected his hybrid style of playwriting (combining the model of Molière with the strengths of Commedia dell'arte and his own wit and sincerity). This style was typified in La Donna di garbo, the first Italian comedy of its kind.
+
+After 1748, Goldoni collaborated with the composer Baldassare Galuppi, making significant contributions to the new form of 'opera buffa'. Galuppi composed the score for more than twenty of Goldoni's librettos. As with his comedies, Goldoni's opera buffa integrate elements of the Commedia dell'arte with recognisable local and middle-class realities. His operatic works include two of the most successful musical comedies of the eighteenth century, Il filosofo di campagna (The Country Philosopher), set by Galuppi (1752) and La buona figliuola (The Good Girl), set by Niccolò Piccinni (1760).
+
+In 1753, following his return from Bologna, he defected to the Teatro San Luca of the Vendramin family, where he performed most of his plays to 1762.
+
+Move to France and death 
+
+In 1757, he engaged in a bitter dispute with playwright Carlo Gozzi, which left him utterly disgusted with the tastes of his countrymen; so much so that in 1761 he moved to Paris, where he received a position at court and was put in charge of the Théâtre-Italien. He spent the rest of his life in France, composing most of his plays in French and writing his memoirs in that language.
+
+Among the plays which he wrote in French, the most successful was Le bourru bienfaisant, dedicated to the Marie Adélaïde, a daughter of Louis XV and aunt to the dauphin, the future Louis XVI of France. It premiered on 4 February 1771, almost nine months after the dauphin's marriage to Marie Antoinette. Goldoni enjoyed considerable popularity in France; in 1769, when he retired to Versailles, the King gave him a pension. He lost this pension after the French Revolution. The Convention eventually voted to restore his pension the day after his death. It was restored to his widow, at the pleading of the poet André Chénier; "She is old", he urged, "she is seventy-six, and her husband has left her no heritage save his illustrious name, his virtues and his poverty."
+
+Goldoni's impact on Italian theatre 
+In his Memoirs Goldoni amply discusses the state of Italian comedy when he began writing. At that time, Italian comedy revolved around the conventionality of the Commedia dell'arte, or improvised comedy. Goldoni took to himself the task of superseding the comedy of masks and the comedy of intrigue by representations of actual life and manners through the characters and their behaviors. He  maintained that Italian life and manners were susceptible of artistic treatment such as had not been given them before.
+
+His works are a lasting monument to the changes that he initiated: a dramatic revolution that had been attempted but not achieved before. Goldoni's importance lay in providing good examples rather than precepts. Goldoni says that he took for his models the plays of Molière and that whenever a piece of his own succeeded he whispered to himself: "Good, but not yet Molière." Goldoni's plays are gentler and more optimistic in tone than Molière's.
+
+It was this very success that was the object of harsh critiques by Carlo Gozzi, who accused Goldoni of having deprived the Italian theatre of the charms of poetry and imagination. The great success of Gozzi's fairy dramas so irritated Goldoni that it led to his self-exile to France.
+
+Goldoni gave to his country a classical form, which, though it has since been cultivated, has yet to be cultivated by a master.
+
+Themes 
+Goldoni's plays that were written while he was still in Italy ignore religious and ecclesiastical subjects. This may be surprising, considering his staunch Catholic upbringing. No thoughts are expressed about death or repentance in his memoirs or in his comedies. After his move to France, his position became clearer, as his plays took on a clear anti-clerical tone and often satirized the hypocrisy of monks and of the Church.
+
+Goldoni was inspired by his love of humanity and the admiration he had for his fellow men. He wrote, and was obsessed with, the relationships that humans establish with one another, their cities and homes, the Humanist movement, and the study of philosophy. The moral and civil values that Goldoni promotes in his plays are those of rationality, civility, humanism, the importance of the rising middle-class, a progressive stance to state affairs, honor and honesty. Goldoni had a dislike for arrogance, intolerance and the abuse of power.
+
+Goldoni's main characters are no abstract examples of human virtue, nor monstrous examples of human vice. They occupy the middle ground of human temperament. Goldoni maintains an acute sensibility for the differences in social classes between his characters as well as environmental and generational changes. Goldoni pokes fun at the arrogant nobility and the pauper who lacks dignity.
+
+Venetian and Tuscan 
+As in other theatrical works of the time and place, the characters in Goldoni's Italian comedies spoke originally either the literary Tuscan variety (which became modern Italian) or the Venetian dialect, depending on their station in life. However, in some printed editions of his plays he often turned the Venetian texts into Tuscan, too.
+
+Goldoni in popular culture 
+
+One of his best known works is the comic play Servant of Two Masters, which has been translated and adapted internationally numerous times. In 1966 it was adapted into an opera buffa by the American composer Vittorio Giannini. In 2011, Richard Bean adapted the play for the National Theatre of Great Britain as One Man, Two Guvnors. Its popularity led to a transfer to the West End and in 2012 to Broadway.
+
+The film Carlo Goldoni – Venice, Grand Theatre of the World, directed by Alessandro Bettero, was released in 2007 and is available in English, Italian, French, and Japanese.
+
+Selected works 
+
+The following is a small sampling of Goldoni's enormous output.
+
+Tragedies 
+ Rosmonda (1734)
+ Griselda (1734)
+
+Tragicomedies 
+Belisario (1734)
+Don Giovanni Tenorio o sia Il dissoluto, "The Dissolute" (1735)
+Rinaldo di Montalbano (1736)
+
+Comedies 
+Il servitore di due padroni, (1745) "The Servant of Two Masters" (now often retitled Arlecchino servitore di due padroni "Harlequin Servant of two Masters")
+I due gemelli veneziani, "The Two Venetian Twins" (1747)
+La vedova scaltra, "The Shrewd Widow" (1748)
+La putta onorata, "The Honorable Maid" (1749)
+Il cavaliere e la dama, "The Gentleman and the Lady" (1749)
+La famiglia dell'antiquario, "The Antiquarian's Family" (1750)
+Il teatro comico, "The Comical Theatre" (1750–1751)
+Il bugiardo, "The Liar" (1750–1751)
+Il vero amico, "The True Friend" (1750) translated by Anna Cuffaro
+I pettegolezzi delle donne, "Women's Gossip" (1750–1751)
+La locandiera, "The Mistress of the Inn" (1751)
+Il feudatario "The Feudal Lord" (1752)
+Gl'innamorati, "The Lovers" (1759)
+I rusteghi, "The Boors" (1760)
+Le baruffe chiozzotte, "The Chioggia Scuffles" (1762)
+Gli amori di Zelinda e Lindoro, "The Love of Zelinda and Lindoro" (1764)
+
+Opera seria libretti 
+ Amalasunta (1732)
+ Gustavo primo, re di Svezia (c. 1738)
+ Oronte, re de' Sciti (1740)
+ Statira (c. 1740)
+
+Opera buffa libretti
+ La contessina (The Young Countess) by Maccari (1743)
+ L'Arcadia in Brenta (The Arcadia in Brenta) by Galuppi (1749)
+ Il mondo della luna (The World on the Moon), set to music by Galuppi (1750), Haydn (1777), Paisiello (1782) and other composers.
+ Il filosofo di campagna (The Country Philosopher) by Galuppi (1754)
+ Il mercato di Malmantile (The Malmantile Market) by Fischietti (1757)
+ Buovo d'Antona, set to music by Tommaso Traetta (1758, incorrectly recorded as 1750 in Zatta's edition)
+ La buona figliuola (The Good Girl) by Niccolò Piccinni (1760)
+ Lo speziale (The Apothecary) by Joseph Haydn (1768)
+ La finta semplice (The Fake Innocent) by Wolfgang Amadeus Mozart (1769)
+ Le pescatrici (The Fisherwomen) by Haydn (1770), Florian Leopold Gassmann (1771)
+
+Intermezzo libretti 
+ Le donne vendicate, "The Revenge of the Women" (1751)
+
+Cantatas and serenades 
+ La ninfa saggia, "The Wise Nymph" (17??)
+ Gli amanti felici, "The Happy Lovers" (17??)
+
+Poetry 
+ Il colosso, a satire against Pavia girls which led to Goldoni being expelled from Collegio Ghislieri (1725)
+ Il quaresimale in epilogo (1725–1726)
+
+Books 
+ Nuovo teatro comico, "New Comic Theater", plays. Pitteri, Venice (1757)
+ Mémoires, "Memoirs". Paris (1787)
+ Goldoni's collected works. Zalta, Venice (1788–1795)
+
+Selected translations of Goldoni's works
+ Il vero amico, "The True Friend" translated by Anna Cuffaro. Publisher: Sparkling Books.
+ Archifanfaro translated by W. H. Auden with an introduction by Michael Andre in Unmuzzled OX.
+
+Notes
+
+References
+
+Sources
+ Bates, Alfred, editor (1903). "Goldoni", vol. 5, , in The Drama: Its History, Literature and Influence on Civilization. London/New York: Smart and Stanley.
+ 
+ Richards, Kenneth (1995). "Goldoni, Carlo", pp. 432–434, in The Cambridge Guide to Theatre, second edition, edited by Martin Banham. Cambridge University Press. .
+
+External links 
+
+ www.carlogoldoni.net – the English website dedicated to Goldoni
+ 
+ 
+ 
+ 
+ www.sparklingbooks.com for bilingual edition English/Italian of The True Friend/Il vero amico
+ Webpage devoted to Carlo Goldoni (lletrA (UOC), Catalan Literature Online) 
+ Detailed biography, prepared for the 200th anniversary of his death (1993) 
+ Gli Innamorati 
+ La Locandiera 
+ La Avventura Della Villeggiatura 
+ Works by Goldoni at Progetto Manuzio
+ Works by Goldoni (text, concordances and frequency list)
+ Venice Carnival 2007, Tricentenary of Carlo Goldoni
+ A riotous delight of commedia dell'arte
+ Carlo Goldoni – biography in the Catholic Encyclopedia
+ 
+ 
+
+ 
+1707 births
+1793 deaths
+Commedia dell'arte
+18th-century Italian dramatists and playwrights
+18th-century Venetian writers
+Italian opera librettists
+Italian male dramatists and playwrights
+University of Modena alumni
+Italian memoirists
+Members of the Academy of Arcadians
+In probability theory and statistics, the cumulative distribution function (CDF) of a real-valued random variable , or just distribution function of , evaluated at , is the probability that  will take a value less than or equal to .
+
+Every probability distribution supported on the real numbers, discrete or "mixed" as well as continuous, is uniquely identified by a right-continuous monotone increasing function (a càdlàg function)  satisfying  and .
+
+In the case of a scalar continuous distribution, it gives the area under the probability density function from minus infinity to . Cumulative distribution functions are also used to specify the distribution of multivariate random variables.
+
+Definition
+The cumulative distribution function of a real-valued random variable  is the function given by
+
+where the right-hand side represents the probability that the random variable  takes on a value less than or equal to . 
+
+The probability that  lies in the semi-closed interval , where , is therefore
+
+In the definition above, the "less than or equal to" sign, "≤", is a convention, not a universally used one (e.g. Hungarian literature uses "<"), but the distinction is important for discrete distributions. The proper use of tables of the binomial and Poisson distributions depends upon this convention. Moreover, important formulas like Paul Lévy's inversion formula for the characteristic function also rely on the "less than or equal" formulation.
+
+If treating several random variables  etc. the corresponding letters are used as subscripts while, if treating only one, the subscript is usually omitted. It is conventional to use a capital  for a cumulative distribution function, in contrast to the lower-case  used for probability density functions and probability mass functions. This applies when discussing general distributions: some specific distributions have their own conventional notation, for example the normal distribution uses  and  instead of  and , respectively.
+
+The probability density function of a continuous random variable can be determined from the cumulative distribution function by differentiating using the Fundamental Theorem of Calculus; i.e. given ,
+
+as long as the derivative exists.
+
+The CDF of a continuous random variable  can be expressed as the integral of its probability density function  as follows:
+
+In the case of a random variable  which has distribution having a discrete component at a value ,
+
+If  is continuous at , this equals zero and there is no discrete component at .
+
+Properties 
+
+Every cumulative distribution function  is non-decreasing and right-continuous, which makes it a càdlàg function. Furthermore,
+
+Every function with these four properties is a CDF, i.e., for every such function, a random variable can be defined such that the function is the cumulative distribution function of that random variable.
+
+If  is a purely discrete random variable, then it attains values  with probability , and the CDF of  will be discontinuous at the points :
+
+If the CDF  of a real valued random variable  is continuous, then  is a continuous random variable; if furthermore  is absolutely continuous, then there exists a Lebesgue-integrable function  such that
+
+for all real numbers  and . The function  is equal to the derivative of  almost everywhere, and it is called the probability density function of the distribution of .
+
+If  has finite L1-norm, that is, the expectation of  is finite, then the expectation is given by the Riemann–Stieltjes integral and for any ,
+
+as shown in the diagram.
+
+In particular, we have
+
+Examples 
+As an example, suppose  is uniformly distributed on the unit interval .
+
+Then the CDF of  is given by
+
+Suppose instead that  takes only the discrete values 0 and 1, with equal probability.
+
+Then the CDF of  is given by
+
+Suppose  is exponential distributed. Then the CDF of  is given by
+
+Here λ > 0 is the parameter of the distribution, often called the rate parameter.
+
+Suppose  is normal distributed. Then the CDF of  is given by
+
+Here the parameter  is the mean or expectation of the distribution; and  is its standard deviation.
+
+A table of the CDF of the standard normal distribution is often used in statistical applications, where it is named the standard normal table, the unit normal table, or the Z table.
+
+Suppose  is binomial distributed. Then the CDF of  is given by
+
+Here  is the probability of success and the function denotes the discrete probability distribution of the number of successes in a sequence of  independent experiments, and  is the "floor" under , i.e. the greatest integer less than or equal to .
+
+Derived functions
+
+Complementary cumulative distribution function (tail distribution)
+
+Sometimes, it is useful to study the opposite question and ask how often the random variable is above a particular level. This is called the  () or simply the  or , and is defined as
+
+This has applications in statistical hypothesis testing, for example, because the one-sided p-value is the probability of observing a test statistic at least as extreme as the one observed. Thus, provided that the test statistic, T, has a continuous distribution, the one-sided p-value is simply given by the ccdf: for an observed value  of the test statistic
+
+In survival analysis,  is called the survival function and denoted , while the term reliability function is common in engineering.
+
+Properties
+ For a non-negative continuous random variable having an expectation, Markov's inequality states that 
+ As , and in fact  provided that  is finite.  Proof:  Assuming  has a density function , for any   Then, on recognizing  and rearranging terms,  as claimed.
+ For a random variable having an expectation,  and for a non-negative random variable the second term is 0.  If the random variable can only take non-negative integer values, this is equivalent to
+
+Folded cumulative distribution
+
+While the plot of a cumulative distribution  often has an S-like shape, an alternative illustration is the folded cumulative distribution or mountain plot, which folds the top half of the graph over, that is
+
+where  denotes the indicator function and the second summand is the survivor function, thus using two scales, one for the upslope and another for the downslope. This form of illustration emphasises the median, dispersion (specifically, the mean absolute deviation from the median) and skewness of the distribution or of the empirical results.
+
+Inverse distribution function (quantile function)
+
+If the CDF F is strictly increasing and continuous then  is the unique real number  such that . This defines the inverse distribution function or quantile function.
+
+Some distributions do not have a unique inverse (for example if  for all , causing  to be constant). In this case, one may use the generalized inverse distribution function, which is defined as
+
+ Example 1: The median is .
+ Example 2: Put . Then we call  the 95th percentile.
+
+Some useful properties of the inverse cdf (which are also preserved in the definition of the generalized inverse distribution function) are:
+
+  is nondecreasing
+ 
+ 
+  if and only if 
+ If  has a  distribution then  is distributed as . This is used in random number generation using the inverse transform sampling-method.
+ If  is a collection of independent -distributed random variables defined on the same sample space, then there exist random variables  such that  is distributed as  and  with probability 1 for all .
+
+The inverse of the cdf can be used to translate results obtained for the uniform distribution to other distributions.
+
+Empirical distribution function 
+The empirical distribution function is an estimate of the cumulative distribution function that generated the points in the sample. It converges with probability 1 to that underlying distribution. A number of results exist to quantify the rate of convergence of the empirical distribution function to the underlying cumulative distribution function.
+
+Multivariate case
+
+Definition for two random variables
+When dealing simultaneously with more than one random variable the joint cumulative distribution function can also be defined. For example, for a pair of random variables , the joint CDF  is given by
+
+where the right-hand side represents the probability that the random variable  takes on a value less than or equal to  and that  takes on a value less than or equal to .
+
+Example of joint cumulative distribution function:
+
+For two continuous variables X and Y: 
+
+For two discrete random variables, it is beneficial to generate a table of probabilities and address the cumulative probability for each potential range of X and Y, and here is the example:
+
+given the joint probability mass function in tabular form, determine the joint cumulative distribution function.
+
+Solution: using the given table of probabilities for each potential range of X and Y, the joint cumulative distribution function may be constructed in tabular form:
+
+Definition for more than two random variables
+For  random variables , the joint CDF  is given by
+
+Interpreting the  random variables as a random vector  yields a shorter notation:
+
+Properties
+Every multivariate CDF is:
+ Monotonically non-decreasing for each of its variables,
+ Right-continuous in each of its variables,
+ 
+ 
+
+Not every function satisfying the above four properties is a multivariate CDF, unlike in the single dimension case. For example, let  for  or  or  and let  otherwise. It is easy to see that the above conditions are met, and yet  is not a CDF since if it was, then  as explained below.
+
+The probability that a point belongs to a hyperrectangle is analogous to the 1-dimensional case:
+
+Complex case
+
+Complex random variable
+The generalization of the cumulative distribution function from real to complex random variables is not obvious because expressions of the form  make no sense. However expressions of the form  make sense. Therefore, we define the cumulative distribution of a complex random variables via the joint distribution of their real and imaginary parts:
+
+Complex random vector
+Generalization of  yields
+
+as definition for the CDS of a complex random vector .
+
+Use in statistical analysis
+The concept of the cumulative distribution function makes an explicit appearance in statistical analysis in two (similar) ways. Cumulative frequency analysis is the analysis of the frequency of occurrence of values of a phenomenon less than a reference value. The empirical distribution function is a formal direct estimate of the cumulative distribution function for which simple statistical properties can be derived and which can form the basis of various statistical hypothesis tests. Such tests can assess whether there is evidence against a sample of data having arisen from a given distribution, or evidence against two samples of data having arisen from the same (unknown) population distribution.
+
+Kolmogorov–Smirnov and Kuiper's tests
+The Kolmogorov–Smirnov test is based on cumulative distribution functions and can be used to test to see whether two empirical distributions are different or whether an empirical distribution is different from an ideal distribution. The closely related Kuiper's test is useful if the domain of the distribution is cyclic as in day of the week. For instance Kuiper's test might be used to see if the number of tornadoes varies during the year or if sales of a product vary by day of the week or day of the month.
+
+See also
+ Descriptive statistics
+ Distribution fitting
+ Ogive (statistics)
+ Modified half-normal distribution with the pdf on  is given as , where  denotes the Fox–Wright Psi function.
+
+References
+
+External links 
+ 
+
+Functions related to probability distributions
+In statistics, a central tendency (or measure of central tendency) is a central or typical value for a probability distribution.
+
+Colloquially, measures of central tendency are often called averages. The term central tendency dates from the late 1920s.
+
+The most common measures of central tendency are the arithmetic mean, the median, and the mode.  A middle tendency can be calculated for either a finite set of values or for a theoretical distribution, such as the normal distribution. Occasionally authors use central tendency to denote "the tendency of quantitative data to cluster around some central value."
+
+The central tendency of a distribution is typically contrasted with its dispersion or variability; dispersion and central tendency are the often characterized properties of distributions. Analysis may judge whether data has a strong or a weak central tendency based on its dispersion.
+
+Measures
+
+The following may be applied to one-dimensional data. Depending on the circumstances, it may be appropriate to transform the data before calculating a central tendency. Examples are squaring the values or taking logarithms. Whether a transformation is appropriate and what it should be, depend heavily on the data being analyzed.
+
+ Arithmetic mean or simply, mean the sum of all measurements divided by the number of observations in the data set.
+ Median the middle value that separates the higher half from the lower half of the data set. The median and the mode are the only measures of central tendency that can be used for ordinal data, in which values are ranked relative to each other but are not measured absolutely.
+ Mode the most frequent value in the data set. This is the only central tendency measure that can be used with nominal data, which have purely qualitative category assignments.
+ Generalized mean A generalization of the Pythagorean means, specified by an exponent.
+ Geometric mean the nth root of the product of the data values, where there are n of these. This measure is valid only for data that are measured absolutely on a strictly positive scale.
+ Harmonic mean the reciprocal of the arithmetic mean of the reciprocals of the data values. This measure too is valid only for data that are measured absolutely on a strictly positive scale.
+ Weighted arithmetic mean an arithmetic mean that incorporates weighting to certain data elements.
+ Truncated mean or trimmed mean the arithmetic mean of data values after a certain number or proportion of the highest and lowest data values have been discarded.
+ Interquartile mean a truncated mean based on data within the interquartile range.
+ Midrange the arithmetic mean of the maximum and minimum values of a data set.
+ Midhinge the arithmetic mean of the first and third quartiles.
+ Quasi-arithmetic mean A generalization of the generalized mean, specified by a continuous injective function.
+ Trimean the weighted arithmetic mean of the median and two quartiles.
+ Winsorized mean an arithmetic mean in which extreme values are replaced by values closer to the median.
+
+Any of the above may be applied to each dimension of multi-dimensional data, but the results may not be invariant to rotations of the multi-dimensional space.
+
+ Geometric median the point minimizing the sum of distances to a set of sample points. This is the same as the median when applied to one-dimensional data, but it is not the same as taking the median of each dimension independently.  It is not invariant to different rescaling of the different dimensions.
+ Quadratic mean (often known as the root mean square) useful in engineering, but not often used in statistics. This is because it is not a good indicator of the center of the distribution when the distribution includes negative values.
+ Simplicial depth the probability that a randomly chosen simplex with vertices from the given distribution will contain the given center
+ Tukey median a point with the property that every halfspace containing it also contains many sample points
+
+Solutions to variational problems
+Several measures of central tendency can be characterized as solving a variational problem, in the sense of the calculus of variations, namely minimizing variation from the center. That is, given a measure of statistical dispersion, one asks for a measure of central tendency that minimizes variation: such that variation from the center is minimal among all choices of center. In a quip, "dispersion precedes location". These measures are initially defined in one dimension, but can be generalized to multiple dimensions. This center may or may not be unique. In the sense of  spaces, the correspondence is:
+
+The associated functions are called -norms: respectively 0-"norm", 1-norm, 2-norm, and ∞-norm. The function corresponding to the 0 space is not a norm, and is thus often referred to in quotes: 0-"norm".
+
+In equations, for a given (finite) data set , thought of as a vector , the dispersion about a point  is the "distance" from  to the constant vector  in the -norm (normalized by the number of points ):
+
+For  and  these functions are defined by taking limits, respectively as  and . For  the limiting values are  and  or , so the difference becomes simply equality, so the 0-norm counts the number of unequal points. For  the largest number dominates, and thus the ∞-norm is the maximum difference.
+
+Uniqueness
+The mean (L2 center) and midrange (L∞ center) are unique (when they exist), while the median (L1 center) and mode (L0 center) are not in general unique. This can be understood in terms of convexity of the associated functions (coercive functions).
+
+The 2-norm and ∞-norm are strictly convex, and thus (by convex optimization) the minimizer is unique (if it exists), and exists for bounded distributions. Thus standard deviation about the mean is lower than standard deviation about any other point, and the maximum deviation about the midrange is lower than the maximum deviation about any other point.
+
+The 1-norm is not strictly convex, whereas strict convexity is needed to ensure uniqueness of the minimizer. Correspondingly, the median (in this sense of minimizing) is not in general unique, and in fact any point between the two central points of a discrete distribution minimizes average absolute deviation.
+
+The 0-"norm" is not convex (hence not a norm). Correspondingly, the mode is not unique – for example, in a uniform distribution any point is the mode.
+
+Clustering
+Instead of a single central point, one can ask for multiple points such that the variation from these points is minimized. This leads to cluster analysis, where each point in the data set is clustered with the nearest "center". Most commonly, using the 2-norm generalizes the mean to k-means clustering, while using the 1-norm generalizes the (geometric) median to k-medians clustering. Using the 0-norm simply generalizes the mode (most common value) to using the k most common values as centers.
+
+Unlike the single-center statistics, this multi-center clustering cannot in general be computed in a closed-form expression, and instead must be computed or approximated by an iterative method; one general approach is expectation–maximization algorithms.
+
+Information geometry
+The notion of a "center" as minimizing variation can be generalized in information geometry as a distribution that minimizes divergence (a generalized distance) from a data set. The most common case is maximum likelihood estimation, where the maximum likelihood estimate (MLE) maximizes likelihood (minimizes expected surprisal), which can be interpreted geometrically by using entropy to measure variation: the MLE minimizes cross-entropy (equivalently, relative entropy, Kullback–Leibler divergence).
+
+A simple example of this is for the center of nominal data: instead of using the mode (the only single-valued "center"), one often uses the empirical measure (the frequency distribution divided by the sample size) as a "center". For example, given binary data, say heads or tails, if a data set consists of 2 heads and 1 tails, then the mode is "heads", but the empirical measure is 2/3 heads, 1/3 tails, which minimizes the cross-entropy (total surprisal) from the data set. This perspective is also used in regression analysis, where least squares finds the solution that minimizes the distances from it, and analogously in logistic regression, a maximum likelihood estimate minimizes the surprisal (information distance).
+
+Relationships between the mean, median and mode
+
+For unimodal distributions the following bounds are known and are sharp:
+
+ 
+
+ 
+
+ 
+
+where μ is the mean, ν is the median, θ is the mode, and σ is the standard deviation.
+
+For every distribution,
+
+See also
+Central moment
+Expected value
+Location parameter
+Mean
+Population mean
+Sample mean
+
+Notes
+
+References
+
+Summary statistics
+Probability theory
+Celebrity is a condition of fame and broad public recognition of a person or group as a result of the attention given to them by mass media. An individual may attain a celebrity status from having great wealth, their participation in sports or the entertainment industry, their position as a political figure, or even from their connection to another celebrity. 'Celebrity' usually implies a favorable public image, as opposed to the neutrals 'famous' or 'notable', or the negatives 'infamous' and 'notorious'.
+
+History
+In his 2020 book Dead Famous: an unexpected history of celebrity, British historian Greg Jenner uses the definition:
+
+Although his book is subtitled "from Bronze Age to Silver Screen", and despite the fact that "Until very recently, sociologists argued that celebrity was invented just over 100 years ago, in the flickering glimmer of early Hollywood" and the suggestion that some medieval saints might qualify, Jenner asserts that the earliest celebrities lived in the early 1700s, his first example being Henry Sacheverell.
+
+Athletes in Ancient Greece were welcomed home as heroes, had songs and poems written in their honor, and received free food and gifts from those seeking celebrity endorsement. Ancient Rome similarly lauded actors and notorious gladiators, and Julius Caesar appeared on a coin in his own lifetime (a departure from the usual depiction of battles and divine lineage).
+
+In the early 12th century, Thomas Becket became famous following his murder. He was promoted by the Christian Church as a martyr and images of him and scenes from his life became widespread in just a few years. In a pattern often repeated, what started as an explosion of popularity (often referred to with the suffix 'mania') turned into long-lasting fame: pilgrimages to Canterbury Cathedral where he was killed became instantly fashionable and the fascination with his life and death have inspired plays and films.
+
+The cult of personality (particularly in the west) can be traced back to the Romantics in the 18th century, whose livelihood as artists and poets depended on the currency of their reputation. The establishment of cultural hot-spots became an important factor in the process of generating fame: for example, London and Paris in the 18th and 19th centuries. Newspapers started including gossip columns  and certain clubs and events became places to be seen in order to receive publicity. David Lodge called Charles Dickens the "first writer … to feel the intense pressure of being simultaneously an artist and an object of unrelenting public interest and adulation", and Juliet John backed up the claim for Dickens "to be called the first self-made global media star of the age of mass culture."
+
+Theatrical actors were often celebrities. Restaurants near theaters, where actors would congregate, began putting up caricatures or photographs of actors on celebrity walls in the late 19th century. The subject of widespread public and media interest, Lillie Langtry made her West End theatre debut in 1881 causing a sensation in London by becoming the first socialite to appear on stage. The following year she became the poster-girl for Pears Soap, becoming the first celebrity to endorse a commercial product. In 1895, poet and playwright Oscar Wilde became the subject of "one of the first celebrity trials".
+
+The movie industry spread around the globe in the first half of the 20th century and now, the familiar concept of the instantly recognizable faces of its superstars. Yet, celebrity was not always tied to actors in films, especially when cinema was starting as a medium. As Paul McDonald states in The Star System: Hollywood's Production of Popular Identities, "in the first decade of the twentieth century, American film production companies withheld the names of film performers, despite requests from audiences, fearing that public recognition would drive performers to demand higher salaries."  Public fascination went well beyond the on-screen exploits of movie stars and their private lives became headline news: for example, in Hollywood the marriages of Elizabeth Taylor and in Bollywood the affairs of Raj Kapoor in the 1950s. Like theatrical actors before them, movie actors were the subjects of celebrity walls in restaurants they frequented, near movie studios, most notably at Sardi's in Hollywood.
+
+The second half of the century saw television and popular music bring new forms of celebrity, such as the rock star and the pop group, epitomised by Elvis Presley and the Beatles, respectively. John Lennon's highly controversial 1966 quote: "We're more popular than Jesus now," which he later insisted was not a boast, and that he was not in any way comparing himself with Christ, gives an insight into both the adulation and notoriety that fame can bring. Unlike movies, television created celebrities who were not primarily actors; for example, presenters, talk show hosts, and newsreaders. However, most of these are only famous within the regions reached by their particular broadcaster, and only a few such as Oprah Winfrey, Jerry Springer, or David Frost could be said to have broken through into wider stardom. Television also gave exposure to sportspeople, notably Pelé after his emergence at the 1958 FIFA World Cup, with Barney Ronay in The Guardian stating, "What is certain is that Pelé invented this game, the idea of individual global sporting superstardom, and in a way that is unrepeatable now."
+
+In the '60s and early '70s, the book publishing industry began to persuade major celebrities to put their names on autobiographies and other titles in a genre called celebrity publishing. In most cases, the book was not written by the celebrity but by a ghostwriter, but the celebrity would then be available for a book tour and appearances on talk shows.
+
+Wealth
+
+Forbes Celebrity 100
+
+Forbes magazine releases an annual Forbes Celebrity 100 list of the highest-paid celebrities in the world. The total earnings for all top celebrity 100 earners totaled $4.5 billion in 2010 alone.
+
+For instance, Forbes ranked media mogul and talk show host, Oprah Winfrey as the top earner "Forbes magazine's annual ranking of the most powerful celebrities", with earnings of $290 million in the past year. Forbes cites that Lady Gaga reportedly earned over $90 million in 2010. In 2011, golfer Tiger Woods was one of highest-earning celebrity athletes, with an income of $74 million and is consistently ranked one of the highest-paid athletes in the world. In 2013, Madonna was ranked as the fifth most powerful and the highest-earning celebrity of the year with earnings of $125 million. She has consistently been among the most powerful and highest-earning celebrities in the world, occupying the third place in Forbes Celebrity 100 2009 with $110 million of earnings, and getting the tenth place in the 2011 edition of the list with annual earnings equal to $58 million. Beyoncé has also appeared in the top ten in 2008, 2009, 2010, 2013, 2017, and topped the list in 2014 with earnings of $115 million. Cristiano Ronaldo followed by Lionel Messi in 2020 became the first two athletes in a team sport to surpass $1 billion in earnings during their careers.
+
+Forbes also lists the top-earning dead celebrities, with singer Michael Jackson, fantasy author J. R. R. Tolkien and children's author Roald Dahl each topping the annual list with earnings of $500 million over the course of a year.
+
+Entrepreneurship and endorsements
+
+Celebrity endorsements have proven very successful around the world where, due to increasing consumerism, a person owns a  status symbol by purchasing a celebrity-endorsed product. Although it has become commonplace for celebrities to place their name with endorsements onto products just for quick money, some celebrities have gone beyond merely using their names and have put their entrepreneurial spirit to work by becoming entrepreneurs by attaching themselves in the business aspects of entertainment and building their own business brand beyond their traditional salaried activities. Along with investing their salaried wages into growing business endeavors, several celebrities have become innovative business leaders in their respective industries, gaining the admiration of their peers and contributing to the country's economy.
+
+Numerous celebrities have ventured into becoming business moguls and established themselves as entrepreneurs, idolizing many well known business leaders such as Bill Gates, Richard Branson and Warren Buffett. For instance, former basketball player Michael Jordan became an entrepreneur involved with many sports-related ventures including investing a minority stake in the Charlotte Bobcats, Paul Newman started his own salad dressing business after leaving behind a distinguished acting career, and rap musician Birdman started his own record label, clothing line, and an oil business while maintaining a career as a rap artist. In 2014, David Beckham became co-owner of new Major League Soccer team Inter Miami, which began playing in 2020. Former Brazil striker and World Cup winner Ronaldo became the majority owner of La Liga club Real Valladolid in 2018. Other celebrities such as Tyler Perry, George Lucas, and Steven Spielberg have become successful entrepreneurs through starting their own film production companies and running their own movie studios beyond their traditional activities of screenwriting, directing, animating, producing, and acting.
+
+Tabloid magazines and talk TV shows bestow a great deal of attention to celebrities. To stay in the public eye and build wealth in addition to their salaried labor, numerous celebrities have participating and branching into various business ventures and endorsements. Many celebrities have participated in many different endorsement opportunities that include: animation, publishing, fashion designing, cosmetics, consumer electronics, household items and appliances, cigarettes, soft drinks and alcoholic beverages, hair care, hairdressing, jewelry design, fast food, credit cards, video games, writing, and toys.
+
+In addition to various endorsements, some celebrities have been involved with some business and investment-related ventures also include:  and toddler related items, sports team ownership, fashion retailing, establishments such as restaurants, cafes, hotels, and casinos, movie theaters, advertising and event planning, management-related ventures such as sports management, financial services, model management, and talent management, record labels, film production, television production, publishing such as book and music publishing, massage therapy, salons, health and fitness, and real estate.
+
+Although some celebrities have achieved additional financial success from various business ventures, the vast majority of celebrities are not successful businesspeople and still rely on salaried labored wages to earn a living. Most businesses and investments are well known to have a 90 to 95 percent failure rate within the first five years of operation. Not all celebrities eventually succeed with their businesses and other related side ventures. Some celebrities either went broke or filed for bankruptcy as a result of dabbling with such side businesses or endorsements. Though some might question such validity since celebrities themselves are already well known, have mass appeal, and are well exposed to the general public. The average entrepreneur who is not well known and reputable to the general public does not the same marketing flexibility and status-quo as most celebrities allow and have. Therefore, compared to the average person who starts a business, celebrities already have all the cards and odds stacked in their favor. This means they can have an unfair advantage to expose their business ventures and endorsements and can easily capture a more significant amount of market share than the average entrepreneur.
+
+Mass media phenomena
+
+Celebrities often have fame comparable to royalty. As a result, there is a strong public curiosity about their private affairs. The release of Kim Kardashian's sex tape with rapper Ray J in 2003 brought her to a new level of fame, leading to magazine covers, book deals, and reality TV series.
+
+Celebrities may be resented for their accolades, and the public may have a love/hate relationship with celebrities. Due to the high visibility of celebrities' private lives, their successes and shortcomings are often made very public. Celebrities are alternately portrayed as glowing examples of perfection, when they garner awards, or as decadent or immoral if they become associated with a scandal. When seen in a positive light, celebrities are frequently portrayed as possessing skills and abilities beyond average people; for example, celebrity actors are routinely celebrated for acquiring new skills necessary for filming a role within a very brief time, and to a level that amazes the professionals who train them. Similarly, some celebrities with very little formal education can sometimes be portrayed as experts on complicated issues. Some celebrities have been very vocal about their political views. For example, Matt Damon expressed his displeasure with 2008 US vice presidential nominee Sarah Palin, as well as with the 2011 United States debt-ceiling crisis.
+
+Famous for being famous
+
+Famous for being famous, in popular culture terminology, refers to someone who attains celebrity status for no particular identifiable reason, or who achieves fame through association with a celebrity.  The term is a pejorative, suggesting the target has no particular talents or abilities. British journalist Malcolm Muggeridge made the first known usage of the phrase in the introduction to his book Muggeridge Through The Microphone: BBC Radio and Television (1967) in which he wrote:In the past if someone was famous or notorious, it was for something—as a writer or an actor or a criminal; for some talent or distinction or abomination. Today one is famous for being famous. People who come up to one in the street or in public places to claim recognition nearly always say: "I've seen you on the telly!"
+
+The coinages "famesque" and "celebutante" are of similar pejorative gist.
+
+Internet
+Also known as being internet famous.
+
+Asia
+A report by the BBC highlighted a longtime trend of Asian internet celebrities called Wanghong in Chinese. According to the BBC, there are two kinds of online celebrities in China—those who create original content, such as Papi Jiang, who is regularly censored by Chinese authorities for cursing in her videos, and Wanghongs fall under the second category, as they have clothing and cosmetics businesses on Taobao, China's equivalent of Amazon.
+
+Social networking and video hosting
+Most high-profile celebrities participate in social networking services and photo or video hosting platforms such as YouTube, Twitter, Facebook, Instagram, and Snapchat. Social networking services allow celebrities to communicate directly with their fans, removing the middle-man known as traditional media.Through social media many persons outside entertainment and sports sphere become celebrity in their own sphere. Social media humanizes celebrities in a way that arouses public fascination as evident by the success of magazines such as Us Weekly and People Weekly. Celebrity blogging have also spawned stars such as Perez Hilton who is well known for not only blogging but also outing celebrities.
+
+Social media and the rise of the smartphone have changed how celebrities are treated and how people gain the platform of fame. Not everything is as concealed as it was back in old Hollywood because now everything is put out on the internet by fans or even the celebrity themselves. Websites like Twitter, Facebook, Instagram, and YouTube allow people to become a celebrity overnight. For example, Justin Bieber got his start on YouTube by posting videos of him singing and got discovered. All of his fans got direct contact with his content and were able to interact with him on several social media platforms. Social media has substantially changed what it means to be a celebrity. Instagram and YouTube allow regular people to become rich and famous all from inside their home. It also allows fans to connect with their favorite celebrity without ever meeting them in person. Everything is being shared on social media so it makes it harder for celebrities to live private lives.
+
+Social media sites have also contributed to the fame of some celebrities, such as Tila Tequila who became known through MySpace.
+
+Access restriction
+Access to celebrities is strictly controlled by their entourage of staff which includes managers, publicists, agents, personal assistants, and bodyguards. Even journalists find it difficult to access celebrities for interviews.  Writer and actor Michael Musto said, "You have to go through many hoops just to talk to a major celebrity. You have to get past three different sets of publicists: the publicist for the event, the publicist for the movie, and then the celebrity's personal publicist. They all have to approve you."
+
+Celebrities also typically have security staff at their home, to protect them from similar threats.
+
+Fifteen minutes of fame
+
+"15 minutes of fame" is a phrase often used in reference to short-lived publicity, and mistakenly attributed to Andy Warhol. Certain "15 minutes of fame" celebrities can be average people seen with an A-list celebrity, who are sometimes noticed on entertainment news channels such as E! News. These persons are ordinary people becoming celebrities, often based on the ridiculous things they do. "In fact, many reality show contestants fall into this category: the only thing that qualifies them to be on TV is that they're real."
+
+Health implications
+Common threats such as stalking have spawned celebrity worship syndrome where a person becomes overly involved with the details of a celebrity's personal life.    Psychologists have indicated that though many people obsess over glamorous film, television, sport and music stars, the disparity in salaries in society seems to value professional athletes and entertainment industry-based professionals. One study found that singers, musicians, actors and athletes die younger on average than writers, composers, academics, politicians and businesspeople, with a greater incidence of cancer and especially lung cancer. However, it was remarked that the reasons for this remained unclear, with theories including innate tendencies towards risk-taking as well as the pressure or opportunities of particular types of fame.
+
+Fame might have negative psychological effects, and may lead to increasingly selfish tendencies and psychopathy. An academic study on the subject said that fame has an addictive quality to it.  When a celebrity's fame recedes over time, the celebrity may find it difficult to adjust psychologically.
+
+Recently, there has been more attention toward the impact celebrities have on health decisions of the population at large. It is believed that the public will follow celebrities' health advice to some extent. This can have positive impacts when the celebrities give solid, evidence-informed health advice, however, it can also have detrimental effects if the health advice is not accurate enough.
+
+See also
+
+Citations
+
+General and cited references 
+ Goldman, Jonathan (2011) Modernism Is the Literature of Celebrity. Austin: University of Texas Press, 2011. .
+ Grinin, Leonid (2009) "'People of Celebrity' as a New Social Stratum and Elite". In Hierarchy and Power in the History of Civilizations: Cultural Dimensions (pp. 183–206). Ed. by Leonid E. Grinin and Andrey V. Korotayev. Moscow: KRASAND/Editorial URSS, 2009.
+ 
+ Schikel, Richard. Intimate Strangers: The Culture of Celebrity. New York: Doubleday, 1985. .
+
+Further reading
+
+External links
+In statistics, cluster sampling is a sampling plan used when mutually homogeneous yet internally heterogeneous groupings are evident in a statistical population.  It is often used in marketing research. 
+
+In this sampling plan, the total population is divided into these groups (known as clusters) and a simple random sample of the groups is selected. The elements in each cluster are then sampled. If all elements in each sampled cluster are sampled, then this is referred to as a "one-stage" cluster sampling plan. If a simple random subsample of elements is selected within each of these groups, this is referred to as a "two-stage" cluster sampling plan. A common motivation for cluster sampling is to reduce the total number of interviews and costs given the desired accuracy. For a fixed sample size, the expected random error is smaller when most of the variation in the population is present internally within the groups, and not between the groups.
+
+Cluster elemental
+The population within a cluster should ideally be as heterogeneous as possible, but there should be homogeneity between clusters. Each cluster should be a small-scale representation of the total population. The clusters should be mutually exclusive and collectively exhaustive. A random sampling technique is then used on any relevant clusters to choose which clusters to include in the study. In single-stage cluster sampling, all the elements from each of the selected clusters are sampled. In two-stage cluster sampling, a random sampling technique is applied to the elements from each of the selected clusters.
+
+The main difference between cluster sampling and stratified sampling is that in cluster sampling the cluster is treated as the sampling unit so sampling is done on a population of clusters (at least in the first stage).  In stratified sampling, the sampling is done on elements within each stratum. In stratified sampling, a random sample is drawn from each of the strata, whereas in cluster sampling only the selected clusters are sampled. A common motivation for cluster sampling is to reduce costs by increasing sampling efficiency. This contrasts with stratified sampling where the motivation is to increase precision.
+
+There is also multistage cluster sampling, where at least two stages are taken in selecting elements from clusters.
+
+When clusters are of different sizes
+
+Without modifying the estimated parameter, cluster sampling is unbiased when the clusters are approximately the same size. In this case, the parameter is computed by combining all the selected clusters. When the clusters are of different sizes there are several options:
+
+One method is to sample clusters and then survey all elements in that cluster. Another method is a two-stage method of sampling a fixed proportion of units (be it 5%  or 50%, or another number, depending on cost considerations) from within each of the selected clusters. Relying on the sample drawn from these options will yield an unbiased estimator. However, the sample size is no longer fixed upfront. This leads to a more complicated formula for the standard error of the estimator, as well as issues with the optics of the study plan (since the power analysis and the cost estimations often relate to a specific sample size).
+
+A third possible solution is to use probability proportionate to size sampling. In this sampling plan, the probability of selecting a cluster is proportional to its size, so a large cluster has a greater probability of selection than a small cluster. The advantage here is that when clusters are selected with probability proportionate to size, the same number of interviews should be carried out in each sampled cluster so that each unit sampled has the same probability of selection.
+
+Applications of cluster sampling
+An example of cluster sampling is area sampling or geographical cluster sampling. Each cluster is a geographical area. Because a geographically dispersed population can be expensive to survey, greater economy than simple random sampling can be achieved by grouping several respondents within a local area into a cluster. It is usually necessary to increase the total sample size to achieve equivalent precision in the estimators, but cost savings may make such an increase in sample size feasible.
+
+Cluster sampling is used to estimate low mortalities in cases such as wars, famines and natural disasters.
+
+Fisheries science 
+It is almost impossible to take a simple random sample of fish from a population, which would require that individuals are captured individually and at random. This is because fishing gears capture fish in groups (or clusters). 
+
+In commercial fisheries sampling, the costs of operating at sea are often too large to select hauls individually and at random. Therefore, observations are further clustered by either vessel or fishing trip.
+
+Advantages
+
+ Can be cheaper than other sampling plans – e.g. fewer travel expenses, and administration cost.
+Feasibility: This sampling plan takes large populations into account. Since these groups are so small, deploying any other sampling plan would be very costly.
+Economy: The regular two major concerns of expenditure, i.e., traveling and listing, are greatly reduced in this method. For example: Compiling research information about every household in a city would be very costly, whereas compiling information about various blocks of the city will be more economical. Here, traveling as well as listing efforts will be greatly reduced.
+Reduced variability: in the rare case of a negative intraclass correlation between subjects within a cluster, the estimators produced by cluster sampling will yield more accurate estimates than data obtained from a simple random sample (i.e. the design effect will be larger than 1). This is not a commonplace scenario. 
+Major use: when the sampling frame of all elements is not available we can resort only to cluster sampling.
+
+Disadvantages
+
+ Higher sampling error, which can be expressed by the design effect: the ratio between the variance of an estimator made from the samples of the cluster study and the variance of an estimator obtained from a sample of subjects in an equally reliable, randomly sampled unclustered study. The larger the intraclass correlation is between subjects within a cluster the worse the design effect becomes (i.e.  the larger it gets from 1. Indicating a larger expected increase in the variance of the estimator). In other words, the more there is heterogeneity between clusters and more homogeneity between subjects within a cluster, the less accurate our estimators become. This is because in such cases we are better on sampling as many clusters as we can and making do with a small sample of subjects from within each cluster (i.e. two-stage cluster sampling).
+Complexity. Cluster sampling is more sophisticated and requires more attention with how to plan and how to analyze (i.e.: to take into account the weights of subjects during the estimation of parameters, confidence intervals, etc.)
+
+More on cluster sampling
+
+Two-stage cluster sampling
+Two-stage cluster sampling, a simple case of multistage sampling, is obtained by selecting cluster samples in the first stage and then selecting a sample of elements from every sampled cluster. Consider a population of N clusters in total. In the first stage, n clusters are selected using the ordinary cluster sampling method. In the second stage, simple random sampling is usually used. It is used separately in every cluster and the numbers of elements selected from different clusters are not necessarily equal. The total number of clusters N, the number of clusters selected n, and the numbers of elements from selected clusters need to be pre-determined by the survey designer. Two-stage cluster sampling aims at minimizing survey costs and at the same time controlling the uncertainty related to estimates of interest. This method can be used in health and social sciences. For instance, researchers used two-stage cluster sampling to generate a representative sample of the Iraqi population to conduct mortality surveys. Sampling in this method can be quicker and more reliable than other methods, which is why this method is now used frequently.
+
+Inference when the number of clusters is small
+Cluster sampling methods can lead to significant bias when working with a small number of clusters. For instance, it can be necessary to cluster at the state or city-level, units that may be small and fixed in number. Microeconometrics methods for panel data often use short panels, which is analogous to having few observations per clusters and many clusters. The small cluster problem can be viewed as an incidental parameter problem. While the point estimates can be reasonably precisely estimated, if the number of observations per cluster is sufficiently high, we need the number of clusters  for the asymptotics to kick in. If the number of clusters is low the estimated covariance matrix can be downward biased.
+
+Small numbers of clusters are a risk when there is serial correlation or when there is intraclass correlation as in the Moulton context. When having few clusters, we tend to underestimate serial correlation across observations when a random shock occurs, or the intraclass correlation in a Moulton setting. Several studies have highlighted the consequences of serial correlation and highlighted the small-cluster problem.
+
+In the framework of the Moulton factor, an intuitive explanation of the small cluster problem can be derived from the formula for the Moulton factor. Assume for simplicity that the number of observations per cluster is fixed at n. Below,  stands for the covariance matrix adjusted for clustering,  stands for the covariance matrix not adjusted for clustering, and ρ stands for the intraclass correlation:
+
+ 
+
+The ratio on the left-hand side indicates how much the unadjusted scenario overestimates the precision. Therefore, a high number means a strong downward bias of the estimated covariance matrix. A small cluster problem can be interpreted as a large n: when the data is fixed and the number of clusters is low, the number of data within a cluster can be high. It follows that inference, when the number of clusters is small, will not have the correct coverage.
+
+Several solutions for the small cluster problem have been proposed. One can use a bias-corrected cluster-robust variance matrix, make T-distribution adjustments, or use bootstrap methods with asymptotic refinements, such as the percentile-t or wild bootstrap, that can lead to improved finite sample inference. Cameron, Gelbach and Miller (2008) provide microsimulations for different methods and find that the wild bootstrap performs well in the face of a small number of clusters.
+
+See also
+
+ Multistage sampling
+ Sampling (statistics)
+ Simple random sampling
+ Stratified sampling
+
+References
+
+Sampling techniques
+Market research
+Charles Pierre Baudelaire (, ; ; 9 April 1821 – 31 August 1867) was a French poet who also worked as an essayist, art critic and translator. His poems are described as exhibiting mastery of rhyme and rhythm, containing an exoticism inherited from Romantics, and are based on observations of real life.
+
+His most famous work, a book of lyric poetry titled Les Fleurs du mal (The Flowers of Evil), expresses the changing beauty of nature in the rapidly industrialising Paris caused by Haussmann's renovation of Paris during the mid-19th century. Baudelaire's original style of prose-poetry influenced a generation of poets including Paul Verlaine, Arthur Rimbaud and Stéphane Mallarmé. He coined the term modernity (modernité) to designate the fleeting experience of life in an urban metropolis, and the responsibility of artistic expression to capture that experience. Marshall Berman has credited Baudelaire as being the first Modernist.
+
+Early life
+Baudelaire was born in Paris, France, on 9 April 1821, and baptized two months later at Saint-Sulpice Roman Catholic Church. His father, Joseph-François Baudelaire (1759–1827), a senior civil servant and amateur artist, who at 60, was 34 years older than Baudelaire's 26-year-old mother, Caroline (née Dufaÿs) (1794–1871); she was his second wife. 
+
+Joseph-François died during Baudelaire's childhood, at rue Hautefeuille, Paris, on 10 February 1827. The following year, Caroline married Lieutenant Colonel , who later became a French ambassador to various noble courts. 
+
+Baudelaire's biographers have often seen this as a crucial moment, considering that finding himself no longer the sole focus of his mother's affection left him with a trauma, which goes some way to explaining the excesses later apparent in his life. He stated in a letter to her that, "There was in my childhood a period of passionate love for you." Baudelaire regularly begged his mother for money throughout his career, often promising that a lucrative publishing contract or journalistic commission was just around the corner.
+
+Baudelaire was educated in Lyon, where he boarded. At 14, he was described by a classmate as "much more refined and distinguished than any of our fellow pupils...we are bound to one another...by shared tastes and sympathies, the precocious love of fine works of literature." 
+
+Baudelaire was erratic in his studies, at times diligent, at other times prone to "idleness". Later, he attended the Lycée Louis-le-Grand in Paris, studying law, a popular course for those not yet decided on any particular career. He began to frequent prostitutes and may have contracted gonorrhea and syphilis during this period. He also began to run up debts, mostly for clothes. 
+
+Upon gaining his degree in 1839, he told his brother "I don't feel I have a vocation for anything." His stepfather had in mind a career in law or diplomacy, but instead Baudelaire decided to embark upon a literary career. His mother later recalled: "Oh, what grief! If Charles had let himself be guided by his stepfather, his career would have been very different...He would not have left a name in literature, it is true, but we should have been happier, all three of us."
+
+His stepfather sent him on a voyage to Calcutta, India in 1841 in the hope of ending his dissolute habits. The trip provided strong impressions of the sea, sailing, and exotic ports, that he later employed in his poetry. Baudelaire later exaggerated his aborted trip to create a legend about his youthful travels and experiences, including "riding on elephants". 
+
+On returning to the taverns of Paris, he began to compose some of the poems of "Les Fleurs du Mal". At 21, he received a sizable inheritance but squandered much of it within a few years. His family obtained a decree to place his property in trust, which he resented bitterly, at one point arguing that allowing him to fail financially would have been the one sure way of teaching him to keep his finances in order.
+
+Baudelaire became known in artistic circles as a dandy and free-spender, going through much of his inheritance and allowance in a short period of time. During this time, Jeanne Duval, a Haitian born actress became his mistress. She was rejected by his family. His mother thought Duval a "Black Venus" who "tortured him in every way" and drained him of money at every opportunity. Baudelaire made a suicide attempt during this period.
+
+He took part in the Revolutions of 1848 and wrote for a revolutionary newspaper. However, his interest in politics was passing, as he was later to note in his journals.
+
+In the early 1850s, Baudelaire struggled with poor health, pressing debts, and irregular literary output. He often moved from one lodging to another to escape creditors. He undertook many projects that he was unable to complete, though he did finish translations of stories by Edgar Allan Poe.
+
+Upon the death of his stepfather in 1857, Baudelaire received no mention in the will but he was heartened nonetheless that the division with his mother might now be mended. At 36, he wrote to her: "believe that I belong to you absolutely, and that I belong only to you." His mother died on 16 August 1871, outliving her son by almost four years.
+
+Publishing career
+His first published work, under the pseudonym Baudelaire Dufaÿs, was his art review "Salon of 1845", which attracted immediate attention for its boldness. Many of his critical opinions were novel in their time, including his championing of Delacroix, and some of his views seem remarkably in tune with the future theories of the Impressionist painters.
+
+In 1846, Baudelaire wrote his second Salon review, gaining additional credibility as an advocate and critic of Romanticism. His continued support of Delacroix as the foremost Romantic artist gained widespread notice. The following year Baudelaire's novella La Fanfarlo was published.
+
+The Flowers of Evil
+
+Baudelaire was a slow and very attentive worker. However, he often was sidetracked by indolence, emotional distress and illness, and it was not until 1857 that he published Les Fleurs du mal (The Flowers of Evil), his first and most famous volume of poems. Some of these poems had already appeared in the Revue des deux mondes (Review of Two Worlds) in 1855, when they were published by Baudelaire's friend Auguste Poulet-Malassis. Some of the poems had appeared as "fugitive verse" in various French magazines during the previous decade.
+
+The poems found a small, yet appreciative audience. However, greater public attention was given to their subject matter. The effect on fellow artists was, as Théodore de Banville stated, "immense, prodigious, unexpected, mingled with admiration and with some indefinable anxious fear". Gustave Flaubert, recently attacked in a similar fashion for Madame Bovary (and acquitted), was impressed and wrote to Baudelaire: "You have found a way to rejuvenate Romanticism...You are as unyielding as marble, and as penetrating as an English mist."
+
+The principal themes of sex and death were considered scandalous for the period. He also touched on lesbianism, sacred and profane love, metamorphosis, melancholy, the corruption of the city, lost innocence, the oppressiveness of living, and wine. Notable in some poems is Baudelaire's use of imagery of the sense of smell and of fragrances, which is used to evoke feelings of nostalgia and past intimacy.
+
+The book, however, quickly became a byword for unwholesomeness among mainstream critics of the day. Some critics called a few of the poems "masterpieces of passion, art and poetry," but other poems were deemed to merit no less than legal action to suppress them. J. Habas led the charge against Baudelaire, writing in : "Everything in it which is not hideous is incomprehensible, everything one understands is putrid." Baudelaire responded to the outcry in a prophetic letter to his mother:
+"You know that I have always considered that literature and the arts pursue an aim independent of morality. Beauty of conception and style is enough for me. But this book, whose title (Fleurs du mal) says everything, is clad, as you will see, in a cold and sinister beauty. It was created with rage and patience. Besides, the proof of its positive worth is in all the ill that they speak of it. The book enrages people. Moreover, since I was terrified myself of the horror that I should inspire, I cut out a third from the proofs. They deny me everything, the spirit of invention and even the knowledge of the French language. I don't care a rap about all these imbeciles, and I know that this book, with its virtues and its faults, will make its way in the memory of the lettered public, beside the best poems of V. Hugo, Th. Gautier and even Byron."
+
+Baudelaire, his publisher and the printer  were successfully prosecuted for creating an offense against public morals. They were fined, but Baudelaire was not imprisoned. Six of the poems were suppressed, but printed later as Les Épaves (The Wrecks) (Brussels, 1866). Another edition of Les Fleurs du mal, without these poems, but with considerable additions, appeared in 1861. Many notables rallied behind Baudelaire and condemned the sentence. Victor Hugo wrote to him: "Your fleurs du mal shine and dazzle like stars...I applaud your vigorous spirit with all my might." Baudelaire did not appeal the judgment, but his fine was reduced. Nearly 100 years later, on 11 May 1949, Baudelaire was vindicated, the judgment officially reversed, and the six banned poems reinstated in France.
+
+In the poem "Au lecteur" ("To the Reader") that prefaces Les Fleurs du mal, Baudelaire accuses his readers of hypocrisy and of being as guilty of sins and lies as the poet:
+
+... If rape or arson, poison or the knife
+Has wove no pleasing patterns in the stuff
+Of this drab canvas we accept as life—
+It is because we are not bold enough!
+(Roy Campbell's translation)
+
+Final years
+
+Baudelaire next worked on a translation and adaptation of Thomas De Quincey's Confessions of an English Opium-Eater. Other works in the years that followed included Petits Poèmes en prose (Small Prose poems); a series of art reviews published in the Pays, Exposition universelle (Country, World Fair); studies on Gustave Flaubert (in L'Artiste, 18 October 1857); on Théophile Gautier (Revue contemporaine, September 1858); various articles contributed to Eugène Crépet's Poètes français; Les Paradis artificiels: opium et haschisch (French poets; Artificial Paradises: opium and hashish) (1860); and Un Dernier Chapitre de l'histoire des oeuvres de Balzac (A Final Chapter of the history of works of Balzac) (1880), originally an article "Comment on paye ses dettes quand on a du génie" ("How one pays one's debts when one has genius"), in which his criticism turns against his friends Honoré de Balzac, Théophile Gautier, and Gérard de Nerval.
+
+By 1859, his illnesses, his long-term use of laudanum, his life of stress, and his poverty had taken a toll and Baudelaire had aged noticeably. But at last, his mother relented and agreed to let him live with her for a while at Honfleur. Baudelaire was productive and at peace in the seaside town, his poem Le Voyage being one example of his efforts during that time. In 1860, he became an ardent supporter of Richard Wagner.
+
+His financial difficulties increased again, however, particularly after his publisher Poulet Malassis went bankrupt in 1861. In 1864, he left Paris for Belgium, partly in the hope of selling the rights to his works and to give lectures. His long-standing relationship with Jeanne Duval continued on-and-off, and he helped her to the end of his life. Baudelaire's relationships with actress Marie Daubrun and with courtesan Apollonie Sabatier, though the source of much inspiration, never produced any lasting satisfaction. He smoked opium, and in Brussels he began to drink to excess. Baudelaire suffered a massive stroke in 1866 and paralysis followed. After more than a year of aphasia, he received the last rites of the Catholic Church. The last year of his life was spent in a semi-paralyzed state in various "maisons de santé" in Brussels and in Paris, where he died on 31 August 1867. Baudelaire is buried in the Cimetière du Montparnasse, Paris.
+
+Many of Baudelaire's works were published posthumously. After his death, his mother paid off his substantial debts, and she found some comfort in Baudelaire's emerging fame. "I see that my son, for all his faults, has his place in literature." She lived another four years.
+
+Poetry
+{{blockquote|Who among us has not dreamt, in moments of ambition, of the miracle of a poetic prose, musical without rhythm and rhyme, supple and staccato enough to adapt to the lyrical stirrings of the soul, the undulations of dreams, and sudden leaps of consciousness. This obsessive idea is above all a child of giant cities, of the intersecting of their myriad relations.|Dedication of Le Spleen de Paris}}
+
+Baudelaire is one of the major innovators in French literature. His poetry is influenced by the French romantic poets of the earlier 19th century, although its attention to the formal features of verse connects it more closely to the work of the contemporary "Parnassians". As for theme and tone, in his works we see the rejection of the belief in the supremacy of nature and the fundamental goodness of man as typically espoused by the romantics and expressed by them in rhetorical, effusive and public voice in favor of a new urban sensibility, an awareness of individual moral complexity, an interest in vice (linked with decadence) and refined sensual and aesthetic pleasures, and the use of urban subject matter, such as the city, the crowd, individual passers-by, all expressed in highly ordered verse, sometimes through a cynical and ironic voice. Formally, the use of sound to create atmosphere, and of "symbols" (images that take on an expanded function within the poem), betray a move towards considering the poem as a self-referential object, an idea further developed by the Symbolists Verlaine and Mallarmé, who acknowledge Baudelaire as a pioneer in this regard.
+
+Beyond his innovations in versification and the theories of symbolism and "correspondences", an awareness of which is essential to any appreciation of the literary value of his work, aspects of his work that regularly receive much critical discussion include the role of women, the theological direction of his work and his alleged advocacy of "satanism", his experience of drug-induced states of mind, the figure of the dandy, his stance regarding democracy and its implications for the individual, his response to the spiritual uncertainties of the time, his criticisms of the bourgeois, and his advocacy of modern music and painting (e.g., Wagner, Delacroix). He made Paris the subject of modern poetry. He brought the city's details to life in the eyes and hearts of his readers.
+
+Critiques
+
+Baudelaire was an active participant in the artistic life of his times. As critic and essayist, he wrote extensively and perceptively about the luminaries and themes of French culture. He was frank with friends and enemies, rarely took the diplomatic approach and sometimes responded violently verbally, which often undermined his cause. His associations were numerous, including Gustave Courbet, Honoré Daumier, Félicien Rops, Franz Liszt, Champfleury, Victor Hugo, Gustave Flaubert, and Balzac.
+
+Edgar Allan Poe
+In 1847, Baudelaire became acquainted with the works of Poe, in which he found tales and poems that had, he claimed, long existed in his own brain but never taken shape. Baudelaire saw in Poe a precursor and tried to be his French contemporary counterpart. From this time until 1865, he was largely occupied with translating Poe's works; his translations were widely praised. Baudelaire was not the first French translator of Poe, but his "scrupulous translations" were considered among the best. These were published as Histoires extraordinaires (Extraordinary stories) (1856), Nouvelles histoires extraordinaires (New extraordinary stories) (1857), Aventures d'Arthur Gordon Pym, Eureka, and Histoires grotesques et sérieuses (Grotesque and serious stories) (1865). Two essays on Poe are to be found in his Œuvres complètes (Complete works) (vols. v. and vi.).
+
+Eugène Delacroix
+A strong supporter of the Romantic painter Delacroix, Baudelaire called him "a poet in painting". Baudelaire also absorbed much of Delacroix's aesthetic ideas as expressed in his journals. As Baudelaire elaborated in his "Salon of 1846", "As one contemplates his series of pictures, one seems to be attending the celebration of some grievous mystery...This grave and lofty melancholy shines with a dull light.. plaintive and profound like a melody by Weber." Delacroix, though appreciative, kept his distance from Baudelaire, particularly after the scandal of Les Fleurs du mal. In private correspondence, Delacroix stated that Baudelaire "really gets on my nerves" and he expressed his unhappiness with Baudelaire's persistent comments about "melancholy" and "feverishness".
+
+Richard Wagner
+Baudelaire had no formal musical training, and knew little of composers beyond Beethoven and Weber. Weber was in some ways Wagner's precursor, using the leitmotif and conceiving the idea of the "total art work" ("Gesamtkunstwerk"), both of which gained Baudelaire's admiration. Before even hearing Wagner's music, Baudelaire studied reviews and essays about him, and formulated his impressions. Later, Baudelaire put them into his non-technical analysis of Wagner, which was highly regarded, particularly his essay "Richard Wagner et Tannhäuser à Paris". Baudelaire's reaction to music was passionate and psychological. "Music engulfs (possesses) me like the sea." After attending three Wagner concerts in Paris in 1860, Baudelaire wrote to the composer: "I had a feeling of pride and joy in understanding, in being possessed, in being overwhelmed, a truly sensual pleasure like that of rising in the air." Baudelaire's writings contributed to the elevation of Wagner and to the cult of Wagnerism that swept Europe in the following decades.
+
+Théophile Gautier
+Gautier, writer and poet, earned Baudelaire's respect for his perfection of form and his mastery of language, though Baudelaire thought he lacked deeper emotion and spirituality. Both strove to express the artist's inner vision, which Heinrich Heine earlier stated: "In artistic matters, I am a supernaturalist. I believe that the artist can not find all his forms in nature, but that the most remarkable are revealed to him in his soul." Gautier's frequent meditations on death and the horror of life are themes which influenced Baudelaire's writings. In gratitude for their friendship and commonality of vision, Baudelaire dedicated Les Fleurs du mal to Gautier.
+
+Édouard Manet
+
+Manet and Baudelaire became constant companions from around 1855. In the early 1860s, Baudelaire accompanied Manet on daily sketching trips and often met him socially. Manet also lent Baudelaire money and looked after his affairs, particularly when Baudelaire went to Belgium. Baudelaire encouraged Manet to strike out on his own path and not succumb to criticism. "Manet has great talent, a talent which will stand the test of time. But he has a weak character. He seems to me crushed and stunned by shock." In his painting Music in the Tuileries, Manet includes portraits of his friends Théophile Gautier, Jacques Offenbach, and Baudelaire. While it's difficult to differentiate who influenced whom, both Manet and Baudelaire discussed and expressed some common themes through their respective arts. Baudelaire praised the modernity of Manet's subject matter: "almost all our originality comes from the stamp that 'time' imprints upon our feelings." When Manet's famous Olympia (1865), a portrait of a nude prostitute, provoked a scandal for its blatant realism mixed with an imitation of Renaissance motifs, Baudelaire worked privately to support his friend, though he offered no public defense (he was, however, ill at the time). When Baudelaire returned from Belgium after his stroke, Manet and his wife were frequent visitors at the nursing home and she played passages from Wagner for Baudelaire on the piano.
+
+Nadar
+Nadar (Félix Tournachon) was a noted caricaturist, scientist and important early photographer. Baudelaire admired Nadar, one of his close friends, and wrote: "Nadar is the most amazing manifestation of vitality." They moved in similar circles and Baudelaire made many social connections through him. Nadar's ex-mistress Jeanne Duval became Baudelaire's mistress around 1842. Baudelaire became interested in photography in the 1850s, and denouncing it as an art form, advocated its return to "its real purpose, which is that of being the servant to the sciences and arts". Photography should not, according to Baudelaire, encroach upon "the domain of the impalpable and the imaginary". Nadar remained a stalwart friend right to Baudelaire's last days and wrote his obituary notice in .
+
+Philosophy
+Many of Baudelaire's philosophical proclamations were considered scandalous and intentionally provocative in his time. He wrote on a wide range of subjects, drawing criticism and outrage from many quarters. Along with Poe, Baudelaire named the arch-reactionary Joseph de Maistre as his maître à penser and adopted increasingly aristocratic views. In his journals, he wrote:
+
+Influence and legacy
+
+Baudelaire's influence on the direction of modern French (and English) language literature was considerable. The most significant French writers to come after him were generous with tributes; four years after his death, Arthur Rimbaud praised him in a letter as "the king of poets, a true God". In 1895, Stéphane Mallarmé published "Le Tombeau de Charles Baudelaire", a sonnet in Baudelaire's memory. Marcel Proust, in an essay published in 1922, stated that, along with Alfred de Vigny, Baudelaire was "the greatest poet of the nineteenth century".
+
+In the English-speaking world, Edmund Wilson credited Baudelaire as providing an initial impetus for the Symbolist movement by virtue of his translations of Poe. In 1930, T. S. Eliot, while asserting that Baudelaire had not yet received a "just appreciation" even in France, claimed that the poet had "great genius" and asserted that his "technical mastery which can hardly be overpraised...has made his verse an inexhaustible study for later poets, not only in his own language". In a lecture delivered in French on "Edgar Allan Poe and France" (Edgar Poe et la France) in Aix-en-Provence in April 1948, Eliot stated that "I am an English poet of American origin who learnt his art under the aegis of Baudelaire and the Baudelairian lineage of poets." Eliot also alluded to Baudelaire's poetry directly in his own poetry. For example, he quoted the last line of Baudelaire's "Au Lecteur" in the last line of Section I of The Waste Land.
+
+At the same time that Eliot was affirming Baudelaire's importance from a broadly conservative and explicitly Christian viewpoint, left-wing critics such as Wilson and Walter Benjamin were able to do so from a dramatically different perspective. Benjamin translated Baudelaire's Tableaux Parisiens into German and published a major essay on translation as the foreword.
+
+In the late 1930s, Benjamin used Baudelaire as a starting point and focus for Das Passagenwerk, his monumental attempt at a materialist assessment of 19th-century culture. For Benjamin, Baudelaire's importance lay in his anatomies of the crowd, of the city and of modernity. He says that, in Les Fleurs du mal, "the specific devaluation of the world of things, as manifested in the commodity, is the foundation of Baudelaire's allegorical intention."
+
+François Porche published a poetry collection called Charles Baudelaire: Poetry Collection in memory of Baudelaire.
+
+The novel A Singular Conspiracy (1974) by Barry Perowne is a fictional treatment of the unaccounted period in Edgar Allan Poe's life from January to May 1844, in which (among other things) Poe becomes involved with a young Baudelaire in a plot to expose Baudelaires' stepfather to blackmail, to free up Baudelaires' patrimony.
+
+Vanderbilt University has "assembled one of the world's most comprehensive research collections on...Baudelaire". Les Fleurs du mal has a number of scholarly references.
+
+Works
+
+ Salon de 1845, 1845
+ Salon de 1846, 1846
+ La Fanfarlo, 1847
+ Les Fleurs du mal, 1857
+ Les paradis artificiels, 1860
+ Réflexions sur Quelques-uns de mes Contemporains, 1861
+ Le Peintre de la Vie Moderne, 1863
+ Curiosités Esthétiques, 1868
+ L'art romantique, 1868
+ Le Spleen de Paris, 1869. Paris Spleen (Contra Mundum Press: 2021)
+ Translations from Charles Baudelaire, 1869 (Early English translation of several of Baudelaire's poems, by Richard Herne Shepherd)
+ Oeuvres Posthumes et Correspondance Générale, 1887–1907
+ Fusées, 1897
+ Mon Coeur Mis à Nu, 1897. My Heart Laid Bare & Other Texts (Contra Mundum Press: 2017; 2020)
+ Oeuvres Complètes, 1922–53 (19 vols.)
+ Mirror of Art, 1955
+ The Essence of Laughter, 1956
+ Curiosités Esthétiques, 1962
+ The Painter of Modern Life and Other Essays, 1964
+ Baudelaire as a Literary Critic, 1964
+ Arts in Paris 1845–1862, 1965
+ Selected Writings on Art and Artists, 1972
+ Selected Letters of Charles Baudelaire, 1986
+ Twenty Prose Poems, 1988
+ Critique d'art; Critique musicale, 1992
+ Belgium Stripped Bare (Contra Mundum Press: 2019)
+
+Musical adaptations
+ French composer Claude Debussy set five of Baudelaire's poems to music in 1890: Cinq poèmes de Charles Baudelaire (Le Balcon, Harmonie du soir, Le Jet d'eau, Recueillement and La Mort des amants). 
+ French composer Henri Duparc set two of Baudelaire's poems to music: "L'Invitation au voyage" in 1870, and "La vie antérieure" in 1884.
+ English composer Mark-Anthony Turnage composed settings of two of Baudelaire's poems, "Harmonie du soir" and "L'Invitation au voyage", for soprano and seven instruments.
+ American electronic musician Ruth White (composer) recorded some of Baudelaire's poems in Les Fleurs du Mal as chants over electronic music in a 1969 recording, Flowers of Evil.
+ French singer-songwriter Léo Ferré devoted himself to set Baudelaire's poetry into music in three albums: Les Fleurs du mal in 1957 (12 poems), Léo Ferré chante Baudelaire in 1967 (24 poems, including one from Le Spleen de Paris), and the posthumous Les Fleurs du mal (suite et fin) (21 poems), recorded in 1977 but released in 2008.
+ Soviet/Russian composer David Tukhmanov has set Baudelaire's poem to music (cult album On a Wave of My Memory, 1975).
+ American avant-garde composer, vocalist and performer Diamanda Galás made an interpretation in original French of Les Litanies de Satan from Les Fleurs du mal, in her debut album titled The Litanies of Satan, which consists of tape and electronics effects with layers of her voice.
+ French singer David TMX recorded the poems "Lesbos" and "Une Charogne" from The Flowers of Evil.
+ French metal/shoegaze groups Alcest and Amesoeurs used his poetry for the lyrics of the tracks "Élévation" (on Le Secret) and "Recueillement" (on Amesoeurs), respectively. Celtic Frost used his poem Tristesses de la lune as a lyrics for song on album Into the Pandemonium.
+ French Black Metal bands Mortifera and Peste Noire used Baudelaire's poems as lyrics for the songs "Le revenant" and "Ciel brouillé" (on Vastiia Tenebrd Mortifera by Mortifera) and "Le mort joyeux" and "Spleen" (on La Sanie des siècles – Panégyrique de la dégénérescence by Peste Noire)
+ Israeli singer Maor Cohen's 2005 album, the Hebrew name of which translates to French as "Les Fleurs du Mal", is a compilation of songs from Baudelaire's book of the same name. The texts were translated to Hebrew by Israeli poet Dori Manor, and the music was composed by Cohen.
+ Italian singer Franco Battiato set Invitation au voyage to music as Invito Al Viaggio on his 1999 album Fleurs (Esempi Affini Di Scritture E Simili).
+ American composer Gérard Pape set Tristesses de la lune/Sorrows of the Moon from Fleurs du Mal for voice and electronic tape.
+ French band Marc Seberg wrote an adaptation of Recueillement for their 1985 album Le Chant Des Terres.
+Dutch composer Marjo Tal set several of Baudelaire's poems to music.
+ Russian heavy metal band Black Obelisk used Russian translations of several Baudelaire poems as lyrics for their songs.
+ French singer Mylène Farmer performed "L'Horloge" to music by Laurent Boutonnat on the album Ainsi soit je and the opening number of her 1989 concert tour. On her latest album "Désobéissance" (2018) she recorded Baudelaire's preface to "Les Fleurs du Mal", "Au lecteur". The French journalist Hugues Royer mentioned several allusions and interpretations of Baudelaire's poems and quotations used by Farmer in various songs in his book "Mylène"  (published in 2008).
+ In 2009 the Italian rock band C.F.F. e il Nomade Venerabile released Un jour noir, a song inspired by Spleen, contained in the album Lucidinervi (Otium Records / Compagnia Nuove Indye). The video clip is available on YouTube.
+ German aggrotech band C-Drone-Defect used the translation of "Le Rebelle" by Roy Campbell as lyrics for the song "Rebellis" on their 2009 album Dystopia.
+ English rock band The Cure used the translation of "Les yeux des pauvres" as lyrics for the song "How Beautiful You Are".
+ French singer-songwriter and musician Serge Gainsbourg has set Baudelaire's poem "Dancing Snake" (Le serpent qui danse) to music in his 1964 song "Baudelaire".
+ Greek black metal band Rotting Christ adapted Baudelaire's poem "Les Litanies De Satan" from Fleurs du Mal for a song of the same name in their 2016 album Rituals.
+ Belgian female-fronted band Exsangue released the debut video for the single "A une Malabaraise", and the lyrics are based on Baudelaire's same-named sonnet in 2016.
+ Belgian electronic music band Modern Cubism has released two albums where poems of Baudelaire are used as lyrics, Les Plaintes d’un Icare in 2008, and live album Live Complaints in 2010.
+ American rapper Tyler, the Creator released his album Call Me If You Get Lost in 2021. Throughout the album, Tyler, the Creator refers to himself as "Tyler Baudelaire".
+ Canadian singer-songwriter Pierre Lapointe set Baudelaire's poem "Le serpent qui danse" to music on his 2022 album L'heure mauve.
+"L'Invitation au voyage" makes up the lyrics to two tracks on I've Seen a Way from Mandy, Indiana in 2023.
+
+See also
+
+ Épater la bourgeoisieReferences
+Notes
+
+Sources
+ 
+ Pichois, Claude, Baudelaire (Hamish Hamilton, 1989) translated by Graham Robb, with research by Jean Ziegler.
+ 
+
+External links
+
+Charles Baudelaire's Cats
+The Baudelaire Song Project – site of The Baudelaire Song Project, a UK-based AHRC-funded academic project examining song settings of Baudelaire's poetry
+Twilight to Dawn: Charles Baudelaire – Cordite Poetry Review
+www.baudelaire.cz – largest Internet site dedicated to Charles Baudelaire. Poems and prose are available in English, French and Czech.
+Charles Baudelaire – site dedicated to Baudelaire's poems and prose, containing Fleurs du mal, Petit poemes et prose, Fanfarlo and more in French
+Charles Baudelaire International Association
+Nikolas Kompridis on Baudelaire's poetry, art, and the "memory of loss" (Flash/HTML5)
+baudelaireetbengale.blogspot.com – the influence of Baudelaire on Bengali poetry
+
+Harmonie du soir – Tina Noiret
+
+Online texts
+
+Charles Baudelaire – largest site dedicated to Baudelaire's poems and prose, containing Fleurs du mal, Petit poemes et prose, Fanfarlo and more in French
+Poems by Charles Baudelaire – selected works at Poetry Archive
+Baudelaire's poems at Poems Found in Translation
+Baudelaire – Eighteen Poems
+"baudelaire in english", Onedit.net – Sean Bonney's experimental translations of Baudelaire (humor)
+Works by Charles Baudelaire 
+ Baudelaire par ses Amis
+
+Single works
+FleursDuMal.org – Definitive online presentation of Fleurs du mal'', featuring the original French alongside multiple English translations
+An illustrated version (8 Mb) of Les Fleurs du Mal, 1861 edition (Charles Baudelaire / une édition illustrée par inkwatercolor.com)
+"The Rebel"  – poem by Baudelaire
+Les Foules (The Crowds) – English translation
+
+ 
+1821 births
+1867 deaths
+19th-century French journalists
+19th-century French poets
+19th-century French translators
+19th-century male writers
+English–French translators
+French male journalists
+Translators of Edgar Allan Poe
+Burials at Montparnasse Cemetery
+Deaths from syphilis
+Decadent literature
+French art critics
+French Roman Catholics
+Lycée Louis-le-Grand alumni
+Obscenity controversies in literature
+Philosophers of pessimism
+Poètes maudits
+French psychedelic drug advocates
+Sonneteers
+Symbolist poets
+Writers from Paris
+"Casey at the Bat: A Ballad of the Republic, Sung in the Year 1888" is a mock-heroic poem written in 1888 by Ernest Thayer. It was first published anonymously in The San Francisco Examiner (then called The Daily Examiner) on June 3, 1888, under the pen name "Phin", based on Thayer's college nickname, "Phinney". Featuring a dramatic narrative about a baseball game, the poem was later popularized by DeWolf Hopper in many vaudeville performances. It has become one of the best-known poems in American literature.
+
+Synopsis
+A baseball team from the fictional town of "Mudville" (the home team) is losing by two runs in its last inning. Both the team and its fans, a crowd of 5,000, believe that they can win if Casey, Mudville's star player, gets to bat. However, Casey is scheduled to be the fifth batter of the inning, and the first two batters (Cooney and Barrows) fail to get on base. The next two batters (Flynn and Jimmy Blake) are perceived to be weak hitters with little chance of reaching base to allow Casey a chance to bat.
+
+Surprisingly, Flynn hits a single, and Blake follows with a double that allows Flynn to reach third base.  Both runners are now in scoring position and Casey represents the potential winning run. Casey is so sure of his abilities that he does not swing at the first two pitches, both called strikes. On the last pitch, the overconfident Casey strikes out swinging, ending the game and sending the crowd home unhappy.
+
+Text
+
+The text is filled with references to baseball as it was in 1888, which in many ways is not far removed from today's version. As a work, the poem encapsulates much of the appeal of baseball, including the involvement of the crowd. It also has a fair amount of baseball jargon that can pose challenges for the uninitiated.
+
+This is the complete poem as it originally appeared in The Daily Examiner. After publication, various versions with minor changes were produced.
+
+Inspiration
+Thayer said he chose the name "Casey" after a non-player of Irish ancestry he once knew named Daniel H. Casey; it is open to debate whom, if anyone, he modeled the character after. It has been reported that Thayer's best friend Samuel Winslow, who played baseball at Harvard, was the inspiration for Casey.
+
+Another candidate is National League player Mike "King" Kelly, who became famous when Boston paid Chicago a record $10,000 for him. He had a personality that fans liked to cheer or jeer. After the 1887 season, Kelly went on a playing tour to San Francisco. Thayer, who wrote "Casey" in 1888, covered the San Francisco leg for the San Francisco Examiner.
+
+Thayer, in a letter he wrote in 1905, mentions Kelly as showing "impudence" in claiming to have written the poem. The author of the 2004 definitive biography of Kelly—which included a close tracking of his vaudeville career—did not find Kelly claiming to have been the author.
+
+Composition and publication history
+"Casey at the Bat" was first published in The Daily Examiner on  June 3, 1888.
+
+A month after the poem was published, it was reprinted as "Kelly at the Bat" in the New York Sporting Times.
+Aside from omitting the first five verses, the only changes from the original are substitutions of Kelly for Casey, and Boston for Mudville. King Kelly, then of the Boston Beaneaters, was one of baseball's two biggest stars at the time (along with Cap Anson).
+
+In 1897, the magazine Current Literature noted the two versions and said, "The locality, as originally given, is Mudville, not Boston; the latter was substituted to give the poem local color."
+
+Live performances
+
+DeWolf Hopper gave the poem's first stage recitation on August 14, 1888, at New York's Wallack Theatre as part of the comic opera Prinz Methusalem in the presence of the Chicago White Stockings and New York Giants baseball teams; August 14, 1888 was also Thayer's 25th birthday. Hopper became known as an orator of the poem, and recited it more than 10,000 times (by his count—some tabulations are as much as four times higher) before his death.
+
+On stage in the early 1890s, baseball star Kelly recited the original "Casey" a few dozen times and not the parody. For example, in a review in 1893 of a variety show he was in, the Indianapolis News said, "Many who attended the performance had heard of Kelly's singing and his reciting, and many had heard De Wolf Hopper recite 'Casey at the Bat' in his inimitable way. Kelly recited this in a sing-song, school-boy fashion."  Upon Kelly's death, a writer would say he gained "considerable notoriety by his ludicrous rendition of 'Casey at the Bat,' with which he concluded his 'turn' [act] at each performance."
+
+During the 1980s, the magic/comedy team Penn & Teller performed a version of "Casey at the Bat" with Teller (the "silent" partner) struggling to escape a straitjacket while suspended upside-down over a platform of sharp steel spikes. The set-up was that Penn Jillette would leap off his chair upon finishing the poem, releasing the rope which supported Teller, and send Teller to a gruesome death if Teller had failed to free himself by that time. Jillette enhanced the drama of the performance by drastically accelerating the pace of his recital after the first few stanzas, greatly reducing the time that Teller had left to work free from his bonds.
+
+Recordings
+
+The first recorded version of "Casey at the Bat" was made by Russell Hunting, speaking in a broad Irish accent, in 1893; an 1898 cylinder recording of the text made for the Columbia Graphophone label by Hunting can be accessed from the Cylinder Preservation and Digitization Project at the University of California, Santa Barbara Library.
+
+DeWolf Hopper's more famous recorded recitation was released in October 1906.
+
+In 1946, Walt Disney released a recording of the narration of the poem by Jerry Colonna, which accompanied the studio's animated cartoon adaptation of the poem (see below).
+
+In 1973, the Cincinnati Symphony Orchestra commissioned its former Composer-in-Residence, Frank Proto, to create a work to feature Baseball Hall-of-Famer Johnny Bench with the orchestra. The result "Casey At The Bat – an American Folk Tale for Narrator and Orchestra" was an immediate hit and recorded by Bench and the orchestra. It has since been performed more than 800 times by nearly every major and Metropolitan orchestra in the U.S. and Canada.
+
+In 1980, baseball pitcher Tug McGraw recorded Casey at The Bat—an American Folk Tale for Narrator and Orchestra by Frank Proto with Peter Nero and the Philly Pops.
+
+In 1996, actor James Earl Jones recorded the poem with arranger/composer Steven Reineke and the Cincinnati Pops Orchestra.
+
+On a 1997 CD set with memorable moments and stories from the game of baseball titled Take Me Out to the Ball Game produced by Jerry Hoffman and Douglas Duer, a Vincent Price oration of the poem is a slightly altered version of the original.
+
+In 1998, actor Sir Derek Jacobi recorded the poem with composer/arranger Randol Alan Bass and the National Symphony of London, with the composer conducting. This work, titled "Casey at the Bat", has been recorded by the Boston Pops Orchestra, Keith Lockhart conducting.
+In 2013, Dave Jageler and Charlie Slowes, both radio announcers for the Washington Nationals, each made recordings of the poem for the Library of Congress to mark the 125th anniversary of its first publication.
+
+In 2022 The Rose Theatre Co. recorded it as an episode on The Rose Rhapsody podcast featuring a performance by veteran DC actor and vocal artist Jim Brady.
+
+Mudville
+A rivalry of sorts has developed between two cities claiming to be the Mudville described in the poem.
+ 
+Residents of Holliston, Massachusetts, where there is a neighborhood called Mudville, claim it as the Mudville described in the poem. Thayer grew up in nearby Worcester, Massachusetts, where he wrote the poem in 1888; his family owned a wool mill less than  from Mudville's baseball field.
+
+However, residents of Stockton, California—which was known for a time as Mudville prior to incorporation in 1850—also lay claim to being the inspiration for the poem. In 1887, Thayer covered baseball for The Daily Examiner—owned by his Harvard classmate William Randolph Hearst—and is said to have covered the local California League team, the Stockton Ports. For the 1902 season, after the poem became popular, Stockton's team was renamed the Mudville Nine. The team reverted to the Mudville Nine moniker for the 2000 and 2001 seasons. The Visalia Rawhide, another California League team, currently keeps Mudville alive playing in Mudville jerseys on June 3 each year.
+
+Despite the towns' rival claims, Thayer himself told the Syracuse Post-Standard that "the poem has no basis in fact."
+
+Adaptations
+
+The poem has been adapted to diverse types of media:
+
+Books
+Ralph Andreano's 1965 book, No Joy in Mudville, laments the death of heroes in modern baseball.
+In the book Faithful by Steward O'Nan and Stephen King, describing the 2004 season of the Boston Red Sox, a chapter contributed by King is named "The Gloom is gone from Mudville".
+Wallace Tripp illustrated a popular 1978 book of the poem.
+Kurtis Scaletta's 2009 children's novel, Mudville, is about a town where it has been raining for 22 years, delaying a baseball game between two rival towns.
+Christopher Bing's 2000 children's book, an illustrated version of the original poem by Thayer, won a Caldecott Honor for its line drawing illustrations made to look like newspaper articles from 1888.
+Del Leonard Jones’ 2020 historical novel At The Bat: The Strikeout That Shamed America, is based on the poem as told from the umpire's point of view. Goodreads ranks it as the third best baseball novel.
+
+Comics
+Marvel Comics published a spoof in August 1969, in the 9th issue of Not Brand Echh, featuring parodies of their popular heroes and villains, and the Bulk (parody of the Hulk) as Casey.
+DC Comics' series Fables from the Vertigo Comics imprint featured an adaptation titled "Out to the Ball Game", which features a similar baseball match, with Weyland Smith playing the part of Casey against a team of goblins.
+
+Film
+In 1922, Lee De Forest recorded DeWolf Hopper reciting the poem in DeForest's Phonofilm sound-on-film process.
+In 1927, a feature-length silent film Casey at the Bat was released, starring Wallace Beery, Ford Sterling, and ZaSu Pitts. At least three other films based on Thayer's poem preceded this 1927 release: an Edison short in 1899, another short starring Harry T. Morey in 1913, and a five-reel feature starring DeWolf Hopper in 1916.
+Walt Disney produced an animated short adaptation of the poem for the film Make Mine Music (1946) and uses the original text, but is set in 1902 according to the opening song's lyrics, instead of 1888. This version is recited by Jerry Colonna. It was later released as an individual short on July 16, 1954. Several differences and expansions from the original text include, but are not limited to; the team playing against Mudville is identified as Burbank, Barrows failing to get on base when he smacks the ball back into the pitcher's mitt, Flynn hitting a single (much to his own surprise) due to trying to get his bat out of his moustache which got caught in it and Blake getting a double due to an attempt by the visiting team's catcher to set his foot on fire. All the human characters in this cartoon have hands with 4 fingers instead of the real-life 5 fingers. There is also an ending when at the now-storm racked pitch following Casey's strike out, Casey takes out his failure by chasing the ball across the pitch whislt trying to hit it.
+The poem is cited in Frederic Wiseman's documentary High School (1968) by a teacher in a classroom.
+A 1976 animated short adaptation, featuring narration by Paul Frees, was released in 1976 by Fine Arts Films.
+In 1986, Elliott Gould starred as "Casey" in the Shelley Duvall's Tall Tales and Legends adaptation of the story, which also starred Carol Kane, Howard Cosell, Bob Uecker, Bill Macy and Rae Dawn Chong. The screenplay, adapted from the poem, was written by Andy Borowitz and the production was directed by David Steinberg.
+In The Dream Team (1989), Michael Keaton's character announces that "there is no joy in Mudville" after giving a fellow mental patient three "strikes" for psychotic behavior.
+In 1993 the last paragraph is quoted in the film Short Cuts (by Robert Altman), when Lyle Lovett as Andy Bitkower is calling anonymously Andie MacDowell as Ann Finnigan in minute 01:34:58.
+In the film What Women Want (2000), Mel Gibson's character tries to block out his daughter's thoughts by muttering the poem under his breath. 
+The poem is briefly cited in the revised version of Bad News Bears (2005).
+
+Radio 
+The poem was adapted for an episode of On Stage that aired on CBS on April 16, 1953. It was written by E. Jack Neuman and starred Elliott Lewis, Cathy Lewis, Hy Averback, Herb Butterfield, Byron Kane, Peter Leeds, Hal March, Howard McNear, and Sidney Miller.
+Radio personality Casey Kasem self-identified on-air as "Casey at the mic."
+
+Television
+Jackie Gleason in his "Reginald Van Gleason III" persona (in full Mudville baseball uniform) performed a recitation of the poem on his And Awaaaay We Go! album.
+Season 1, episode 35 of The Twilight Zone, "The Mighty Casey", concerns a baseball player who is actually a robot (June 17, 1960).
+In the Northern Exposure episode "The Graduate", Chris Stevens gains his Master's degree in Comparative literature by subjecting his assessors to a spirited re-enactment of the poem.
+In General Hospital, Steve Hardy performs the poem during the 1994 Nurses' Ball while dressed in a Mudville baseball uniform. He concludes by telling the audience not to worry because Casey is married to the Mudville owner's daughter.
+In How I Met Your Mother, the episode "Bedtime Stories" (which is done entirely in rhymes) features a subplot called "Mosby At The Bat". The start of that section of the episode begins with "The outlook wasn't brilliant for poor Ted's romantic life", a line based on the opening of the original poem.
+In One Tree Hill, season 8 episode "The Man Who Sailed Around His Soul" was a flashback-heavy episode revolving around a baseball game with Jamie Scott narrating the poem throughout.
+Magician Rick Lax recited the entire poem while performing a card trick on an episode Penn & Teller: Fool Us.
+
+Music
+Art-song composer Sidney Homer turned the poem into a song. Sheet music was published by G. Schirmer in 1920 as part of Six Cheerful Songs to Poems of American Humor.
+William Schuman composed an opera, The Mighty Casey (1953), based on the poem.
+The song "No Joy in Mudville" from Death Cab for Cutie's album We Have the Facts and We're Voting Yes directly references the poem.
+The song "Centerfield" by John Fogerty includes the line "Well, I spent some time in the Mudville Nine, watchin' it from the bench. You know I took some lumps when the Mighty Casey struck out."
+The song "No Joy In Pudville" by Steroid Maximus is a reference to this poem.
+Joe Walsh's 1973 song "Rocky Mountain Way" features the lyrics "Bases are loaded/ And Casey's at bat/ Playin' it play-by-play/ Time to change the batter."
+In 2008 American composer Randol Alan Bass used the song "Take Me Out to the Ball Game" by Alfred Von Tilzer and Jack Norworth in Casey at the Bat, a setting of the poem for concert band and narrator.
+ the ska band Mustard plug made a rewrite of the song Casey at the bat for their 1993  album Big daddy multitude and the song it self is a reference to a baseball game along with ska music the song is actually called "Ball Park Skank"
+
+Theatre
+"Casey at the Bat" was adapted into a 1953 opera by American composer William Schuman. 
+Allen Feinstein composed an adaptation for orchestra with a narrator. 
+An orchestral version was composed by Stephen Simon in 1976 for the US bicentennial; Maestro Classics' has recorded it with the London Philharmonic Orchestra, Stephen Simon conducting with Yadu (Dr. Konrad Czynski) narrating. 
+An orchestral adaptation by composer Frank Proto has been recorded by the Cincinnati Pops orchestra conducted by Erich Kunzel with baseball star Johnny Bench narrating. 
+The Dallas Symphony commissioned an arrangement of "Casey" by Randol Alan Bass in 2001, which he later arranged for concert band.
+A version for wind band and narrator by Donald Shirer based on the song "Take Me Out to the Ball Game" had its world premiere in July 2008.
+
+Derivations
+
+For a relatively short poem apparently dashed off quickly (and denied by its author for years), "Casey at the Bat" had a profound effect on American popular culture. It has been recited, re-enacted, adapted, dissected, parodied, and subjected to just about every other treatment one could imagine.
+
+Sequels
+"Casey's Revenge", by Grantland Rice (1907), gives Casey another chance against the pitcher who had struck him out in the original story. It was written in 1906, and its first known publication was in the quarterly magazine The Speaker in June 1907, under the pseudonym of James Wilson. In this version, Rice cites the nickname "Strike-Out Casey", hence the influence on Casey Stengel's name. Casey's team is down three runs by the last of the ninth, and once again Casey is down to two strikes—with the bases full this time. However, he connects, and hits the ball so far that it is never found.
+"Casey - Twenty Years Later", by Clarence P. McDonald (1908), imagines a different redemption for Casey, long after his retirement. The poem, which was indeed published twenty years after the original, in the San Francisco Examiner, sees Casey attending a championship game between the fictional team of "Bugville" and an unspecified opponent. In a losing effort, Bugville's players are benched and injured throughout the game, until the captain is forced to call for a volunteer from the attendees. An aged Casey answers the call and fills the role surprisingly well, culminating with him hitting the game-winning home run, in his first swing at bat. He then reveals his identity to the joyous fans and players.
+In response to the popularity of the 1946 Walt Disney animated adaptation, Disney made a sequel, Casey Bats Again (1954), in which Casey's nine daughters redeem his reputation.
+In 1988, on the 100th anniversary of the poem, Sports Illustrated writer Frank Deford constructed a fanciful story (later expanded to book form) for what happened before and after the famous ball game.
+
+Parodies
+Of the many parodies made of the poem, some of the notable ones include:
+Mad magazine republished the original version of the poem in the 1950s with artwork by Jack Davis and no alterations to the text. Later lampoons in Mad included "'Cool' Casey at the Bat" (1960), an interpretation of the poem in beatnik style, with artwork by Don Martin although the ending still has Casey striking out; "Casey at the Dice" in 1969, about a professional gambler; "Casey at the Contract Talks" in 1974 (which ends with the owner telling Casey to "practice hard at home this year 'cause now you've struck out twice"); Casey at the Talks" in 1977, a "modern" version of the famed poem in which Mudville tries unsuccessfully to sign free agent Casey [the last line of which is "Mighty Casey has held out"]; "Baseball at the Bat", a satire on baseball itself, "Howard at the Mike", about Howard Cosell; "Casey at the Byte" (1985), a tale of a cocky young computer expert who accidentally erases the White House Budget Plan; "Clooney as the Bat", a mockery of George Clooney's role as Batman in Batman and Robin; and in 2006 as "Barry at the Bat", poking fun at Barry Bonds' alleged involvement in the BALCO scandal; in 2001, "Jordan at the Hoop", satirizing Michael Jordan's return to the NBA and his time with the Washington Wizards; and in 2012, "Casey at the Trial", satirizing Casey Anthony's acquittal in the case of the death of her daughter Caylee. It also includes a "Poetry Round Robin" where famous poems are rewritten in the style of the next poet in line, featured Casey at the Bat as written by Edgar Allan Poe.
+Sportswriter Leonard Koppett claimed in a 1979 tongue-in-cheek article that the published poem omits 18 lines penned by Thayer, which changed the overall theme of the poem. Koppett added lines, claiming to have transcribed them off an old phonograph recording, that take the pitch count on Casey to full. Meanwhile, his uncle Arnold stirs up wagering action in the stands, before a wink passes between them. Casey throws the game.
+Foster Brooks ("the Lovable Lush" from the Dean Martin Show) wrote "Riley on the Mound", which recounts the story from the pitcher's perspective. 
+In his 1987 Baseball Abstract, Bill James published "Casey Chases A Knuckler", which employed a five-line stanza and AAAAB structure, about former MLB knuckleball pitcher Charlie Hough
+Author Phil Bolsta penned a parody entitled "Hrbek at the Bat" about Twins slugger Kent Hrbek which was published in 1987 in the Minneapolis Review of Baseball.
+Radio performer Garrison Keillor's parodic version of the poem reimagines the game as a road game, instead of a home game, for the Mudville team. The same events occur with Casey striking out in the ninth inning as in the original poem, but with everything told from the perspective of other team.
+An episode of Tiny Toon Adventures featured a short titled "Buster at the Bat", where Sylvester provides narration as Buster goes up to bat. The poem was parodied again for an episode of Animaniacs, this time with Wakko as the title character and Yakko narrating. Both versions end on a happier note with the main character hitting a home run.
+In the fourth season of Garfield and Friends the episode entitled "Mind Over Matter/Orson at the Bat/Multiple Choice Cartoon" features Wade Duck narrating a parody of the poem as Orson Pig experiences it in a dream sequence.
+In The Adventures of Jimmy Neutron: Boy Genius episode "Return of the Nanobots", Cindy's poem is identical to the ending of "Casey at the Bat" but replaces Mudville with Retroville and the last famed line with "cause Jimmy is an idiot!"
+The New York Times published a parody by Hart Seely and Frank Cammuso in which the poem was narrated by Phil Rizzuto, a New York Yankees announcer who was known to veer off on tangents while calling the game. The poem was later published in Seely and Cammuso's book, 2007 Eleven And Other American Comedies.
+David Pogue penned a parody version titled 'A Desktop Critic: Steven Saves the Mac' for Macworld magazine that ran in their October 1999 issue. It tells the story of Steve Jobs' triumphant return to a struggling Apple Inc and his early efforts to reverse the company's fortunes.
+Dick Flavin wrote a version titled Teddy at the Bat, after Boston Red Sox legend Ted Williams died in July 2002. Flavin performed the poem at Fenway Park during the night-long tribute to Williams done at the park later that month. The poem replaced Flynn and Blake with Bobby Doerr and Johnny Pesky, the batters who preceded Williams in the 1946 Red Sox lineup.
+In 2000, Michael J. Farrand adapted the rhyming scheme, tone, and theme of the poem—while reversing the outcome—to create his poem "The Man Who Gave All the Dreamers in Baseball Land Bigger Dreams to Dream" about Kirk Gibson's home run off Dennis Eckersley in Game 1 of the 1988 World Series.  The poem appears at the Baseball Almanac.
+Norman Jackman wrote a reversed-outcome version in 1951 called "Bobby Thomson at the Bat," which went unknown for over 60 years until the San Francisco Giants published it in 2012. It's about Thomson's famous home run in a 1951 Giant-Dodger playoff game.  In 2016, the poem was accepted into the poetry files of the National Baseball Library and Archive of the Hall of Fame.
+The New York Times best-selling author and poet laureate of The Ringer, Shea Serrano, penned a loving tribute to NBA player Gordon Hayward in the vein of "Casey at the Bat" in 2017.
+Canadian comedy duo Wayne and Shuster created "Shakespearean Baseball", featuring William Shakespeare-esque characters and dialogue in a skit based upon the poem. They performed the play on The Ed Sullivan Show and on Canadian TV numerous times between the 1950s and 1980s.
+Baseball writer and Villanova professor Mitchell Nathanson updated the poem for contemporary times in 2019, publishing "Casey @ the Bat" in The Washington Post.
+
+Translations
+There are three known translations of the poem into a foreign language, one in French, written in 2007 by French Canadian linguist Paul Laurendeau, with the title Casey au bâton, and two in Hebrew. One by the sports journalist Menachem Less titled "התור של קייסי לחבוט" [Hator Shel Casey Lachbot], and the other more recent and more true to the original cadence and style by Jason H. Elbaum called קֵיסִי בַּמַּחְבֵּט [Casey BaMachbayt].
+
+Names
+Casey Stengel describes in his autobiography how his original nickname "K.C." (for his hometown, Kansas City, Missouri) evolved into "Casey". It was influenced not just by the name of the poem, which was widely popular in the 1910s, but also because he tended to strike out frequently in his early career so fans and writers started calling him "strikeout Casey".
+
+Contemporary culture
+
+Video games
+The poem is referenced in the Super Nintendo Entertainment System game EarthBound, where a weapon is named the Casey Bat, which is the strongest weapon in the game, but will only hit 25% of the time.
+
+Television
+A recurring character in the Pokémon anime, a girl who is a very enthusiastic fan of baseball, is named "Casey" in the English version in reference to the poem.
+Season 1, episode 35 of The Twilight Zone was named "The Mighty Casey" in reference to the poem's lead character, though the plot is unrelated.
+The title of Season 3, episode 17 of The Simpsons, "Homer at the Bat", is a reference to the poem.
+A third-season episode of Storm Chasers was titled "Sean Casey At Bat". The episode featured Casey (a chaser) intercepting a tornado for the first time in TIV 2.
+In the show Friends, Ross clarifies how to spell "Casey" as in "at the bat" in the Season 2, episode 14 titled "The One with the Prom Video."
+In the show Containment, Season 1, episode 6 takes its name, "He Stilled the Rising Tumult", from the poem.
+Black Mirror season 6 episode 3 Beyond the Sea quotes the poem
+
+Theme parks
+Casey's Corner is a baseball-themed restaurant in Walt Disney World's Magic Kingdom, which serves primarily hotdogs. Pictures of Casey and the pitcher from the Disney animated adaptation are hanging on the walls, and a life-size statue of a baseball player identified as "Casey" stands just outside the restaurant. Additionally, the scoreboard in the restaurant shows that Mudville lost to the visitors by two runs.
+A hot dog restaurant featuring the Disney character can be found at Disneyland Paris' Disneyland Park since its opening in 1992, under the name Casey's Corner.
+A game called Casey at the Bat is in the Games of the Boardwalk at the Disneyland Resort's Disney California Adventure.
+
+Theatre
+In Cabaret (1993) Clifford Bradshaw recites the end of "Mighty Casey" to Sally Bowles.
+
+Postage stamp
+
+On July 11, 1996, the United States Postal Service issued a commemorative stamp depicting "Mighty Casey."  The stamp was part of a set commemorating American folk heroes.  Other stamps in the set depicted Paul Bunyan, John Henry, and Pecos Bill.
+
+References
+
+External links
+
+"Casey at the Bat" on MLB.com.
+.
+Library of Congress essay on its inclusion into the National Recording Registry.
+Casey at the Bat cylinder recording by Russell Hunting, from the Cylinder Audio Archive at the University of California, Santa Barbara Library.
+"Casey at the Bat" Web site with biographical details on Thayer, Hopper, Mike "King" Kelly and chronology of the poem's publication.
+"Casey at the Bat" as told in baseball cards
+"Casey at the Bat” and its Long Post-Game Show" an essay on its composition and legacy by Michael J. Astrue
+Poems about Casey's later life, including another by Grantland Rice, and one by Garrison Keillor
+ 
+ Caseyatthe.blog is a site dedicated to preserving and promoting the literary legacy of "Casey at the Bat" and the biography of "Casey's" author, Ernest Lawrence Thayer
+
+ 
+American poems
+Baseball poems
+Fictional baseball players
+American folklore
+1888 poems
+Works originally published in the San Francisco Examiner
+United States National Recording Registry recordings
+Poems adapted into films
+Sports poems
+2000 children's books
+Caldecott Honor-winning works
+American picture books
+The classical guitar, also called Spanish guitar, is a member of the guitar family used in classical music and other styles. An acoustic wooden string instrument with strings made of gut or nylon, it is a precursor of the modern steel-string acoustic and electric guitars, both of which use metal strings. Classical guitars derive from the Spanish vihuela and gittern of the 15th and 16th century. Those instruments evolved into the 17th and 18th-century baroque guitar—and by the mid-19th century, early forms of the modern classical guitar. Today's modern classical guitar was established by the late designs of the 19th-century Spanish luthier, Antonio Torres Jurado.
+
+For a right-handed player, the traditional classical guitar has 12 frets clear of the body and is properly held up by the left leg, so that the hand that plucks or strums the strings does so near the back of the sound hole (this is called the classical position). However, the right-hand may move closer to the fretboard to achieve different tonal qualities. The player typically holds the left leg higher by the use of a foot rest. The modern steel string guitar, on the other hand, usually has 14 frets clear of the body (see Dreadnought) and is commonly held with a strap around the neck and shoulder.
+
+The phrase "classical guitar" may refer to either of two concepts other than the instrument itself:
+ The instrumental finger technique common to classical guitar—individual strings plucked with the fingernails or, less frequently, fingertips
+ The instrument's classical music repertoire
+
+The term modern classical guitar sometimes distinguishes the classical guitar from older forms of guitar, which are in their broadest sense also called classical, or more specifically, early guitars. Examples of early guitars include the six-string early romantic guitar ( – 1880), and the earlier baroque guitars with five courses.
+
+The materials and the methods of classical guitar construction may vary, but the typical shape is either modern classical guitar or that historic classical guitar similar to the early romantic guitars of France and Italy. Classical guitar strings once made of gut are now made of materials such as nylon or fluoropolymers, typically with silver-plated copper fine wire wound about the acoustically lower (d-A-E in standard tuning) strings.
+
+A guitar family tree may be identified. The flamenco guitar derives from the modern classical, but has differences in material, construction and sound.
+
+Contexts
+The classical guitar has a long history and one is able to distinguish various:
+instruments
+repertoire (composers and their compositions, arrangements, improvisations)
+
+Both instrument and repertoire can be viewed from a combination of various perspectives:
+
+Historical (chronological period of time)
+Baroque guitar –  1600 to 1750
+Early romantic guitars –  1750 to 1850 (for music from the Classical and Romantic periods)
+Modern classical guitars
+Geographical
+Spanish guitars (Torres) and French guitars (René Lacôte, ...), French guitars (René Lacôte, ...), German guitars (Herrmann Hauser), etc.
+Cultural
+Baroque court music, nineteenth-century opera and its influences, nineteenth-century folk songs, Latin American music
+
+Historical perspective
+
+Early guitars
+
+While "classical guitar" is today mainly associated with the modern classical guitar design, there is an increasing interest in early guitars; and understanding the link between historical repertoire and the particular period guitar that was originally used to perform this repertoire. The musicologist and author Graham Wade writes:
+
+Nowadays it is customary to play this repertoire on reproductions of instruments authentically modelled on concepts of musicological research with appropriate adjustments to techniques and overall interpretation. Thus over recent decades we have become accustomed to specialist artists with expertise in the art of vihuela (a 16th-century type of guitar popular in Spain), lute, Baroque guitar, 19th-century guitar, etc.
+
+Different types of guitars have different sound aesthetics, e.g. different colour-spectrum characteristics (the way the sound energy is spread in the fundamental frequency and the overtones), different response, etc. These differences are due to differences in construction; for example, modern classical guitars usually use a different bracing (fan-bracing) from that used in earlier guitars (they had ladder-bracing); and a different voicing was used by the luthier.
+
+There is a historical parallel between musical styles (baroque, classical, romantic, flamenco, jazz) and the style of "sound aesthetic" of the musical instruments used, for example: Robert de Visée played a baroque guitar with a very different sound aesthetic from the guitars used by Mauro Giuliani and Luigi Legnani – they used 19th-century guitars. These guitars in turn sound different from the Torres models used by Segovia that are suited for interpretations of romantic-modern works such as Moreno Torroba.
+
+When considering the guitar from a historical perspective, the musical instrument used is as important as the musical language and style of the particular period. As an example: It is impossible to play a historically informed de Visee or Corbetta (baroque guitarist-composers) on a modern classical guitar. The reason is that the baroque guitar used courses, which are two strings close together (in unison), that are plucked together. This gives baroque guitars an unmistakable sound characteristic and tonal texture that is an integral part of an interpretation. Additionally, the sound aesthetic of the baroque guitar (with its strong overtone presence) is very different from modern classical type guitars, as is shown below.
+
+Today's use of Torres and post-Torres type guitars for repertoire of all periods is sometimes critically viewed: Torres and post-Torres style modern guitars (with their fan-bracing and design) have a thick and strong tone, very suitable for modern-era repertoire. However, they are considered to emphasize the fundamental too heavily (at the expense of overtone partials) for earlier repertoire (Classical/Romantic: Carulli, Sor, Giuliani, Mertz, ...; Baroque: de Visee, ...; etc.). "Andrés Segovia presented the Spanish guitar as a versatile model for all playing styles" to the extent, that still today, "many guitarists have tunnel-vision of the world of the guitar, coming from the modern Segovia tradition".
+
+While fan-braced modern classical Torres and post-Torres style instruments coexisted with traditional ladder-braced guitars at the beginning of the 20th century, the older forms eventually fell away. Some attribute this to the popularity of Segovia, considering him "the catalyst for change toward the Spanish design and the so-called 'modern' school in the 1920s and beyond." The styles of music performed on ladder-braced guitars were becoming unfashionable—and, e.g., in Germany, more musicians were turning towards folk music (Schrammel-music and the Contraguitar). This was localized in Germany and Austria and became unfashionable again. On the other hand, Segovia was playing concerts around the world, popularizing modern classical guitar—and, in the 1920s, Spanish romantic-modern style with guitar works by Moreno Torroba, de Falla, etc.
+
+The 19th-century classical guitarist Francisco Tárrega first popularized the Torres design as a classical solo instrument. However, some maintain that Segovia's influence led to its domination over other designs. Factories around the world began producing them in large numbers.
+
+Characteristics
+Vihuela, renaissance guitars and baroque guitars have a bright sound, rich in overtones, and their courses (double strings) give the sound a very particular texture.
+Early guitars of the classical and romantic period (early romantic guitars) have single strings, but their design and voicing are still such that they have their tonal energy more in the overtones (but without starved fundamental), giving a bright intimate tone.
+Later in Spain a style of music emerged that favoured a stronger fundamental:"With the change of music a stronger fundamental was demanded and the fan bracing system was approached. ... the guitar tone has been changed from a transparent tone, rich in higher partials to a more 'broad' tone with a strong fundamental."
+Thus modern guitars with fan bracing (fan strutting) have a design and voicing that gives them a thick, heavy sound, with far more tonal energy found in the fundamental.
+
+Style periods
+
+Renaissance
+Composers of the Renaissance period who wrote for four-course guitar include Alonso Mudarra, Miguel de Fuenllana, Adrian Le Roy, , Guillaume de Morlaye, and .
+Instrument
+Four-course guitar
+
+Baroque
+Some well known composers of the Baroque guitar were Gaspar Sanz, Robert de Visée, Francesco Corbetta and Santiago de Murcia.
+Examples of instruments
+Baroque guitar by Nicolas Alexandre Voboam II: This French instrument has the typical design of the period with five courses of double-strings and a flat back.
+Baroque guitar attributed to Matteo Sellas : This Italian instrument has five courses and a rounded back.
+
+Classical and romantic
+From approximately 1780 to 1850, the guitar had numerous composers and performers including:
+Filippo Gragnani (1767–1820)
+Antoine de Lhoyer (1768–1852)
+Ferdinando Carulli (1770–1841)
+Wenzel Thomas Matiegka (1773–1830)
+Francesco Molino (1774–1847)
+Fernando Sor (1778–1839)
+ ( – 1850)
+Mauro Giuliani (1781–1829)
+Niccolò Paganini (1782–1840)
+Dionisio Aguado (1784–1849)
+Luigi Legnani (1790–1877)
+Matteo Carcassi (1792–1853)
+Napoléon Coste (1805–1883)
+Johann Kaspar Mertz (1806–1856)
+Giulio Regondi (1822–1872)
+Hector Berlioz studied the guitar as a teenager; Franz Schubert owned at least two and wrote for the instrument; and Ludwig van Beethoven, after hearing Giuliani play, commented the instrument was "a miniature orchestra in itself". Niccolò Paganini was also a guitar virtuoso and composer. He once wrote: "I love the guitar for its harmony; it is my constant companion in all my travels". He also said, on another occasion: "I do not like this instrument, but regard it simply as a way of helping me to think."
+
+Francisco Tárrega
+The guitarist and composer Francisco Tárrega (November 21, 1852 – December 15, 1909) was one of the great guitar virtuosos and teachers and is considered the father of modern classical guitar playing. As a professor of guitar at the conservatories of Madrid and Barcelona, he defined many elements of the modern classical technique and elevated the importance of the guitar in the classical music tradition.
+
+Modern period
+At the beginning of the 1920s, Andrés Segovia popularized the guitar with tours and early phonograph recordings. Segovia collaborated with the composers Federico Moreno Torroba and Joaquín Turina with the aim of extending the guitar repertoire with new music. Segovia's tour of South America revitalized public interest in the guitar and helped the guitar music of Manuel Ponce and Heitor Villa-Lobos reach a wider audience. The composers Alexandre Tansman and Mario Castelnuovo-Tedesco were commissioned by Segovia to write new pieces for the guitar. Luiz Bonfá popularized Brazilian musical styles such as the newly created Bossa Nova, which was well received by audiences in the USA.
+
+"New music" – avant-garde
+The classical guitar repertoire also includes modern contemporary works – sometimes termed "New Music" – such as Elliott Carter's Changes, Cristóbal Halffter's Codex I, Luciano Berio's Sequenza XI, Maurizio Pisati's Sette Studi, Maurice Ohana's Si Le Jour Paraît, Sylvano Bussotti's Rara (eco sierologico), Ernst Krenek's Suite für Guitarre allein, Op. 164, Franco Donatoni's Algo: Due pezzi per chitarra, Paolo Coggiola's Variazioni Notturne, etc.
+
+Performers who are known for including modern repertoire include Jürgen Ruck, Elena Càsoli,  Leo Brouwer (when he was still performing), John Schneider, Reinbert Evers, Maria Kämmerling, Siegfried Behrend, David Starobin, Mats Scheidegger, Magnus Andersson, etc.
+
+This type of repertoire is usually performed by guitarists who have particularly chosen to focus on the avant-garde in their performances.
+
+Within the contemporary music scene itself, there are also works which are generally regarded as extreme. These include works such as Brian Ferneyhough's Kurze Schatten II, Sven-David Sandström's away from and Rolf Riehm's Toccata Orpheus etc. which are notorious for their extreme difficulty.
+
+There are also a variety of databases documenting modern guitar works such as Sheer Pluck and others.
+
+Background
+The evolution of the classical guitar and its repertoire spans more than four centuries. It has a history that was shaped by contributions from earlier instruments, such as the lute, the vihuela, and the baroque guitar.
+
+History
+
+Overview of the classical guitar's history
+The origins of the modern guitar are not known with certainty. Some believe it is indigenous to Europe, while others think it is an imported instrument. Guitar-like instruments appear in ancient carvings and statues recovered from Egyptian, Sumerian, and Babylonian civilizations. This means that contemporary Iranian instruments such as the tanbur and setar are distantly related to the European guitar, as they all derive ultimately from the same ancient origins, but by very different historical routes and influences. The time where the most changes were made to the guitar was in the 1500s to the 1800s but during the late Middle Ages, gitterns called "guitars" were in use, but their construction and tuning were different from modern guitars. The guitarra latina in Spain had curved sides and a single hole. The guitarra morisca, which appears to have had Moorish influences, had an oval soundbox and many sound holes on its soundboard. By the 15th century, a four-course double-string instrument called the vihuela de mano, which was tuned like the later modern guitar except on one string and similar construction, first appeared in Spain and spread to France and Italy. In the 16th century, a fifth double-string was added. During this time, composers wrote mostly in tablature notation. In the middle of the 16th century, influences from the vihuela and the Renaissance guitar were combined and the baroque five-string guitar appeared in Spain. The baroque guitar quickly superseded the vihuela in popularity in Spain, France and Italy and Italian players and composers became prominent. In the late 18th century the six-string guitar quickly became popular at the expense of the five-string guitars. During the 19th century, the Spanish luthier and player Antonio de Torres gave the modern classical guitar its definitive form, with a broadened body, increased waist curve, thinned belly, and improved internal bracing. The modern classical guitar replaced an older form for the accompaniment of song and dance called flamenco, and a modified version, known as the flamenco guitar, was created.
+
+Renaissance guitar
+
+Alonso de Mudarra's book Tres Libros de Música, published in Spain in 1546, contains the earliest known written pieces for a four-course guitarra. This four-course "guitar" was popular in France, Spain, and Italy. In France this instrument gained popularity among aristocrats. A considerable volume of music was published in Paris from the 1550s to the 1570s: Simon Gorlier's Le Troysième Livre... mis en tablature de Guiterne was published in 1551. In 1551 Adrian Le Roy also published his Premier Livre de Tablature de Guiterne, and in the same year he also published Briefve et facile instruction pour apprendre la tablature a bien accorder, conduire, et disposer la main sur la Guiterne. Robert Ballard, Grégoire Brayssing from Augsburg, and Guillaume Morlaye ( – ) significantly contributed to its repertoire. Morlaye's Le Premier Livre de Chansons, Gaillardes, Pavannes, Bransles, Almandes, Fantasies – which has a four-course instrument illustrated on its title page – was published in partnership with Michel Fedenzat, and among other music, they published six books of tablature by lutenist Albert de Rippe (who was very likely Guillaume's teacher).
+
+Vihuela
+
+The written history of the classical guitar can be traced back to the early 16th century with the development of the vihuela in Spain. While the lute was then becoming popular in other parts of Europe, the Spaniards did not take to it well because of its association with the Moors. Instead, the lute-like vihuela appeared with two more strings that gave it more range and complexity. In its most developed form, the vihuela was a guitar-like instrument with six double strings made of gut, tuned like a modern classical guitar with the exception of the third string, which was tuned half a step lower. It has a high sound and is rather large to hold. Few have survived and most of what is known today come from diagrams and paintings.
+
+Baroque guitar
+
+"Early romantic guitar" or "Guitar during the Classical music era"
+
+The earliest extant six-string guitar is believed to have been built in 1779 by Gaetano Vinaccia (1759 – after 1831)  in Naples, Italy; however, the date on the label is a little ambiguous. The Vinaccia family of luthiers is known for developing the mandolin. This guitar has been examined and does not show tell-tale signs of modifications from a double-course guitar.
+The authenticity of guitars allegedly produced before the 1790s is often in question. This also corresponds to when Moretti's 6-string method appeared, in 1792.
+
+Modern classical guitar
+
+The modern classical guitar was developed in the 19th century by Antonio de Torres Jurado, Ignacio Fleta, Hermann Hauser Sr., and Robert Bouchet. Earlier similar instruments include the Spanish vihuela and gittern of the 15th and 16th century. Those instruments evolved into the 17th and 18th-century baroque guitar—and by the mid-19th century, early forms of the modern classical guitar.
+
+Technique
+The fingerstyle is used fervently on the modern classical guitar. The thumb traditionally plucks the bass – or root note – whereas the fingers ring the melody and its accompanying parts. Often classical guitar technique involves the use of the nails of the right hand to pluck the notes. Noted players were: Francisco Tárrega, Emilio Pujol, Andrés Segovia, Julian Bream, Agustín Barrios, and John Williams (guitarist).
+
+Performance
+
+The modern classical guitar is usually played in a seated position, with the instrument resting on the left lap – and the left foot placed on a footstool. Alternatively – if a footstool is not used – a guitar support can be placed between the guitar and the left lap (the support usually attaches to the instrument's side with suction cups). (There are of course exceptions, with some performers choosing to hold the instrument another way.)
+
+Right-handed players use the fingers of the right hand to pluck the strings, with the thumb plucking from the top of a string downwards (downstroke) and the other fingers plucking from the bottom of the string upwards (upstroke). The little finger in classical technique as it evolved in the 20th century is used only to ride along with the ring finger without striking the strings and to thus physiologically facilitate the ring finger's motion.
+
+In contrast, Flamenco technique, and classical compositions evoking Flamenco, employ the little finger semi-independently in the Flamenco four-finger rasgueado, that rapid strumming of the string by the fingers in reverse order employing the back of the fingernail—a familiar characteristic of Flamenco.
+
+Flamenco technique, in the performance of the rasgueado also uses the upstroke of the four fingers and the downstroke of the thumb: the string is hit not only with the inner, fleshy side of the fingertip but also with the outer, fingernail side. This was also used in a technique of the vihuela called dedillo which has recently begun to be introduced on the classical guitar.
+
+Some modern guitarists, such as Štěpán Rak and Kazuhito Yamashita, use the little finger independently, compensating for the little finger's shortness by maintaining an extremely long fingernail.  Rak and Yamashita have also generalized the use of the upstroke of the four fingers and the downstroke of the thumb (the same technique as in the rasgueado of the Flamenco: as explained above the string is hit not only with the inner, fleshy side of the fingertip but also with the outer, fingernail side) both as a free stroke and as a rest stroke.
+
+Direct contact with strings
+As with other plucked instruments (such as the lute), the musician directly touches the strings (usually plucking) to produce the sound. This has important consequences: Different tone/timbre (of a single note) can be produced by plucking the string in different manners (apoyando or tirando)  and in different positions (such as closer and further away from the guitar bridge). For example, plucking an open string will sound brighter than playing the same note(s) on a fretted position (which would have a warmer tone).
+
+The instrument's versatility means it can create a variety of tones, but this finger-picking style also makes the instrument harder to learn than a standard acoustic guitar's strumming technique.
+
+Fingering notation 
+
+In guitar scores the five fingers of the right-hand (which pluck the strings) are designated by the first letter of their Spanish names namely p = thumb (pulgar), i = index finger (índice), m = middle finger (mayor), a = ring finger (anular), c = little finger or pinky (meñique/chiquito)
+
+The four fingers of the left hand (which fret the strings) are designated 1 = index, 2 = major, 3 = ring finger, 4 = little finger. 0 designates an open string—a string not stopped by a finger and whose full length thus vibrates when plucked. It is rare to use the left hand thumb in performance, the neck of a classical guitar being too wide for comfort, and normal technique keeps the thumb behind the neck. However Johann Kaspar Mertz, for example, is notable for specifying the thumb to fret bass notes on the sixth string, notated with an up arrowhead (⌃).
+
+Scores (contrary to tablatures) do not systematically indicate the string to pluck (though the choice is usually obvious). When indicating the string is useful, the score uses the numbers 1 to 6 inside circles (highest-pitch sting to lowest).
+
+Scores do not systematically indicate fretboard positions (where to put the first finger of the fretting hand), but when helpful (mostly with barrés chords) the score indicates positions with Roman numerals from the first position I (index finger on the 1st fret: F-B flat-E flat-A flat-C-F) to the twelfth position XII (index finger on the 12th fret: E-A-D-G-B-E. The 12th fret is where the body begins) or even higher up to position XIX (the classical guitar most often having 19 frets, with the 19th fret being most often split and not being usable to fret the 3rd and 4th strings).
+
+Alternation 
+To achieve tremolo effects and rapid, fluent scale passages, the player must practice alternation, that is, never plucking a string with the same finger twice in a row. 
+Using p to indicate the thumb, i the index finger, m the middle finger and a the ring finger, common alternation patterns include:
+ i-m-i-m : Basic melody line on the treble strings. Has the appearance of "walking along the strings". This is often used for playing Scale (music) passages.
+ p-i-m-a-i-m-a : Arpeggio pattern example. However, there are many arpeggio patterns incorporated into the classical guitar repertoire.
+ p-a-m-i-p-a-m-i : Classical guitar tremolo pattern.
+ p-m-p-m : A way of playing a melody line on the lower strings.
+
+Repertoire
+
+Music written specifically for the classical guitar dates from the addition of the sixth string (the baroque guitar normally had five pairs of strings) in the late 18th century.
+
+A guitar recital may include a variety of works, e.g., works written originally for the lute or vihuela by composers such as John Dowland (b. England 1563) and Luis de Narváez (b. Spain ), and also music written for the harpsichord by Domenico Scarlatti (b. Italy 1685), for the baroque lute by Sylvius Leopold Weiss (b. Germany 1687), for the baroque guitar by Robert de Visée (b. France ) or even Spanish-flavored music written for the piano by Isaac Albéniz (b. Spain 1860) and Enrique Granados (b. Spain 1867). The most important composer who did not write for the guitar but whose music is often played on it is Johann Sebastian Bach (b. Germany 1685), whose baroque lute works have proved highly adaptable to the instrument.
+
+Of music written originally for guitar, the earliest important composers are from the classical period and include Fernando Sor (b. Spain 1778) and Mauro Giuliani (b. Italy 1781), both of whom wrote in a style strongly influenced by Viennese classicism. In the 19th-century guitar composers such as Johann Kaspar Mertz (b. Slovakia, Austria 1806) were strongly influenced by the dominance of the piano. Not until the end of the nineteenth century did the guitar begin to establish its own unique identity. Francisco Tárrega (b. Spain 1852) was central to this, sometimes incorporating stylized aspects of flamenco's Moorish influences into his romantic miniatures.  This was part of late 19th century mainstream European musical nationalism. Albéniz and Granados were central to this movement; their evocation of the guitar was so successful that their compositions have been absorbed into the standard guitar repertoire.
+
+The steel-string and electric guitars characteristic to the rise of rock and roll in the post-WWII era became more widely played in North America and the English-speaking world. Agustín Barrios Mangoré of Paraguay composed many works and brought into the mainstream the characteristics of Latin American music, as did the Brazilian composer Heitor Villa-Lobos. Andrés Segovia commissioned works from Spanish composers such as Federico Moreno Torroba and Joaquín Rodrigo, Italians such as Mario Castelnuovo-Tedesco and Latin American composers such as Manuel Ponce of Mexico. Other prominent Latin American composers are Leo Brouwer of Cuba, Antonio Lauro of Venezuela and Enrique Solares of Guatemala. Julian Bream of Britain managed to get nearly every British composer from William Walton and Benjamin Britten to Peter Maxwell Davies to write significant works for guitar. Bream's collaborations with tenor Peter Pears also resulted in song cycles by Britten, Lennox Berkeley and others. There are significant works by composers such as Hans Werner Henze of Germany, Gilbert Biberian of England and Roland Chadwick of Australia.
+
+The classical guitar also became widely used in popular music and rock & roll in the 1960s after guitarist Mason Williams popularized the instrument in his instrumental hit Classical Gas. Guitarist Christopher Parkening is quoted in the book Classical Gas: The Music of Mason Williams as saying that it is the most requested guitar piece besides Malagueña and perhaps the best-known instrumental guitar piece today.
+In the field of New Flamenco, the works and performances of Spanish composer and player Paco de Lucía are known worldwide.
+
+Not many classical guitar concertos were written through history. Nevertheless, some guitar concertos are nowadays widely known and popular, especially Joaquín Rodrigo's Concierto de Aranjuez (with the famous theme from 2nd movement) and Fantasía para un gentilhombre. Composers, who also wrote famous guitar concertos are: Antonio Vivaldi (originally for mandolin or lute), Mauro Giuliani, Heitor Villa-Lobos, Mario Castelnuovo-Tedesco, Manuel Ponce, Leo Brouwer, Lennox Berkeley and Malcolm Arnold. 
+Nowadays, more and more contemporary composers decide to write a guitar concerto, among them Bosco Sacro by Federico Biscione, for guitar and string orchestra, is one of the most inspired.
+
+Physical characteristics
+The classical guitar is distinguished by a number of characteristics:
+It is an acoustic instrument. The sound of the plucked string is amplified by the soundboard and resonant cavity of the guitar.
+It has six strings, though some classical guitars have seven or more strings.
+All six strings are made from nylon, or nylon wrapped with metal, as opposed to the metal strings found on other acoustic guitars. Nylon strings also have a much lower tension than steel strings, as do the predecessors to nylon strings, gut strings (made from ox or sheep gut). The lower three strings ('bass strings') are wound with metal, commonly silver-plated copper.
+Because of the low string tension
+ The neck can be made entirely of wood without a steel truss rod
+ The interior bracing can be lighter
+Typical modern six-string classical guitars are 48–54 mm wide at the nut, compared to around 42 mm for electric guitars.
+ Classical fingerboards are normally flat and without inlaid fret markers, or just have dot inlays on the side of the neck—steel string fingerboards usually have a slight radius and inlays.
+Classical guitarists use their right hand to pluck the strings. Players may shape their fingernails for a brighter tone and feel against the strings.
+Strumming is a less common technique in classical guitar, and is often referred to by the Spanish term "rasgueo", or for strumming patterns "rasgueado", and uses the backs of the fingernails. Rasgueado is integral to Flamenco guitar.
+Machine heads at the headstock of a classical guitar point backwards—in contrast to most steel-string guitars, which have machine heads that point outward.
+The overall design of a Classical Guitar is very similar to the slightly lighter and smaller Flamenco guitar.
+
+Parts
+
+Parts of typical classical guitars include:
+
+ Headstock
+ Nut
+ Machine heads (or pegheads, tuning keys, tuning machines, tuners)
+ Frets
+ Neck
+ Heel
+ Body
+ Bridge
+ Bottom deck
+ Soundboard
+ Body sides
+ Sound hole, with rosette inlay
+ Strings
+ Saddle (Bridge nut)
+ Fretboard
+
+Fretboard
+The fretboard (also called the fingerboard) is a piece of wood embedded with metal frets that constitutes the top of the neck. It is flat or slightly curved. The curvature of the fretboard is measured by the fretboard radius, which is the radius of a hypothetical circle of which the fretboard's surface constitutes a segment. The smaller the fretboard radius, the more noticeably curved the fretboard is. Fretboards are most commonly made of ebony, but may also be made of rosewood, some other hardwood, or of phenolic composite ("micarta").
+
+Frets
+
+Frets are the metal strips (usually nickel alloy or stainless steel) embedded along the fingerboard and placed at points that divide the length of string mathematically. The strings' vibrating length is determined when the strings are pressed down behind the frets. Each fret produces a different pitch and each pitch spaced a half-step apart on the 12 tone scale. The ratio of the widths of two consecutive frets is the twelfth root of two (), whose numeric value is about 1.059463. The twelfth fret divides the string into two exact halves and the 24th fret (if present) divides the string in half yet again. Every twelve frets represents one octave. This arrangement of frets results in equal tempered tuning.
+
+Neck
+
+A classical guitar's frets, fretboard, tuners, headstock, all attached to a long wooden extension, collectively constitute its neck. The wood for the fretboard usually differs from the wood in the rest of the neck. The bending stress on the neck is considerable, particularly when heavier gauge strings are used. The most common scale length for classical guitar is 650mm (calculated by measuring the distance between the end of the nut and the center of the 12th fret, then doubling that measurement). However, scale lengths may vary from 635-664mm or more.
+
+Neck joint or 'heel'
+This is the point where the neck meets the body. In the traditional Spanish neck joint, the neck and block are one piece with the sides inserted into slots cut in the block. Other necks are built separately and joined to the body either with a dovetail joint, mortise or flush joint. These joints are usually glued and can be reinforced with mechanical fasteners. Recently many manufacturers use bolt-on fasteners. Bolt-on neck joints were once associated only with less expensive instruments but now some top manufacturers and hand builders are using variations of this method. Some people believed that the Spanish-style one piece neck/block and glued dovetail necks have better sustain, but testing has failed to confirm this.
+While most traditional Spanish style builders use the one-piece neck/heel block, Fleta, a prominent Spanish builder, used a dovetail joint due to the influence of his early training in violin making.
+One reason for the introduction of mechanical joints was to make it easier to repair necks. This is more of a problem with steel string guitars than with nylon strings, which have about half the string tension. This is why nylon string guitars often do not include a truss rod either.
+
+Body
+The body of the instrument is a major determinant of the overall sound variety for acoustic guitars. The guitar top, or soundboard, is a finely crafted and engineered element often made of spruce or red cedar. Considered the most prominent factor in determining the sound quality of a guitar, this thin (often 2 or 3 mm thick) piece of wood has a uniform thickness and is strengthened by different types of internal bracing. The back is made in rosewood and Brazilian rosewood is especially coveted, but mahogany or other decorative woods are sometimes used.
+
+The majority of the sound is caused by the vibration of the guitar top as the energy of the vibrating strings is transferred to it. Different patterns of wood bracing have been used through the years by luthiers (Torres, Hauser, Ramírez, Fleta, and C.F. Martin being among the most influential designers of their times); to not only strengthen the top against collapsing under the tremendous stress exerted by the tensioned strings, but also to affect the resonance of the top. Some contemporary guitar makers have introduced new construction concepts such as "double-top" consisting of two extra-thin wooden plates separated by Nomex, or carbon-fiber reinforced lattice – pattern bracing. The back and sides are made out of a variety of woods such as mahogany, maple, cypress Indian rosewood and highly regarded Brazilian rosewood (Dalbergia nigra). Each one is chosen for its aesthetic effect and structural strength, and such choice can also play a role in determining the instrument's timbre. These are also strengthened with internal bracing, and decorated with inlays and purfling.
+Antonio de Torres Jurado proved that it was the top, and not the back and sides of the guitar that gave the instrument its sound, in 1862 he built a guitar with back and sides of papier-mâché. (This guitar resides in the Museu de la Musica in Barcelona, and before the year 2000 it was restored to playable condition by the brothers Yagüe, Barcelona). 
+The body of a classical guitar is a resonating chamber that projects the vibrations of the body through a sound hole, allowing the acoustic guitar to be heard without amplification. The sound hole is normally a single round hole in the top of the guitar (under the strings), though some have different placement, shapes, or numbers of holes. How much air an instrument can move determines its maximum volume.
+
+Binding, purfling and kerfing
+The top, back and sides of a classical guitar body are very thin, so a flexible piece of wood called kerfing (because it is often scored, or kerfed so it bends with the shape of the rim) is glued into the corners where the rim meets the top and back. This interior reinforcement provides 5 to 20 mm of solid gluing area for these corner joints.
+
+During final construction, a small section of the outside corners is carved or routed out and filled with binding material on the outside corners and decorative strips of material next to the binding, which are called purfling. This binding serves to seal off the endgrain of the top and back. Binding and purfling materials are generally made of either wood or high-quality plastic materials.
+
+Bridge
+The main purpose of the bridge on a classical guitar is to transfer the vibration from the strings to the soundboard, which vibrates the air inside of the guitar, thereby amplifying the sound produced by the strings. The bridge holds the strings in place on the body. Also, the position of the saddle, usually a strip of bone or plastic that supports the strings off the bridge, determines the distance to the nut (at the top of the fingerboard).
+
+Sizes
+The modern full-size classical guitar has a scale length of around , with an overall instrument length of . The scale length has remained quite consistent since it was chosen by the originator of the instrument, Antonio de Torres. This length may have been chosen because it's twice the length of a violin string. As the guitar is tuned to one octave below that of the violin, the same size gut could be used for the first strings of both instruments.
+
+Smaller-scale instruments are produced to assist children in learning the instrument as the smaller scale leads to the frets being closer together, making it easier for smaller hands. The scale-size for the smaller guitars is usually in the range , with an instrument length of . Full-size instruments are sometimes referred to as 4/4, while the smaller sizes are 3/4, 1/2 or 1/4.
+
+Tuning
+
+A variety of different tunings are used. The most common by far, which one could call the "standard tuning" is:
+eI – b – g – d – A – E
+
+The above order is the tuning from the 1st string (highest-pitched string e'—spatially the bottom string in playing position) to the 6th string – lowest-pitched string E—spatially the upper string in playing position, and hence comfortable to pluck with the thumb.
+
+The explanation for this "asymmetrical" tuning (in the sense that the maj 3rd is not between the two middle strings, as in the tuning of the viola da gamba) is probably that the guitar originated as a 4-string instrument (actually an instrument with 4 double courses of strings, see above) with a maj 3rd between the 2nd and 3rd strings, and it only became a 6-string instrument by gradual addition of a 5th string and then a 6th string tuned a 4th apart:
+
+"The development of the modern tuning can be traced in stages. One of the tunings from the 16th century is C-F-A-D. This is equivalent to the top four strings of the modern guitar tuned a tone lower. However, the absolute pitch for these notes is not equivalent to modern "concert pitch". The tuning of the four-course guitar was moved up by a tone and toward the end of the 16th century, five-course instruments were in use with an added lower string tuned to A. This produced A-D-G-B-E, one of a wide number of variant tunings of the period. The low E string was added during the 18th century."
+
+This tuning is such that neighboring strings are at most 5 semitones apart.
+There are also a variety of commonly used alternate tunings. The most common is known as Drop D tuning which has the 6th string tuned down from an E to a D.
+
+Bibliography
+The Guitar and its Music (From the Renaissance to the Classical Era) (2007) by James Tyler, Paul Sparks. 
+Cambridge Studies in Performance Practice (No. 6): Performance on Lute, Guitar, and Vihuela (2005) edited by Victor Anand Coelho. 
+The Guitar: From the Renaissance to the Present Day by Harvey Turnbull; published by Bold Strummer, 1991. 
+The Guitar; by Sinier de Ridder; published by Edizioni Il Salabue; 
+La Chitarra, Quattro secoli di Capolavori (The Guitar: Four centuries of Masterpieces) by Giovanni Accornero, Ivan Epicoco, Eraldo Guerci; published by Edizioni Il Salabue
+Rosa sonora – Esposizione di chitarre XVII – XX secolo by Giovanni Accornero; published by Edizioni Il Salabue
+Lyre-guitar. Étoile charmante, between the 18th and 19th century by Eleonora Vulpiani
+Summerfield, Maurice, The Classical Guitar: Its Evolution, Players and Personalities since 1800 – 5th Edition, Blaydon : Ashley Mark Publishing Company, 2002.
+Various, Classical Guitar Magazine, Blaydon : Ashley Mark Publishing Company, monthly publication first published in 1982.
+Wade, Graham, Traditions of the Classical Guitar, London : Calder, 1980.
+Antoni Pizà: Francesc Guerau i el seu temps (Palma de Mallorca: Govern de les Illes Balears, Conselleria d'Educació i Cultura, Direcció General de Cultura, Institut d'Estudis Baleàrics, 2000)
+
+See also
+
+Classical guitar strings
+Classical guitar pedagogy
+Early classical guitar recordings
+International classical guitar competitions
+ Guitar Foundation of America
+Guitar
+Chordophones
+Typaldos D. children's choir, a Greek children's choir with classical guitars
+
+Related instruments
+Brahms guitar
+Extended-range classical guitar
+Harp guitar
+Lyre-guitar
+Six-string alto guitar
+
+Lists
+ Bibliography of classical guitar
+ List of classical guitarists
+ List of composers for the classical guitar
+ List of composers for the classical guitar (nationality)
+
+References
+
+External links
+
+Thematic essay: The guitar Jayson Kerr Dobney, Wendy Powers (The Metropolitan Museum of Art)
+Classical & Fingerstyle Guitar
+Classical Guitar Library A vibrant library of guitar sheet music, which can serve in accomplishing diverse teaching and research needs.
+
+ 
+
+Acoustic guitars
+String instruments
+Articles containing video clips
+Spanish inventions
+Clive Staples Lewis,  (29 November 1898 – 22 November 1963) was a British writer, literary scholar, and Anglican lay theologian. He held academic positions in English literature at both Magdalen College, Oxford (1925–1954), and Magdalene College, Cambridge (1954–1963). He is best known as the author of The Chronicles of Narnia, but he is also noted for his other works of fiction, such as The Screwtape Letters and The Space Trilogy, and for his non-fiction Christian apologetics, including Mere Christianity, Miracles, and The Problem of Pain.
+
+Lewis was a close friend of J. R. R. Tolkien, author of The Lord of the Rings. Both men served on the English faculty at Oxford University and were active in the informal Oxford literary group known as the Inklings. According to Lewis's 1955 memoir Surprised by Joy, he was baptized in the Church of Ireland but fell away from his faith during adolescence. Lewis returned to Anglicanism at the age of 32, owing to the influence of Tolkien and other friends, and he became an "ordinary layman of the Church of England". Lewis's faith profoundly affected his work, and his wartime radio broadcasts on the subject of Christianity brought him wide acclaim.
+
+Lewis wrote more than 30 books which have been translated into more than 30 languages and have sold millions of copies. The books that make up The Chronicles of Narnia have sold the most and have been popularized on stage, TV, radio, and cinema. His philosophical writings are widely cited by Christian scholars from many denominations.
+
+In 1956, Lewis married American writer Joy Davidman; she died of cancer four years later at the age of 45. Lewis died on 22 November 1963 from kidney failure, one week before his 65th birthday. In 2013, on the 50th anniversary of his death, Lewis was honoured with a memorial in Poets' Corner in Westminster Abbey.
+
+Biography
+
+Childhood
+
+Clive Staples Lewis was born in Belfast in Ulster, Ireland (before partition), on 29 November 1898. His father was Albert James Lewis (1863–1929), a solicitor whose father Richard Lewis had come to Ireland from Wales during the mid-19th century. Lewis's mother was Florence Augusta Lewis  Hamilton (1862–1908), known as Flora, the daughter of Thomas Hamilton, a Church of Ireland priest, and the great-granddaughter of both Bishop Hugh Hamilton and John Staples. Lewis had an elder brother,  Warren Hamilton Lewis (known as "Warnie"). He was baptized on 29 January 1899 by his maternal grandfather in St Mark's Church, Dundela.
+
+When his dog Jacksie was killed by a car, the four-year old Lewis adopted the name Jacksie. At first, he would answer to no other name, but later accepted Jack, the name by which he was known to friends and family for the rest of his life. When he was seven, his family moved into "Little Lea", the family home of his childhood, in the Strandtown area of East Belfast.
+
+As a boy, Lewis was fascinated with anthropomorphic animals; he fell in love with Beatrix Potter's stories and often wrote and illustrated his own animal tales. Along with his brother Warnie, he created the world of Boxen, a fantasy land inhabited and run by animals. Lewis loved to read from an early age. His father's house was filled with books; he later wrote that finding something to read was as easy as walking into a field and "finding a new blade of grass".
+
+Lewis was schooled by private tutors until age nine, when his mother died in 1908 from cancer. His father then sent him to England to live and study at Wynyard School in Watford, Hertfordshire. Lewis's brother had enrolled there three years previously. Not long after, the school was closed due to a lack of pupils. Lewis then attended Campbell College in the east of Belfast about a mile from his home, but left after a few months due to respiratory problems.
+
+He was then sent back to England to the health-resort town of Malvern, Worcestershire, where he attended the preparatory school Cherbourg House, which Lewis referred to as "Chartres" in his autobiography. It was during this time that he abandoned the Christianity he was taught as a child and became an atheist. During this time he also developed a fascination with European mythology and the occult.
+
+In September 1913, Lewis enrolled at Malvern College, where he remained until the following June. He found the school socially competitive. After leaving Malvern, he studied privately with William T. Kirkpatrick, his father's old tutor and former headmaster of Lurgan College.
+
+As a teenager, Lewis was wonderstruck by the songs and legends of what he called Northernness, the ancient literature of Scandinavia preserved in the Icelandic sagas. These legends intensified an inner longing that he would later call "joy". He also grew to love nature; its beauty reminded him of the stories of the North, and the stories of the North reminded him of the beauties of nature. His teenage writings moved away from the tales of Boxen, and he began experimenting with different art forms such as epic poetry and opera to try to capture his new-found interest in Norse mythology and the natural world.
+
+Studying with Kirkpatrick ("The Great Knock", as Lewis afterward called him) instilled in him a love of Greek literature and mythology and sharpened his debate and reasoning skills. In 1916, Lewis was awarded a scholarship at University College, Oxford.
+
+"My Irish life"
+
+Lewis experienced a certain cultural shock on first arriving in England: "No Englishman will be able to understand my first impressions of England," Lewis wrote in Surprised by Joy. "The strange English accents with which I was surrounded seemed like the voices of demons. But what was worst was the English landscape ... I have made up the quarrel since; but at that moment I conceived a hatred for England which took many years to heal."
+
+From boyhood, Lewis had immersed himself in Norse and Greek mythology, and later in Irish mythology and literature. He also expressed an interest in the Irish language, though there is not much evidence that he laboured to learn it. He developed a particular fondness for W. B. Yeats, in part because of Yeats's use of Ireland's Celtic heritage in poetry. In a letter to a friend, Lewis wrote, "I have here discovered an author exactly after my own heart, whom I am sure you would delight in, W. B. Yeats. He writes plays and poems of rare spirit and beauty about our old Irish mythology."
+
+In 1921, Lewis met Yeats twice, since Yeats had moved to Oxford. Lewis was surprised to find his English peers indifferent to Yeats and the Celtic Revival movement, and wrote: "I am often surprised to find how utterly ignored Yeats is among the men I have met: perhaps his appeal is purely Irish – if so, then thank the gods that I am Irish." Early in his career, Lewis considered sending his work to the major Dublin publishers, writing: "If I do ever send my stuff to a publisher, I think I shall try Maunsel, those Dublin people, and so tack myself definitely onto the Irish school."
+
+After his conversion to Christianity, his interests gravitated towards Christian theology and away from pagan Celtic mysticism (as opposed to Celtic Christian mysticism).
+
+Lewis occasionally expressed a somewhat tongue-in-cheek chauvinism towards the English. Describing an encounter with a fellow Irishman, he wrote: "Like all Irish people who meet in England, we ended by criticisms on the invincible flippancy and dullness of the Anglo-Saxon race. After all, there is no doubt, ami, that the Irish are the only people: with all their faults, I would not gladly live or die among another folk." Throughout his life, he sought out the company of other Irish people living in England and visited Northern Ireland regularly. In 1958 he spent his honeymoon there at the Old Inn, Crawfordsburn, which he called "my Irish life".
+
+Various critics have suggested that it was Lewis's dismay over the sectarian conflict in his native Belfast which led him to eventually adopt such an ecumenical brand of Christianity. As one critic has said, Lewis "repeatedly extolled the virtues of all branches of the Christian faith, emphasising a need for unity among Christians around what the Catholic writer  called 'Mere Christianity', the core doctrinal beliefs that all denominations share". On the other hand, Paul Stevens of the University of Toronto has written that "Lewis' mere Christianity masked many of the political prejudices of an old-fashioned Ulster Protestant, a native of middle-class Belfast for whom British withdrawal from Northern Ireland even in the 1950s and 1960s was unthinkable."
+
+First World War and Oxford University
+
+Lewis entered Oxford in the 1917 summer term, studying at University College, and shortly after, he joined the Officers' Training Corps at the university as his "most promising route into the army". From there, he was drafted into a Cadet Battalion for training. After his training, he was commissioned into the 3rd Battalion of the Somerset Light Infantry of the British Army as a Second Lieutenant, and was later transferred to the 1st Battalion of the regiment, then serving in France (he would not remain with the 3rd Battalion as it moved to Northern Ireland). Within months of entering Oxford, he was shipped by the British Army to France to fight in the First World War.
+
+On his 19th birthday (29 November 1917), Lewis arrived at the front line in the Somme Valley in France, where he experienced trench warfare for the first time. On 15 April 1918, as 1st Battalion, Somerset Light Infantry assaulted the village of Riez du Vinage in the midst of the German spring offensive, Lewis was wounded and two of his colleagues were killed by a British shell falling short of its target. He was depressed and homesick during his convalescence and, upon his recovery in October, he was assigned to duty in Andover, England. He was demobilized in December 1918 and soon restarted his studies. In a later letter, Lewis stated that his experience of the horrors of war, along with the loss of his mother and unhappiness in school, were the basis of his pessimism and atheism.
+
+After Lewis returned to Oxford University, he received a First in Honour Moderations (Greek and Latin literature) in 1920, a First in Greats (Philosophy and Ancient History) in 1922, and a First in English in 1923. In 1924 he became a Philosophy tutor at University College and, in 1925, was elected a Fellow and Tutor in English Literature at Magdalen College, where he served for 29 years until 1954.
+
+Janie Moore
+During his army training, Lewis shared a room with another cadet, Edward Courtnay Francis "Paddy" Moore (1898–1918). Maureen Moore, Paddy's sister, said that the two made a mutual pact that if either died during the war, the survivor would take care of both of their families. Paddy was killed in action in 1918 and Lewis kept his promise. Paddy had earlier introduced Lewis to his mother, Janie King Moore, and a friendship quickly sprang up between Lewis, who was 18 when they met, and Janie, who was 45. The friendship with Moore was particularly important to Lewis while he was recovering from his wounds in hospital, as his father did not visit him.
+
+Lewis lived with and cared for Moore until she was hospitalized in the late 1940s. He routinely introduced her as his mother, referred to her as such in letters, and developed a deeply affectionate friendship with her. Lewis's own mother had died when he was a child, while his father was distant, demanding, and eccentric.
+
+Speculation regarding their relationship resurfaced with the 1990 publication of A. N. Wilson's biography of Lewis. Wilson (who never met Lewis) attempted to make a case for their having been lovers for a time. Wilson's biography was not the first to address the question of Lewis's relationship with Moore. George Sayer knew Lewis for 29 years, and he had sought to shed light on the relationship during the period of 14 years before Lewis's conversion to Christianity. In his biography Jack: A Life of C. S. Lewis, he wrote:
+
+Later Sayer changed his mind. In the introduction to the 1997 edition of his biography of Lewis he wrote:
+
+However, the romantic nature of the relationship is doubted by other writers; for example, Philip Zaleski and Carol Zaleski write in The Fellowship that
+
+Lewis spoke well of Mrs. Moore throughout his life, saying to his friend George Sayer, "She was generous and taught me to be generous, too." In December 1917, Lewis wrote in a letter to his childhood friend Arthur Greeves that Janie and Greeves were "the two people who matter most to me in the world".
+
+In 1930, Lewis moved into The Kilns with his brother Warnie, Mrs. Moore, and her daughter Maureen. The Kilns was a house in the district of Headington Quarry on the outskirts of Oxford, now part of the suburb of Risinghurst. They all contributed financially to the purchase of the house, which eventually passed to Maureen, who by then was Dame Maureen Dunbar, when Warren died in 1973.
+
+Moore had dementia in her later years and was eventually moved into a nursing home, where she died in 1951. Lewis visited her every day in this home until her death.
+
+Return to Christianity
+Lewis was raised in a religious family that attended the Church of Ireland. He became an atheist at age 15, though he later described his young self as being paradoxically "very angry with God for not existing" and "equally angry with him for creating a world". His early separation from Christianity began when he started to view his religion as a chore and a duty; around this time, he also gained an interest in the occult, as his studies expanded to include such topics. Lewis quoted Lucretius (De rerum natura, 5.198–9) as having one of the strongest arguments for atheism:
+
+which he translated poetically as follows:
+
+Had God designed the world, it would not be
+A world so frail and faulty as we see.
+
+(This is a highly poetic, rather than a literal translation.  A more literal translation, by William Ellery Leonard, reads: "That in no wise the nature of all things / For us was fashioned by a power divine – / So great the faults it stands encumbered with.")
+
+Lewis's interest in the works of the Scottish writer George MacDonald was part of what turned him from atheism. This can be seen particularly well through this passage in Lewis's The Great Divorce, chapter nine, when the semi-autobiographical main character meets MacDonald in Heaven:
+
+He eventually returned to Christianity, having been influenced by arguments with his Oxford colleague and friend J. R. R. Tolkien, whom he seems to have met for the first time on 11 May 1926, as well as the book The Everlasting Man by G. K. Chesterton. Lewis vigorously resisted conversion, noting that he was brought into Christianity like a prodigal, "kicking, struggling, resentful, and darting his eyes in every direction for a chance to escape". He described his last struggle in Surprised by Joy:
+
+After his conversion to theism in 1929, Lewis converted to Christianity in 1931, following a long discussion during a late-night walk along Addison's Walk with close friends Tolkien and Hugo Dyson. He records making a specific commitment to Christian belief while on his way to the zoo with his brother. He became a member of the Church of England – somewhat to the disappointment of Tolkien, who had hoped that he would join the Catholic Church.
+
+Lewis was a committed Anglican who upheld a largely orthodox Anglican theology, though in his apologetic writings, he made an effort to avoid espousing any one denomination. In his later writings, some believe that he proposed ideas such as purification of venial sins after death in purgatory (The Great Divorce and Letters to Malcolm) and mortal sin (The Screwtape Letters), which are generally considered to be Roman Catholic teachings, although they are also widely held in Anglicanism (particularly in high church Anglo-Catholic circles). Regardless, Lewis considered himself an entirely orthodox Anglican to the end of his life, reflecting that he had initially attended church only to receive communion and had been repelled by the hymns and the poor quality of the sermons. He later came to consider himself honoured by worshipping with men of faith who came in shabby clothes and work boots and who sang all the verses to all the hymns.
+
+Second World War
+After the outbreak of the Second World War in 1939, the Lewises took child evacuees from London and other cities into The Kilns. Lewis was only 40 when the war began, and he tried to re-enter military service, offering to instruct cadets; however, his offer was not accepted. He rejected the recruiting office's suggestion of writing columns for the Ministry of Information in the press, as he did not want to "write lies" to deceive the enemy. He later served in the local Home Guard in Oxford.
+
+From 1941 to 1943, Lewis spoke on religious programmes broadcast by the BBC from London while the city was under periodic air raids. These broadcasts were appreciated by civilians and servicemen at that stage. For example, Air Chief Marshal Sir Donald Hardman wrote:
+
+"The war, the whole of life, everything tended to seem pointless. We needed, many of us, a key to the meaning of the universe. Lewis provided just that."
+
+The youthful Alistair Cooke was less impressed, and in 1944 described  "the alarming vogue of Mr. C.S. Lewis" as an example of how wartime tends to "spawn so many quack religions and Messiahs". The broadcasts were anthologized in Mere Christianity. From 1941, Lewis was occupied at his summer holiday weekends visiting R.A.F. stations to speak on his faith, invited by  Chaplain-in-Chief Maurice Edwards.
+
+It was also during the same wartime period that Lewis was invited to become first President of the Oxford Socratic Club in January 1942, a position that he enthusiastically held until he resigned on appointment to Cambridge University in 1954.
+
+Honour declined
+Lewis was named on the last list of honours by George VI in December 1951 as a Commander of the Order of the British Empire (CBE) but declined so as to avoid association with any political issues.
+
+Chair at Cambridge University
+In 1954, Lewis accepted the newly founded chair in Mediaeval and Renaissance Literature at Magdalene College, Cambridge, where he finished his career. He maintained a strong attachment to the city of Oxford, keeping a home there and returning on weekends until his death in 1963.
+
+Joy Davidman
+
+In later life, Lewis corresponded with Joy Davidman Gresham, an American writer of Jewish background, a former Communist, and a convert from atheism to Christianity. She was separated from her alcoholic and abusive husband, novelist William L. Gresham, and came to England with her two sons, David and Douglas. Lewis at first regarded her as an agreeable intellectual companion and personal friend, and it was on this level that he agreed to enter into a civil marriage contract with her so that she could continue to live in the UK. They were married at the register office, 42 St Giles', Oxford, on 23 April 1956. Lewis's brother Warren wrote: "For Jack the attraction was at first undoubtedly intellectual. Joy was the only woman whom he had met ... who had a brain which matched his own in suppleness, in width of interest, and in analytical grasp, and above all in humour and a sense of fun." After complaining of a painful hip, she was diagnosed with terminal bone cancer, and the relationship developed to the point that they sought a Christian marriage. Since she was divorced, this was not straightforward in the Church of England at the time, but a friend, the Rev. Peter Bide, performed the ceremony at her bed in the Churchill Hospital on 21 March 1957.
+
+Gresham's cancer soon went into remission, and the couple lived together as a family with Warren Lewis until 1960, when her cancer recurred. She died on 13 July 1960. Earlier that year, the couple took a brief holiday in Greece and the Aegean; Lewis was fond of walking but not of travel, and this marked his only crossing of the English Channel after 1918. Lewis's book A Grief Observed describes his experience of bereavement in such a raw and personal fashion that he originally released it under the pseudonym N. W. Clerk to keep readers from associating the book with him. Ironically, many friends recommended the book to Lewis as a method for dealing with his own grief. After Lewis's death, his authorship was made public by Faber's, with the permission of the executors.
+
+Lewis continued to raise Gresham's two sons after her death. Douglas Gresham is a Christian like Lewis and his mother, while David Gresham turned to his mother's ancestral faith, becoming Orthodox Jewish in his beliefs. His mother's writings had featured the Jews in an unsympathetic manner, particularly on "shohet" (ritual slaughterer). David informed Lewis that he was going to become a ritual slaughterer to present this type of Jewish religious functionary to the world in a more favourable light. In a 2005 interview, Douglas Gresham acknowledged that he and his brother were not close, although they had corresponded via email. 
+
+David died on 25 December 2014. In 2020, Douglas revealed that his brother had died at a Swiss mental hospital, and that when David was a young man he had been diagnosed with paranoid schizophrenia.
+
+Illness and death
+
+In early June 1961, Lewis began experiencing nephritis, which resulted in blood poisoning. His illness caused him to miss the autumn term at Cambridge, though his health gradually began improving in 1962 and he returned that April. His health continued to improve and, according to his friend George Sayer, Lewis was fully himself by early 1963.
+
+On 15 July that year, Lewis fell ill and was admitted to the hospital; he had a heart attack at 5:00 pm the next day and lapsed into a coma, but unexpectedly woke the following day at 2:00 pm. After he was discharged from the hospital, Lewis returned to the Kilns, though he was too ill to return to work. As a result, he resigned from his post at Cambridge in August 1963.
+
+Lewis's condition continued to decline, and he was diagnosed with end-stage kidney failure in mid-November. He collapsed in his bedroom at 5:30 pm on 22 November, exactly one week before his 65th birthday, and died a few minutes later. He is buried in the churchyard of Holy Trinity Church, Headington, Oxford. His brother Warren died on 9 April 1973 and was buried in the same grave.
+
+Media coverage of Lewis's death was almost completely overshadowed by news of the assassination of John F. Kennedy, which occurred on the same day (approximately 55 minutes following Lewis's collapse), as did the death of English writer Aldous Huxley, author of Brave New World. This coincidence was the inspiration for Peter Kreeft's book Between Heaven and Hell: A Dialog Somewhere Beyond Death with John F. Kennedy, C. S. Lewis, & Aldous Huxley. Lewis is commemorated on 22 November in the church calendar of the Episcopal Church.
+
+Career
+
+Scholar
+
+Lewis began his academic career as an undergraduate student at Oxford University, where he won a triple first, the highest honours in three areas of study. He was then elected a Fellow of Magdalen College, Oxford, where he worked for nearly thirty years, from 1925 to 1954. In 1954, he was awarded the newly founded chair of Mediaeval and Renaissance Literature at Cambridge University, and was elected a fellow of Magdalene College. Concerning his appointed academic field, he argued that there was no such thing as an English Renaissance. Much of his scholarly work concentrated on the later Middle Ages, especially its use of allegory. His The Allegory of Love (1936) helped reinvigorate the serious study of late medieval narratives such as the Roman de la Rose.
+
+Lewis was commissioned to write the volume English Literature in the Sixteenth Century (Excluding Drama) for the Oxford History of English Literature. His book A Preface to Paradise Lost is still cited as a criticism of that work.  His last academic work, The Discarded Image: An Introduction to Medieval and Renaissance Literature (1964), is a summary of the medieval world view, a reference to the "discarded image" of the cosmos.
+
+Lewis was a prolific writer, and his circle of literary friends became an informal discussion society known as the "Inklings", including J. R. R. Tolkien, Nevill Coghill, Lord David Cecil, Charles Williams, Owen Barfield, and his brother Warren Lewis. Glyer points to December 1929 as the Inklings' beginning date. Lewis's friendship with Coghill and Tolkien grew during their time as members of the Kolbítar, an Old Norse reading group that Tolkien founded and which ended around the time of the inception of the Inklings. At Oxford, he was the tutor of poet John Betjeman, critic Kenneth Tynan, mystic Bede Griffiths, novelist Roger Lancelyn Green and Sufi scholar Martin Lings, among many other undergraduates. The religious and conservative Betjeman detested Lewis, whereas the anti-establishment Tynan retained a lifelong admiration for him.
+
+Of Tolkien, Lewis writes in Surprised by Joy:
+
+Novelist
+In addition to his scholarly work, Lewis wrote several popular novels, including the science fiction Space Trilogy for adults and the Narnia fantasies for children. Most deal implicitly with Christian themes such as sin, humanity's fall from grace, and redemption.
+
+His first novel after becoming a Christian was The Pilgrim's Regress (1933), which depicted his experience with Christianity in the style of John Bunyan's The Pilgrim's Progress. The book was poorly received by critics at the time, although David Martyn Lloyd-Jones, one of Lewis's contemporaries at Oxford, gave him much-valued encouragement. Asked by Lloyd-Jones when he would write another book, Lewis replied, "When I understand the meaning of prayer."
+
+The Space Trilogy (also called the Cosmic Trilogy or Ransom Trilogy) dealt with what Lewis saw as the dehumanizing trends in contemporary science fiction. The first book, Out of the Silent Planet, was apparently written following a conversation with his friend J. R. R. Tolkien about these trends. Lewis agreed to write a "space travel" story and Tolkien a "time travel" one, but Tolkien never completed "The Lost Road", linking his Middle-earth to the modern world. Lewis's main character Elwin Ransom is based in part on Tolkien, a fact to which Tolkien alludes in his letters.
+
+The second novel, Perelandra, depicts a new Garden of Eden on the planet Venus, a new Adam and Eve, and a new "serpent figure" to tempt Eve. The story can be seen as an account of what might have happened if the terrestrial Adam had defeated the serpent and avoided the Fall of Man, with Ransom intervening in the novel to "ransom" the new Adam and Eve from the deceptions of the enemy. The third novel, That Hideous Strength, develops the theme of nihilistic science threatening traditional human values, embodied in Arthurian legend.
+
+Many ideas in the trilogy, particularly opposition to dehumanization as portrayed in the third book, are presented more formally in The Abolition of Man, based on a series of lectures by Lewis at Durham University in 1943. Lewis stayed in Durham, where he says he was overwhelmed by the magnificence of the cathedral. That Hideous Strength is in fact set in the environs of "Edgestow" university, a small English university like Durham, though Lewis disclaims any other resemblance between the two.
+
+Walter Hooper, Lewis's literary executor, discovered a fragment of another science-fiction novel apparently written by Lewis called The Dark Tower. Ransom appears in the story but it is not clear whether the book was intended as part of the same series of novels. The manuscript was eventually published in 1977, though Lewis scholar Kathryn Lindskoog doubts its authenticity.
+
+The Chronicles of Narnia, considered a classic of children's literature, is a series of seven fantasy novels. Written between 1949 and 1954 and illustrated by Pauline Baynes, the series is Lewis's most popular work, having sold over 100 million copies in 41 languages  . It has been adapted several times, complete or in part, for radio, television, stage and cinema.
+
+The books contain Christian ideas intended to be easily accessible to young readers. In addition to Christian themes, Lewis also borrows characters from Greek and Roman mythology, as well as traditional British and Irish fairy tales.
+
+Lewis's last novel, Till We Have Faces, a retelling of the myth of Cupid and Psyche, was published in 1956. Although Lewis called it "far and away my best book," it was not as well-reviewed as his previous work.
+
+Other works
+Lewis wrote several works on Heaven and Hell. One of these, The Great Divorce, is a short novella in which a few residents of Hell take a bus ride to Heaven, where they are met by people who dwell there. The proposition is that they can stay if they choose, in which case they can call the place where they had come from "Purgatory", instead of "Hell", but many find it not to their taste. The title is a reference to William Blake's The Marriage of Heaven and Hell, a concept that Lewis found a "disastrous error". This work deliberately echoes two other more famous works with a similar theme: the Divine Comedy of Dante Alighieri, and Bunyan's The Pilgrim's Progress.
+
+Another short work, The Screwtape Letters, which he dedicated to J. R. R. Tolkien, consists of letters of advice from senior demon Screwtape to his nephew Wormwood on the best ways to tempt a particular human and secure his damnation. Lewis's last novel was Till We Have Faces, which he thought of as his most mature and masterly work of fiction but which was never a popular success. It is a retelling of the myth of Cupid and Psyche from the unusual perspective of Psyche's sister. It is deeply concerned with religious ideas, but the setting is entirely pagan, and the connections with specific Christian beliefs are left implicit.
+
+Before Lewis's conversion to Christianity, he published two books: Spirits in Bondage, a collection of poems, and Dymer, a single narrative poem. Both were published under the pen name Clive Hamilton. Other narrative poems have since been published posthumously, including Launcelot, The Nameless Isle, and The Queen of Drum.
+
+He also wrote The Four Loves, which rhetorically explains four categories of love: friendship, eros, affection, and charity.
+
+In 2009, a partial draft was discovered of Language and Human Nature, which Lewis had begun co-writing with J. R. R. Tolkien, but which was never completed.
+
+Christian apologist
+Lewis is also regarded by many as one of the most influential Christian apologists of his time, in addition to his career as an English professor and an author of fiction. Mere Christianity was voted best book of the 20th century by Christianity Today in 2000. He has been called "The Apostle to the Skeptics" due to his approach to religious belief as a sceptic, and his following conversion.
+
+Lewis was very interested in presenting an argument from reason against metaphysical naturalism and for the existence of God. Mere Christianity, The Problem of Pain, and Miracles were all concerned, to one degree or another, with refuting popular objections to Christianity, such as the question, "How could a good God allow pain to exist in the world?" He also became a popular lecturer and broadcaster, and some of his writing originated as scripts for radio talks or lectures (including much of Mere Christianity).
+
+According to George Sayer, losing a 1948 debate with Elizabeth Anscombe, also a Christian, led Lewis to re-evaluate his role as an apologist, and his future works concentrated on devotional literature and children's books. Anscombe had a completely different recollection of the debate's outcome and its emotional effect on Lewis. Victor Reppert also disputes Sayer, listing some of Lewis's post-1948 apologetic publications, including the second and revised edition of his Miracles in 1960, in which Lewis addressed Anscombe's criticism. Noteworthy too is Roger Teichman's suggestion in The Philosophy of Elizabeth Anscombe that the intellectual impact of Anscombe's paper on Lewis's philosophical self-confidence should not be over-rated: "... it seems unlikely that he felt as irretrievably crushed as some of his acquaintances have made out; the episode is probably an inflated legend, in the same category as the affair of Wittgenstein's Poker. Certainly, Anscombe herself believed that Lewis's argument, though flawed, was getting at something very important; she thought that this came out more in the improved version of it that Lewis presented in a subsequent edition of Miracles – though that version also had 'much to criticize in it'."
+
+Lewis wrote an autobiography titled Surprised by Joy, which places special emphasis on his own conversion. He also wrote many essays and public speeches on Christian belief, many of which were collected in God in the Dock and The Weight of Glory and Other Addresses.
+
+His most famous works, the Chronicles of Narnia, contain many strong Christian messages and are often considered allegory. Lewis, an expert on the subject of allegory, maintained that the books were not allegory, and preferred to call the Christian aspects of them "suppositional". As Lewis wrote in a letter to a Mrs. Hook in December 1958:
+
+Prior to his conversion, Lewis used the word "Moslem" to refer to Muslims, adherents of Islam; following his conversion, however, he started using "Mohammedans" and described Islam as a Christian heresy rather than an independent religion.
+
+"Trilemma"
+
+In a much-cited passage from Mere Christianity, Lewis challenged the view that Jesus was a great moral teacher but not God. He argued that Jesus made several implicit claims to divinity, which would logically exclude that claim:
+
+Although this argument is sometimes called "Lewis's trilemma", Lewis did not invent it but rather developed and popularized it. It has also been used by Christian apologist Josh McDowell in his book More Than a Carpenter. It has been widely repeated in Christian apologetic literature but largely ignored by professional theologians and biblical scholars.
+
+Lewis's Christian apologetics, and this argument in particular, have been criticized. Philosopher John Beversluis described Lewis's arguments as "textually careless and theologically unreliable", and this particular argument as logically unsound and an example of a false dilemma. The Pluralist theologian John Hick claimed that New Testament scholars do not now support the view that Jesus claimed to be God. The Anglican New Testament scholar N. T. Wright criticizes Lewis for failing to recognize the significance of Jesus's Jewish identity and setting – an oversight which "at best, drastically short-circuits the argument" and which lays Lewis open to criticism that his argument "doesn't work as history, and it backfires dangerously when historical critics question his reading of the gospels", although he argues that this "doesn't undermine the eventual claim".
+
+Lewis used a similar argument in The Lion, the Witch and the Wardrobe, when the old Professor advises his young guests that their sister's claims of a magical world must logically be taken as either lies, madness, or truth.
+
+Universal morality
+One of the main theses in Lewis's apologia is that there is a common morality known throughout humanity, which he calls "natural law". In the first five chapters of Mere Christianity, Lewis discusses the idea that people have a standard of behaviour to which they expect people to adhere. Lewis claims that people all over the earth know what this law is and when they break it. He goes on to claim that there must be someone or something behind such a universal set of principles.
+
+Lewis also portrays Universal Morality in his works of fiction. In The Chronicles of Narnia he describes Universal Morality as the "deep magic" which everyone knew.
+
+In the second chapter of Mere Christianity, Lewis recognizes that "many people find it difficult to understand what this Law of Human Nature ... is." And he responds first to the idea "that the Moral Law is simply our herd instinct" and second to the idea "that the Moral Law is simply a social convention". In responding to the second idea Lewis notes that people often complain that one set of moral ideas is better than another, but that this actually argues for there existing some "Real Morality" to which they are comparing other moralities. Finally, he notes that sometimes differences in moral codes are exaggerated by people who confuse differences in beliefs about morality with differences in beliefs about facts:
+
+Lewis also had fairly progressive views on the topic of "animal morality", in particular the suffering of animals, as is evidenced by several of his essays: most notably, On Vivisection and "On the Pains of Animals".
+
+Legacy
+
+Lewis continues to attract a wide readership. In 2008, The Times ranked him eleventh on their list of "the 50 greatest British writers since 1945". Readers of his fiction are often unaware of what Lewis considered the Christian themes of his works. His Christian apologetics are read and quoted by members of many Christian denominations. In 2013, on the 50th anniversary of his death, Lewis joined some of Britain's greatest writers recognized at Poets' Corner, Westminster Abbey. The dedication service, at noon on 22 November 2013, included a reading from The Last Battle by Douglas Gresham, younger stepson of Lewis. Flowers were laid by Walter Hooper, trustee and literary advisor to the Lewis Estate. An address was delivered by former Archbishop of Canterbury Rowan Williams. The floor stone inscription is a quotation from an address by Lewis:
+
+Lewis has been the subject of several biographies, a few of which were written by close friends, such as Roger Lancelyn Green and George Sayer. In 1985, the screenplay Shadowlands by William Nicholson dramatized Lewis's life and relationship with Joy Davidman Gresham. It was aired on British television starring Joss Ackland and Claire Bloom. This was also staged as a theatre play starring Nigel Hawthorne in 1989 and made into the 1993 feature film Shadowlands starring Anthony Hopkins and Debra Winger.
+
+Many books have been inspired by Lewis, including A Severe Mercy by his correspondent and friend Sheldon Vanauken. The Chronicles of Narnia has been particularly influential. Modern children's literature has been more or less influenced by Lewis's series, such as Daniel Handler's A Series of Unfortunate Events, Eoin Colfer's Artemis Fowl, Philip Pullman's His Dark Materials, and J. K. Rowling's Harry Potter. Pullman is an atheist and is known to be sharply critical of C. S. Lewis's work, accusing Lewis of featuring religious propaganda, misogyny, racism, and emotional sadism in his books. However, he has also modestly praised The Chronicles of Narnia for being a "more serious" work of literature in comparison with Tolkien's "trivial" The Lord of the Rings. Authors of adult fantasy literature such as Tim Powers have also testified to being influenced by Lewis's work.
+
+In A Sword Between the Sexes? C. S. Lewis and the Gender Debates, Mary Stewart Van Leeuwen finds in Lewis's work "a hierarchical and essentialist view of class and gender" corresponding to an upbringing during the Edwardian era.
+
+Most of Lewis's posthumous work has been edited by his literary executor Walter Hooper. Kathryn Lindskoog, an independent Lewis scholar, argued that Hooper's scholarship is not reliable and that he has made false statements and attributed forged works to Lewis. Lewis's stepson, Douglas Gresham, denies the forgery claims, saying that "The whole controversy thing was engineered for very personal reasons ... Her fanciful theories have been pretty thoroughly discredited."
+
+A bronze statue of Lewis's character Digory from The Magician's Nephew stands in Belfast's Holywood Arches in front of the Holywood Road Library.
+
+Several C. S. Lewis Societies exist around the world, including one which was founded in Oxford in 1982. The C.S. Lewis Society at the University of Oxford meets at Pusey House during term time to discuss papers on the life and works of Lewis and the other Inklings, and generally appreciate all things Lewisian.
+
+Live-action film adaptations have been made of three of The Chronicles of Narnia: The Lion, the Witch, and the Wardrobe (2005), Prince Caspian (2008) and The Voyage of the Dawn Treader (2010).
+
+Lewis is featured as a main character in The Chronicles of the Imaginarium Geographica series by James A. Owen. He is one of two characters in Mark St. Germain's 2009 play Freud's Last Session, which imagines a meeting between Lewis, aged 40, and Sigmund Freud, aged 83, at Freud's house in Hampstead, London, in 1939, as the Second World War is about to break out.
+
+In 2021, The Most Reluctant Convert, a biographical drama about Lewis's life and conversion, was released.
+
+The CS Lewis Nature Reserve, on ground owned by Lewis, lies behind his house, The Kilns. There is public access.
+
+Bibliography
+
+See also
+
+ Marion E. Wade Center at Wheaton College, has the world's largest collection of works by and about Lewis
+ Courtly love
+ Johan Huizinga
+ D. W. Robertson Jr.
+
+Notes
+
+References
+
+ 
+ 
+ 
+ .
+  [reprinted as ]
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ .
+ 
+ 
+ 
+ 
+ .
+ 
+ 
+ .
+
+Further reading
+
+ 
+ 
+ Beversluis, John (1985), C. S. Lewis and the Search for Rational Religion. Grand Rapids: Eerdmans 
+ Bresland, Ronald W. (1999), The Backward Glance: C. S. Lewis and Ireland. Belfast: Institute of Irish Studies at Queen's University of Belfast.
+ Brown, Devin (2013), A Life Observed: A Spiritual Biography of C. S. Lewis. Grand Rapids: Brazos Press 
+ Christopher, Joe R. & Joan K. Ostling (1972), C. S. Lewis: An Annotated Checklist of Writings About Him and His Works. Kent, Ohio: Kent State University Press, n.d. 
+ Como, James (1998), Branches to Heaven: The Geniuses of C. S. Lewis. Spence
+ Como, James (2006), Remembering C. S. Lewis (3rd edn. of C. S. Lewis at the Breakfast Table). Ignatius Press
+ Connolly, Sean (2007), Inklings of Heaven: C. S. Lewis and Eschatology. Gracewing. 
+ Coren, Michael (1994), The Man Who Created Narnia: The Story of C. S. Lewis. Grand Rapids: Eerdmans, reprint edition 1996 (First published 1994 in Canada by Lester Publishing Limited). 
+ Derrick, Christopher (1981) C. S. Lewis and the Church of Rome: A Study in Proto-Ecumenism. Ignatius Press. 
+ 
+ Downing, David C. (1992), Planets in Peril: A Critical Study of C. S. Lewis's Ransom Trilogy. Amherst: University of Massachusetts Press. 
+ Downing, David C. (2002), The Most Reluctant Convert: C. S. Lewis's Journey to Faith. InterVarsity. 
+ Downing, David C. (2005), Into the Region of Awe: Mysticism in C. S. Lewis. InterVarsity. 
+ Downing, David C. (2005), Into the Wardrobe: C. S. Lewis and the Narnia Chronicles. San Francisco: Jossey-Bass. 
+ 
+ Duriez, Colin (2003), Tolkien and C. S. Lewis: The Gift of Friendship. Paulist Press 
+ Duriez, Colin (2015), Bedeviled: Lewis, Tolkien and the Shadow of Evil. InterVarsity Press 
+ Duriez, Colin & David Porter (2001), The Inklings Handbook: The Lives, Thought and Writings of C. S. Lewis, J. R. R. Tolkien, Charles Williams, Owen Barfield, and Their Friends. London: Azure. 
+ 
+ 
+ Edwards, Bruce L. (2005), Further Up and Further In: Understanding C. S. Lewis's The Lion, the Witch, and the Wardrobe. Broadman and Holman. 
+ Edwards, Bruce L. (2005), Not a Tame Lion: The Spiritual World of Narnia. Tyndale. 
+ 
+ Fowler, Alastair, "C. S. Lewis: Supervisor", Yale Review; Vol. 91, No. 4 (October 2003).
+ 
+ Gardner, Helen (1966) "† Clive Staples Lewis, 1898–1963". Biographical memoir, in Proceedings of the British Academy 51 (1966), 417–28.
+ Gibb, Jocelyn (ed.) (1965), Light on C. S. Lewis. Geoffrey Bles, 1965, & Harcourt Brace Jovanovich, 1976. 
+ Gilbert, Douglas & Clyde Kilby (1973) C. S. Lewis: Images of His World. Eerdmans, 1973 & 2005. 
+ 
+ 
+ 
+ Gresham, Douglas (1994), Lenten Lands: My Childhood with Joy Davidman and C. S. Lewis. HarperSanFrancisco. 
+ Gresham, Douglas (2005), Jack's Life: A Memory of C. S. Lewis. Broadman & Holman Publishers. 
+ Griffin, William (2005), C. S. Lewis: The Authentic Voice (formerly C. S. Lewis: A Dramatic Life). Lion. 
+ Hart, Dabney Adams (1984), Through the Open Door: A New Look at C. S. Lewis. University of Alabama Press. 
+ Heck, Joel D. (2006), Irrigating Deserts: C. S. Lewis on Education. Concordia Publishing House. 
+ 
+ 
+ 
+ 
+ 
+ 
+ Keefe, Carolyn (1979), C. S. Lewis: Speaker & Teacher. Zondervan. 
+ Kennedy, Jon (2008), The Everything Guide to C. S. Lewis and Narnia. Adams Media. 
+ Kennedy, Jon (2012), C. S. Lewis Themes and Threads. Amazon Kindle ASIN B00ATSY3AQ
+ Kilby, Clyde S. (1964), The Christian World of C. S. Lewis. Grand Rapids: Eerdmans, 1964, 1995. 
+ King, Don W. (2001), C. S. Lewis, Poet: The Legacy of His Poetic Impulse. Kent, Ohio: Kent State University Press. 
+ 
+ 
+ Lindskoog, Kathryn (1994), Light in the Shadowlands: Protecting the Real C. S. Lewis. Multnomah Pub. 
+ Lowenberg, Susan (1993), C. S. Lewis: A Reference Guide, 1972–1988. Hall & Co. 
+ Mardindale, Wayne & Jerry Root (1990), The Quotable Lewis. Tyndale House Publishers. 
+ Martin, Thomas L. (ed.) (2000), Reading the Classics with C. S. Lewis. Baker Academic. 
+ Miller, Laura (2008) "The Magician's Book", Little, Brown & Co. 
+ Mills, David (ed) (1998) The Pilgrim's Guide: C. S. Lewis and the Art of Witness. Grand Rapids: Eerdmans. 
+ 
+ 
+ 
+ Pearce, Joseph (1999), C. S. Lewis and the Catholic Church. HarperCollins, 1999; then Ignatius Press, 2003. 
+ Peters, Thomas C. (1998), Simply C. S. Lewis: A Beginner's Guide to His Life and Works. Kingsway Publications. 
+ Phillips, Justin (2003), C. S. Lewis at the BBC: Messages of Hope in the Darkness of War. Marshall Pickering. 
+ Poe, Harry Lee & Rebecca Whitten Poe (eds) (2006), C. S. Lewis Remembered: Collected Reflections of Students, Friends & Colleagues. Zondervan. 
+ Reppert, Victor (2003), C. S. Lewis's Dangerous Idea: In Defense of the Argument from Reason. InterVarsity Press. 
+ Sayer, George (1988), Jack: C. S. Lewis and His Times. London: Macmillan. 
+ Schakel, Peter J. (1984), Reason and Imagination in C. S. Lewis: A Study of "Till We Have Faces" . Grand Rapids: Eerdmans. 
+ Schakel, Peter J. (2002), Imagination and the Arts in C. S. Lewis: Journeying to Narnia and Other Worlds. University of Missouri Press. 
+ Schakel, Peter J. (ed.) (1977), The Longing for a Form: Essays on the Fiction of C. S. Lewis. Kent, Ohio: Kent State University Press. 
+ Schakel, Peter J. & Charles A. Huttar (eds.) (1991), Word and Story in C. S. Lewis. University of Missouri Press. 
+ Schofield, Stephen (1983), In Search of C. S. Lewis. Bridge Logos Pub. 
+ Schultz, Jeffrey D. & John G. West Jr. (eds) (1998), The C. S. Lewis Readers' Encyclopedia. Zondervan Publishing House. 
+ Schwartz, Sanford (2009), C. S. Lewis on the Final Frontier: Science and the Supernatural in the Space Trilogy. Oxford University Press. .
+ Tennyson, G. B. (ed.) (1989), Owen Barfield on C. S. Lewis. Wesleyan University Press 
+ 
+ Wagner, Richard J. (2005) C. S. Lewis and Narnia for Dummies. For Dummies. 
+ Walker, Andrew & Patrick James (eds.) (1998), Rumours of Heaven: Essays in Celebration of C. S. Lewis, Guildford: Eagle. 
+ Walsh, Chad (1949), C. S. Lewis: Apostle to the Skeptics. London: Macmillan
+ Walsh, Chad (1979), The Literary Legacy of C. S. Lewis. New York: Harcourt Brace Jovanovich. 
+ Ward, Michael (2008), Planet Narnia. Oxford University Press. 
+ Watson, George (ed.) (1992), Critical Essays on C. S. Lewis. Menston: Scolar Press. 
+ White, Michael (2005), C. S. Lewis: The Boy Who Chronicled Narnia. Abacus. 
+ Wielenberg, Erik J. (2007), God and the Reach of Reason. Cambridge University Press.
+
+External links
+
+ 
+ 
+ 
+ 
+ 
+ Journal of Inklings Studies peer-reviewed journal on Lewis and his literary circle, based at Oxford
+ C. S. Lewis Reading Room, with extensive links to online primary and secondary literature (Tyndale Seminary)
+ C. S. Lewis research collection at The Marion E. Wade Center at Wheaton College
+ C. S. Lewis at the Encyclopedia of Science Fiction
+ C. S. Lewis at the Encyclopedia of Fantasy
+BBC Radio 4 – Great Lives – Suzannah Lipscomb on CS Lewis – 3 January 2017 Step though the wardrobe on Great Lives as CS Lewis – creator of the Narnia Chronicles – is this week's choice
+ 
+
+ 
+1898 births
+1963 deaths
+Military personnel from Belfast
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+Chinese dominoes are used in several tile-based games, namely, tien gow, pai gow, tiu u and kap tai shap.  In Cantonese they are called  (), which literally means "bone tiles"; it is also the name of a northern Chinese game, where the rules are quite different from the southern Chinese version of tien gow.
+
+History
+Ming author Xie Zhaozhe (1567–1624) records the legend of dominoes having been presented to Song Emperor Huizong in 1112. However the contemporary Li Qingzhao (1084 – ) made no mention of dominoes in her compendium of games. 
+
+In China, early "domino" tiles were functionally identical to playing cards. An identifiable version of Chinese dominoes developed in the 12th or 13th century. 
+
+The oldest confirmed written mention of dominoes in China comes from the Former Events in Wulin (i.e. the capital Hangzhou) written by the Yuan Dynasty (1271–1368) author Zhou Mi (1232–1298), who listed "pupai" (gambling plaques or dominoes) as well as dice as items sold by peddlers during the reign of Song Emperor Xiaozong ().  Andrew Lo asserts that Zhou Mi meant dominoes when referring to pupai, since the Ming author Lu Rong (1436–1494) explicitly defined pupai as dominoes (in regards to a story of a suitor who won a maiden's hand by drawing out four winning pupai from a set). Tiles dating from the 12th to 14th centuries have survived. Unlike most modern tiles they are white with black and red pips.
+
+The earliest known manual written about dominoes is the Manual of the Xuanhe Period () written by Qu You (1341–1427), but some Chinese scholars believe this manual is a forgery from a later time. In the Encyclopedia of a Myriad of Treasures, Zhang Pu (1602–1641) described the game of laying out dominoes as pupai, although the character for pu had changed, yet retained a similar pronunciation.
+
+During the Qing dynasty (1644-1912), the suits known as "Chinese" and "barbarian" were renamed to "civil" and "military" respectively to avoid offending the ruling Manchus. Tiles with blank ends, like those found in Western "double-six" dominoes, once existed during the 17th century. These games employed two sets of "double-six" tiles. It is possible that these were the types of dominoes that made it to Europe the following century. However, the 32-piece Chinese domino set, made to represent each possible face of two thrown dice and thus have no blank faces, differs from the 28-piece domino set found in the West during the mid 18th century. Chinese dominoes with blank faces were known during the 17th century.
+Each domino originally represented one of the 21 results of throwing two six-sided dice (2d6). One half of each domino is set with the pips from one die and the other half contains the pips from the second die. Chinese sets also introduce duplicates of some throws and divide the tiles into two suits: military and civil. Chinese dominoes are also longer than typical European ones.
+
+Traditional Chinese domino games include Tien Gow, Pai Gow, Che Deng, and others.
+
+Deck composition and ranking
+
+Each tile pattern in the Chinese domino set is equivalent to a single outcome when two six-sided dice are thrown. Each combination is only used once, so there are 21 unique possible patterns. Eleven of these 21 unique patterns are repeated to make a total of 32 tiles in a Chinese dominoes set. The 32-tile set is divided into two "suits" or groups called "military" and "civil". There are no markings on the tiles to distinguish these suits; a player must simply remember which tiles belong to which group. There are two each of the eleven civil suit tiles (6-6, 1-1, 4-4, 1-3, 5-5, 3-3, 2-2, 5-6, 4-6, 1-6, 1-5) and one each of the ten military suit tiles (3-6, 4-5; 2-6, 3-5; 2-5, 3-4; 2-4; 1-4, 2-3; 1-2).
+
+Civil suit
+Each civil tile also has a Chinese name (and common rough translation to English):
+ 6-6 is tin ( heaven)
+ 1-1 is dei ( earth)
+ 4-4 is yan ( man)
+ 1-3 is ngo ( goose or  harmony)
+ 5-5 is mui ( plum flower)
+ 3-3 is cheung ( long)
+ 2-2 is ban ( board)
+ 5-6 is fu ( hatchet)
+ 4-6 is ping ( partition)
+ 1-6 is tsat ( long leg seven)
+ 1-5 is luk ( big head six)
+
+The civil tiles are ranked according to the Chinese cultural significance of the tile names, and must be memorized.  The hendiatris of  () dates back for over two thousand years  while the harmony () of the three have been in dice and domino games since at least the Ming dynasty. Remembering the suits and rankings of the tiles is easier if one understands the Chinese names of the tiles and the symbolism behind them.
+
+Military suit
+The military tiles are named and ranked according to the total pips or points on the tiles.  For example, the "nines" (3-6 and 4-5) rank higher than the "eights" (2-6 and 3-5). The rankings of the individual tiles are similar in most games.  However, the ranking of combinations of tiles is slightly different in Pai Gow and Tien Gow.
+
+Since there is only one of each military tile, these are usually grouped in four mixed "pairs" of equivalent total points: nines, eights, sevens, and fives; for example, the 3-6 and 4-5 tiles "match" because they have same total points (nine) and both are in the military suit.  Among the military tiles, individual tiles of the same pair rank equally, such as 1-4 and 2-3, each totaling five. 
+
+The 2-4 (six) and 1-2 (three) military tiles also are paired together in many games despite the nominal difference in total points. They are the only tiles in the entire set that have no corresponding tile in the military suit, considering sums. In Pai Gow both of these tiles may be scored as three or six, depending on which is more advantageous. This pair when played together is considered a suit on its own, called the gi jun ( supreme).  It is the highest ranking pair in the game of Pai Gow, though the tiles rank low individually (in their normal order).  When either tile of this pair is played individually in the game of Tien Gow, each takes its regular ranking according to the total points among the other military suit tiles.
+
+Physical characteristics
+Stewart Culin stated that traditional dominoes are made of Chinese ebony with measurements of  long,  wide, and  thick.
+
+Values are marked with white and red pips. Using the same coloring scheme as traditional Chinese dice, every half-domino with 1 or 4 pips has those pips colored red; for example, the 4-5 domino has four red pips and five white pips. The only exception is the pair of 6-6 tiles.  Half of the pips on the 6-6 domino are colored red to make them stand out as the top ranking tiles.
+
+Typically, one of the short edges is marked with a single red pip, and the backs may be marked with three pips, arrayed diagonally white-red-white.
+
+Variants
+
+There are also sets with where the tiles have Xiangqi characters next to the pips. As Xiangqi also has 32 pieces, these dual use sets can be used to play Giog.
+
+Variant sets include the Digging Flowers () game, which use the same 21 patterns generated by the 2d6 combination; some tiles have flowers or frames printed on them while others have their values duplicated. In addition, a Digging Flowers set may include several bonus tiles from mahjong, including flower, season, and blank tiles.
+
+Dominoes from Korea also come in a set of 32 and bear markings schematically identical to Chinese dominoes, based on the throw of two dice, although the tiles are closer in size and shape to those used in mahjong, measuring , and the pip size may vary, especially for the 1- and 4-pip halves. The pairings for the "military" suit also differ: 1-2 and 4-5; 1-4 and 2-3, 2-4 and 3-4, 2-5 and 3-5, and 2-6 and 3-6.
+
+Bone tiles game
+
+The eponymous game of Bone Tiles (gǔpái in Mandarin) is played in northern and central China and as far south as Hunan. The name suggests that it is or became the default game played with dominoes in those regions. It is a trick-taking game similar to Tien Gow but has been simplified. In single-tile tricks, the civil and military suits have been merged into a single suit. In double-tile tricks, there is a new ranking order similar to Pai Gow. Triple-tile and quadruple-tile tricks are not allowed as in older versions of Tien Gow. Scoring has been simplified to number of stacks won.
+
+References
+
+Works cited
+
+External links
+ Domino games rules (including Chinese Dominoes)
+
+ 
+Chinese inventions
+Chinese
+
+it:Domino cinesi
+The Cenozoic ( ; ) is Earth's current geological era, representing the last 66million years of Earth's history. It is characterised by the dominance of mammals, birds and flowering plants. It is the latest of three geological eras, preceded by the Mesozoic and Paleozoic. The Cenozoic started with the Cretaceous–Paleogene extinction event, when many species, including the non-avian dinosaurs, became extinct in an event attributed by most experts to the impact of a large asteroid or other celestial body, the Chicxulub impactor.
+
+The Cenozoic is also known as the Age of Mammals because the terrestrial animals that dominated both hemispheres were mammalsthe eutherians (placentals) in the northern hemisphere and the metatherians (marsupials, now mainly restricted to Australia and to some extent South America) in the southern hemisphere. The extinction of many groups allowed mammals and birds to greatly diversify so that large mammals and birds dominated life on Earth. The continents also moved into their current positions during this era.
+
+The climate during the early Cenozoic was warmer than today, particularly during the Paleocene–Eocene Thermal Maximum. However, the Eocene to Oligocene transition and the Quaternary glaciation dried and cooled Earth.
+
+Nomenclature
+Cenozoic derives from the Greek words  ( 'new') and  ( 'life'). The name was proposed in 1840 by the British geologist John Phillips (1800–1874), who originally spelled it Kainozoic. The era is also known as the Cænozoic, Caenozoic, or Cainozoic ().
+
+In name, the Cenozoic () is comparable to the preceding Mesozoic ('middle life') and Paleozoic ('old life') Eras, as well as to the Proterozoic ('earlier life') Eon.
+
+Divisions
+The Cenozoic is divided into three periods: the Paleogene, Neogene, and Quaternary; and seven epochs: the Paleocene, Eocene, Oligocene, Miocene, Pliocene, Pleistocene, and Holocene. The Quaternary Period was officially recognised by the International Commission on Stratigraphy in June 2009. In 2004, the Tertiary Period was officially replaced by the Paleogene and Neogene Periods. The common use of epochs during the Cenozoic helps palaeontologists better organise and group the many significant events that occurred during this comparatively short interval of time. Knowledge of this era is more detailed than any other era because of the relatively young, well-preserved rocks associated with it.
+
+Paleogene
+The Paleogene spans from the extinction of non-avian dinosaurs, 66 million years ago, to the dawn of the Neogene, 23.03 million years ago. It features three epochs: the Paleocene, Eocene and Oligocene.  
+
+The Paleocene Epoch lasted from 66 million to 56 million years ago. Modern placental mammals originated during this time. The devastation of the K–Pg extinction event included the extinction of large herbivores, which permitted the spread of dense but usually species-poor forests. The Early Paleocene saw the recovery of Earth. The continents began to take their modern shape, but all the continents and the subcontinent of India were separated from each other. Afro-Eurasia was separated by the Tethys Sea, and the Americas were separated by the strait of Panama, as the isthmus had not yet formed. This epoch featured a general warming trend, with jungles eventually reaching the poles. The oceans were dominated by sharks as the large reptiles that had once predominated were extinct. Archaic mammals filled the world such as creodonts (extinct carnivores, unrelated to existing Carnivora).
+
+The Eocene Epoch ranged from 56 million years to 33.9 million years ago. In the Early-Eocene, species living in dense forest were unable to evolve into larger forms, as in the Paleocene. Among them were early primates, whales and horses along with many other early forms of mammals. At the top of the food chains were huge birds, such as Paracrax. Carbon dioxide levels were approximately 1,400 ppm. The temperature was 30 degrees Celsius with little temperature gradient from pole to pole. In the Mid-Eocene, the Antarctic Circumpolar Current between Australia and Antarctica formed. This disrupted ocean currents worldwide and as a result caused a global cooling effect, shrinking the jungles. This allowed mammals to grow to mammoth proportions, such as whales which, by that time, had become almost fully aquatic. Mammals like Andrewsarchus were at the top of the food-chain. The Late Eocene saw the rebirth of seasons, which caused the expansion of savanna-like areas, along with the evolution of grasses. The end of the Eocene was marked by the Eocene-Oligocene extinction event, the European face of which is known as the Grande Coupure.
+
+The Oligocene Epoch spans from 33.9 million to 23.03 million years ago. The Oligocene featured the expansion of grasslands which had led to many new species to evolve, including the first elephants, cats, dogs, marsupials and many other species still prevalent today. Many other species of plants evolved in this period too. A cooling period featuring seasonal rains was still in effect. Mammals still continued to grow larger and larger.
+
+Neogene
+The Neogene spans from 23.03 million to 2.58 million years ago.  It features 2 epochs: the Miocene, and the Pliocene.
+
+The Miocene Epoch spans from 23.03 to 5.333 million years ago and is a period in which grasses spread further, dominating a large portion of the world, at the expense of forests. Kelp forests evolved, encouraging the evolution of new species, such as sea otters. During this time, perissodactyla thrived, and evolved into many different varieties. Apes evolved into 30 species. The Tethys Sea finally closed with the creation of the Arabian Peninsula, leaving only remnants as the Black, Red, Mediterranean and Caspian Seas. This increased aridity. Many new plants evolved: 95% of modern seed plants families were present by the end of the Miocene.
+
+The Pliocene Epoch lasted from 5.333 to 2.58 million years ago. The Pliocene featured dramatic climatic changes, which ultimately led to modern species of flora and fauna. The Mediterranean Sea dried up for several million years (because the ice ages reduced sea levels, disconnecting the Atlantic from the Mediterranean, and evaporation rates exceeded inflow from rivers). Australopithecus evolved in Africa, beginning the human branch. The isthmus of Panama formed, and animals migrated between North and South America during the great American interchange, wreaking havoc on local ecologies. Climatic changes brought: savannas that are still continuing to spread across the world; Indian monsoons; deserts in central Asia; and the beginnings of the Sahara desert. The world map has not changed much since, save for changes brought about by the glaciations of the Quaternary, such as the Great Lakes, Hudson Bay, and the Baltic sea.
+
+Quaternary
+The Quaternary spans from 2.58 million years ago to present day, and is the shortest geological period in the Phanerozoic Eon. It features modern animals, and dramatic changes in the climate. It is divided into two epochs: the Pleistocene and the Holocene.
+
+The Pleistocene lasted from 2.58 million to 11,700 years ago. This epoch was marked by ice ages as a result of the cooling trend that started in the Mid-Eocene. There were at least four separate glaciation periods marked by the advance of ice caps as far south as 40° N in mountainous areas. Meanwhile, Africa experienced a trend of desiccation which resulted in the creation of the Sahara, Namib, and Kalahari deserts. Many animals evolved including mammoths, giant ground sloths, dire wolves, sabre-toothed cats, and Homo sapiens. 100,000 years ago marked the end of one of the worst droughts in Africa, and led to the expansion of primitive humans. As the Pleistocene drew to a close, a major extinction wiped out much of the world's megafauna, including some of the hominid species, such as Neanderthals. All the continents were affected, but Africa to a lesser extent. It still retains many large animals, such as hippos.
+
+The Holocene began 11,700 years ago and lasts to the present day. All recorded history and "the Human history" lies within the boundaries of the Holocene Epoch. Human activity is blamed for a mass extinction that began roughly 10,000 years ago, though the species becoming extinct have only been recorded since the Industrial Revolution. This is sometimes referred to as the "Sixth Extinction". It is often cited that over 322 recorded species have become extinct due to human activity since the Industrial Revolution, but the rate may be as high as 500 vertebrate species alone, the majority of which have occurred after 1900.
+
+Tectonics
+Geologically, the Cenozoic is the era when the continents moved into their current positions. Australia-New Guinea, having split from Pangea during the early Cretaceous, drifted north and, eventually, collided with Southeast Asia; Antarctica moved into its current position over the South Pole; the Atlantic Ocean widened and, later in the era (2.8 million years ago), South America became attached to North America with the isthmus of Panama.
+
+India collided with Asia  creating the Himalayas; Arabia collided with Eurasia, closing the Tethys Ocean and creating the Zagros Mountains, around .
+
+The break-up of Gondwana in Late Cretaceous and Cenozoic times led to a shift in the river courses of various large African rivers including the Congo, Niger, Nile, Orange, Limpopo and Zambezi.
+
+Climate
+In the Cretaceous, the climate was hot and humid with lush forests at the poles, there was no permanent ice and sea levels were around 300 metres higher than today. This continued for the first 10 million years of the Paleocene, culminating in the Paleocene–Eocene Thermal Maximum about . Around  Earth entered a period of long term cooling. This was mainly due to the collision of India with Eurasia, which caused the rise of the Himalayas: the upraised rocks eroded and reacted with  in the air, causing a long-term reduction in the proportion of this greenhouse gas in the atmosphere. Around  permanent ice began to build up on Antarctica. The cooling trend continued in the Miocene, with relatively short warmer periods. When South America became attached to North America creating the Isthmus of Panama around , the Arctic region cooled due to the strengthening of the Humboldt and Gulf Stream currents, eventually leading to the glaciations of the Quaternary ice age, the current interglacial of which is the Holocene Epoch.
+Recent analysis of the geomagnetic reversal frequency, oxygen isotope record, and tectonic plate subduction rate, which are indicators of the changes in the heat flux at the core mantle boundary, climate and plate tectonic activity, shows that all these changes indicate similar rhythms on million years' timescale in the Cenozoic Era occurring with the common fundamental periodicity of ~13 Myr during most of the time.
+
+Life
+Early in the Cenozoic, following the K-Pg event, the planet was dominated by relatively small fauna, including small mammals, birds, reptiles, and amphibians. From a geological perspective, it did not take long for mammals and birds to greatly diversify in the absence of the dinosaurs that had dominated during the Mesozoic. Some flightless birds grew larger than humans. These species are sometimes referred to as "terror birds", and were formidable predators. Mammals came to occupy almost every available niche (both marine and terrestrial), and some also grew very large, attaining sizes not seen in most of today's terrestrial mammals. The ranges of many Cenozoic bird clades were governed by latitude and temperature and have contracted over the course of this era as the world cooled.
+
+During the Cenozoic, mammals proliferated from a few small, simple, generalised forms into a diverse collection of terrestrial, marine, and flying animals, giving this period its other name, the Age of Mammals.  The Cenozoic is just as much the age of savannas, the age of co-dependent flowering plants and insects, and the age of birds. Grasses also played a very important role in this era, shaping the evolution of the birds and mammals that fed on them.  One group that diversified significantly in the Cenozoic as well were the snakes. Evolving in the Cenozoic, the variety of snakes increased tremendously, resulting in many colubrids, following the evolution of their current primary prey source, the rodents.
+
+In the earlier part of the Cenozoic, the world was dominated by the gastornithid birds, terrestrial crocodiles like Pristichampsus, large sharks such as Otodus, and a handful of primitive large mammal groups like uintatheres, mesonychians, and pantodonts. But as the forests began to recede and the climate began to cool, other mammals took over.
+
+The Cenozoic is full of mammals both strange and familiar, including chalicotheres, creodonts, whales, primates, entelodonts, sabre-toothed cats, mastodons and mammoths, three-toed horses, giant rhinoceros like Paraceratherium, the rhinoceros-like brontotheres, various bizarre groups of mammals from South America, such as the vaguely elephant-like pyrotheres and the dog-like marsupial relatives called borhyaenids and the monotremes and marsupials of Australia.
+
+See also
+
+ Cretaceous–Paleogene boundary (K–T boundary)
+ Geologic time scale
+ Late Cenozoic Ice Age
+
+References
+
+Further reading
+
+External links
+
+ Western Australian Museum – The Age of the Mammals
+ Cenozoic (chronostratigraphy scale)
+
+ 
+Geological eras
+1840s neologisms
+Confucianism, also known as Ruism or Ru classicism, is a system of thought and behavior originating in ancient China, and is variously described as a tradition, philosophy, (humanistic or rationalistic) religion, theory of government, or way of life. Confucianism developed from what was later called the Hundred Schools of Thought from the teachings of the Chinese philosopher Confucius (551–479 BCE). Confucius considered himself a transmitter of cultural values inherited from the Xia (c. 2070–1600 BCE), Shang (c. 1600–1046 BCE) and Western Zhou dynasties (c. 1046–771 BCE). Confucianism was suppressed during the Legalist and autocratic Qin dynasty (221–206 BCE), but survived. During the Han dynasty (206 BCE – 220 CE), Confucian approaches edged out the "proto-Taoist" Huang–Lao as the official ideology, while the emperors mixed both with the realist techniques of Legalism.
+
+Confucianism regards texts such as the Five Classics as examples that should be followed to increase the harmony of the family, social order as a whole, and the world. A Confucian revival began during the Tang dynasty (618–907 CE). In the late Tang, Confucianism developed in response to Buddhism and Taoism and was reformulated as Neo-Confucianism. This reinvigorated form was adopted as the basis of the imperial exams and the core philosophy of the scholar-official class in the Song dynasty (960–1297). The abolition of the examination system in 1905 marked the end of official Confucianism. The intellectuals of the New Culture Movement of the early twentieth century blamed Confucianism for China's weaknesses. They searched for new doctrines to replace Confucian teachings; some of these new ideologies include the "Three Principles of the People" with the establishment of the Republic of China, and then Maoism under the People's Republic of China. In the late twentieth century, the Confucian work ethic has been credited with the rise of the East Asian economy.
+
+With particular emphasis on the importance of the family and social harmony, rather than on an otherworldly source of spiritual values, the core of Confucianism is humanistic. According to American philosopher Herbert Fingarette's conceptualisation of Confucianism as a philosophical system which regards "the secular as sacred", Confucianism transcends the dichotomy between religion and humanism, considering the ordinary activities of human life—and especially human relationships—as a manifestation of the sacred, because they are the expression of humanity's moral nature (), which has a transcendent anchorage in tian (). While the Confucian concept of tian shares some similarities with the concept of a deity, it is primarily an impersonal absolute principle like the tao or the Brahman. Most scholars and practitioners do not think of tian as a god, and the deities that many Confucians worship do not originate from orthodox Confucianism. Confucianism focuses on the practical order that is given by a this-worldly awareness of tian.
+
+In religious Confucianism, liturgy (called , or sometimes , meaning 'orthopraxy') led by Confucian priests or "sages of rites" () to worship the gods in public and ancestral Chinese temples is preferred on certain occasions, by Confucian religious groups and for civil religious rites, over Taoist or popular ritual. The worldly concern of Confucianism rests upon the belief that human beings are fundamentally good, and teachable, improvable, and perfectible through personal and communal endeavor, especially self-cultivation and self-creation. Confucian thought focuses on the cultivation of virtue in a morally organised world. Some of the basic Confucian ethical concepts and practices include ren, yi, li, and zhi. Ren is the essence of the human being which manifests as compassion. It is the virtue-form of Heaven. Yi is the upholding of righteousness and the moral disposition to do good. Li is a system of ritual norms and propriety that determines how a person should properly act in everyday life in harmony with the law of Heaven. Zhi () is the ability to see what is right and fair, or the converse, in the behaviors exhibited by others. Confucianism holds one in contempt, either passively or actively, for failure to uphold the cardinal moral values of ren and yi.
+
+Traditionally, cultures and countries in the East Asian cultural sphere are strongly influenced by Confucianism, including China, Taiwan, Korea, Japan, and Vietnam, as well as various territories settled predominantly by Han Chinese people, such as Singapore and Myanmar's Kokang. Today, it has been credited for shaping East Asian societies and overseas Chinese communities, and to some extent, other parts of Asia. Most Confucianist movements have had significant differences from the original Zhou-era teachings, and are typically much more complex because of their reliance on "elaborate doctrine" and other factors such as traditions with long histories. In the past few decades, there have been talks of a "Confucian Revival" in the academic and the scholarly community, and there has been a grassroots proliferation of various types of Confucian churches. In late 2015, many Confucian personalities formally established a national Confucian Church () in China to unify the many Confucian congregations and civil society organisations.
+
+Terminology
+
+Strictly speaking, there is no term in Chinese which directly corresponds to "Confucianism". The closest catch-all term for things related to Confucianism is the word ru (). Its literal meanings in modern Chinese include 'scholar', 'learned', or 'refined man'. In Old Chinese the word had a distinct set of meanings, including 'to tame', 'to mould', 'to educate', and 'to refine'. Several different terms, some of which with modern origin, are used in different situations to express different facets of Confucianism, including:
+  – "the ru school of thought";
+  – "ru religious doctrine";
+  – "ru studies";
+  – "Confucius's religious doctrine";
+  – "Confucius's family's business", a pejorative phrase used during the New Culture Movement and the Cultural Revolution.
+
+Three of them use ru. These names do not use the name "Confucius" at all, but instead focus on the ideal of the Confucian man. The use of the term "Confucianism" has been avoided by some modern scholars, who favor "Ruism" and "Ruists" instead. Robert Eno argues that the term has been "burdened... with the ambiguities and irrelevant traditional associations". Ruism, as he states, is more faithful to the original Chinese name for the school.
+
+The term "Traditionalist" has been suggested by David Schaberg to emphasize the connection to the past, its standards, and inherited forms, in which Confucius himself placed so much importance. This translation of the word ru is followed by e.g. Yuri Pines.
+
+According to Zhou Youguang, ru originally referred to shamanic methods of holding rites and existed before Confucius's times, but with Confucius it came to mean devotion to propagating such teachings to bring civilisation to the people. Confucianism was initiated by the disciples of Confucius, developed by Mencius ( 372–289 BCE) and inherited by later generations, undergoing constant transformations and restructuring since its establishment, but preserving the principles of humaneness and righteousness at its core.
+
+In the Western world, the character for water is often used as a symbol for Confucianism, which is not the case in modern China. However, the five phases were used as important symbols representing leadership in Han dynasty thought, including Confucianist works.
+
+Five Classics and the Confucian vision
+
+Traditionally, Confucius was thought to be the author or editor of the Five Classics which were the basic texts of Confucianism, all edited into their received versions around 500 years later by Imperial Librarian Liu Xin. The scholar Yao Xinzhong allows that there are good reasons to believe that Confucian classics took shape in the hands of Confucius, but that "nothing can be taken for granted in the matter of the early versions of the classics". Yao suggests that most modern scholars hold the "pragmatic" view that Confucius and his followers did not intend to create a system of classics, but nonetheless "contributed to their formation".
+
+The scholar Tu Weiming explains these classics as embodying "five visions" which underlie the development of Confucianism:
+ I Ching (Classic of Change or Book of Changes), generally held to be the earliest of the classics, shows a metaphysical vision which combines divinatory art with numerological technique and ethical insight; philosophy of change sees cosmos as interaction between the two energies yin and yang; universe always shows organismic unity and dynamism.
+ Classic of Poetry or Book of Songs is the earliest anthology of Chinese poems and songs, with the earliest strata antedating the Zhou conquest. It shows the poetic vision in the belief that poetry and music convey common human feelings and mutual responsiveness.
+ Book of Documents or Book of History is a compilation of speeches of major figures and records of events in ancient times, embodying the political vision and addressing the kingly way in terms of the ethical foundation for humane government. The documents show the sagacity, filial piety, and work ethic of mythical sage-emperors Yao, Shun, and Yu, who established a political culture which was based on responsibility and trust. Their virtue formed a covenant of social harmony which did not depend on punishment or coercion.
+ Book of Rites describes the social forms, administration, and ceremonial rites of the Zhou Dynasty. This social vision defined society not as an adversarial system based on contractual relations but as a network of kinship groups bound by cultural identity and ritual practice, socially responsible for one another and the transmission of proper antique forms. The four functional occupations are cooperative (farmer, scholar, artisan, merchant).
+ Spring and Autumn Annals chronicles the period to which it gives its name, Spring and Autumn period (771–481 BCE), from the perspective of Confucius's home state of Lu. These events emphasise the significance of collective memory for communal self-identification, for reanimating the old is the best way to attain the new.
+
+Doctrines
+
+Theory and theology
+
+Confucianism revolves around the pursuit of the unity of the individual self and tian ("heaven"). Put it another way, it focuses on the relationship between humanity and heaven. The principle or way of Heaven (tian li or tian tao) is the order of the world and the source of divine authority. Tian li or tian tao is monistic, meaning that it singular and indivisible. Individuals may realise their humanity and become one with Heaven through the contemplation of such order. This transformation of the self may be extended to the family and society to create a harmonious community. Joël Thoraval studied Confucianism as a diffused civil religion in contemporary China, finding that it expresses itself in the widespread worship of five cosmological entities: Heaven and Earth (), the sovereign or the government (), ancestors () and masters ().
+
+According to the scholar Stephan Feuchtwang, in Chinese cosmology, which is not merely Confucian but shared by many Chinese religions, "the universe creates itself out of a primary chaos of material energy" (hundun and qi), organising through the polarity of yin and yang which characterises any thing and life. Creation is therefore a continuous ordering; it is not a creation ex nihilo. "Yin and yang are the invisible and visible, the receptive and the active, the unshaped and the shaped; they characterise the yearly cycle (winter and summer), the landscape (shady and bright), the sexes (female and male), and even sociopolitical history (disorder and order). Confucianism is concerned with finding "middle ways" between yin and yang at every new configuration of the world."
+
+Confucianism conciliates both the inner and outer polarities of spiritual cultivation, that is to say self-cultivation and world redemption, synthesised in the ideal of "sageliness within and kingliness without". Ren, translated as "humaneness" or the essence proper of a human being, is the character of compassionate mind; it is the virtue endowed by Heaven and at the same time the means by which man may achieve oneness with Heaven comprehending his own origin in Heaven and therefore divine essence. In the , it is defined as "to form one body with all things" and "when the self and others are not separated... compassion is aroused".
+
+"Lord Heaven" and "Jade Emperor" were terms for a Confucianist supreme deity who was an anthropromorphized tian, and some conceptions of it thought of the two names as synonymous.
+
+Tian and the gods
+
+Tian, a key concept in Chinese thought, refers to the God of Heaven, the northern culmen of the skies and its spinning stars, earthly nature and its laws which come from Heaven, to 'Heaven and Earth' (that is, "all things"), and to the awe-inspiring forces beyond human control. There are so many uses in Chinese thought that it is impossible to give a single English translation.
+
+Confucius used the term in a mystical way. He wrote in the Analects (7.23) that tian gave him life, and that tian watched and judged (6.28; 9.12). In 9.5 Confucius says that a person may know the movements of tian, and this provides with the sense of having a special place in the universe. In 17.19 Confucius says that tian spoke to him, though not in words. The scholar Ronnie Littlejohn warns that tian was not to be interpreted as a personal God comparable to that of the Abrahamic faiths, in the sense of an otherworldly or transcendent creator. Rather it is similar to what Taoists meant by Dao: "the way things are" or "the regularities of the world", which Stephan Feuchtwang equates with the ancient Greek concept of physis, "nature" as the generation and regenerations of things and of the moral order. Tian may also be compared to the Brahman of Hindu and Vedic traditions. The scholar Promise Hsu, in the wake of Robert B. Louden, explained 17:19 ("What does Tian ever say? Yet there are four seasons going round and there are the hundred things coming into being. What does Tian say?") as implying that even though Tian is not a "speaking person", it constantly "does" through the rhythms of nature, and communicates "how human beings ought to live and act", at least to those who have learnt to carefully listen to it.
+
+Duanmu Ci, a disciple of Confucius, said that Tian had set the master on the path to become a wise man (9.6). In 7.23 Confucius says that he has no doubt left that Tian gave him life, and from it he had developed right virtue (de). In 8.19, he says that the lives of the sages are interwoven with Tian.
+
+Regarding personal gods (shen, energies who emanate from and reproduce Tian) enliving nature, in the Analects Confucius says that it is appropriate (yi) for people to worship () them, although only through proper rites (li), implying respect of positions and discretion. Confucius himself was a ritual and sacrificial master.
+
+Answering to a disciple who asked whether it is better to sacrifice to the god of the stove or to the god of the family (a popular saying), in 3.13 Confucius says that in order to appropriately pray gods one should first know and respect Heaven. In 3.12, he explains that religious rituals produce meaningful experiences, and one has to offer sacrifices in person, acting in presence, otherwise "it is the same as not having sacrificed at all". Rites and sacrifices to the gods have an ethical importance: they generate good life, because taking part in them leads to the overcoming of the self. Analects 10.11 tells that Confucius always took a small part of his food and placed it on the sacrificial bowls as an offering to his ancestors.
+
+Some Confucian movements worship Confucius, although not as a supreme being or anything else approaching the power of tian or the tao, and/or gods from Chinese folk religion. These movements are not a part of mainstream Confucianism, although the boundary between Chinese folk religion and Confucianism can be blurred.
+
+Other movements, such as Mohism which was later absorbed by Taoism, developed a more theistic idea of Heaven. Feuchtwang explains that the difference between Confucianism and Taoism primarily lies in the fact that the former focuses on the realisation of the starry order of Heaven in human society, while the latter on the contemplation of the Dao which spontaneously arises in nature. However, Confucianism does venerate many aspects of nature and also respects various tao, as well as what Confucius saw as the main tao, the "[Way] of Heaven."
+
+The Way of Heaven involves "lifelong and sincere devotion to traditional cultural forms" and wu wei, "a state of spontaneous harmony between individual inclinations and the sacred Way".
+
+Kelly James Clark argued that Confucius himself saw Tian as an anthropomorphic god that Clark hypothetically refers to as "Heavenly Supreme Emperor", although most other scholars on Confucianism disagree with this view.
+
+Social morality and ethics
+
+As explained by Stephan Feuchtwang, the order coming from Heaven preserves the world, and has to be followed by humanity finding a "middle way" between yin and yang forces in each new configuration of reality. Social harmony or morality is identified as patriarchy, which is expressed in the worship of ancestors and deified progenitors in the male line, at ancestral shrines.
+
+Confucian ethical codes are described as humanistic. They may be practiced by all the members of a society. Confucian ethics is characterised by the promotion of virtues, encompassed by the Five Constants, elaborated by Confucian scholars out of the inherited tradition during the Han dynasty. The Five Constants are:
+ Ren (benevolence, humaneness)
+ Yi (righteousness, justice)
+ Li (propriety, rites)
+ Zhi (: wisdom, knowledge)
+ Xin (sincerity, faithfulness)
+
+These are accompanied by the classical four virtues (), one of which (Yi) is also included among the Five Constants:
+ Yi (see above)
+ Loyalty ()
+ Filial piety ()
+  ()
+
+There are many other traditionally Confucian values, such as , , , , a , , , , , and ).
+
+Ren
+
+Ren is the Confucian virtue denoting the good feeling a virtuous human experiences when being altruistic. It is exemplified by a normal adult's protective feelings for children. It is considered the essence of the human being, endowed by Heaven, and at the same time the means by which someone may act according to the principle of Heaven and become one with it.
+
+Yan Hui, Confucius's most outstanding student, once asked his master to describe the rules of ren and Confucius replied, "one should see nothing improper, hear nothing improper, say nothing improper, do nothing improper." Confucius also defined ren in the following way: "wishing to be established himself, seeks also to establish others; wishing to be enlarged himself, he seeks also to enlarge others."
+
+Another meaning of ren is "not to do to others as you would not wish done to yourself." Confucius also said, "ren is not far off; he who seeks it has already found it." Ren is close to man and never leaves him.
+
+Rite and centring
+
+Li () is a word which finds its most extensive use in Confucian and post-Confucian Chinese philosophy. Li is variously translated as 'rite' or 'reason', 'ratio' in the pure sense of Vedic  ('right', 'order') when referring to the cosmic law, but when referring to its realisation in the context of human social behaviour it has also been translated as 'customs', 'measures' and 'rules', among other terms. Li also means religious rites which establish relations between humanity and the gods.
+
+According to Stephan Feuchtwang, rites are conceived as "what makes the invisible visible", making possible for humans to cultivate the underlying order of nature. Correctly performed rituals move society in alignment with earthly and heavenly (astral) forces, establishing the harmony of the three realms—Heaven, Earth and humanity. This practice is defined as "centering" ( or ). Among all things of creation, humans themselves are "central" because they have the ability to cultivate and centre natural forces.
+
+Li embodies the entire web of interaction between humanity, human objects, and nature. Confucius includes in his discussions of li such diverse topics as learning, tea drinking, titles, mourning, and governance. Xunzi cites "songs and laughter, weeping and lamentation... rice and millet, fish and meat... the wearing of ceremonial caps, embroidered robes, and patterned silks, or of fasting clothes and mourning clothes... spacious rooms and secluded halls, soft mats, couches and benches" as vital parts of the fabric of li.
+
+Confucius envisioned proper government being guided by the principles of li. Some Confucians proposed that all human beings may pursue perfection by learning and practising li. Overall, Confucians believe that governments should place more emphasis on li and rely much less on penal punishment when they govern.
+
+Loyalty
+Loyalty () is particularly relevant for the social class to which most of Confucius's students belonged, because the most important way for an ambitious young scholar to become a prominent official was to enter a ruler's civil service.
+
+Confucius himself did not propose that "might makes right", but rather that a superior should be obeyed because of his moral rectitude. In addition, loyalty does not mean subservience to authority. This is because reciprocity is demanded from the superior as well. As Confucius stated "a prince should employ his minister according to the rules of propriety; ministers should serve their prince with faithfulness (loyalty)."
+
+Similarly, Mencius also said that "when the prince regards his ministers as his hands and feet, his ministers regard their prince as their belly and heart; when he regards them as his dogs and horses, they regard him as another man; when he regards them as the ground or as grass, they regard him as a robber and an enemy." Moreover, Mencius indicated that if the ruler is incompetent, he should be replaced. If the ruler is evil, then the people have the right to overthrow him. A good Confucian is also expected to remonstrate with his superiors when necessary. At the same time, a proper Confucian ruler should also accept his ministers' advice, as this will help him govern the realm better.
+
+In later ages, however, emphasis was often placed more on the obligations of the ruled to the ruler, and less on the ruler's obligations to the ruled. Like filial piety, loyalty was often subverted by the autocratic regimes in China. Nonetheless, throughout the ages, many Confucians continued to fight against unrighteous superiors and rulers. Many of these Confucians suffered and sometimes died because of their conviction and action. During the Ming-Qing era, prominent Confucians such as Wang Yangming promoted individuality and independent thinking as a counterweight to subservience to authority. The famous thinker Huang Zongxi also strongly criticised the autocratic nature of the imperial system and wanted to keep imperial power in check.
+
+Many Confucians also realised that loyalty and filial piety have the potential of coming into conflict with one another. This may be true especially in times of social chaos, such as during the period of the Ming-Qing transition.
+
+Filial piety
+
+In Confucian philosophy,  is a virtue of respect for one's parents and ancestors, and of the hierarchies within society: father–son, elder–junior and male–female. The Confucian classic Xiaojing ("Book of Piety"), thought to be written during the Qin or Han dynasties, has historically been the authoritative source on the Confucian tenet of xiao. The book, a conversation between Confucius and his disciple Zeng Shen, is about how to set up a good society using the principle of xiao.
+
+In more general terms, filial piety means to be good to one's parents; to take care of one's parents; to engage in good conduct not just towards parents but also outside the home so as to bring a good name to one's parents and ancestors; to perform the duties of one's job well so as to obtain the material means to support parents as well as carry out sacrifices to the ancestors; not be rebellious; show love, respect and support; the wife in filial piety must obey her husband absolutely and take care of the whole family wholeheartedly. display courtesy; ensure male heirs, uphold fraternity among brothers; wisely advise one's parents, including dissuading them from moral unrighteousness, for blindly following the parents' wishes is not considered to be xiao; display sorrow for their sickness and death; and carry out sacrifices after their death.
+
+Filial piety is considered a key virtue in Chinese culture, and it is the main concern of a large number of stories. One of the most famous collections of such stories is "The Twenty-four Filial Exemplars". These stories depict how children exercised their filial piety in the past. While China has always had a diversity of religious beliefs, filial piety has been common to almost all of them; historian Hugh D.R. Baker calls respect for the family the only element common to almost all Chinese believers.
+
+Relationships
+Social harmony results in part from every individual knowing his or her place in the natural order, and playing his or her part well. Reciprocity or responsibility (renqing) extends beyond filial piety and involves the entire network of social relations, even the respect for rulers. This is shown in the story where Duke Jing of Qi asks Confucius about government, by which he meant proper administration so as to bring social harmony:
+
+Particular duties arise from one's particular situation in relation to others. The individual stands simultaneously in several different relationships with different people: as a junior in relation to parents and elders, and as a senior in relation to younger siblings, students, and others. While juniors are considered in Confucianism to owe their seniors reverence, seniors also have duties of benevolence and concern toward juniors. The same is true with the husband and wife relationship where the husband needs to show benevolence towards his wife and the wife needs to respect the husband in return. This theme of mutuality still exists in East Asian cultures even to this day.
+
+The Five Bonds are: ruler to ruled, father to son, husband to wife, elder brother to younger brother, friend to friend. Specific duties were prescribed to each of the participants in these sets of relationships. Such duties are also extended to the dead, where the living stand as sons to their deceased family. The only relationship where respect for elders is not stressed was the friend to friend relationship, where mutual equal respect is emphasised instead. All these duties take the practical form of prescribed rituals, for instance wedding and death rituals.
+
+Junzi
+
+The junzi ('lord's son') is a Chinese philosophical term often translated as "gentleman" or "superior person" and employed by Confucius in the Analects to describe the ideal man.
+
+In Confucianism, the sage or wise is the ideal personality; however, it is very hard to become one of them. Confucius created the model of junzi, gentleman, which may be achieved by any individual. Later, Zhu Xi defined junzi as second only to the sage. There are many characteristics of the junzi: he may live in poverty, he does more and speaks less, he is loyal, obedient and knowledgeable. The junzi disciplines himself. Ren is fundamental to become a junzi.
+
+As the potential leader of a nation, a son of the ruler is raised to have a superior ethical and moral position while gaining inner peace through his virtue. To Confucius, the junzi sustained the functions of government and social stratification through his ethical values. Despite its literal meaning, any righteous man willing to improve himself may become a junzi.
+
+In contrast to the junzi, the xiaoren (, "small or petty person") does not grasp the value of virtues and seeks only immediate gains. The petty person is egotistic and does not consider the consequences of his action in the overall scheme of things. Should the ruler be surrounded by xiaoren as opposed to junzi, his governance and his people will suffer due to their small-mindness. Examples of such xiaoren individuals may range from those who continually indulge in sensual and emotional pleasures all day to the politician who is interested merely in power and fame; neither sincerely aims for the long-term benefit of others.
+
+The junzi enforces his rule over his subjects by acting virtuously himself. It is thought that his pure virtue would lead others to follow his example. The ultimate goal is that the government behaves much like a family, the junzi being a beacon of filial piety.
+
+Rectification of names
+
+Confucius believed that social disorder often stemmed from failure to perceive, understand, and deal with reality. Fundamentally, then, social disorder may stem from the failure to call things by their proper names, and his solution to this was the . He gave an explanation of this concept to one of his disciples:
+
+Zi-lu said, "The vassal of Wei has been waiting for you, in order with you to administer the government. What will you consider the first thing to be done?"
+The Master replied, "What is necessary to rectify names."
+"So! indeed!" said Zi-lu. "You are wide off the mark! Why must there be such rectification?"
+The Master said, "How uncultivated you are, Yu! The superior man [Junzi] cannot care about the everything, just as he cannot go to check all himself!
+        If names be not correct, language is not in accordance with the truth of things.
+        If language be not in accordance with the truth of things, affairs cannot be carried on to success.
+        When affairs cannot be carried on to success, proprieties and music do not flourish.
+        When proprieties and music do not flourish, punishments will not be properly awarded.
+        When punishments are not properly awarded, the people do not know how to move hand or foot.
+Therefore a superior man considers it necessary that the names he uses may be spoken appropriately, and also that what he speaks may be carried out appropriately. What the superior man requires is just that in his words there may be nothing incorrect."
+(Analects XIII, 3, tr. Legge)
+
+Xunzi chapter (22) "On the Rectification of Names" claims the ancient sage-kings chose names () that directly corresponded with actualities (), but later generations confused terminology, coined new nomenclature, and thus could no longer distinguish right from wrong. Since social harmony is of utmost importance, without the proper rectification of names, society would essentially crumble and "undertakings [would] not [be] completed."
+
+History
+
+Metaphysical antecedents
+
+According to He Guanghu, Confucianism may be identified as a continuation of the Shang-Zhou (–256 BCE) official religion, or the Chinese aboriginal religion which has lasted uninterrupted for three thousand years. Both the dynasties worshipped a supreme "godhead", called Shangdi ('Highest Deity') or Di by the Shang and Tian ('Heaven') by the Zhou. Shangdi was conceived as the first ancestor of the Shang royal house, an alternate name for him being the "Supreme Progenitor" (). Shang theology viewed the multiplicity of gods of nature and ancestors as parts of Di. Di manifests as the Wufang Shangdi with the winds () as its cosmic will. With the Zhou dynasty, which overthrew the Shang, the name for the supreme godhead became tian. While the Shang identified Shangdi as their ancestor-god to assert their claim to power by divine right, the Zhou transformed this claim into a legitimacy based on moral power, the Mandate of Heaven. In Zhou theology, Tian had no singular earthly progeny, but bestowed divine favour on virtuous rulers. Zhou kings declared that their victory over the Shang was because they were virtuous and loved their people, while the Shang were tyrants and thus were deprived of power by Tian.
+
+John C. Didier and David Pankenier relate the shapes of both the ancient Chinese characters for Di and Tian to the patterns of stars in the northern skies, either drawn, in Didier's theory by connecting the constellations bracketing the north celestial pole as a square, or in Pankenier's theory by connecting some of the stars which form the constellations of the Big Dipper and broader Ursa Major, and Ursa Minor (Little Dipper). Cultures in other parts of the world have also conceived these stars or constellations as symbols of the origin of things, the supreme godhead, divinity and royal power. The supreme godhead was also identified with the dragon, symbol of unlimited power (qi), of the protean primordial power which embodies both yin and yang in unity, associated to the constellation Draco which winds around the north ecliptic pole, and slithers between the Little and Big Dipper.
+
+Zhou traditions wane
+By the 6th century BCE, the power of Tian and the symbols that represented it on earth (architecture of cities, temples, altars and ritual vessels, and the Zhou system of rites) became "diffuse" and claimed by different potentates in the Zhou states to legitimise economic, political, and military ambitions. Communication with the divine no longer was an exclusive privilege of the Zhou royal house, but might be bought by anyone able to afford the elaborate ceremonies and the old and new rites required to access the authority of Tian.
+
+Besides the waning Zhou ritual system, what may be defined as  traditions, or traditions outside of the official system, developed as attempts to access the will of Tian. As central political authority crumbled in the wake of the collapse of the Western Zhou, the population lost faith in the official tradition, which was no longer perceived as an effective way to communicate with Heaven. The traditions of the  and of the Yijing flourished. Chinese thinkers, faced with this challenge to legitimacy, diverged in a "Hundred Schools of Thought", each positing its own philosophical lens for understanding the processes of the world.
+
+Confucius (551–479 BCE) appeared in this period of political reconfiguration and spiritual questioning. He was educated in Shang–Zhou traditions, which he contributed to transmit and reformulate giving centrality to self-cultivation and agency of humans, and the educational power of the self-established individual in assisting others to establish themselves (the  ). As the Zhou reign collapsed, traditional values were abandoned resulting in a period of perceived moral decline. Confucius saw an opportunity to reinforce values of compassion and tradition into society, with the intended goal of reconstructing what he believed to be a lost perfect moral order of high antiquity. Disillusioned with the culture, opposing scholars, and religious authorities of the time, he began to advance an ethical interpretation of traditional Zhou religion. In his view, the power of Tian is pervasive, and responds positively to the sincere heart driven by humaneness and rightness, decency and altruism. Confucius conceived these qualities as the foundation needed to restore socio-political harmony. Like many contemporaries, Confucius saw ritual practices as efficacious ways to access Tian, but he thought that the crucial knot was the reverent inner state that participants enter prior to engaging in the ritual acts. Confucius is said to have amended and recodified the classical books inherited from the Xia-Shang-Zhou dynasties, and to have composed the Spring and Autumn Annals.
+
+Confucianism rises
+Philosophers in the Warring States period, both focused on state-endorsed ritual and non-aligned to state ritual built upon Confucius's legacy, compiled in the Analects, and formulated the classical metaphysics that became the lash of Confucianism. In accordance with Confucius, they identified mental tranquility as the state of Tian, or , which in each individual is the Heaven-bestowed divine power to rule one's own life and the world. They also extended the theory, proposing the oneness of production and reabsorption into the cosmic source, and the possibility to understand and therefore reattain it through correct state of mind. This line of thought would have influenced all Chinese individual and collective-political mystical theories and practices thereafter.
+
+In the Han dynasty, Confucians beginning with Dong Zhongshu synthesised Warring States Confucianism with ideas of yin and yang, and wuxing, as well as folk superstition and the prior schools that led up to the School of Naturalists.
+
+In the 460s, Confucianism competed with Chinese Buddhism and "traditional Confucianism" was "a broad cosmology that was as much about personal ethics as about spiritual beliefs" and had roots that went back to Confucianist philosophers from over a thousand years before.
+
+Organisation and liturgy
+
+Since the 2000s, there has been a growing identification of the Chinese intellectual class with Confucianism. In 2003, the Confucian intellectual Kang Xiaoguang published a manifesto in which he made four suggestions: Confucian education should enter official education at any level, from elementary to high school; the state should establish Confucianism as the state religion by law; Confucian religion should enter the daily life of ordinary people through standardisation and development of doctrines, rituals, organisations, churches and activity sites; the Confucian religion should be spread through non-governmental organisations. Another modern proponent of the institutionalisation of Confucianism in a state church is Jiang Qing.
+
+In 2005, the Center for the Study of Confucian Religion was established, and guoxue started to be implemented in public schools on all levels. Being well received by the population, even Confucian preachers have appeared on television since 2006. The most enthusiastic New Confucians proclaim the uniqueness and superiority of Confucian Chinese culture, and have generated some popular sentiment against Western cultural influences in China.
+
+The idea of a "Confucian church" as the state religion of China has roots in the thought of Kang Youwei, an exponent of the early New Confucian search for a regeneration of the social relevance of Confucianism, at a time when it was de-institutionalised with the collapse of the Qing dynasty and the Chinese empire. Kang modeled his ideal "Confucian Church" after European national Christian churches, as a hierarchic and centralised institution, closely bound to the state, with local church branches, devoted to the worship and the spread of the teachings of Confucius.
+
+In contemporary China, the Confucian revival has developed into various interwoven directions: the proliferation of Confucian schools or academies, the resurgence of Confucian rites, and the birth of new forms of Confucian activity on the popular level, such as the Confucian communities (). Some scholars also consider the reconstruction of lineage churches and their ancestral temples, as well as cults and temples of natural and national gods within broader Chinese traditional religion, as part of the renewal of Confucianism.
+
+Other forms of revival are salvationist folk religious movements groups with a specifically Confucian focus, or Confucian churches, for example the  of Beijing, the  of Shanghai, Confucian Shenism (also known as the "phoenix churches"), the Confucian Fellowship () in northern Fujian which has spread rapidly over the years after its foundation, and ancestral temples of the Kong kin (the lineage of the descendants of Confucius himself) operating as Confucian-teaching churches.
+
+Also, the Hong Kong Confucian Academy, one of the direct heirs of Kang Youwei's Confucian Church, has expanded its activities to the mainland, with the construction of statues of Confucius, Confucian hospitals, restoration of temples and other activities. In 2009, Zhou Beichen founded another institution which inherits the idea of Kang Youwei's Confucian Church, the Holy Hall of Confucius () in Shenzhen, affiliated with the Federation of Confucian Culture of Qufu City. It was the first of a nationwide movement of congregations and civil organisations that was unified in 2015 in the Holy Confucian Church. The first spiritual leader of the church is the scholar Jiang Qing, the founder and manager of the Yangming Confucian Abode (), a Confucian academy in Guiyang, Guizhou.
+
+Chinese folk religious temples and kinship ancestral shrines may, on peculiar occasions, choose Confucian liturgy (called  or  led by Confucian ritual masters () to worship the gods, instead of Taoist or popular ritual. "Confucian businessmen" (, also "refined businessman") is a recently "rediscovered" concept defining people of the economic-entrepreneurial elite who recognise their social responsibility and therefore apply Confucian culture to their business.
+
+Confucianists historically tried to proselytize to others, although this is rarely done in modern times. Given Confucianism's place of importance in historical Chinese governments, the argument has been made that Imperial China's wars were Confucianism's wars, but the connection between Confucianism and war is not so direct or simple. Modern Confucianism is the descendant of movements that greatly changed how they practiced the teachings of Confucius and his disciples from previous orthodox teachings.
+
+Governance
+
+A key Confucian concept is that in order to govern others one must first govern oneself according to the universal order. When actual, the king's personal virtue (de) spreads beneficent influence throughout the kingdom. This idea is developed further in the Great Learning and is tightly linked with the Taoist concept of wu wei: the less the king does, the more gets done. By being the "calm center" around which the kingdom turns, the king allows everything to function smoothly and avoids having to tamper with the individual parts of the whole.
+
+This idea may be traced back to the ancient shamanic beliefs of the king being the axle between the sky, human beings, and the Earth. The emperors of China were considered agents of Heaven, endowed with the Mandate of Heaven, one of the most vital concepts in imperial-era political theory. Some Confucianists believed they held the power to define the hierarchy of divinities, by bestowing titles upon mountains, rivers and dead people, acknowledging them as powerful and therefore establishing their cults.
+
+Confucianism, despite supporting the importance of obeying national authority, places this obedience under absolute moral principles that curbed the willful exercise of power, rather than being unconditional. Submission to authority was only taken within the context of the moral obligations that rulers had toward their subjects, in particular ren. Confucians—including the most pro-authoritarian scholars such as Xunzi—have always recognised the right of revolution against tyranny.
+
+Meritocracy
+
+Although Confucius claimed that he never invented anything but was only transmitting ancient knowledge (Analects 7.1), he did produce a number of new ideas. Many European and American admirers such as Voltaire and Herrlee G. Creel point to the revolutionary idea of replacing nobility of blood with nobility of virtue. Junzi ('lord's son'), which originally signified the younger, non-inheriting, offspring of a noble, became, in Confucius's work, an epithet having much the same meaning and evolution as the English "gentleman".
+
+A virtuous commoner who cultivates his qualities may be a "gentleman", while a shameless son of the king is only a "petty person". That Confucius admitted students of different classes as disciples is a clear demonstration that he fought against the feudal structures that defined pre-imperial Chinese society.
+
+Another new idea, that of meritocracy, led to the introduction of the imperial examination system in China. This system allowed anyone who passed an examination to become a government officer, a position which would bring wealth and honour to the whole family. The Chinese imperial examination system started in the Sui dynasty. Over the following centuries the system grew until finally almost anyone who wished to become an official had to prove his worth by passing a set of written government examinations.
+
+Confucian political meritocracy is not merely a historical phenomenon. The practice of meritocracy still exists across China and East Asia today, and a wide range of contemporary intellectuals—from Daniel Bell to Tongdong Bai, Joseph Chan, and Jiang Qing—defend political meritocracy as a viable alternative to liberal democracy.
+
+In Just Hierarchy, Daniel Bell and Wang Pei argue that hierarchies are inevitable. Faced with ever-increasing complexity at scale, modern societies must build hierarchies to coordinate collective action and tackle long-term problems such as climate change. In this context, people need not—and should not—want to flatten hierarchies as much as possible. They ought to ask what makes political hierarchies just and use these criteria to decide the institutions that deserve preservation, those that require reform, and those that need radical transformation. They call this approach "progressive conservatism", a term that reflects the ambiguous place of the Confucian tradition within the Left-Right dichotomy.
+
+Bell and Wang propose two justifications for political hierarchies that do not depend on a "one person, one vote" system. First is raw efficiency, which may require centralized rule in the hands of the competent few. Second, and most important, is serving the interests of the people (and the common good more broadly). In Against Political Equality, Tongdong Bai complements this account by using a proto-Rawlsian "political difference principle". Just as Rawls claims that economic inequality is justified so long as it benefits those at the bottom of the socioeconomic ladder, so Bai argues that political inequality is justified so long as it benefits those materially worse off.
+
+Bell, Wang, and Bai all criticize liberal democracy to argue that government  the people may not be government  the people in any meaningful sense of the term. They argue that voters tend to act in irrational, tribal, short-termist ways; they are vulnerable to populism and struggle to account for the interests of future generations. In other words, at a minimum, democracy needs Confucian meritocratic checks.
+
+In The China Model, Bell argues that Confucian political meritocracy provides—and has provided—a blueprint for China's development. For Bell, the ideal according to which China should reform itself (and has reformed itself) follows a simple structure: Aspiring rulers first pass hyper-selective examinations, then have to rule well at the local level to be promoted to positions as the provincial level, then have to excel at the provincial level to access positions at the national level, and so on. This system aligns with what Harvard historian James Hankins calls "virtue politics", or the idea that institutions should be built to select the most competent and virtuous rulers—as opposed to institutions concerned first and foremost with limiting the power of rulers.
+
+While contemporary defenders of Confucian political meritocracy all accept this broad frame, they disagree with each other on three main questions: institutional design, the means by which meritocrats are promoted, and the compatibility of Confucian political meritocracy with liberalism.
+
+Institutional design
+Bell and Wang favour a system in which officials at the local level are democratically elected and higher-level officials are promoted by peers. As Bell puts it, he defends "democracy at the bottom, experimentation in the middle, and meritocracy at the top." Bell and Wang argue that this combination conserves the main advantages of democracy—involving the people in public affairs at the local level, strengthening the legitimacy of the system, forcing some degree of direct accountability, etc.—while preserving the broader meritocratic character of the regime.
+
+Jiang Qing, by contrast, imagines a tricameral government with one chamber selected by the people (the ), one chamber composed of Confucian meritocrats selected via examination and gradual promotion (the ), and one body made up of descendants of Confucius himself (the ). Jiang's aim is to construct a legitimacy that will go beyond what he sees as the atomistic, individualist, and utilitarian ethos of modern democracies and ground authority in something sacred and traditional. While Jiang's model is closer to an ideal theory than Bell's proposals, it represents a more traditionalist alternative.
+
+Tongdong Bai presents an in-between solution by proposing a two-tiered bicameral system. At the local level, as with Bell, Bai advocates Deweyan participatory democracy. At the national level, Bai proposes two chambers: one of meritocrats (selected by examination, by examination and promotion, from leaders in certain professional fields, etc.), and one of representatives elected by the people. While the lower house does not have any legislative power per se, it acts as a popular accountability mechanism by championing the people and putting pressure on the upper house. More generally, Bai argues that his model marries the best of meritocracy and democracy. Following Dewey's account of democracy as a way of life, he points to the participatory features of his local model: citizens still get to have a democratic lifestyle, participate in political affairs, and be educated as "democratic men". Similarly, the lower house allows citizens to be represented, have a voice in public affairs (albeit a weak one), and ensure accountability. Meanwhile, the meritocratic house preserves competence, statesmanship, and Confucian virtues.
+
+Promotion system
+Defenders of Confucian political meritocracy generally champion a system in which rulers are selected on the basis of intellect, social skills, and virtue. Bell proposes a model wherein aspiring meritocrats take hyper-selective exams and prove themselves at the local levels of government before reaching the higher levels of government, where they hold more centralized power. In his account, the exams select for intellect and other virtues—for instance, the ability to argue three different viewpoints on a contentious issue may indicate a certain degree of openness. Tongdong Bai's approach incorporates different ways to select members of the meritocratic house, from exams to performance in various fields—business, science, administration, and so on. In every case, Confucian meritocrats draw on China's extensive history of meritocratic administration to outline the pros and cons of competing methods of selection.
+
+For those who, like Bell, defend a model in which performance at the local levels of government determines future promotion, an important question is how the system judges who "performs best". In other words, while examinations may ensure that early-career officials are competent and educated, how is it thereafter ensured that only those who rule well get promoted? The literature opposes those who prefer evaluation by peers to evaluation by superiors, with some thinkers including quasi-democratic selection mechanisms along the way. Bell and Wang favour a system in which officials at the local level are democratically elected and higher-level officials are promoted by peers. Because they believe that promotion should depend upon peer evaluations only, Bell and Wang argue against transparency—i.e. the public should not know how officials are selected, since ordinary people are in no position to judge officials beyond the local level. Others, like Jiang Qing, defend a model in which superiors decide who gets promoted; this method is in line with more traditionalist strands of Confucian political thought, which place a greater emphasis on strict hierarchies and epistemic paternalism—that is, the idea that older and more experienced people know more.
+
+Compatibility with liberalism and democracy, and critique of political meritocracy
+Another key question is whether Confucian political thought is compatible with liberalism. Tongdong Bai, for instance, argues that while Confucian political thought departs from the "one person, one vote" model, it can conserve many of the essential characteristics of liberalism, such as freedom of speech and individual rights. In fact, both Daniel Bell and Tongdong Bai hold that Confucian political meritocracy can tackle challenges that liberalism wants to tackle, but cannot by itself. At the cultural level, for instance, Confucianism, its institutions, and its rituals offer bulwarks against atomization and individualism. At the political level, the non-democratic side of political meritocracy is—for Bell and Bai—more efficient at addressing long-term questions such as climate change, in part because the meritocrats do not have to worry about the whims of public opinion.
+
+Joseph Chan defends the compatibility of Confucianism with both liberalism and democracy. In his book Confucian Perfectionism, he argues that Confucians can embrace both democracy and liberalism on instrumental grounds; that is, while liberal democracy may not be valuable for its own sake, its institutions remain valuable—particularly when combined with a broadly Confucian culture—to serve Confucian ends and inculcate Confucian virtues.
+
+Other Confucians have criticized Confucian meritocrats like Bell for their rejection of democracy. For them, Confucianism does not have to be premised on the assumption that meritorious, virtuous political leadership is inherently incompatible with popular sovereignty, political equality and the right to political participation. These thinkers accuse the meritocrats of overestimating the flaws of democracy, mistaking temporary flaws for permanent and inherent features, and underestimating the challenges that the construction of a true political meritocracy poses in practice—including those faced by contemporary China and Singapore. Franz Mang claims that, when decoupled from democracy, meritocracy tends to deteriorate into an oppressive regime under putatively "meritorious" but actually "authoritarian" rulers; Mang accuses Bell's China model of being self-defeating, as—Mang claims—the CCP's authoritarian modes of engagement with the dissenting voices illustrate. He Baogang and Mark Warren add that "meritocracy" should be understood as a concept describing a regime's character rather than its type, which is determined by distribution of political power—on their view, democratic institutions can be built which are meritocratic insofar as they favour competence.
+
+Roy Tseng, drawing on the New Confucians of the twentieth century, argues that Confucianism and liberal democracy can enter into a dialectical process, in which liberal rights and voting rights are rethought into resolutely modern, but nonetheless Confucian ways of life. This synthesis, blending Confucians rituals and institutions with a broader liberal democratic frame, is distinct from both Western-style liberalism—which, for Tseng, suffers from excessive individualism and a lack of moral vision—and from traditional Confucianism—which, for Tseng, has historically suffered from rigid hierarchies and sclerotic elites. Against defenders of political meritocracy, Tseng claims that the fusion of Confucian and democratic institutions can conserve the best of both worlds, producing a more communal democracy which draws on a rich ethical tradition, addresses abuses of power, and combines popular accountability with a clear attention to the cultivation of virtue in elites.
+
+Influence
+
+In 17th-century Europe
+
+The works of Confucius were translated into European languages through the agency of Jesuit missionaries stationed in China. Matteo Ricci was among the very earliest to report on the thoughts of Confucius, and father Prospero Intorcetta wrote about the life and works of Confucius in Latin in 1687.
+
+Translations of Confucian texts influenced European thinkers of the period, particularly among the Deists and other philosophical groups of the Enlightenment who were interested by the integration of the system of morality of Confucius into Western civilization.
+
+Confucianism influenced the German philosopher Gottfried Wilhelm Leibniz, who was attracted to the philosophy because of its perceived similarity to his own. It is postulated that certain elements of Leibniz's philosophy, such as "simple substance" and "Pre-established harmony", were borrowed from his interactions with Confucianism. 
+
+The French philosopher Voltaire, Leibniz's intellectual rival, was also influenced by Confucius, seeing the concept of Confucian rationalism as an alternative to Christian dogma. He praised Confucian ethics and politics, portraying the sociopolitical hierarchy of China as a model for Europe:
+
+On Islamic thought
+From the late 17th century onwards a whole body of literature known as the Han Kitab developed amongst the Hui Muslims of China who infused Islamic thought with Confucianism. Especially the works of Liu Zhi such as Tianfang Dianli () sought to harmonise Islam with not only Confucianism but also with Taoism and is considered to be one of the crowning achievements of the Chinese Islamic culture.
+
+In modern times
+Important military and political figures in modern Chinese history continued to be influenced by Confucianism, like the Muslim warlord Ma Fuxiang. The New Life Movement in the early 20th century was also influenced by Confucianism.
+
+Referred to variously as the Confucian hypothesis and as a debated component of the more all-encompassing Asian Development Model, there exists among political scientists and economists a theory that Confucianism plays a large latent role in the ostensibly non-Confucian cultures of modern-day East Asia, in the form of the rigorous work ethic it endowed those cultures with. These scholars have held that, if not for Confucianism's influence on these cultures, many of the people of the East Asia region would not have been able to modernise and industrialise as quickly as Singapore, Malaysia, Hong Kong, Taiwan, Japan, South Korea and even China have done.
+
+For example, the impact of the Vietnam War on Vietnam was devastating, but over the last few decades Vietnam has been re-developing in a very fast pace. Most scholars attribute the origins of this idea to futurologist Herman Kahn's World Economic Development: 1979 and Beyond.
+
+Other studies, for example Cristobal Kay's Why East Asia Overtook Latin America: Agrarian Reform, Industrialization, and Development, have attributed the Asian growth to other factors, for example the character of agrarian reforms, "state-craft" (state capacity), and interaction between agriculture and industry.
+
+Historical and current Confucianists were/are often environmentalists out of their respect for tian and the other aspects of nature and the "Principle" that comes from their unity and, more generally, harmony as a whole, which is "the basis for a sincere mind."
+
+On Chinese martial arts
+After Confucianism had become the official 'state religion' in China, its influence penetrated all walks of life and all streams of thought in Chinese society for the generations to come. This did not exclude martial arts culture. Though in his own day, Confucius had rejected the practice of Martial Arts (with the exception of Archery), he did serve under rulers who used military power extensively to achieve their goals. In later centuries, Confucianism heavily influenced many educated martial artists of great influence, such as Sun Lutang, especially from the 19th century onwards, when bare-handed martial arts in China became more widespread and had begun to more readily absorb philosophical influences from Confucianism, Buddhism and Daoism.
+
+Criticism
+
+Confucius and Confucianism were opposed or criticised from the start, including Laozi's philosophy and Mozi's critique, and Legalists such as Han Fei ridiculed the idea that virtue would lead people to be orderly. In modern times, waves of opposition and vilification showed that Confucianism, instead of taking credit for the glories of Chinese civilisation, now had to take blame for its failures. The Taiping Rebellion described Confucianism sages as well as gods in Taoism and Buddhism as devils.
+
+Contradiction with modernist values 
+
+In the New Culture Movement, Lu Xun criticised Confucianism for shaping Chinese people into the condition they had reached by the late Qing dynasty: his criticisms are expressed metaphorically in the work "Diary of a Madman", in which traditional Chinese Confucian society is portrayed as feudalistic, hypocritical, socially cannibalistic, despotic, fostering a "slave mentality" favouring despotism, lack of critical thinking and blind obedience and worship of authority, fuelling a form of "Confucian authoritarianism" which persists into the present day. Leftists during the Cultural Revolution described Confucius as the representative of the slave-owning class.
+
+In South Korea, there has long been criticism. Some South Koreans believe Confucianism has not contributed to the modernisation of South Korea. For example, South Korean writer Kim Kyong-il wrote an essay  entitled "Confucius Must Die For the Nation to Live" (, gongjaga jug-eoya naraga sanda). Kim said that filial piety is one-sided and blind, and if it continues, social problems will continue as government keeps forcing Confucian filial obligations onto families.
+
+Women in Confucian thought
+
+Confucianism "largely defined the mainstream discourse on gender in China from the Han dynasty onward." The gender roles prescribed in the Three Obediences and Four Virtues became a cornerstone of the family, and thus, societal stability. The Three Obediences and Four Virtues is one of the moral standards for feudal etiquette to bind women. Starting from the Han period, Confucians began to teach that a virtuous woman was supposed to follow the males in her family: the father before her marriage, the husband after she marries, and her sons in widowhood. In the later dynasties, more emphasis was placed on the virtue of chastity. The Song dynasty Confucian Cheng Yi stated that: "To starve to death is a small matter, but to lose one's chastity is a great matter." It was during the Song Dynasty that the value of chastity was so severe, Confucian scholars criminalized the remarriage of widows. widows were revered and memorialised during the Ming and Qing periods.The principle of chaste widowhood was made an official institution during the Ming Dynasty. This "cult of chastity" accordingly condemned many widows to poverty and loneliness by placing a social stigma on remarriage. Though the repercussions for widows at times went beyond poverty and loneliness, as for some the preservation of chastity resulted in suicide. The ideal of a chaste widow became an extremely high honor and esteem, especially for a woman who chose to end her life after her husband’s death. Many instances of such acts were recorded in, Biographies of Virtuous Women, “a collection of stories of women who distinguished themselves by committing suicide after their husband’s deaths to guard their chastity and purity”. Though it can be contested whether all these instances can be deemed self-sacrificing for the virtue of chastity, as it became common practice for women to be forced to commit suicide after their husband’s death. This resulted from the honor which chaste widowhood garnered, lending itself to the husband's family as well as his clan or village.
+
+For years, many modern scholars have regarded Confucianism as a sexist, patriarchal ideology that was historically damaging to Chinese women. It has also been argued by some Chinese and Western writers that the rise of neo-Confucianism during the Song dynasty had led to a decline of status of women. Some critics have also accused the prominent Song neo-Confucian scholar Zhu Xi for believing in the inferiority of women and that men and women need to be kept strictly separate, while Sima Guang also believed that women should remain indoors and not deal with the matters of men in the outside world. Finally, scholars have discussed the attitudes toward women in Confucian texts such as Analects. In a much-discussed passage, women are grouped together with , meaning people of low status or low moral) and described as being difficult to cultivate or deal with. Many traditional commentators and modern scholars have debated over the precise meaning of the passage, and whether Confucius referred to all women or just certain groups of women.
+
+Further analysis suggests, however, that women's place in Confucian society may be more complex. During the Han dynasty period, the influential Confucian text Lessons for Women was written by Ban Zhao (45–114 CE) to instruct her daughters how to be proper Confucian wives and mothers, that is, to be silent, hard-working, and compliant. She stresses the complementarity and equal importance of the male and female roles according to yin-yang theory, but she clearly accepts the dominance of the male. However, she does present education and literary power as important for women. In later dynasties, a number of women took advantage of the Confucian acknowledgment of education to become independent in thought.
+
+Joseph A. Adler points out that "Neo-Confucian writings do not necessarily reflect either the prevailing social practices or the scholars' own attitudes and practices in regard to actual women." Matthew Sommers has also indicated that the Qing dynasty government began to realise the utopian nature of enforcing the "cult of chastity" and began to allow practices such as widow remarrying to stand. Moreover, some Confucian texts like Dong Zhongshu's Luxuriant Dew of the Spring and Autumn Annals have passages that suggest a more equal relationship between a husband and his wife. More recently, some scholars have also begun to discuss the viability of constructing a "Confucian feminism".
+
+Catholic controversy over Chinese rites
+
+Ever since Europeans first encountered Confucianism, the issue of how Confucianism should be classified has been subject to debate. In the 16th and the 17th centuries, the earliest European arrivals in China, the Christian Jesuits, considered Confucianism to be an ethical system, not a religion, and one that was compatible with Christianity. The Jesuits, including Matteo Ricci, saw Chinese rituals as "civil rituals" that could co-exist alongside the spiritual rituals of Catholicism.
+
+By the early 18th century, this initial portrayal was rejected by the Dominicans and Franciscans, creating a dispute among Catholics in East Asia that was known as the "Rites Controversy". The Dominicans and Franciscans argued that Chinese ancestral worship was a form of idolatry that was contradictory to the tenets of Christianity. This view was reinforced by Pope Benedict XIV, who ordered a ban on Chinese rituals, though this ban was re-assessed and repealed in 1939 by Pope Pius XII, provided that such traditions harmonize with the true and authentic spirit of the liturgy.
+
+Some critics view Confucianism as definitely pantheistic and nontheistic, in that it is not based on the belief in the supernatural or in a personal god existing separate from the temporal plane. Confucius views about tian and about the divine providence ruling the world, can be found above (in this page) and in Analects 6:26, 7:22, and 9:12, for example. On spirituality, Confucius said to Chi Lu, one of his students: "You are not yet able to serve men, how can you serve spirits?" Attributes such as ancestor worship, ritual, and sacrifice were advocated by Confucius as necessary for social harmony; these attributes may be traced to the traditional Chinese folk religion.
+
+Scholars recognise that classification ultimately depends on how one defines religion. Using stricter definitions of religion, Confucianism has been described as a moral science or philosophy. But using a broader definition, such as Frederick Streng's characterisation of religion as "a means of ultimate transformation", Confucianism could be described as a "sociopolitical doctrine having religious qualities." With the latter definition, Confucianism is religious, even if non-theistic, in the sense that it "performs some of the basic psycho-social functions of full-fledged religions."
+
+See also
+
+Notes
+
+Citations
+
+Bibliography
+
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+  
+Volume I: The Ancient Eurasian World and the Celestial Pivot.
+Volume II: Representations and Identities of High Powers in Neolithic and Bronze China.
+Volume III: Terrestrial and Celestial Transformations in Zhou and Early-Imperial China.
+ .
+ 
+ .
+ 
+ 
+ 
+ .
+ .
+ 
+ 
+ 
+ .
+ 
+ 
+ 
+ 
+ .
+ .
+
+Translations of texts attributed to Confucius
+
+Analects (Lun Yu)
+ Confucian Analects (1893) Translated by James Legge.
+ The Analects of Confucius (1915; rpr. NY: Paragon, 1968). Translated by William Edward Soothill.
+ The Analects of Confucius: A Philosophical Translation (New York: Ballantine, 1998). Translated by Roger T. Ames, Henry Rosemont.
+ Confucius: The Analects (Lun yü) (London: Penguin, 1979; rpr. Hong Kong: Chinese University Press, 1992). Translated by D.C. Lau.
+ The Analects of Confucius (Lun Yu) (Oxford: Oxford University Press, 1997). Translated by Chichung Huang.
+ The Analects of Confucius (New York: W.W. Norton, 1997). Translated by Simon Leys.
+ Analects: With Selections from Traditional Commentaries (Indianapolis: Hackett Publishing, 2003). Translated by Edward Slingerland.
+
+External links
+
+ 
+ 
+ Stanford Encyclopedia of Philosophy Entry: Confucius
+ Interfaith Online: Confucianism
+ Confucian Documents at the Internet Sacred Texts Archive.
+ Oriental Philosophy, "Topic:Confucianism"
+
+Institutional
+ China Confucian Philosophy
+ China Confucian Religion
+ China Kongzi Network
+
+ 
+Chinese philosophy
+East Asian philosophy
+East Asian religions
+Eponymous political ideologies
+Religious ethics
+Religion in China
+Schools and traditions in ancient Chinese philosophy
+Three teachings
+Chinese philosophy originates in the Spring and Autumn period and Warring States period, during a period known as the "Hundred Schools of Thought", which was characterized by significant intellectual and cultural developments. Although much of Chinese philosophy begun in the Warring States period, elements of Chinese philosophy have existed for several thousand years. Some can be found in the I Ching (the Book of Changes), an ancient compendium of divination, which dates back to at least 672 BCE.
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+It was during the Warring States era that what Sima Tan termed the major philosophical schools of China—Confucianism, Legalism, and Taoism—arose, along with philosophies that later fell into obscurity, like Agriculturalism, Mohism, Chinese Naturalism, and the Logicians. Even in modern society, Confucianism is still the creed of etiquette for Chinese society.
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+Chinese philosophy as a philosophy
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+The debate over whether the thought of ancient Chinese masters should be called philosophy has been discussed since the introduction of this academic discipline into China. See Legitimacy of Chinese philosophy for details.
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+Early beliefs
+Early Shang dynasty thought was based on cycles like the 10 stems and 12 earthly branches. This notion stems from what the people of the Shang dynasty could observe around them: day and night cycled, the seasons progressed again and again, and even the moon waxed and waned until it waxed again. Thus, this notion, which remained relevant throughout Chinese history, reflects the order of nature. In juxtaposition, it also marks a fundamental distinction from western philosophy, in which the dominant view of time is a linear progression. During the Shang, Ancestor worship was present and universally recognized.
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+When the Shang were overthrown by the Zhou a new political, religious and philosophical concept was introduced called the Mandate of Heaven. This mandate was said to be taken when rulers became unworthy of their position and provided a justification for Zhou rule it is said that the Duke of Zhou made the early solar terms by measuring with a gnomon that was added to make the complete solar terms. He is also said to have used try squares and wrote the Zhoubi Suanjing with his astrologer. Several early beliefs might be found in the Guicang and perhaps the earliest Chinese book, the small calendar of the Xia in Da Dai Liji, though debated to exist the Xia dynasty is said to be its origin.
+
+Overview
+Confucianism developed during the Spring and Autumn period from the teachings of the Chinese philosopher Confucius (551–479 BCE), who considered himself a retransmitter of Zhou values. His philosophy concerns the fields of ethics and politics, emphasizing personal and governmental morality, correctness of social relationships, justice, traditionalism, and sincerity. The Analects stress the importance of ritual, but also the importance of ren, which loosely translates as "human-heartedness", Confucianism, along with Legalism, is responsible for creating the world's first meritocracy, which holds that one's status should be determined by education and character rather than ancestry, wealth, or friendship. Confucianism was and continues to be a major influence in Chinese culture, the state of China and the surrounding areas of East Asia.
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+Before the Han dynasty the largest rivals to Confucianism were Chinese Legalism, and Mohism. Confucianism largely became the dominant philosophical school of China during the early Han dynasty following the replacement of its contemporary, the more Taoist Huang-Lao. Legalism as a coherent philosophy disappeared largely due to its relationship with the unpopular authoritarian rule of Qin Shi Huang, however, many of its ideas and institutions would continue to influence Chinese philosophy throughout the Han dynasty and after.
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+Mohism, though initially popular due to its emphasis on brotherly love versus harsh Legalism, fell out of favour during the Han dynasty due to the efforts of Confucians in establishing their views as political orthodoxy.  The Six Dynasties era saw the rise of the Xuanxue philosophical school and the maturation of Chinese Buddhism, which had entered China from India during the Late Han dynasties. By the time of the Tang dynasty five-hundred years after Buddhism's arrival into China, it had transformed into a thoroughly Chinese religious philosophy dominated by the school of Zen Buddhism. Neo-Confucianism became highly popular during the Song dynasty and Ming dynasty due in large part to the eventual combination of Confucian and Buddhist and even Taoist Philosophy.
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+During the 19th and 20th centuries, Chinese philosophy integrated concepts from Western philosophy. Anti-Qing dynasty revolutionaries, involved in the Xinhai Revolution, saw Western philosophy as an alternative to traditional philosophical schools; students in the May Fourth Movement called for completely abolishing the old imperial institutions and practices of China.  During this era, Chinese scholars attempted to incorporate Western philosophical ideologies such as democracy, Marxism, socialism, liberalism, republicanism, anarchism and nationalism into Chinese philosophy. The most notable examples are Sun Yat-sen's Three Principles of the People ideology and Mao Zedong's Maoism, a variant of Marxism–Leninism. In the modern People's Republic of China, the official ideology is Deng Xiaoping's "market economy socialism".
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+Although the People's Republic of China has been historically hostile to the philosophy of ancient China, the influences of past are still deeply ingrained in the Chinese culture. In the post-Chinese economic reform era, modern Chinese philosophy has reappeared in forms such as New Confucianism. As in Japan, philosophy in China has become a melting pot of ideas. It accepts new concepts, while attempting also to accord old beliefs their due. Chinese philosophy still carries profound influence amongst the people of East Asia, and even Southeast Asia.
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+Ancient philosophy
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+Spring and Autumn period 
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+Around 500 BCE, after the Zhou state weakened and China moved into the Spring and Autumn period, the classic period of Chinese philosophy began. This is known as the Hundred Schools of Thought (; zhūzǐ bǎijiā; "various scholars, hundred schools"). This period is considered the golden age of Chinese philosophy. Of the many schools founded at this time and during the subsequent Warring States period, the four most influential ones were Confucianism, Daoism (often spelled "Taoism"), Mohism and Legalism.
+
+Confucianism 
+
+Confucianism is a philosophical school developed from the teachings of Confucius collected and written by his disciples after his death in The Analects, and in the Warring States period, Mencius in The Mencius and Xunzi in The Xunzi. It is a system of moral, social, political, and religious thought that has had tremendous influence on Chinese history, thought, and culture down to the 20th century. Some Westerners have considered it to have been the "state religion" of imperial China because of its lasting influence on Asian culture. Its influence also spread to Korea, Japan, Vietnam and many other Asian countries.
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+Confucianism reached its peak of influence during the Tang and Song dynasties under a rebranded Confucianism called Neo-Confucianism. Confucius expanded on the already present ideas of Chinese religion and culture to reflect the time period and environment of political chaos during the Warring States period. Because Confucius embedded the Chinese culture so heavily into his philosophy it was able to resonate with the people of China. This high approval of Confucianism can be seen through the reverence of Confucius in modern-day China.
+
+The major Confucian concepts include filial piety, loyalty (),  li (ritual), ren (humanity or humaneness), the rectification of names (i.e., to ensure everything is what its name implies it should be),. Confucius taught both positive and negative versions of the Golden Rule. The concepts yin and yang represent two opposing forces that are permanently in conflict with each other, leading to perpetual contradiction and change. The Confucian idea of "Rid of the two ends, take the middle" is a Chinese equivalent of the idea of "thesis, antithesis, and synthesis", often attributed to Hegel, which is a way of reconciling opposites, arriving at some middle ground combining the best of both.
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+Confucius heavily emphasized the idea of microcosms in society (subunits of family and community) success's were the foundations for a successful state or country. Confucius believed in the use of education to further knowledge the people in ethics, societal behavior, and reverence in other humans. With the combination of education, successful family, and his ethical teachings he believed he could govern a well established society in China.
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+Taoism 
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+Taoism arose as a philosophy and later also developed into a religion based on the texts the Tao Te Ching (ascribed to Laozi) and the Zhuangzi (partly ascribed to Zhuang Zhou). The word Tao (; also transliterated as Dao) literally means 'path' or 'way'. However, in Taoism it refers more often to a meta-physical force that encompasses the entire universe but which cannot be described nor felt.
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+All major Chinese philosophical schools have investigated the correct Way to go about a moral life, but in Taoism it takes on the most abstract meanings, leading this school to be named after it. It advocated nonaction (wu wei), the strength of softness, spontaneity, and relativism. Although it serves as a rival to Confucianism, a school of active morality, this rivalry is compromised and given perspective by the idiom "practice Confucianism on the outside, Taoism on the inside."
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+Most of Taoism's focus is on the notion that human attempts to make the world better actually make the world worse. Therefore, it is better to strive for harmony, minimising potentially harmful interference with nature or in human affairs.
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+Warring States period
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+Legalism 
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+Philosopher Han Fei synthesized together earlier the methods of his predecessors, which famous historian Sima Tan posthumously termed Legalism. With an essential principle like "when the epoch changed, the ways changed", late pre-Han dynasty reformers emphasized rule by law.
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+In Han Fei's philosophy, a ruler should govern his subjects by the following trinity:
+Fa (): law or principle.
+Shu (): method, tactic, art, or statecraft.
+Shi (): legitimacy, power, or charisma.
+
+What has been termed by some as the intrastate Realpolitik of the Warring States period was highly progressive, and extremely critical of the Confucian and Mohist schools. But that of the Qin dynasty would be blamed for creating a totalitarian society, thereby experiencing decline. Its main motto is: "Set clear strict laws, or deliver harsh punishment". In Han Fei's philosophy the ruler possessed authority regarding reward and penalty, enacted through law. Shang Yang and Han Fei promoted absolute adherence to the law, regardless of the circumstances or the person. Ministers were only to be rewarded if their words were accurate to the results of their proposals. Legalism, in accordance with Shang Yang's interpretation, could encourage the state to be a militaristic autarky.
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+Naturalists
+
+The School of Naturalists or the School of Yin-yang () was a Warring States era philosophy that synthesized the concepts of yin-yang and the wuxing; Zou Yan is considered the founder of this school. His theory attempted to explain the universe in terms of basic forces in nature: the complementary agents of yin (dark, cold, female, negative) and yang (light, hot, male, positive) and the Five Elements or Five Phases (water, fire, wood, metal, and earth). 
+
+In its early days, this theory was most strongly associated with the states of Yan and Qi. In later periods, these epistemological theories came to hold significance in both philosophy and popular belief.  This school was absorbed into Taoism's alchemic and magical dimensions as well as into the Chinese medical framework. The earliest surviving recordings of this are in the Mawangdui texts and Huangdi Neijing.
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+Mohism 
+
+Mohism (Moism), founded by Mozi, promotes universal love with the aim of mutual benefit. Everyone must love each other equally and impartially to avoid conflict and war. Mozi was strongly against Confucian ritual, instead emphasizing pragmatic survival through farming, fortification, and statecraft. Tradition is inconsistent, and human beings need an extra-traditional guide to identify which traditions are acceptable. The moral guide must then promote and encourage social behaviors that maximize general benefit. As motivation for his theory, Mozi brought in the Will of Heaven, but rather than being religious his philosophy parallels utilitarianism.
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+Logicians 
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+The logicians (School of Names) were concerned with logic, paradoxes, names and actuality (similar to Confucian rectification of names). The logician Hui Shi was a friendly rival to Zhuangzi, arguing against Taoism in a light-hearted and humorous manner. Another logician, Gongsun Long, originated the famous When a White Horse is Not a Horse dialogue.
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+Agriculturalists 
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+Agriculturalism was an early agrarian social and political philosophy that advocated peasant utopian communalism and egalitarianism. The philosophy is founded on the notion that human society originates with the development of agriculture, and societies are based upon "people's natural propensity to farm."
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+The Agriculturalists believed that the ideal government, modeled after the semi-mythical governance of Shennong, is led by a benevolent king, one who works alongside the people in tilling the fields. The Agriculturalist king is not paid by the government through its treasuries; his livelihood is derived from the profits he earns working in the fields, not his leadership. Unlike the Confucians, the Agriculturalists did not believe in the division of labour, arguing instead that the economic policies of a country need to be based upon an egalitarian self sufficiency. The Agriculturalists supported the fixing of prices, in which all similar goods, regardless of differences in quality and demand, are set at exactly the same, unchanging price.
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+Early imperial era philosophy
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+History
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+Qin and Han dynasties 
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+The short founder Qin dynasty, where Legalism was the official philosophy, quashed Mohist and Confucianist schools. Legalism remained influential during the early Han dynasty under the Taoist-Realist ideology Huang-Lao until Emperor Wu of Han adopted Confucianism as official doctrine. Confucianism and Taoism became the determining forces of Chinese thought until the introduction of Buddhism.
+
+Confucianism was particularly strong during the Han dynasty, whose greatest thinker was Dong Zhongshu, who integrated Confucianism with the thoughts of the Zhongshu School and the theory of the Five Elements. He also was a promoter of the New Text school, which considered Confucius as a divine figure and a spiritual ruler of China, who foresaw and started the evolution of the world towards the Universal Peace.
+
+In contrast, there was an Old Text school that advocated the use of Confucian works written in ancient language (from this comes the denomination Old Text) that were so much more reliable. In particular, they refuted the assumption of Confucius as a godlike figure and considered him as the greatest sage, but simply a human and mortal
+
+Six Dynasties 
+The 3rd and 4th centuries saw the rise of the Xuanxue (mysterious learning), also called Neo-Taoism.
+
+Buddhism arrived in China around the 1st century AD, but it was not until the Northern and Southern, Sui and Tang dynasties that it gained considerable influence and acknowledgement. At the beginning, it was considered a sort of Taoist sect. Mahayana Buddhism was far more successful in China than its rival Hinayana, and both Indian schools and local Chinese sects arose from the 5th century. Two chiefly important monk philosophers were Sengzhao and Daosheng. But probably the most influential and original of these schools was the Chan sect, which had an even stronger impact in Japan as the Zen sect.
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+In the mid-Tang Buddhism reached its peak, and reportedly there were 4,600 monasteries, 40,000 hermitages and 260,500 monks and nuns. The power of the Buddhist clergy was so great and the wealth of the monasteries so impressive, that it instigated criticism from Confucian scholars, who considered Buddhism as a foreign religion. In 845 Emperor Wuzong ordered the Great Anti-Buddhist Persecution, confiscating the riches and returning monks and nuns to lay life. From then on, Buddhism lost much of its influence.
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+Schools of thought
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+Xuanxue
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+Xuanxue was a philosophical school that combined elements of Confucianism and Taoism to reinterpret the I Ching,Tao Te Ching, and Zhuangzi. The most important philosophers of this movement were Wang Bi, Xiang Xiu and Guo Xiang. The main question of this school was whether Being came before Not-Being (in Chinese, ming and wuming). A peculiar feature of these Taoist thinkers, like the Seven Sages of the Bamboo Grove, was the concept of feng liu (lit. wind and flow), a sort of romantic spirit which encouraged following the natural and instinctive impulse.
+
+Buddhism 
+
+Buddhism is a religion, a practical philosophy, and arguably a psychology, focusing on the teachings of Gautama Buddha, who lived on the Indian subcontinent most likely from the mid-6th to the early 5th century BCE. When used in a generic sense, a Buddha is generally considered to be someone who discovers the true nature of reality.
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+Buddhism until the 4th century AD had little impact on China but in the 4th century its teachings hybridized with those of Taoism. Buddhism brought to China the idea of many hells, where sinners went, but the deceased sinners souls could be saved by pious acts. Since Chinese traditional thought focused more on ethics rather than metaphysics, the merging of Buddhist and Taoist concepts developed several schools distinct from the originating Indian schools.
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+The most prominent examples with philosophical merit are Sanlun, Tiantai, Huayan, and Chan (a.k.a. Zen). They investigate consciousness, levels of truth, whether reality is ultimately empty, and how enlightenment is to be achieved. Buddhism has a spiritual aspect that complements the action of Neo-Confucianism, with prominent Neo-Confucians advocating certain forms of meditation.
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+Mid to late imperial era philosophy
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+History 
+Neo-Confucianism was a revived version of old Confucian principles that appeared around the Song dynasty, with Buddhist, Taoist, and Legalist features. The first philosophers, such as Shao Yong, Zhou Dunyi and Chang Zai, were cosmologists and worked on the I Ching. The Cheng brothers, Cheng Yi and Cheng Hao, are considered the founders of the two main schools of thought of Neo-Confucianism: the School of Principle the first, the School of Mind the latter.
+
+The School of Principle gained supremacy during the Song dynasty with the philosophical system elaborated by Zhu Xi, which became mainstream and officially adopted by the government for the imperial examinations under the Yuan dynasty. The School of Mind was developed by Lu Jiuyuan, Zhu Xi's main rival, but was soon forgotten. Only during the Ming dynasty was the School of Mind revived by Wang Shouren, whose influence is equal to that of Zhu Xi. This school was particularly important in Japan.
+
+During the Qing dynasty many philosophers objected against Neo-Confucianism and there was a return to the Han dynasty Confucianism, and also the reprise of the controversy between Old Text and New Text. In this period also started the penetration of Western culture, but most Chinese thought that the Westerners were maybe more advanced in technology and warfare, but that China had primacy in moral and intellectual fields.
+
+Chinese culture was highly influential on the traditions of other East Asian states, and its philosophy directly influenced Korean philosophy, Vietnamese philosophy and Japanese philosophy. During later Chinese dynasties like the Ming Dynasty (1368–1644), as well as in the Korean Joseon dynasty (1392–1897), a resurgent Neo-Confucianism led by thinkers such as Wang Yangming (1472–1529) became the dominant school of thought and was promoted by the imperial state. In Japan, the Tokugawa shogunate (1603–1867) was also strongly influenced by Confucian philosophy.
+
+Schools of thought
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+Neo-Confucianism 
+
+Despite Confucianism losing popularity to Taoism and Buddhism, Neo-Confucianism combined those ideas into a more metaphysical framework. Its concepts include li (principle, akin to Plato's forms), qi (vital or material force), taiji (the Great Ultimate), and xin (mind). Song dynasty philosopher Zhou Dunyi (1017–1073) is commonly seen as the first true "pioneer" of Neo-Confucianism, using Daoist metaphysics as a framework for his ethical philosophy.
+
+Neo-Confucianism developed both as a renaissance of traditional Confucian ideas, and as a reaction to the ideas of Buddhism and religious Daoism. Although the Neo-Confucianists denounced Buddhist metaphysics, Neo-Confucianism did borrow Daoist and Buddhist terminology and concepts.
+Neo-Confucianist philosophers like Zhu Xi and Wang Yangming are seen as the most important figures of Neo-Confucianism.
+
+Modern era 
+
+During the Industrial and Modern Ages, Chinese philosophy had also begun to integrate concepts of Western philosophy, as steps toward modernization.  Chinese philosophy never developed the concept of human rights, so that classical Chinese lacked words for them. In 1864, W.A.P. Martin had to invent the word quanli () to translate the Western concept of "rights" in the process of translating Henry Wheaton's Elements of International Law into classical Chinese.
+
+By the time of the Xinhai Revolution in 1911, there were many calls such as the May Fourth Movement to completely abolish the old imperial institutions and practices of China.  There have been attempts to incorporate democracy, republicanism, and industrialism into Chinese philosophy, notably by Sun Yat-Sen at the beginning of the 20th century. Mao Zedong added Marxism, Stalinism, Chinese Marxist Philosophy and other communist thought.
+
+When the Chinese Communist Party took over the reign, previous schools of thought, excepting notably Legalism, were denounced as backward, and later even purged during the Cultural Revolution, whereas their influences on Chinese thoughts remain until today. The current government of the People's Republic of China is trying to encourage a form of market socialism.
+
+Since the radical movement of the Cultural Revolution, the Chinese government has become much more tolerant with the practice of traditional beliefs. The 1978 Constitution of the People's Republic of China guarantees "freedom of religion" with a number of restrictions. Spiritual and philosophical institutions have been allowed to be established or re-established, as long they are not perceived to be a threat to the power of the CPC. Moreover, those organizations are heavily monitored. The influences of the past are still deeply ingrained in the Chinese culture.
+
+New Confucianism 
+
+New Confucianism is an intellectual movement of Confucianism that began in the early 20th century in Republican China, and revived in post-Mao era contemporary communist China. It is deeply influenced by, but not identical with, the Neo-Confucianism of the Song and Ming dynasties.
+
+Philosophers 
+
+ Confucius, seen as the Great Master but sometimes ridiculed by Taoists.
+ Mencius, Confucius' follower having idealist inspiration
+ Xun Zi, another Confucius' follower, closer to realism, teacher of Han Fei and Li Si
+ Zhu Xi, founder of Neo-Confucianism
+ Wang Yangming, most influential proponent of "state of mind." ()
+ Laozi, the semi-mythical founder of Taoist school.
+ Zhuang Zhou, said to be the author of the Zhuangzi.
+ Lie Yukou, said to be the author of the Liezi.
+ Mozi, the founder of Mohist school.
+ Shang Yang, Legalist founder and pivotal Qin reformer
+ Han Fei, one of the most notable theoreticians of Legalism
+ Li Si, major proponent and practitioner of Legalism
+
+Concepts 
+
+Although the individual philosophical schools differ considerably, they nevertheless share a common vocabulary and set of concerns.
+
+Among the terms commonly found in Chinese philosophy are:
+  Dao (the Way, or one's doctrine)
+  De (virtue, power)
+  Li (principle, Law)
+  Qi (vital energy or material force)
+ The Tai-chi (Great Heavenly Axis) forms a unity of the two complementary polarities, Yin and Yang. The word Yin originally referred to a hillside facing away from the sun. Philosophically, it stands the dark, passive, feminine principle; whereas Yang (the hillside facing the sun) stands for the bright, active, masculine principle. Yin and Yang are not antagonistic, they alternate in inverse proportion to one another—like the rise and fall of a wave and are known by their comparison.
+
+Among the commonalities of Chinese philosophies are:
+ The tendency not to view man as separate from nature.
+ Questions about the nature and existence of a monotheistic deity, which have profoundly influenced Western philosophy, have not been important in Chinese philosophies or a source of great conflict in Chinese traditional religion.
+ The belief that the purpose of philosophy is primarily to serve as an ethical and practical guide.
+ The political focus: most scholars of the Hundred Schools were trying to convince the ruler to behave in the way they defended.
+
+See also
+
+References
+
+Further reading 
+ Bo Mou (Editor), History of Chinese Philosophy, Routledge, 2009.
+ 
+ Antonio S. Cua (Editor),  Encyclopedia of Chinese Philosophy, Routledge, 2003.
+ Feng Youlan, A History of Chinese Philosophy (Princeton Paperbacks), tr. Derk Bodde, 1983.
+ Herrlee Glessner Creel,  Chinese Thought, from Confucius to Mao Zedong, 1971.
+  A. C. Graham, Disputers of the Tao; Philosophical Argument in Ancient China, 1989.
+ Christoph Harbsmeier, Logic and Language in Ancient China, (Joseph Needham, Science and Civilisation in China, Volume 7, Part I, Cambridge University Press, 1998.
+ Philip J. Ivanhoe and Bryan W. Van Norden (Editors), Readings in Classical Chinese Philosophy, 2nd edition, Indianapolis:  Hackett Publishing, 2005.
+ Karyn Lai, Introduction to Chinese Philosophy, Cambridge University Press, 2008.
+ Lin Yutang, The Importance of Living, William Morrow Paperbacks, 1998.
+ Jana S. Rošker, Searching for the Way: Theory of Knowledge in Pre-modern and Modern Chinese Philosophy Hong Kong Chinese University Press, 2008.
+ Roel Sterckx, Chinese Thought. From Confucius to Cook Ding. London: Penguin, 2019.
+ Roel Sterckx, Ways of Heaven. An Introduction to Chinese Thought. New York: Basic Books, 2019.
+ Justin Tiwald and Bryan W. Van Norden (Editors), Readings in Later Chinese Philosophy: Han Dynasty to the 20th Century, Indianapolis: Hackett Publishing, 2014.
+ Bryan W. Van Norden,  Introduction to Classical Chinese Philosophy, Indianapolis:  Hackett Publishing, 2011.
+ Arthur Waley, Three Ways of Thought in Ancient China, 1983.
+
+External links 
+
+ 
+ Article "The Chinese Concept of Space"
+ Article "The Chinese Concept of Time"
+ The Hundred Schools of Thought
+ Chinese Text Project – Chinese philosophy texts in classical Chinese with English and modern Chinese translations
+ 
+ Contesting Confucius Henry Zhao, New Left Review 44, March–April 2007
+ Encyclopédie ou Dictionnaire raisonné des sciences, des arts et des métiers, 1751–1772, ""Philosophie des Chinois" [in French]
+ Warp Weft and Way – A Group Blog of Chinese and Comparative Philosophy
+
+ 
+Chinese literature
+Cultural history of China
+Kong Fuzi (), more usually Kongzi (; ,  – ), commonly Latinized as Confucius, was a Chinese philosopher of the Spring and Autumn period who is traditionally considered the paragon of Chinese sages. Confucius's teachings and philosophy underpin East Asian culture and society, and remain influential across China and East Asia to this day. His philosophical teachings, called Confucianism, emphasized personal and governmental morality, correctness of social relationships, justice, kindness, and sincerity, as well as an emphasis on a ruler's duty to their subjects.
+
+Confucius considered himself a transmitter for the values of earlier periods which he claimed had been abandoned in his time. The time immediately following Confucius's life saw a rich diversity of thought, and was a formative period in China's intellectual history. His ideas gained in prominence during the Warring States period, but experienced setback immediately following the Qin conquest. Under Emperor Wu of Han, Confucius's ideas received official sanction, with affiliated works becoming required reading for one of the career paths to officialdom. During the Tang and Song dynasties, Confucianism developed into a system known in the West as Neo-Confucianism, and later as New Confucianism. Confucianism became part of the Chinese social fabric and way of life. 
+
+Confucius is traditionally credited with having authored or edited many of the Chinese classic texts, including all of the Five Classics, but modern scholars are cautious of attributing specific assertions to Confucius himself. At least some of the texts and philosophy he taught were already ancient. Aphorisms concerning his teachings were compiled in the Analects, but only many years after his death.
+
+Confucius's principles have commonality with Chinese tradition and belief. With filial piety, he championed strong family loyalty, ancestor veneration, and respect of elders by their children and of husbands by their wives, recommending family as a basis for ideal government. He espoused the Silver Rule, "Do not do unto others what you do not want done to yourself."
+
+Name
+
+The name "Confucius" is a Latinized form of the Mandarin Chinese  (, "Master Kong"), and was coined in the late 16th century by the early Jesuit missionaries to China. Confucius's clan name was Kong () and his given name was Qiu (). His "courtesy name", a capping (guan: ) given at his coming of age ceremony, and by which he would have been known to all but his older family members, was Zhongni (), the "Zhòng" indicating that he was the second son in his family.
+
+Life
+
+Early life
+It is thought that Confucius was born on September 28, 551 BCE, in Zou (, in modern Shandong province). The area was notionally controlled by the kings of Zhou but effectively independent under the local lords of Lu, who ruled from the nearby city of Qufu. His father Kong He (or Shuliang He) was an elderly commandant of the local Lu garrison. His ancestry traced back through the dukes of Song to the Shang dynasty which had preceded the Zhou. Traditional accounts of Confucius's life relate that Kong He's grandfather had migrated the family from Song to Lu. Not all modern scholars accept Confucius's descent from Song nobility.
+
+Kong He died when Confucius was three years old, and Confucius was raised by his mother Yan Zhengzai () in poverty. His mother later died at less than 40 years of age. At age 19, he married Lady Qiguan (), and a year later the couple had their first child, their son Kong Li (). Qiguan and Confucius later had two daughters together, one of whom is thought to have died as a child and one was named Kong Jiao ().
+
+Confucius was educated at schools for commoners, where he studied and learned the Six Arts.
+
+Confucius was born into the class of shi (), between the aristocracy and the common people. He is said to have worked in various government jobs during his early 20s, and as a bookkeeper and a caretaker of sheep and horses, using the proceeds to give his mother a proper burial. When his mother died, Confucius (aged 23) is said to have mourned for three years, as was the tradition.
+
+Political career
+In Confucius's time, the state of Lu was headed by a ruling ducal house. Under the duke were three aristocratic families, whose heads bore the title of viscount and held hereditary positions in the Lu bureaucracy. The Ji family held the position "Minister over the Masses", who was also the "Prime Minister"; the Meng family held the position "Minister of Works"; and the Shu family held the position "Minister of War". In the winter of , Yang Hu—a retainer of the Ji family—rose up in rebellion and seized power from the Ji family. However, by the summer of , the three hereditary families had succeeded in expelling Yang Hu from Lu. By then, Confucius had built up a considerable reputation through his teachings, while the families came to see the value of proper conduct and righteousness, so they could achieve loyalty to a legitimate government. Thus, that year (), Confucius came to be appointed to the minor position of governor of a town. Eventually, he rose to the position of Minister of Crime.
+
+Confucius desired to return the authority of the state to the duke by dismantling the fortifications of the city—strongholds belonging to the three families. This way, he could establish a centralized government. However, Confucius relied solely on diplomacy as he had no military authority himself. In , Hou Fan—the governor of Hou—revolted against his lord of the Shu family. Although the Meng and Shu families unsuccessfully besieged Hou, a loyalist official rose up with the people of Hou and forced Hou Fan to flee to the Qi state. The situation may have been in favor for Confucius as this likely made it possible for Confucius and his disciples to convince the aristocratic families to dismantle the fortifications of their cities. Eventually, after a year and a half, Confucius and his disciples succeeded in convincing the Shu family to raze the walls of Hou, the Ji family in razing the walls of Bi, and the Meng family in razing the walls of Cheng. First, the Shu family led an army towards their city Hou and tore down its walls in .
+
+Soon thereafter, Gongshan Furao (also known as Gongshan Buniu), a retainer of the Ji family, revolted and took control of the forces at Bi. He immediately launched an attack and entered the capital Lu. Earlier, Gongshan had approached Confucius to join him, which Confucius considered as he wanted the opportunity to put his principles into practice but he gave up on the idea in the end. Confucius disapproved the use of a violent revolution by principle, even though the Ji family dominated the Lu state by force for generations and had exiled the previous duke. Creel (1949) states that, unlike the rebel Yang Hu before him, Gongshan may have sought to destroy the three hereditary families and restore the power of the duke. However, Dubs (1946) is of the view that Gongshan was encouraged by Viscount Ji Huan to invade the Lu capital in an attempt to avoid dismantling the Bi fortified walls. Whatever the situation may have been, Gongshan was considered an upright man who continued to defend the state of Lu, even after he was forced to flee.
+
+During the revolt by Gongshan, Zhong You had managed to keep the duke and the three viscounts together at the court. Zhong You was one of the disciples of Confucius and Confucius had arranged for him to be given the position of governor by the Ji family. When Confucius heard of the raid, he requested that Viscount Ji Huan allow the duke and his court to retreat to a stronghold on his palace grounds. Thereafter, the heads of the three families and the duke retreated to the Ji's palace complex and ascended the Wuzi Terrace. Confucius ordered two officers to lead an assault against the rebels. At least one of the two officers was a retainer of the Ji family, but they were unable to refuse the orders while in the presence of the duke, viscounts, and court. The rebels were pursued and defeated at Gu. Immediately after the revolt was defeated, the Ji family razed the Bi city walls to the ground.
+
+The attackers retreated after realizing that they would have to become rebels against the state and their lord. Through Confucius' actions, the Bi officials had inadvertently revolted against their own lord, thus forcing Viscount Ji Huan's hand in having to dismantle the walls of Bi (as it could have harbored such rebels) or confess to instigating the event by going against proper conduct and righteousness as an official. Dubs (1949) suggests that the incident brought to light Confucius' foresight, practical political ability, and insight into human character.
+
+When it was time to dismantle the city walls of the Meng family, the governor was reluctant to have his city walls torn down and convinced the head of the Meng family not to do so. The Zuozhuan recalls that the governor advised against razing the walls to the ground as he said that it made Cheng vulnerable to the Qi state and cause the destruction of the Meng family. Even though Viscount Meng Yi gave his word not to interfere with an attempt, he went back on his earlier promise to dismantle the walls.
+
+Later in , Duke Ding personally went with an army to lay siege to Cheng in an attempt to raze its walls to the ground, but he did not succeed. Thus, Confucius could not achieve the idealistic reforms that he wanted including restoration of the legitimate rule of the duke. He had made powerful enemies within the state, especially with Viscount Ji Huan, due to his successes so far. According to accounts in the Zuozhuan and Shiji, Confucius departed his homeland in  after his support for the failed attempt of dismantling the fortified city walls of the powerful Ji, Meng, and Shu families. He left the state of Lu without resigning, remaining in self-exile and unable to return as long as Viscount Ji Huan was alive.
+
+Exile
+
+The Shiji stated that the neighboring Qi state was worried that Lu was becoming too powerful while Confucius was involved in the government of the Lu state. According to this account, Qi decided to sabotage Lu's reforms by sending 100 good horses and 80 beautiful dancing girls to the duke of Lu. The duke indulged himself in pleasure and did not attend to official duties for three days. Confucius was disappointed and resolved to leave Lu and seek better opportunities, yet to leave at once would expose the misbehavior of the duke and therefore bring public humiliation to the ruler Confucius was serving. Confucius therefore waited for the duke to make a lesser mistake. Soon after, the duke neglected to send to Confucius a portion of the sacrificial meat that was his due according to custom, and Confucius seized upon this pretext to leave both his post and the Lu state.
+
+After Confucius's resignation, he travelled around the principality states of north-east and central China including Wey, Song, Zheng, Cao, Chu, Qi, Chen, and Cai (and a failed attempt to go to Jin). At the courts of these states, he expounded his political beliefs but did not see them implemented.
+
+Return home
+
+According to the Zuozhuan, Confucius returned home to his native Lu when he was 68, after he was invited to do so by Ji Kangzi, the chief minister of Lu. The Analects depict him spending his last years teaching 72 or 77 disciples and transmitting the old wisdom via a set of texts called the Five Classics.
+
+During his return, Confucius sometimes acted as an advisor to several government officials in Lu, including Ji Kangzi, on matters including governance and crime.
+
+Burdened by the loss of both his son and his favorite disciples, he died at the age of 71 or 72 from natural causes. Confucius was buried in Kong Lin cemetery which lies in the historical part of Qufu in the Shandong Province. The original tomb erected there in memory of Confucius on the bank of the Sishui River had the shape of an axe. In addition, it has a raised brick platform at the front of the memorial for offerings such as sandalwood incense and fruit.
+
+Philosophy
+
+In the Analects, Confucius presents himself as a "transmitter who invented nothing". He puts the greatest emphasis on the importance of study, and it is the Chinese character for study () that opens the text. Far from trying to build a systematic or formalist theory, he wanted his disciples to master and internalize older classics, so that their deep thought and thorough study would allow them to relate the moral problems of the present to past political events (as recorded in the Annals) or the past expressions of commoners' feelings and noblemen's reflections (as in the poems of the Book of Odes). 
+
+Although some Chinese people follow Confucianism in a religious manner, many argue that its values are secular and that it is less a religion than a secular morality. Proponents of religious Confucianism argue that despite the secular nature of Confucianism's teachings, it is based on a worldview that is religious. Confucianism discusses elements of the afterlife and views concerning Heaven, but it is relatively unconcerned with some spiritual matters often considered essential to religious thought, such as the nature of souls.
+
+Ethics
+
+One of the deepest teachings of Confucius may have been the superiority of personal exemplification over explicit rules of behavior. His moral teachings emphasized self-cultivation, emulation of moral exemplars, and the attainment of skilled judgment rather than knowledge of rules. Confucian ethics may, therefore, be considered a type of virtue ethics. His teachings rarely rely on reasoned argument, and ethical ideals and methods are conveyed indirectly, through allusion, innuendo, and even tautology. His teachings require examination and context to be understood. A good example is found in this famous anecdote:
+
+By not asking about the horses, Confucius demonstrates that the sage values human beings over property (which animals seem to represent in this example); readers are led to reflect on whether their response would follow Confucius's and to pursue self-improvement if it would not have. 
+
+One of his teachings was a variant of the Golden Rule, sometimes called the "Silver Rule" owing to its negative form:
+
+Often overlooked in Confucian ethics are the virtues to the self: sincerity and the cultivation of knowledge. Virtuous action towards others begins with virtuous and sincere thought, which begins with knowledge. A virtuous disposition without knowledge is susceptible to corruption, and virtuous action without sincerity is not true righteousness. Cultivating knowledge and sincerity is also important for one's own sake; the superior person loves learning for the sake of learning and righteousness for the sake of righteousness.
+
+The Confucian theory of ethics as exemplified in lǐ () is based on three important conceptual aspects of life: (a) ceremonies associated with sacrifice to ancestors and deities of various types, (b) social and political institutions, and (c) the etiquette of daily behavior. Some believed that lǐ originated from the heavens, but Confucius stressed the development of lǐ through the actions of sage leaders in human history. His discussions of lǐ seem to redefine the term to refer to all actions committed by a person to build the ideal society, rather than those conforming with canonical standards of ceremony.
+
+In the early Confucian tradition, lǐ was doing the proper thing at the proper time; balancing between maintaining existing norms to perpetuate an ethical social fabric, and violating them in order to accomplish ethical good. Training in the lǐ of past sages, cultivates virtues in people that include ethical judgment about when lǐ must be adapted in light of situational contexts.
+
+In Confucianism, the concept of li is closely related to yì (), which is based upon the idea of reciprocity. Yì can be translated as righteousness, though it may mean what is ethically best to do in a certain context. The term contrasts with action done out of self-interest. While pursuing one's own self-interest is not necessarily bad, one would be a better, more righteous person if one's life was based upon following a path designed to enhance the greater good. Thus an outcome of yì is doing the right thing for the right reason.
+
+Just as action according to lǐ should be adapted to conform to the aspiration of adhering to yì, so yì is linked to the core value of rén (). Rén consists of five basic virtues: seriousness, generosity, sincerity, diligence, and kindness. Rén is the virtue of perfectly fulfilling one's responsibilities toward others, most often translated as "benevolence", "humaneness", or "empathy"; translator Arthur Waley calls it "Goodness" (with a capital G), and other translations that have been put forth include "authoritativeness" and "selflessness". Confucius's moral system was based upon empathy and understanding others, rather than divinely ordained rules. To develop one's spontaneous responses of rén so that these could guide action intuitively was even better than living by the rules of yì. Confucius asserts that virtue is a mean between extremes. For example, the properly generous person gives the right amount – not too much and not too little.
+
+Politics
+Confucius's political thought is based upon his ethical thought. He argued that the best government is one that rules through "rites" (lǐ) and people's natural morality, and not by using bribery and coercion. He explained that this is one of the most important analects: "If the people be led by laws, and uniformity sought to be given them by punishments, they will try to avoid the punishment, but have no sense of shame. If they be led by virtue, and uniformity sought to be given them by the rules of propriety, they will have the sense of the shame, and moreover will become good." (Analects 2.3, tr. Legge). This "sense of shame" is an internalisation of duty, where the punishment precedes the evil action, instead of following it in the form of laws as in Legalism.
+
+Confucius looked nostalgically upon earlier days, and urged the Chinese, particularly those with political power, to model themselves on earlier examples. In times of division, chaos, and endless wars between feudal states, he wanted to restore the Mandate of Heaven () that could unify the "world" (, "all under Heaven") and bestow peace and prosperity on the people. Because his vision of personal and social perfections was framed as a revival of the ordered society of earlier times, Confucius is often considered a great proponent of conservatism, but a closer look at what he proposes often shows that he used (and perhaps twisted) past institutions and rites to push a new political agenda of his own: a revival of a unified royal state, whose rulers would succeed to power on the basis of their moral merits instead of lineage. These would be rulers devoted to their people, striving for personal and social perfection, and such a ruler would spread his own virtues to the people instead of imposing proper behavior with laws and rules.
+
+While Confucius supported the idea of government ruling by a virtuous king, his ideas contained a number of elements to limit the power of rulers. He argued for representing truth in language, and honesty was of paramount importance. Even in facial expression, truth must always be represented. Confucius believed that if a ruler is to lead correctly, by action, that orders would be unnecessary in that others will follow the proper actions of their ruler. In discussing the relationship between a king and his subject (or a father and his son), he underlined the need to give due respect to superiors. This demanded that the subordinates must advise their superiors if the superiors are considered to be taking a course of action that is wrong. Confucius believed in ruling by example, if you lead correctly, orders by force or punishment are not necessary.
+
+Music and poetry
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+Confucius heavily promoted the use of music with rituals or the rites order. The scholar Li Zehou argued that Confucianism is based on the idea of rites. Rites serve as the starting point for each individual and that these sacred social functions allow each person's human nature to be harmonious with reality. Given this, Confucius believed that "music is the harmonization of heaven and earth; the rites is the order of heaven and earth". Thus the application of music in rites creates the order that makes it possible for society to prosper. poetry,
+
+The Confucian approach to music was heavily inspired by the Shijing and the Classic of Music, which was said to be the sixth Confucian classic until it was lost during the Han Dynasty. The Shijing serves as one of the current Confucian classics and is a book on poetry that contains a diversified variety of poems as well as folk songs. Confucius is traditionally ascribed with compiling these classics within his school. In the Analects, Confucius described the importance of the art in the development of society:
+
+Legacy
+
+Confucius's teachings were later turned into an elaborate set of rules and practices by his numerous disciples and followers, who organized his teachings into the Analects. Confucius's disciples and his only grandson, Zisi, continued his philosophical school after his death. These efforts spread Confucian ideals to students who then became officials in many of the royal courts in China, thereby giving Confucianism the first wide-scale test of its dogma.
+
+Two of Confucius's most famous later followers emphasized radically different aspects of his teachings. In the centuries after his death, Mencius () and Xunzi () both composed important teachings elaborating in different ways on the fundamental ideas associated with Confucius. Mencius () articulated the innate goodness in human beings as a source of the ethical intuitions that guide people towards rén, yì, and lǐ, while Xunzi () underscored the realistic and materialistic aspects of Confucian thought, stressing that morality was inculcated in society through tradition and in individuals through training. In time, their writings, together with the Analects and other core texts came to constitute the philosophical corpus of Confucianism.
+
+This realignment in Confucian thought was parallel to the development of Legalism, which saw filial piety as self-interest and not a useful tool for a ruler to create an effective state. A disagreement between these two political philosophies came to a head in  when the Qin state conquered all of China. Li Si, Prime Minister of the Qin dynasty, convinced Qin Shi Huang to abandon the Confucians' recommendation of awarding fiefs akin to the Zhou Dynasty before them which he saw as being against to the Legalist idea of centralizing the state around the ruler. When the Confucian advisers pressed their point, Li Si had many Confucian scholars killed and their books burned—considered a huge blow to the philosophy and Chinese scholarship.
+
+Under the succeeding Han and Tang dynasties, Confucian ideas gained even more widespread prominence. Under Wudi, the works attributed to Confucius were made the official imperial philosophy and required reading for civil service examinations in  which was continued nearly unbroken until the end of the 19th century. As Mohism lost support by the time of the Han, the main philosophical contenders were Legalism, which Confucian thought somewhat absorbed, the teachings of Laozi, whose focus on more spiritual ideas kept it from direct conflict with Confucianism, and the new Buddhist religion, which gained acceptance during the Southern and Northern Dynasties era. Both Confucian ideas and Confucian-trained officials were relied upon in the Ming Dynasty and even the Yuan Dynasty, although Kublai Khan distrusted handing over provincial control to them.
+
+During the Song dynasty, the scholar Zhu Xi () added ideas from Daoism and Buddhism into Confucianism. In his life, Zhu Xi was largely ignored, but not long after his death, his ideas became the new orthodox view of what Confucian texts actually meant. Modern historians view Zhu Xi as having created something rather different and call his way of thinking Neo-Confucianism. Neo-Confucianism held sway in China, Japan, Korea, and Vietnam until the 19th century.
+
+The works of Confucius were first translated into European languages by Jesuit missionaries in the 16th century during the late Ming dynasty. The first known effort was by Michele Ruggieri, who returned to Italy in 1588 and carried on his translations while residing in Salerno. Matteo Ricci started to report on the thoughts of Confucius, and a team of Jesuits—Prospero Intorcetta, Philippe Couplet, and two others—published a translation of several Confucian works and an overview of Chinese history in Paris in 1687. François Noël, after failing to persuade ClementXI that Chinese veneration of ancestors and Confucius did not constitute idolatry, completed the Confucian canon at Prague in 1711, with more scholarly treatments of the other works and the first translation of the collected works of Mencius. It is thought that such works had considerable importance on European thinkers of the period, particularly among the Deists and other philosophical groups of the Enlightenment who were interested by the integration of the system of morality of Confucius into Western civilization.
+
+In the modern era Confucian movements, such as New Confucianism, still exist, but during the Cultural Revolution, Confucianism was frequently attacked by leading figures in the Chinese Communist Party. This was partially a continuation of the condemnations of Confucianism by intellectuals and activists in the early 20th century as a cause of the ethnocentric close-mindedness and refusal of the Qing Dynasty to modernize that led to the tragedies that befell China in the 19th century.
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+Confucius's works are studied by scholars in many other Asian countries, particularly those in the Chinese cultural sphere, such as Korea, Japan, and Vietnam. Many of those countries still hold the traditional memorial ceremony every year.
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+Among Tibetans, Confucius is often worshipped as a holy king and master of magic, divination and astrology. Tibetan Buddhists see him as learning divination from the Buddha Manjushri (and that knowledge subsequently reaching Tibet through Princess Wencheng), while Bon practitioners see him as being a reincarnation of Tonpa Shenrab Miwoche, the legendary founder of Bon.
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+The Ahmadiyya Muslim Community believes Confucius was a Divine Prophet of God, as were Lao-Tzu and other eminent Chinese personages.
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+According to the Siddhar tradition of Tamil Nadu, Confucius is one of the 18 esteemed Siddhars of yore, and is better known as Kalangi Nathar or Kamalamuni. The Thyagaraja Temple in Thiruvarur, Tamil Nadu is home to his Jeeva Samadhi.
+
+In modern times, Asteroid 7853, "Confucius", was named after the Chinese thinker.
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+Disciples
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+Confucius began teaching after he turned 30, and taught more than 3,000 students in his life, about 70 of whom were considered outstanding. His disciples and the early Confucian community they formed became the most influential intellectual force in the Warring States period. The Han dynasty historian Sima Qian dedicated a chapter in his Records of the Grand Historian to the biographies of Confucius's disciples, accounting for the influence they exerted in their time and afterward. Sima Qian recorded the names of 77 disciples in his collective biography, while Kongzi Jiayu, another early source, records 76, not completely overlapping. The two sources together yield the names of 96 disciples. Twenty-two of them are mentioned in the Analects, while the Mencius records 24.
+
+Confucius did not charge any tuition, and only requested a symbolic gift of a bundle of dried meat from any prospective student. According to his disciple Zigong, his master treated students like doctors treated patients and did not turn anybody away. Most of them came from Lu, Confucius's home state, with 43 recorded, but he accepted students from all over China, with six from the state of Wey (such as Zigong), three from Qin, two each from Chen and Qi, and one each from Cai, Chu, and Song. Confucius considered his students' personal background irrelevant, and accepted noblemen, commoners, and even former criminals such as Yan Zhuoju and Gongye Chang. His disciples from richer families would pay a sum commensurate with their wealth which was considered a ritual donation.
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+Confucius's favorite disciple was Yan Hui, most probably one of the most impoverished of them all. Sima Niu, in contrast to Yan Hui, was from a hereditary noble family hailing from the Song state. Under Confucius's teachings, the disciples became well learned in the principles and methods of government. He often engaged in discussion and debate with his students and gave high importance to their studies in history, poetry, and ritual. Confucius advocated loyalty to principle rather than to individual acumen, in which reform was to be achieved by persuasion rather than violence. Even though Confucius denounced them for their practices, the aristocracy was likely attracted to the idea of having trustworthy officials who were studied in morals as the circumstances of the time made it desirable. In fact, the disciple Zilu even died defending his ruler in Wey.
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+Yang Hu, who was a subordinate of the Ji family, had dominated the Lu government from 505 to 502 and even attempted a coup, which narrowly failed. As a likely consequence, it was after this that the first disciples of Confucius were appointed to government positions. A few of Confucius's disciples went on to attain official positions of some importance, some of which were arranged by Confucius. By the time Confucius was 50 years old, the Ji family had consolidated their power in the Lu state over the ruling ducal house. Even though the Ji family had practices with which Confucius disagreed and disapproved, they nonetheless gave Confucius's disciples many opportunities for employment. Confucius continued to remind his disciples to stay true to their principles and renounced those who did not, all the while being openly critical of the Ji family.
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+In the West
+The influence of Confucius has been observed on multiple Western thinkers, including Niels Bohr, Benjamin Franklin, Allen Ginsberg, Thomas Jefferson, Gottfried Wilhelm Leibniz, Robert Cummings Neville, Alexander Pope, Ezra Pound, François Quesnay, Friedrich Schiller, Voltaire, and Christian Wolff.
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+Visual portraits
+ 
+No contemporary painting or sculpture of Confucius survives, and it was only during the Han Dynasty that he was portrayed visually. Carvings often depict his legendary meeting with Laozi. Since that time there have been many portraits of Confucius as the ideal philosopher. An early verbal portrayal of Confucius is found in the chapter "External Things" () of the book Zhuangzi (), finished in about 3rd BCE, long after Confucius's death. The oldest known portrait of Confucius has been unearthed in the tomb of the Han dynasty ruler Marquis of Haihun (died ). The picture was painted on the wooden frame to a polished bronze mirror.
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+In former times, it was customary to have a portrait in Confucius Temples; however, during the reign of Hongwu Emperor (Taizu) of the Ming dynasty, it was decided that the only proper portrait of Confucius should be in the temple in his home town, Qufu in Shandong. In other temples, Confucius is represented by a memorial tablet. In 2006, the China Confucius Foundation commissioned a standard portrait of Confucius based on the Tang dynasty portrait by Wu Daozi.
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+The South Wall Frieze in the courtroom of the Supreme Court of the United States depicts Confucius as a teacher of harmony, learning, and virtue.
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+Fictional portrayals
+There have been two film adaptations of Confucius' life: the 1940 film Confucius starring Tang Huaiqiu, and the 2010 film Confucius starring Chow Yun-fat.
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+Memorials
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+Soon after Confucius's death, Qufu, his home town, became a place of devotion and remembrance. The Han dynasty Records of the Grand Historian records that it had already become a place of pilgrimage for ministers. It is still a major destination for cultural tourism, and many people visit his grave and the surrounding temples. In Sinic cultures, there are many temples where representations of the Buddha, Laozi, and Confucius are found together. There are also many temples dedicated to him, which have been used for Confucian ceremonies.
+
+Followers of Confucianism have a tradition of holding spectacular memorial ceremonies of Confucius () every year, using ceremonies that supposedly derived from Zhou Li () as recorded by Confucius, on the date of Confucius's birth. In the 20th century, this tradition was interrupted for several decades in mainland China, where the official stance of the Communist Party and the State was that Confucius and Confucianism represented reactionary feudalist beliefs which held that the subservience of the people to the aristocracy is a part of the natural order. All such ceremonies and rites were therefore banned. Only after the 1990s did the ceremony resume. As it is now considered a veneration of Chinese history and tradition, even Communist Party members may be found in attendance.
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+In Taiwan, where the Nationalist Party (Kuomintang) strongly promoted Confucian beliefs in ethics and behavior, the tradition of the memorial ceremony of Confucius () is supported by the government and has continued without interruption. While not a national holiday, it does appear on all printed calendars, much as Father's Day or Christmas Day do in the Western world.
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+In South Korea, a grand-scale memorial ceremony called Seokjeon Daeje is held twice a year on Confucius's birthday and the anniversary of his death, at Confucian academies across the country and Sungkyunkwan in Seoul.
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+Descendants
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+Confucius's descendants were repeatedly identified and honored by successive imperial governments with titles of nobility and official posts. They were honored with the rank of a marquis 35 times since Gaozu of the Han dynasty, and they were promoted to the rank of duke 42 times from the Tang dynasty to the Qing dynasty. Emperor Xuanzong of Tang first bestowed the title of "Duke Wenxuan" on Kong Suizhi of the 35th generation. In 1055, Emperor Renzong of Song first bestowed the title of "Duke Yansheng" on Kong Zongyuan of the 46th generation.
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+During the Southern Song dynasty, the Duke Yansheng Kong Duanyou fled south with the Song Emperor to Quzhou in Zhejiang, while the newly established Jin dynasty (1115–1234) in the north appointed Kong Duanyou's brother Kong Duancao who remained in Qufu as Duke Yansheng. From that time up until the Yuan dynasty, there were two Duke Yanshengs, one in the north in Qufu and the other in the south at Quzhou. An invitation to come back to Qufu was extended to the southern Duke Yansheng Kong Zhu by the Yuan-dynasty Emperor Kublai Khan. The title was taken away from the southern branch after Kong Zhu rejected the invitation, so the northern branch of the family kept the title of Duke Yansheng. The southern branch remained in Quzhou where they live to this day. Confucius's descendants in Quzhou alone number 30,000. The Hanlin Academy rank of Wujing boshi 五經博士 was awarded to the southern branch at Quzhou by a Ming Emperor while the northern branch at Qufu held the title Duke Yansheng. The leader of the southern branch was 孔祥楷 Kong Xiangkai.
+
+In 1351, during the reign of Emperor Toghon Temür of the Yuan dynasty, 54th-generation Kong Shao () moved from China to Korea during the Goryeo Dynasty, and was received courteously by Princess Noguk (the Mongolian-born queen consort of the future king Gongmin). After being naturalized as a subject of Goryeo, he changed the hanja of his name from "昭" to "紹" (both pronounced so in Korean), married a Korean woman and bore a son (Gong Yeo (), 1329–1397), therefore establishing the Changwon Gong clan (), whose ancestral seat was located in Changwon, South Gyeongsang Province. In 1794, during the reign of King Jeongjo, the clan then changed its name to Gokbu Gong clan () in honor of Confucius's birthplace Qufu ().
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+Famous descendants include actors such as Gong Yoo (real name Gong Ji-cheol (공지철)) and Gong Hyo-jin (공효진); and artists such as male idol group B1A4 member Gongchan (real name Gong Chan-sik (공찬식)), singer-songwriter Minzy (real name Gong Min-ji (공민지)), as well as her great aunt, traditional folk dancer  (공옥진).
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+Despite repeated dynastic change in China, the title of Duke Yansheng was bestowed upon successive generations of descendants until it was abolished by the Nationalist government in 1935. The last holder of the title, Kung Te-cheng of the 77th generation, was appointed Sacrificial Official to Confucius. Kung Te-cheng died in October 2008, and his son, Kung Wei-yi, the 78th lineal descendant, died in 1989. Kung Te-cheng's grandson, Kung Tsui-chang, the 79th lineal descendant, was born in 1975; his great-grandson, Kung Yu-jen, the 80th lineal descendant, was born in Taipei on January 1, 2006. Te-cheng's sister, Kong Demao, lives in mainland China and has written a book about her experiences growing up at the family estate in Qufu. Another sister, Kong Deqi, died as a young woman. Many descendants of Confucius still live in Qufu today.
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+A descendant of Confucius, H. H. Kung, was the Premier of the Republic of China. One of his sons,  (孔令傑), married Debra Paget who gave birth to Gregory Kung ().
+
+Confucius's family, the Kongs, have the longest recorded extant pedigree in the world today. The father-to-son family tree, now in its 83rd generation, has been recorded since the death of Confucius. According to the Confucius Genealogy Compilation Committee (CGCC), he has two million known and registered descendants, and there are an estimated three million in all. Of these, several tens of thousands live outside of China. In the 14th century, a Kong descendant went to Korea, where an estimated 34,000 descendants of Confucius live today. One of the main lineages fled from the Kong ancestral home in Qufu during the Chinese Civil War in the 1940s and eventually settled in Taiwan. There are also branches of the Kong family who have converted to Islam after marrying Muslim women, in Dachuan in Gansu province in the 1800s, and in 1715 in Xuanwei in Yunnan province. Many of the Muslim Confucius descendants are descended from the marriage of Ma Jiaga (), a Muslim woman, and Kong Yanrong (), 59th generation descendant of Confucius in the year 1480, and are found among the Hui and Dongxiang peoples. The new genealogy includes the Muslims. Kong Dejun () is a prominent Islamic scholar and Arabist from Qinghai province and a 77th generation descendant of Confucius.
+
+Because of the huge interest in the Confucius family tree, there was a project in China to test the DNA of known family members of the collateral branches in mainland China. Among other things, this would allow scientists to identify a common Y chromosome in male descendants of Confucius. If the descent were truly unbroken, father-to-son, since Confucius's lifetime, the males in the family would all have the same Y chromosome as their direct male ancestor, with slight mutations due to the passage of time. The aim of the genetic test was to help members of collateral branches in China who lost their genealogical records to prove their descent. However, in 2009, many of the collateral branches decided not to agree to DNA testing. Bryan Sykes, professor of genetics at Oxford University, understands this decision: "The Confucius family tree has an enormous cultural significance ... It's not just a scientific question." The DNA testing was originally proposed to add new members, many of whose family record books were lost during 20th century upheavals, to the Confucian family tree. The main branch of the family which fled to Taiwan was never involved in the proposed DNA test at all.
+
+In 2013, a DNA test performed on multiple different families who claimed descent from Confucius found that they shared the same Y chromosome as reported by Fudan University.
+
+The fifth and most recent edition of the Confucius genealogy was printed by the CGCC. It was unveiled in a ceremony at Qufu on September 24, 2009. Women are now included for the first time.
+
+References
+
+Citations
+
+Bibliography
+
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ .
+
+Further reading
+See  and  for extensive bibliographies
+
+ Clements, Jonathan (2008). Confucius: A Biography. Stroud, Gloucestershire, England: Sutton Publishing. .
+ Confucius (1997). Lun yu, (in English The Analects of Confucius). Translation and notes by Simon Leys. New York: W.W. Norton. .
+ Confucius (2003). Confucius: Analects – With Selections from Traditional Commentaries. Translated by E. Slingerland. Indianapolis: Hackett Publishing. (Original work published c. ) .
+ Creel, Herrlee Glessner (1949). Confucius and the Chinese Way. New York: Harper.
+ 
+ Csikszentmihalyi, M. (2005). "Confucianism: An Overview". In Encyclopedia of Religion (Vol. C, pp. 1890–1905). Detroit: MacMillan Reference
+ 
+ 
+ 
+ . 
+ 
+ Sterckx, Roel. Chinese Thought. From Confucius to Cook Ding. London: Penguin, 2019.
+ Van Norden, B.W., ed. (2001). Confucius and the Analects: New Essays. New York: Oxford University Press. .
+
+External links
+
+ 
+ 
+ 
+ Multilingual web site on Confucius and the Analects
+ The Dao of Kongzi, introduction to the thought of Confucius.
+ 
+ 
+ 
+ Confucian Analects (Project Gutenberg release of James Legge's Translation)
+ Core philosophical passages in the Analects of Confucius.
+
+ 
+551 BC births
+479 BC deaths
+6th-century BC historians
+6th-century BC Chinese philosophers
+6th-century BC Chinese writers
+5th-century BC historians
+5th-century BC Chinese philosophers
+5th-century BC Chinese writers
+Aphorists
+Chinese educational theorists
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+5th-century BC religious leaders
+In mathematics, a complex number is an element of a number system that extends the real numbers with a specific element denoted , called the imaginary unit and satisfying the equation ; every complex number can be expressed in the form , where  and  are real numbers. Because no real number satisfies the above equation,  was called an imaginary number by René Descartes. For the complex number ,  is called the , and  is called the . The set of complex numbers is denoted by either of the symbols  or . Despite the historical nomenclature "imaginary", complex numbers are regarded in the mathematical sciences as just as "real" as the real numbers and are fundamental in many aspects of the scientific description of the natural world.
+
+Complex numbers allow solutions to all polynomial equations, even those that have no solutions in real numbers. More precisely, the fundamental theorem of algebra asserts that every non-constant polynomial equation with real or complex coefficients has a solution which is a complex number. For example, the equation
+
+has no real solution, since the square of a real number cannot be negative, but has the two nonreal complex solutions  and .
+
+Addition, subtraction and multiplication of complex numbers can be naturally defined by using the rule  combined with the associative, commutative, and distributive laws. Every nonzero complex number has a multiplicative inverse. This makes the complex numbers a field that has the real numbers as a subfield. The complex numbers also form a real vector space of dimension two, with  as a standard basis.
+
+This standard basis makes the complex numbers a Cartesian plane, called the complex plane. This allows a geometric interpretation of the complex numbers and their operations, and conversely expressing in terms of complex numbers some geometric properties and constructions. For example, the real numbers form the real line which is identified to the horizontal axis of the complex plane. The complex numbers of absolute value one form the unit circle. The addition of a complex number is a translation in the complex plane, and the multiplication by a complex number is a similarity centered at the origin. The complex conjugation is the reflection symmetry with respect to the real axis. The complex absolute value is a Euclidean norm.
+
+In summary, the complex numbers form a rich structure that is simultaneously an algebraically closed field, a commutative algebra over the reals, and a Euclidean vector space of dimension two.
+
+Definition
+
+A complex number is a number of the form , where  and  are real numbers, and  is an indeterminate satisfying . For example,  is a complex number.
+
+This way, a complex number is defined as a polynomial with real coefficients in the single indeterminate , for which the relation  is imposed. Based on this definition, complex numbers can be added and multiplied, using the addition and multiplication for polynomials. The relation  induces the equalities  and  which hold for all integers ; these allow the reduction of any polynomial that results from the addition and multiplication of complex numbers to a linear polynomial in , again of the form  with real coefficients 
+
+The real number  is called the real part of the complex number ; the real number  is called its imaginary part. To emphasize, the imaginary part does not include a factor ; that is, the imaginary part is , not .
+
+Formally, the complex numbers are defined as the quotient ring of the polynomial ring in the indeterminate , by the ideal generated by the polynomial  (see below).
+
+Notation
+
+A real number  can be regarded as a complex number , whose imaginary part is 0. A purely imaginary number  is a complex number , whose real part is zero. As with polynomials, it is common to write  for  and  for . Moreover, when the imaginary part is negative, that is, , it is common to write  instead of ; for example, for ,  can be written instead of .
+
+Since the multiplication of the indeterminate  and a real is commutative in polynomials with real coefficients, the polynomial  may be written as  This is often expedient for imaginary parts denoted by expressions, for example, when  is a radical.
+
+The real part of a complex number  is denoted by , , or ; the imaginary part of a complex number  is denoted by , , or  For example,
+
+The set of all complex numbers is denoted by  (blackboard bold) or  (upright bold).
+
+In some disciplines, particularly in electromagnetism and electrical engineering,  is used instead of  as  is frequently used to represent electric current. In these cases, complex numbers are written as , or .
+
+Visualization
+
+A complex number  can thus be identified with an ordered pair  of real numbers, which in turn may be interpreted as coordinates of a point in a two-dimensional space. The most immediate space is the Euclidean plane with suitable coordinates, which is then called complex plane or Argand diagram, named after Jean-Robert Argand. Another prominent space on which the coordinates may be projected is the two-dimensional surface of a sphere, which is then called Riemann sphere.
+
+Cartesian complex plane
+The definition of the complex numbers involving two arbitrary real values immediately suggests the use of Cartesian coordinates in the complex plane. The horizontal (real) axis is generally used to display the real part, with increasing values to the right, and the imaginary part marks the vertical (imaginary) axis, with increasing values upwards.
+
+A charted number may be viewed either as the coordinatized point or as a position vector from the origin to this point. The coordinate values of a complex number  can hence be expressed in its Cartesian, rectangular, or algebraic form.
+
+Notably, the operations of addition and multiplication take on a very natural geometric character, when complex numbers are viewed as position vectors: addition corresponds to vector addition, while multiplication (see below) corresponds to multiplying their magnitudes and adding the angles they make with the real axis. Viewed in this way, the multiplication of a complex number by  corresponds to rotating the position vector counterclockwise by a quarter turn (90°) about the origin—a fact which can be expressed algebraically as
+
+Polar complex plane
+
+Modulus and argument
+An alternative option for coordinates in the complex plane is the polar coordinate system that uses the distance of the point  from the origin (), and the angle subtended between the positive real axis and the line segment  in a counterclockwise sense. This leads to the polar form 
+
+of a complex number, where  is the absolute value of , and  is the argument of .
+
+The absolute value (or modulus or magnitude) of a complex number  is
+
+If  is a real number (that is, if ), then . That is, the absolute value of a real number equals its absolute value as a complex number.
+
+By Pythagoras' theorem, the absolute value of a complex number is the distance to the origin of the point representing the complex number in the complex plane.
+
+The argument of  (in many applications referred to as the "phase" ) is the angle of the radius  with the positive real axis, and is written as . As with the modulus, the argument can be found from the rectangular form  by applying the inverse tangent to the quotient of imaginary-by-real parts. By using a half-angle identity, a single branch of the arctan suffices to cover the range  of the -function, and avoids a more subtle case-by-case analysis
+
+Normally, as given above, the principal value in the interval  is chosen. If the arg value is negative, values in the range  or  can be obtained by adding . The value of  is expressed in radians in this article. It can increase by any integer multiple of  and still give the same angle, viewed as subtended by the rays of the positive real axis and from the origin through . Hence, the arg function is sometimes considered as multivalued. The polar angle for the complex number 0 is indeterminate, but arbitrary choice of the polar angle 0 is common.
+
+The value of  equals the result of atan2:
+
+Together,  and  give another way of representing complex numbers, the polar form, as the combination of modulus and argument fully specify the position of a point on the plane. Recovering the original rectangular co-ordinates from the polar form is done by the formula called trigonometric form
+
+Using Euler's formula this can be written as
+
+Using the  function, this is sometimes abbreviated to
+
+In angle notation, often used in electronics to represent a phasor with amplitude  and phase , it is written as
+
+Complex graphs
+
+When visualizing complex functions, both a complex input and output are needed. Because each complex number is represented in two dimensions, visually graphing a complex function would require the perception of a four dimensional space, which is possible only in projections. Because of this, other ways of visualizing complex functions have been designed.
+
+In domain coloring the output dimensions are represented by color and brightness, respectively. Each point in the complex plane as domain is ornated, typically with color representing the argument of the complex number, and brightness representing the magnitude. Dark spots mark moduli near zero, brighter spots are farther away from the origin, the gradation may be discontinuous, but is assumed as monotonous. The colors often vary in steps of  for  to  from red, yellow, green, cyan, blue, to magenta. These plots are called color wheel graphs. This provides a simple way to visualize the functions without losing information. The picture shows zeros for  and poles at
+
+History
+
+The solution in radicals (without trigonometric functions) of a general cubic equation, when all three of its roots are real numbers, contains the square roots of negative numbers, a situation that cannot be rectified by factoring aided by the rational root test, if the cubic is irreducible; this is the so-called  casus irreducibilis ("irreducible case"). This conundrum led Italian mathematician Gerolamo Cardano to conceive of complex numbers in around 1545 in his Ars Magna, though his understanding was rudimentary; moreover he later described complex numbers as "as subtle as they are useless". Cardano did use imaginary numbers, but described using them as "mental torture." This was prior to the use of the graphical complex plane. Cardano and other Italian mathematicians, notably Scipione del Ferro, in the 1500s created an algorithm for solving cubic equations which generally had one real solution and two solutions containing an imaginary number. Since they ignored the answers with the imaginary numbers, Cardano found them useless.
+
+Work on the problem of general polynomials ultimately led to the fundamental theorem of algebra, which shows that with complex numbers, a solution exists to every polynomial equation of degree one or higher. Complex numbers thus form an algebraically closed field, where any polynomial equation has a root.
+
+Many mathematicians contributed to the development of complex numbers. The rules for addition, subtraction, multiplication, and root extraction of complex numbers were developed by the Italian mathematician Rafael Bombelli. A more abstract formalism for the complex numbers was further developed by the Irish mathematician William Rowan Hamilton, who extended this abstraction to the theory of quaternions.
+
+The earliest fleeting reference to square roots of negative numbers can perhaps be said to occur in the work of the Greek mathematician Hero of Alexandria in the 1st century AD, where in his Stereometrica he considered, apparently in error, the volume of an impossible frustum of a pyramid to arrive at the term  in his calculations, which today would simplify to  . Negative quantities were not conceived of in Hellenistic mathematics and Hero merely replaced it by its positive 
+
+The impetus to study complex numbers as a topic in itself first arose in the 16th century when algebraic solutions for the roots of cubic and quartic polynomials were discovered by Italian mathematicians (Niccolò Fontana Tartaglia and Gerolamo Cardano). It was soon realized (but proved much later) that these formulas, even if one were interested only in real solutions, sometimes required the manipulation of square roots of negative numbers. In fact, it was proved later that the use of complex numbers is unavoidable when all three roots are real and distinct. However, the general formula can still be used in this case, with some care to deal with the ambiguity resulting from the existence of three cubic roots for nonzero complex numbers. Rafael Bombelli was the first to address explicitly these seemingly paradoxical solutions of cubic equations and developed the rules for complex arithmetic, trying to resolve these issues.
+
+The term "imaginary" for these quantities was coined by René Descartes in 1637, who was at pains to stress their unreal nature:
+
+A further source of confusion was that the equation  seemed to be capriciously inconsistent with the algebraic identity , which is valid for non-negative real numbers  and , and which was also used in complex number calculations with one of ,  positive and the other negative. The incorrect use of this identity in the case when both  and  are negative, and the related identity , even bedeviled Leonhard Euler. This difficulty eventually led to the convention of using the special symbol  in place of  to guard against this mistake. Even so, Euler considered it natural to introduce students to complex numbers much earlier than we do today. In his elementary algebra text book, Elements of Algebra, he introduces these numbers almost at once and then uses them in a natural way throughout.
+
+In the 18th century complex numbers gained wider use, as it was noticed that formal manipulation of complex expressions could be used to simplify calculations involving trigonometric functions. For instance, in 1730 Abraham de Moivre noted that the identities relating trigonometric functions of an integer multiple of an angle to powers of trigonometric functions of that angle could be re-expressed by the following de Moivre's formula:
+
+In 1748, Euler went further and obtained Euler's formula of complex analysis:
+
+by formally manipulating complex power series and observed that this formula could be used to reduce any trigonometric identity to much simpler exponential identities.
+
+The idea of a complex number as a point in the complex plane (above) was first described by Danish–Norwegian mathematician Caspar Wessel in 1799, although it had been anticipated as early as 1685 in Wallis's A Treatise of Algebra.
+
+Wessel's memoir appeared in the Proceedings of the Copenhagen Academy but went largely unnoticed. In 1806 Jean-Robert Argand independently issued a pamphlet on complex numbers and provided a rigorous proof of the fundamental theorem of algebra. Carl Friedrich Gauss had earlier published an essentially topological proof of the theorem in 1797 but expressed his doubts at the time about "the true metaphysics of the square root of −1". It was not until 1831 that he overcame these doubts and published his treatise on complex numbers as points in the plane, largely establishing modern notation and terminology:
+
+If one formerly contemplated this subject from a false point of view and therefore found a mysterious darkness, this is in large part attributable to clumsy terminology. Had one not called +1, −1,  positive, negative, or imaginary (or even impossible) units, but instead, say, direct, inverse, or lateral units, then there could scarcely have been talk of such darkness.
+
+In the beginning of the 19th century, other mathematicians discovered independently the geometrical representation of the complex numbers: Buée, Mourey, Warren, Français and his brother, Bellavitis.
+
+The English mathematician G.H. Hardy remarked that Gauss was the first mathematician to use complex numbers in "a really confident and scientific way" although mathematicians such as Norwegian Niels Henrik Abel and Carl Gustav Jacob Jacobi were necessarily using them routinely before Gauss published his 1831 treatise.
+
+Augustin-Louis Cauchy and Bernhard Riemann together brought the fundamental ideas of complex analysis to a high state of completion, commencing around 1825 in Cauchy's case.
+
+The common terms used in the theory are chiefly due to the founders. Argand called  the direction factor, and  the modulus; Cauchy (1821) called  the reduced form (l'expression réduite) and apparently introduced the term argument; Gauss used  for , introduced the term complex number for , and called  the norm. The expression direction coefficient, often used for , is due to Hankel (1867), and absolute value, for modulus, is due to Weierstrass.
+
+Later classical writers on the general theory include Richard Dedekind, Otto Hölder, Felix Klein, Henri Poincaré, Hermann Schwarz, Karl Weierstrass and many others. Important work (including a systematization) in complex multivariate calculus has been started at beginning of the 20th century. Important results have been achieved by Wilhelm Wirtinger in 1927.
+
+Relations and operations
+
+Equality
+Complex numbers have a similar definition of equality to real numbers; two complex numbers  and  are equal if and only if both their real and imaginary parts are equal, that is, if  and . Nonzero complex numbers written in polar form are equal if and only if they have the same magnitude and their arguments differ by an integer multiple of .
+
+Ordering
+Unlike the real numbers, there is no natural ordering of the complex numbers. In particular, there is no linear ordering on the complex numbers that is compatible with addition and multiplication. Hence, the complex numbers do not have the structure of an ordered field. One explanation for this is that every non-trivial sum of squares in an ordered field is nonzero, and  is a non-trivial sum of squares. Thus, complex numbers are naturally thought of as existing on a two-dimensional plane.
+
+Conjugate
+
+The complex conjugate of the complex number  is given by . It is denoted by either  or . This unary operation on complex numbers cannot be expressed by applying only their basic operations addition, subtraction, multiplication and division.
+
+Geometrically,  is the "reflection" of  about the real axis. Conjugating twice gives the original complex number
+
+which makes this operation an involution. The reflection leaves both the real part and the magnitude of  unchanged, that is
+ and 
+
+The imaginary part and the argument of a complex number  change their sign under conjugation
+
+For details on argument and magnitude, see the section on Polar form.
+
+The product of a complex number  and its conjugate is known as the absolute square. It is always a non-negative real number and equals the square of the magnitude of each:
+
+This property can be used to convert a fraction with a complex denominator to an equivalent fraction with a real denominator by expanding both numerator and denominator of the fraction by the conjugate of the given denominator. This process is sometimes called "rationalization" of the denominator (although the denominator in the final expression might be an irrational real number), because it resembles the method to remove roots from simple expressions in a denominator.
+
+The real and imaginary parts of a complex number  can be extracted using the conjugation:
+
+Moreover, a complex number is real if and only if it equals its own conjugate.
+
+Conjugation distributes over the basic complex arithmetic operations:
+
+Conjugation is also employed in inversive geometry, a branch of geometry studying reflections more general than ones about a line. In the network analysis of electrical circuits, the complex conjugate is used in finding the equivalent impedance when the maximum power transfer theorem is looked for.
+
+Addition and subtraction
+
+Two complex numbers  and  are most easily added by separately adding their real and imaginary parts. That is to say:
+
+Similarly, subtraction can be performed as
+
+Multiplication of a complex number  and a real number  can be done similarly by multiplying separately  and the real and imaginary parts of :
+
+In particular, subtraction can be done by negating the subtrahend (that is multiplying it with ) and adding the result to the minuend:
+
+Using the visualization of complex numbers in the complex plane, addition has the following geometric interpretation: the sum of two complex numbers  and , interpreted as points in the complex plane, is the point obtained by building a parallelogram from the three vertices , and the points of the arrows labeled  and  (provided that they are not on a line). Equivalently, calling these points , , respectively and the fourth point of the parallelogram  the triangles  and  are congruent.
+
+Multiplication and square
+The rules of  the distributive property, the commutative properties (of addition and multiplication), and the defining property  apply to complex numbers. It follows that 
+
+In particular,
+
+Reciprocal and division
+Using the conjugate, the reciprocal of a nonzero complex number  can be broken into real and imaginary components
+
+This can be used to express a division of an arbitrary complex number  by a non-zero complex number  as
+
+Multiplication and division in polar form
+
+Formulas for multiplication, division and exponentiation are simpler in polar form than the corresponding formulas in Cartesian coordinates. Given two complex numbers  and , because of the trigonometric identities
+
+we may derive
+
+In other words, the absolute values are multiplied and the arguments are added to yield the polar form of the product. For example, multiplying by  corresponds to a quarter-turn counter-clockwise, which gives back . The picture at the right illustrates the multiplication of
+
+Since the real and imaginary part of  are equal, the argument of that number is 45 degrees, or  (in radian). On the other hand, it is also the sum of the angles at the origin of the red and blue triangles are arctan(1/3) and arctan(1/2), respectively. Thus, the formula
+
+holds. As the arctan function can be approximated highly efficiently, formulas like this – known as Machin-like formulas – are used for high-precision approximations of .
+
+Similarly, division is given by
+
+Square root
+
+The square roots of  (with ) are , where
+
+and
+
+where  is the signum function. This can be seen by squaring  to obtain . Here  is called the modulus of , and the square root sign indicates the square root with non-negative real part, called the principal square root; also  where .
+
+Exponential function
+The exponential function  can be defined for every complex number  by the power series
+
+which has an infinite radius of convergence.
+
+The value at  of the exponential function is Euler's number
+
+If  is real, one has 
+
+Analytic continuation allows extending this equality for every complex value of , and thus to define the complex exponentiation with base  as
+
+Functional equation
+The exponential function satisfies the functional equation 
+This can be proved either by comparing the power series expansion of both members or by applying analytic continuation from the restriction of the equation to real arguments.
+
+Euler's formula
+Euler's formula states that, for any real number ,
+
+The functional equation implies thus that, if  and  are real, one has
+
+which is the decomposition of the exponential function into its real and imaginary parts.
+
+Complex logarithm
+In the real case, the natural logarithm can be defined as the inverse 
+ of the exponential function. For extending this to the complex domain, one can start from Euler's formula. It implies that, if a complex number  is written in polar form
+
+with  then with
+
+as complex logarithm one has a proper inverse:
+
+However, because cosine and sine are periodic functions, the addition of an integer multiple of  to  does not change . For example,  , so both  and  are possible values for the natural logarithm of .
+
+Therefore, if the complex logarithm is not to be defined as a multivalued function
+
+one has to use a branch cut and to restrict the codomain, resulting in the bijective function
+
+If  is not a non-positive real number (a positive or a non-real number), the resulting principal value of the complex logarithm is obtained with . It is an analytic function outside the negative real numbers, but it cannot be prolongated to a function that is continuous at any negative real number , where the principal value is .
+
+Exponentiation
+If  is real and  complex, the exponentiation is defined as 
+
+where  denotes the natural logarithm.
+
+It seems natural to extend this formula to complex values of , but there are some difficulties resulting from the fact that the complex logarithm is not really a function, but a multivalued function.
+
+It follows that if  is as above, and if  is another complex number, then the exponentiation is the multivalued function
+
+Integer and fractional exponents
+
+If, in the preceding formula,  is an integer, then the sine and the cosine are independent of . Thus, if the exponent  is an integer, then  is well defined, and the exponentiation formula simplifies to de Moivre's formula:
+
+The  th roots of a complex number  are given by
+
+for . (Here  is the usual (positive) th root of the positive real number .) Because sine and cosine are periodic, other integer values of  do not give other values.
+
+While the th root of a positive real number  is chosen to be the positive real number  satisfying , there is no natural way of distinguishing one particular complex th root of a complex number. Therefore, the th root is a -valued function of . This implies that, contrary to the case of positive real numbers, one has  
+
+since the left-hand side consists of  values, and the right-hand side is a single value.
+
+Properties
+
+Field structure
+The set  of complex numbers is a field. Briefly, this means that the following facts hold: first, any two complex numbers can be added and multiplied to yield another complex number. Second, for any complex number , its additive inverse  is also a complex number; and third, every nonzero complex number has a reciprocal complex number. Moreover, these operations satisfy a number of laws, for example the law of commutativity of addition and multiplication for any two complex numbers  and :
+
+These two laws and the other requirements on a field can be proven by the formulas given above, using the fact that the real numbers themselves form a field.
+
+Unlike the reals,  is not an ordered field, that is to say, it is not possible to define a relation  that is compatible with the addition and multiplication. In fact, in any ordered field, the square of any element is necessarily positive, so  precludes the existence of an ordering on 
+
+When the underlying field for a mathematical topic or construct is the field of complex numbers, the topic's name is usually modified to reflect that fact. For example: complex analysis, complex matrix, complex polynomial, and complex Lie algebra.
+
+Solutions of polynomial equations
+Given any complex numbers (called coefficients) , the equation
+
+has at least one complex solution z, provided that at least one of the higher coefficients  is nonzero. This is the statement of the fundamental theorem of algebra, of Carl Friedrich Gauss and Jean le Rond d'Alembert. Because of this fact,  is called an algebraically closed field. This property does not hold for the field of rational numbers  (the polynomial  does not have a rational root, since √2 is not a rational number) nor the real numbers  (the polynomial  does not have a real root for , since the square of  is positive for any real number ).
+
+There are various proofs of this theorem, by either analytic methods such as Liouville's theorem, or topological ones such as the winding number, or a proof combining Galois theory and the fact that any real polynomial of odd degree has at least one real root.
+
+Because of this fact, theorems that hold for any algebraically closed field apply to  For example, any non-empty complex square matrix has at least one (complex) eigenvalue.
+
+Algebraic characterization
+The field  has the following three properties:
+ First, it has characteristic 0. This means that  for any number of summands (all of which equal one).
+ Second, its transcendence degree over , the prime field of  is the cardinality of the continuum.
+ Third, it is algebraically closed (see above).
+It can be shown that any field having these properties is isomorphic (as a field) to  For example, the algebraic closure of the field  of the -adic number also satisfies these three properties, so these two fields are isomorphic (as fields, but not as topological fields). Also,  is isomorphic to the field of complex Puiseux series. However, specifying an isomorphism requires the axiom of choice. Another consequence of this algebraic characterization is that  contains many proper subfields that are isomorphic to .
+
+Characterization as a topological field
+The preceding characterization of  describes only the algebraic aspects of  That is to say, the properties of nearness and continuity, which matter in areas such as analysis and topology, are not dealt with. The following description of  as a topological field (that is, a field that is equipped with a topology, which allows the notion of convergence) does take into account the topological properties.  contains a subset  (namely the set of positive real numbers) of nonzero elements satisfying the following three conditions:
+  is closed under addition, multiplication and taking inverses.
+ If  and  are distinct elements of , then either  or  is in .
+ If  is any nonempty subset of , then  for some  in 
+Moreover,  has a nontrivial involutive automorphism  (namely the complex conjugation), such that  is in  for any nonzero  in 
+
+Any field  with these properties can be endowed with a topology by taking the sets  as a base, where  ranges over the field and  ranges over . With this topology  is isomorphic as a topological field to 
+
+The only connected locally compact topological fields are  and  This gives another characterization of  as a topological field, since  can be distinguished from  because the nonzero complex numbers are connected, while the nonzero real numbers are not.
+
+Formal construction
+
+Construction as ordered pairs
+William Rowan Hamilton introduced the approach to define the set  of complex numbers as the set  of  of real numbers, in which the following rules for addition and multiplication are imposed:
+
+It is then just a matter of notation to express  as .
+
+Construction as a quotient field
+Though this low-level construction does accurately describe the structure of the complex numbers, the following equivalent definition reveals the algebraic nature of  more immediately. This characterization relies on the notion of fields and polynomials. A field is a set endowed with addition, subtraction, multiplication and division operations that behave as is familiar from, say, rational numbers. For example, the distributive law
+
+must hold for any three elements ,  and  of a field. The set  of real numbers does form a field. A polynomial  with real coefficients is an expression of the form
+
+where the  are real numbers. The usual addition and multiplication of polynomials endows the set  of all such polynomials with a ring structure. This ring is called the polynomial ring over the real numbers.
+
+The set of complex numbers is defined as the quotient ring  This extension field contains two square roots of , namely (the cosets of)  and , respectively. (The cosets of)  and  form a basis of  as a real vector space, which means that each element of the extension field can be uniquely written as a linear combination in these two elements. Equivalently, elements of the extension field can be written as ordered pairs  of real numbers.  The quotient ring is a field, because  is irreducible over  so the ideal it generates is maximal.
+
+The formulas for addition and multiplication in the ring  modulo the relation , correspond to the formulas for addition and multiplication of complex numbers defined as ordered pairs.  So the two definitions of the field  are isomorphic (as fields).
+
+Accepting that  is algebraically closed, since it is an algebraic extension of  in this approach,  is therefore the algebraic closure of
+
+Matrix representation of complex numbers
+Complex numbers  can also be represented by  matrices that have the form:
+
+Here the entries  and  are real numbers. As the sum and product of two such matrices is again of this form, these matrices form a subring of the ring  matrices.
+
+A simple computation shows that the map:
+
+is a ring isomorphism from the field of complex numbers to the ring of these matrices. This isomorphism associates the square of the absolute value of a complex number with the determinant of the corresponding matrix, and the conjugate of a complex number with the transpose of the matrix.
+
+The geometric description of the multiplication of complex numbers can also be expressed in terms of rotation matrices by using this correspondence between complex numbers and such matrices. The action of the matrix on a vector  corresponds to the multiplication of  by . In particular, if the determinant is , there is a real number  such that the matrix has the form:
+
+In this case, the action of the matrix on vectors and the multiplication by the complex number  are both the rotation of the angle .
+
+Complex analysis
+
+The study of functions of a complex variable is known as complex analysis and has enormous practical use in applied mathematics as well as in other branches of mathematics. Often, the most natural proofs for statements in real analysis or even number theory employ techniques from complex analysis (see prime number theorem for an example). Unlike real functions, which are commonly represented as two-dimensional graphs, complex functions have four-dimensional graphs and may usefully be illustrated by color-coding a three-dimensional graph to suggest four dimensions, or by animating the complex function's dynamic transformation of the complex plane.
+
+Complex exponential and related functions
+The notions of convergent series and continuous functions in (real) analysis have natural analogs in complex analysis. A sequence  of complex numbers is said to converge if and only if its real and imaginary parts do. This is equivalent to the (ε, δ)-definition of limits, where the absolute value of real numbers is replaced by the one of complex numbers. From a more abstract point of view, , endowed with the metric
+
+is a complete metric space, which notably includes the triangle inequality
+
+for any two complex numbers  and .
+
+Like in real analysis, this notion of convergence is used to construct a number of elementary functions: the exponential function , also written , is defined as the infinite series
+
+The series defining the real trigonometric functions sine and cosine, as well as the hyperbolic functions sinh and cosh, also carry over to complex arguments without change. For the other trigonometric and hyperbolic functions, such as tangent, things are slightly more complicated, as the defining series do not converge for all complex values. Therefore, one must define them either in terms of sine, cosine and exponential, or, equivalently, by using the method of analytic continuation.
+
+Euler's formula states:
+
+for any real number , in particular
+, which is Euler's identity.
+Unlike in the situation of real numbers, there is an infinitude of complex solutions  of the equation
+
+for any complex number . It can be shown that any such solution  – called complex logarithm of  – satisfies
+
+where arg is the argument defined above, and ln the (real) natural logarithm. As arg is a multivalued function, unique only up to a multiple of , log is also multivalued. The principal value of log is often taken by restricting the imaginary part to the interval .
+
+Complex exponentiation  is defined as
+
+and is multi-valued, except when  is an integer. For , for some natural number , this recovers the non-uniqueness of th roots mentioned above.
+
+Complex numbers, unlike real numbers, do not in general satisfy the unmodified power and logarithm identities, particularly when naïvely treated as single-valued functions; see failure of power and logarithm identities. For example, they do not satisfy
+
+Both sides of the equation are multivalued by the definition of complex exponentiation given here, and the values on the left are a subset of those on the right.
+
+Holomorphic functions
+For a function f:  →  to be holomorphic, a necessary (but not sufficient) condition is that it satisfies the Cauchy–Riemann equations. For example, any -linear map  →  can be written in the form
+
+with complex coefficients  and . This map is holomorphic if and only if . The function  is real-differentiable, but does not satisfy the Cauchy–Riemann equations.
+
+Complex analysis shows some features not apparent in real analysis. For example, any two holomorphic functions  and  that agree on an arbitrarily small open subset of  necessarily agree everywhere. Meromorphic functions, functions that can locally be written as  with a holomorphic function , still share some of the features of holomorphic functions. Other functions have essential singularities, such as  at .
+
+Applications
+Complex numbers have applications in many scientific areas, including signal processing, control theory, electromagnetism, fluid dynamics, quantum mechanics, cartography, and vibration analysis. Some of these applications are described below.
+
+Geometry
+
+Shapes
+Three non-collinear points  in the plane determine the shape of the triangle . Locating the points in the complex plane, this shape of a triangle may be expressed by complex arithmetic as
+
+The shape  of a triangle will remain the same, when the complex plane is transformed by translation or dilation (by an affine transformation), corresponding to the intuitive notion of shape, and describing similarity. Thus each triangle  is in a similarity class of triangles with the same shape.
+
+Fractal geometry
+
+The Mandelbrot set is a popular example of a fractal formed on the complex plane. It is defined by plotting every location  where iterating the sequence  does not diverge when iterated infinitely. Similarly, Julia sets have the same rules, except where  remains constant.
+
+Triangles
+Every triangle has a unique Steiner inellipse – an ellipse inside the triangle and tangent to the midpoints of the three sides of the triangle. The foci of a triangle's Steiner inellipse can be found as follows, according to Marden's theorem: Denote the triangle's vertices in the complex plane as , , and . Write the cubic equation , take its derivative, and equate the (quadratic) derivative to zero. Marden's theorem says that the solutions of this equation are the complex numbers denoting the locations of the two foci of the Steiner inellipse.
+
+Algebraic number theory
+
+As mentioned above, any nonconstant polynomial equation (in complex coefficients) has a solution in . A fortiori, the same is true if the equation has rational coefficients. The roots of such equations are called algebraic numbers – they are a principal object of study in algebraic number theory. Compared to , the algebraic closure of , which also contains all algebraic numbers,  has the advantage of being easily understandable in geometric terms. In this way, algebraic methods can be used to study geometric questions and vice versa. With algebraic methods, more specifically applying the machinery of field theory to the number field containing roots of unity, it can be shown that it is not possible to construct a regular nonagon using only compass and straightedge – a purely geometric problem.
+
+Another example is the Gaussian integers; that is, numbers of the form , where  and  are integers, which can be used to classify sums of squares.
+
+Analytic number theory
+
+Analytic number theory studies numbers, often integers or rationals, by taking advantage of the fact that they can be regarded as complex numbers, in which analytic methods can be used. This is done by encoding number-theoretic information in complex-valued functions. For example, the Riemann zeta function  is related to the distribution of prime numbers.
+
+Improper integrals
+In applied fields, complex numbers are often used to compute certain real-valued improper integrals, by means of complex-valued functions. Several methods exist to do this; see methods of contour integration.
+
+Dynamic equations
+In differential equations, it is common to first find all complex roots  of the characteristic equation of a linear differential equation or equation system and then attempt to solve the system in terms of base functions of the form . Likewise, in difference equations, the complex roots  of the characteristic equation of the difference equation system are used, to attempt to solve the system in terms of base functions of the form .
+
+Linear algebra 
+Eigendecomposition is a useful tool for computing matrix powers and matrix exponentials. However, it often requires the use of complex numbers, even if the matrix is real (for example, a rotation matrix).
+
+Complex numbers often generalize concepts originally conceived in the real numbers. For example, the conjugate transpose generalizes the transpose, hermitian matrices generalize symmetric matrices, and unitary matrices generalize orthogonal matrices.
+
+In applied mathematics
+
+Control theory
+
+In control theory, systems are often transformed from the time domain to the complex frequency domain using the Laplace transform. The system's zeros and poles are then analyzed in the complex plane. The root locus, Nyquist plot, and Nichols plot techniques all make use of the complex plane.
+
+In the root locus method, it is important whether zeros and poles are in the left or right half planes, that is, have real part greater than or less than zero. If a linear, time-invariant (LTI) system has poles that are
+
+ in the right half plane, it will be unstable,
+ all in the left half plane, it will be stable,
+ on the imaginary axis, it will have marginal stability.
+
+If a system has zeros in the right half plane, it is a nonminimum phase system.
+
+Signal analysis
+Complex numbers are used in signal analysis and other fields for a convenient description for periodically varying signals. For given real functions representing actual physical quantities, often in terms of sines and cosines, corresponding complex functions are considered of which the real parts are the original quantities. For a sine wave of a given frequency, the absolute value  of the corresponding  is the amplitude and the argument  is the phase.
+
+If Fourier analysis is employed to write a given real-valued signal as a sum of periodic functions, these periodic functions are often written as complex-valued functions of the form
+
+and
+
+where ω represents the angular frequency and the complex number A encodes the phase and amplitude as explained above.
+
+This use is also extended into digital signal processing and digital image processing, which use digital versions of Fourier analysis (and wavelet analysis) to transmit, compress, restore, and otherwise process digital audio signals, still images, and video signals.
+
+Another example, relevant to the two side bands of amplitude modulation of AM radio, is:
+
+In physics
+
+Electromagnetism and electrical engineering
+
+In electrical engineering, the Fourier transform is used to analyze varying voltages and currents. The treatment of resistors, capacitors, and inductors can then be unified by introducing imaginary, frequency-dependent resistances for the latter two and combining all three in a single complex number called the impedance. This approach is called phasor calculus.
+
+In electrical engineering, the imaginary unit is denoted by , to avoid confusion with , which is generally in use to denote electric current, or, more particularly, , which is generally in use to denote instantaneous electric current.
+
+Since the voltage in an AC circuit is oscillating, it can be represented as
+
+To obtain the measurable quantity, the real part is taken:
+
+The complex-valued signal  is called the analytic representation of the real-valued, measurable signal .
+
+Fluid dynamics
+In fluid dynamics, complex functions are used to describe potential flow in two dimensions.
+
+Quantum mechanics
+The complex number field is intrinsic to the mathematical formulations of quantum mechanics, where complex Hilbert spaces provide the context for one such formulation that is convenient and perhaps most standard. The original foundation formulas of quantum mechanics – the Schrödinger equation and Heisenberg's matrix mechanics – make use of complex numbers.
+
+Relativity
+In special and general relativity, some formulas for the metric on spacetime become simpler if one takes the time component of the spacetime continuum to be imaginary. (This approach is no longer standard in classical relativity, but is used in an essential way in quantum field theory.) Complex numbers are essential to spinors, which are a generalization of the tensors used in relativity.
+
+Generalizations and related notions
+
+The process of extending the field  of reals to  is known as the Cayley–Dickson construction. It can be carried further to higher dimensions, yielding the quaternions  and octonions  which (as a real vector space) are of dimension 4 and 8, respectively.
+In this context the complex numbers have been called the binarions.
+
+Just as by applying the construction to reals the property of ordering is lost, properties familiar from real and complex numbers vanish with each extension. The quaternions lose commutativity, that is,  for some quaternions , and the multiplication of octonions, additionally to not being commutative, fails to be associative:  for some octonions .
+
+Reals, complex numbers, quaternions and octonions are all normed division algebras over . By Hurwitz's theorem they are the only ones; the sedenions, the next step in the Cayley–Dickson construction, fail to have this structure.
+
+The Cayley–Dickson construction is closely related to the regular representation of  thought of as an -algebra (an -vector space with a multiplication), with respect to the basis . This means the following: the -linear map
+
+for some fixed complex number  can be represented by a  matrix (once a basis has been chosen). With respect to the basis , this matrix is
+
+that is, the one mentioned in the section on matrix representation of complex numbers above. While this is a linear representation of  in the 2 × 2 real matrices, it is not the only one. Any matrix
+
+has the property that its square is the negative of the identity matrix: . Then
+
+is also isomorphic to the field  and gives an alternative complex structure on  This is generalized by the notion of a linear complex structure.
+
+Hypercomplex numbers also generalize    and  For example, this notion contains the split-complex numbers, which are elements of the ring  (as opposed to  for complex numbers). In this ring, the equation  has four solutions.
+
+The field  is the completion of  the field of rational numbers, with respect to the usual absolute value metric. Other choices of metrics on  lead to the fields  of -adic numbers (for any prime number ), which are thereby analogous to . There are no other nontrivial ways of completing  than  and  by Ostrowski's theorem. The algebraic closures  of  still carry a norm, but (unlike ) are not complete with respect to it. The completion  of  turns out to be algebraically closed. By analogy, the field is called -adic complex numbers.
+
+The fields   and their finite field extensions, including  are called local fields.
+
+See also
+
+ Algebraic surface
+ Circular motion using complex numbers
+ Complex-base system
+ Complex geometry
+ Dual-complex number
+ Eisenstein integer
+ Euler's identity
+ Geometric algebra (which includes the complex plane as the 2-dimensional spinor subspace )
+ Unit complex number
+
+Notes
+
+References
+
+Works cited
+
+Further reading
+
+Mathematical
+
+Historical
+
+ 
+ 
+ 
+  — A gentle introduction to the history of complex numbers and the beginnings of complex analysis.
+  — An advanced perspective on the historical development of the concept of number.
+
+Composition algebras
+Cryptozoology is a pseudoscience and subculture that searches for and studies unknown, legendary, or extinct animals whose present existence is disputed or unsubstantiated, particularly those popular in folklore, such as Bigfoot, the Loch Ness Monster, Yeti, the chupacabra, the Jersey Devil, or the Mokele-mbembe.  Cryptozoologists refer to these entities as cryptids, a term coined by the subculture. Because it does not follow the scientific method, cryptozoology is considered a pseudoscience by mainstream science: it is neither a branch of zoology nor of folklore studies. It was originally founded in the 1950s by zoologists Bernard Heuvelmans and Ivan T. Sanderson.
+
+Scholars have noted that the subculture rejected mainstream approaches from an early date, and that adherents often express hostility to mainstream science. Scholars have studied cryptozoologists and their influence (including cryptozoology's association with Young Earth creationism), noted parallels in cryptozoology and other pseudosciences such as ghost hunting and ufology, and highlighted uncritical media propagation of cryptozoologist claims.
+
+Terminology, history, and approach
+As a field, cryptozoology originates from  the works of Bernard Heuvelmans, a Belgian zoologist, and Ivan T. Sanderson, a Scottish zoologist. Notably, Heuvelmans published On the Track of Unknown Animals (French Sur la Piste des Bêtes Ignorées) in 1955, a landmark work among cryptozoologists that was followed by numerous other like works. Similarly, Sanderson published a series of books that contributed to the developing hallmarks of cryptozoology, including Abominable Snowmen: Legend Come to Life (1961). Heuvelmans himself traced cryptozoology to the work of Anthonie Cornelis Oudemans, who theorized that a large unidentified species of seal was responsible for sea serpent reports.
+
+The term cryptozoology dates from 1959 or before—Heuvelmans attributes the coinage of the term cryptozoology 'the study of hidden animals' (from Ancient Greek: κρυπτός, kryptós "hidden, secret"; Ancient Greek ζῷον, zōion "animal", and λόγος, logos, i.e. "knowledge, study") to Sanderson. Following cryptozoology, the term cryptid was coined in 1983 by cryptozoologist J. E. Wall in the summer issue of the International Society of Cryptozoology newsletter. According to Wall "[It has been] suggested that new terms be coined to replace sensational and often misleading terms like 'monster'. My suggestion is 'cryptid', meaning a living thing having the quality of being hidden or unknown ... describing those creatures which are (or may be) subjects of cryptozoological investigation." 
+
+The Oxford English Dictionary defines the noun cryptid as "an animal whose existence or survival to the present day is disputed or unsubstantiated; any animal of interest to a cryptozoologist". While used by most cryptozoologists, the term cryptid is not used by academic zoologists. In a textbook aimed at undergraduates, academics Caleb W. Lack and Jacques Rousseau note that the subculture's focus on what it deems to be "cryptids" is a pseudoscientic extension of older belief in monsters and other similar entities from the folkloric record, yet with a "new, more scientific-sounding name: cryptids".
+
+While biologists regularly identify new species, cryptozoologists often focus on creatures from the folkloric record. Most famously, these include the Loch Ness Monster, Bigfoot, the chupacabra, as well as other "imposing beasts that could be labeled as monsters". In their search for these entities, cryptozoologists may employ devices such as motion-sensitive cameras, night-vision equipment, and audio-recording equipment. While there have been attempts to codify cryptozoological approaches, unlike biologists, zoologists, botanists, and other academic disciplines, however, "there are no accepted, uniform, or successful methods for pursuing cryptids". Some scholars have identified precursors to modern cryptozoology in certain medieval approaches to the folkloric record, and the psychology behind the cryptozoology approach has been the subject of academic study.
+
+Few cryptozoologists have a formal science education, and fewer still have a science background directly relevant to cryptozoology. Adherents often misrepresent the academic backgrounds of cryptozoologists. According to writer Daniel Loxton and paleontologist Donald Prothero, "[c]ryptozoologists have often promoted 'Professor Roy Mackal, PhD.' as one of their leading figures and one of the few with a legitimate doctorate in biology. What is rarely mentioned, however, is that he had no training that would qualify him to undertake competent research on exotic animals. This raises the specter of 'credential mongering', by which an individual or organization feints a person's graduate degree as proof of expertise, even though his or her training is not specifically relevant to the field under consideration." Besides Heuvelmans, Sanderson, and Mackal, other notable cryptozoologists with academic backgrounds include Grover Krantz, Karl Shuker, and Richard Greenwell.
+
+Historically, notable cryptozoologists have often identified instances featuring "irrefutable evidence" (such as Sanderson and Krantz), only for the evidence to be revealed as the product of a hoax. This may occur during a closer examination by experts or upon confession of the hoaxer.
+
+Expeditions 
+Cryptozoologists have often led expeditions to find evidence of cryptids, to few results. Bigfoot researcher René Dahinden led unsuccessful expedition into caves to find evidence of sasquatch. Lensgrave Adam Christoffer Knuth led an expedition into Lake Tele in the Congo to find the mokele-mbembe in 2018. While they didn't find any evidence for the cryptid, they did find a new species of green algae. Mark van Roosmalen, a Dutch-Brazilian primatologist, is one of the few biologists who have discovered new species of animals to consider his work cryptozoology.
+
+Young Earth creationism
+A subset of cryptozoology promotes the pseudoscience of Young Earth creationism, rejecting conventional science in favor of a Biblical interpretation and promoting concepts such as "living dinosaurs". Science writer Sharon A. Hill observes that the Young Earth creationist segment of cryptozoology is "well-funded and able to conduct expeditions with a goal of finding a living dinosaur that they think would invalidate evolution".
+
+Anthropologist Jeb J. Card says that "[c]reationists have embraced cryptozoology and some cryptozoological expeditions are funded by and conducted by creationists hoping to disprove evolution." In a 2013 interview, paleontologist Donald Prothero notes an uptick in creationist cryptozoologists. He observes that "[p]eople who actively search for Loch Ness monsters or Mokele Mbembe do it entirely as creationist ministers. They think that if they found a dinosaur in the Congo it would overturn all of evolution. It wouldn't. It would just be a late-occurring dinosaur, but that's their mistaken notion of evolution."
+
+Citing a 2013 exhibit at the Petersburg, Kentucky-based Creation Museum, which claimed that dragons were once biological creatures who walked the earth alongside humanity and is broadly dedicated to Young Earth creationism, religious studies academic Justin Mullis notes that "[c]ryptozoology has a long and curious history with Young Earth Creationism, with this new exhibit being just one of the most recent examples".
+
+Academic Paul Thomas analyzes the influence and connections between cryptozoology in his 2020 study of the Creation Museum and the creationist theme park Ark Encounter. Thomas comments that, "while the Creation Museum and the Ark Encounter are flirting with pseudoarchaeology, coquettishly whispering pseudoarchaeological rhetoric, they are each fully in bed with cryptozoology" and observes that "[y]oung-earth creationists and cryptozoologists make natural bed fellows. As with pseudoarchaeology, both young-earth creationists and cryptozoologists bristle at the rejection of mainstream secular science and lament a seeming conspiracy to prevent serious consideration of their claims."
+
+Lack of critical media coverage
+Media outlets have often uncritically disseminated information from cryptozoologist sources, including newspapers that repeat false claims made by cryptozoologists or television shows that feature cryptozoologists as monster hunters (such as the popular and purportedly nonfiction American television show MonsterQuest, which aired from 2007 to 2010). Media coverage of purported "cryptids" often fails to provide more likely explanations, further propagating claims made by cryptozoologists.
+
+Reception and pseudoscience
+There is a broad consensus among academics that cryptozoology is a pseudoscience. The subculture is regularly criticized for reliance on anecdotal information and because in the course of investigating animals that most scientists believe are unlikely to have existed, cryptozoologists do not follow the scientific method. No academic course of study nor university degree program grants the status of cryptozoologist and the subculture is primarily the domain of individuals without training in the natural sciences.
+
+Anthropologist Jeb J. Card summarizes cryptozoology in a survey of pseudoscience and pseudoarchaeology:
+
+Card notes that "cryptozoologists often show their disdain and even hatred for professional scientists, including those who enthusiastically participated in cryptozoology", which he traces back to Heuvelmans's early "rage against critics of cryptozoology". He finds parallels with cryptozoology and other pseudosciences, such as ghost hunting and ufology, and compares the approach of cryptozoologists to colonial big-game hunters, and to aspects of European imperialism. According to Card, "[m]ost cryptids are framed as the subject of indigenous legends typically collected in the heyday of comparative folklore, though such legends may be heavily modified or worse. Cryptozoology's complicated mix of sympathy, interest, and appropriation of indigenous culture (or non-indigenous construction of it) is also found in New Age circles and dubious "Indian burial grounds" and other legends [...] invoked in hauntings such as the "Amityville" hoax [...]".
+
+In a 2011 foreword for The American Biology Teacher, then National Association of Biology Teachers president Dan Ward uses cryptozoology as an example of "technological pseudoscience" that may confuse students about the scientific method. Ward says that "Cryptozoology [...] is not valid science or even science at all. It is monster hunting." Historian of science Brian Regal includes an entry for cryptozoology in his Pseudoscience: A Critical Encyclopedia (2009). Regal says that "as an intellectual endeavor, cryptozoology has been studied as much as cryptozoologists have sought hidden animals".
+
+In a 1992 issue of Folklore, folklorist Véronique Campion-Vincent says:
+
+Campion-Vincent says that "four currents can be distinguished in the study of mysterious animal appearances": "Forteans" ("compiler[s] of anomalies" such as via publications like the Fortean Times), "occultists" (which she describes as related to "Forteans"), "folklorists", and "cryptozoologists". Regarding cryptozoologists, Campion-Vincent says that "this movement seems to deserve the appellation of parascience, like parapsychology: the same corpus is reviewed; many scientists participate, but for those who have an official status of university professor or researcher, the participation is a private hobby".
+
+In her Encyclopedia of American Folklore, academic Linda Watts says that "folklore concerning unreal animals or beings, sometimes called monsters, is a popular field of inquiry" and describes cryptozoology as an example of "American narrative traditions" that "feature many monsters".
+
+In his analysis of cryptozoology, folklorist Peter Dendle says that "cryptozoology devotees consciously position themselves in defiance of mainstream science" and that:
+
+In a paper published in 2013, Dendle refers to cryptozoologists as "contemporary monster hunters" that "keep alive a sense of wonder in a world that has been very thoroughly charted, mapped, and tracked, and that is largely available for close scrutiny on Google Earth and satellite imaging" and that "on the whole the devotion of substantial resources for this pursuit betrays a lack of awareness of the basis for scholarly consensus (largely ignoring, for instance, evidence of evolutionary biology and the fossil record)."
+
+According to historian Mike Dash, few scientists doubt there are thousands of unknown animals, particularly invertebrates, awaiting discovery; however, cryptozoologists are largely uninterested in researching and cataloging newly discovered species of ants or beetles, instead focusing their efforts towards "more elusive" creatures that have often defied decades of work aimed at confirming their existence.
+
+Paleontologist George Gaylord Simpson (1984) lists cryptozoology among examples of human gullibility, along with creationism:
+
+Paleontologist Donald Prothero (2007) cites cryptozoology as an example of pseudoscience and categorizes it, along with Holocaust denial and UFO abductions claims, as aspects of American culture that are "clearly baloney".
+
+In Scientifical Americans: The Culture of Amateur Paranormal Researchers (2017), Hill surveys the field and discusses aspects of the subculture, noting internal attempts at creating more scientific approaches and the involvement of Young Earth creationists and a prevalence of hoaxes. She concludes that many cryptozoologists are "passionate and sincere in their belief that mystery animals exist. As such, they give deference to every report of a sighting, often without critical questioning. As with the ghost seekers, cryptozoologists are convinced that they will be the ones to solve the mystery and make history. With the lure of mystery and money undermining diligent and ethical research, the field of cryptozoology has serious credibility problems."
+
+Cryptobotany
+Cryptobotany is a sub-discipline of cryptozoology researching the possible existence of plant cryptids. According to British cryptozoologist Karl Shuker's 2003 book The Beasts That Hide From Man there are unconfirmed reports, primarily from Latin America, of still-undiscovered species of large carnivorous plants.
+
+Organizations 
+There have been several organizations, of varying types, dedicated or related to cryptozoology. These include:
+ International Fortean Organization – a network of professional Fortean researchers and writers based in the United States
+ International Society of Cryptozoology – an American organisation that existed from 1982 to 1998
+ Kosmopoisk – a Russian organisation whose interests include cryptozoology and Ufology
+ The Centre for Fortean Zoology- an English organization centered around hunting for unknown animals
+
+Museums and exhibitions 
+The zoological and cryptozoological collection and archive of Bernard Heuvelmans is held at the Musée Cantonal de Zoologie in Lausanne and consists of around "1,000 books, 25,000 files, 25,000 photographs, correspondence, and artifacts".
+
+In 2006, the Bates College Museum of Art held the "Cryptozoology: Out of Time Place Scale" exhibition, which compared cryptozoological creatures with recently extinct animals like the thylacine and extant taxa like the coelacanth, once thought long extinct (living fossils). The following year, the American Museum of Natural History put on a mixed exhibition of imaginary and extinct animals, including the elephant bird Aepyornis maximus and the great ape Gigantopithecus blacki, under the name "Mythic Creatures: Dragons, Unicorns and Mermaids".
+
+In 2003 cryptozoologist Loren Coleman opened the International Cryptozoology Museum in Portland, Maine. The museum houses more than 3000 cryptozoology related artifacts.
+
+See also
+
+ Ethnozoology
+ Fearsome critters, fabulous beasts that were said to inhabit the timberlands of North America
+ Folk belief
+ List of cryptids, a list of cryptids notable within cryptozoology
+ List of cryptozoologists, a list of notable cryptozoologists
+ Scientific skepticism
+
+References
+
+Sources
+
+ Bartholomew, Robert E. 2012. The Untold Story of Champ: A Social History of America's Loch Ness Monster. State University of New York Press. 
+ Campion-Vincent, Véronique. 1992. "Appearances of Beasts and Mystery-cats in France". Folklore 103.2 (1992): 160–183.
+ Card, Jeb J. 2016. "Steampunk Inquiry: A Comparative Vivisection of Discovery Pseudoscience" in Card, Jeb J. and Anderson, David S. Lost City, Found Pyramid: Understanding Alternative Archaeologies and Pseudoscientific Practices, pp. 24–25. University of Alabama Press. 
+ Church, Jill M. (2009). Cryptozoology. In H. James Birx. Encyclopedia of Time: Science, Philosophy, Theology & Culture, Volume 1. SAGE Publications. pp. 251–252. 
+ Dash, Mike. 2000. Borderlands: The Ultimate Exploration of the Unknown. Overlook Press. 
+ Dendle, Peter. 2006. "Cryptozoology in the Medieval and Modern Worlds". Folklore, Vol. 117, No. 2 (Aug., 2006), pp. 190–206. Taylor & Francis.
+ Dendle, Peter. 2013. "Monsters and the Twenty-First Century" in The Ashgate Research Companion to Monsters and the Monstrous. Ashgate Publishing. 
+ Hill, Sharon A. 2017. Scientifical Americans: The Culture of Amateur Paranormal Researchers. McFarland. 
+ Lack, Caleb W. and Jacques Rousseau. 2016. Critical Thinking, Science, and Pseudoscience: Why We Can't Trust Our Brains. Springer. 
+ Lee, Jeffrey A. 2000. The Scientific Endeavor: A Primer on Scientific Principles and Practice. Benjamin Cummings. 
+ Loxton, Daniel and Donald Prothero. 2013. Abominable Science: Origins of the Yeti, Nessie, and other Famous Cryptids. Columbia University Press. 
+ Mullis, Justin. 2019. "Cryptofiction! Science Fiction and the Rise of Cryptozoology" in Caterine, Darryl & John W. Morehead (ed.). 2019. The Paranormal and Popular Culture: A Postmodern Religious Landscape, pp. 240–252. Routledge. .
+ Mullis, Justin. 2021. "Thomas Jefferson: The First Cryptozoologist?". In Joseph P. Laycock & Natasha L. Mikles (eds). Religion, Culture, and the Monstrous: Of Gods and Monsters, pp. 185–197. Lexington Books. 
+ Nagel, Brian. 2009. Pseudoscience: A Critical Encyclopedia. ABC-CLIO.
+ Paxton, C.G.M. 2011. "Putting the 'ology' into cryptozoology." Biofortean Notes. Vol. 7, pp. 7–20, 310.
+ Prothero, Donald R. 2007. Evolution: What the Fossils Say and Why It Matters. Columbia University Press. 
+ Radford, Benjamin. 2014. "Bigfoot at 50: Evaluating a Half-Century of Bigfoot Evidence" in Farha, Bryan (ed.). Pseudoscience and Deception: The Smoke and Mirrors of Paranormal Claims. University Press of America.
+ Regal, Brian. 2011a. "Cryptozoology" in McCormick, Charlie T. and Kim Kennedy (ed.). Folklore: An Encyclopedia of Beliefs, Customs, Tales, Music, and Art, pp. 326–329. 2nd edition. ABC-CLIO. .
+ Regal, Brian. 2011b. Sasquatch: Crackpots, Eggheads, and Cryptozoology. Springer. .
+ Roesch, Ben S & John L. Moore. (2002). Cryptozoology. In Michael Shermer (ed.). The Skeptic Encyclopedia of Pseudoscience: Volume One. ABC-CLIO. pp. 71–78. 
+ Shea, Rachel Hartigan. 2013. "The Science Behind Bigfoot and Other Monsters".National Geographic, September 9, 2013. Online.
+ Shermer, Michael. 2003. "Show Me the Body" in Scientific American, issue 288 (5), p. 27. Online.
+ Simpson, George Gaylord (1984). "Mammals and Cryptozoology". Proceedings of the American Philosophical Society. Vol. 128, No. 1 (Mar. 30, 1984), pp. 1–19. American Philosophical Society.
+ Thomas, Paul. 2020. Storytelling the Bible at the Creation Museum, Ark Encounter, and Museum of the Bible. Bloomsbury Publishing. 
+ Uscinski, Joseph. 2020. Conspiracy Theories: A Primer. Rowman & Littlefield Publishers. 
+ Wall, J. E. 1983. The ISC Newsletter, vol. 2, issue 10, p. 10. International Society of Cryptozoology.
+ Ward, Daniel. 2011. "From the President". The American Biology Teacher, 73.8 (2011): 440–440.
+ Watts, Linda S. 2007. Encyclopedia of American Folklore. Facts on File.
+
+External links
+
+ 
+
+ 
+Forteana
+Pseudoscience
+Subcultures
+Young Earth creationism
+Zoology
+Craig Joseph Charles (born 11 July 1964) is an English actor, comedian, DJ, and television and radio presenter. He is best known for his roles as Dave Lister in the science fiction sitcom Red Dwarf and Lloyd Mullaney in the soap opera Coronation Street (2005–2015). He presented the gladiator-style game show Robot Wars from 1998 to 2004, and narrated the comedy endurance show Takeshi's Castle. As a DJ, he appears on BBC Radio 6 Music.
+
+Charles first appeared on television as a performance poet, which led to minor presenting roles. After finding fame in Red Dwarf, he regularly featured on national television with celebrity appearances on many popular shows while he continued to host a wide variety of programmes. From 2017 to 2022, Charles hosted The Gadget Show for Channel 5. His acting credits include playing inmate Eugene Buffy in the ITV drama The Governor, and leading roles in the British films Fated and Clubbing to Death. 
+
+Charles has hosted The Craig Charles Funk and Soul Show on BBC radio since 2002, and performs DJ sets at numerous clubs and festivals, nationally and internationally. In September 2015, he left Coronation Street after ten years of acting, to film new episodes of Red Dwarf and to continue his BBC Radio 6 Music and BBC Radio 2 broadcasting.
+
+Early life 
+Craig Joseph Charles was born in Liverpool on 11 July 1964, the son of a Guyanese father and Irish mother. He grew up on the Cantril Farm housing estate with his older brother, Dean (died 2014), and two other brothers, Jimmy and Emile. He attended West Derby Comprehensive School followed by Childwall Hall College of Further Education, studying A-levels in History, Government & Politics, English Literature, and General Studies. He won a national competition run by The Guardian newspaper for a poem he wrote when he was 12 years old. Upon leaving school, Charles spent time working in a studio at Central Hall on Renshaw Street in Liverpool.
+
+Early career 
+Charles began his career as a contemporary and urban performance poet on the British cabaret circuit. His performances were considered original, with Charles described as having a natural ironic wit which appealed to talent scouts. In 1981, Charles climbed on stage at a Teardrop Explodes concert and recited a humorous, but derogatory, poem about the band's singer, Julian Cope. He was invited to open subsequent gigs for the group and went on to perform as a support act in pubs and clubs for the following three years, and at events such as the Larks in the Park music festival at Sefton Park (1982). He performed poetry reading poems by Vladimir Mayakovsky, W. H. Auden, and E. E. Cummings, at Liverpool's Everyman Theatre (1983), with such poets as Roger McGough and Adrian Henri.
+
+Charles was involved in the Liverpool music scene, writing and singing lyrics for a number of local rock bands. In 1980, he played keyboards, bass and provided voice in the rock band Watt 4. He performed his political rap lyrics as a 'Wordsmith'. In 1983, Charles was invited to record a session on the John Peel BBC Radio show, performing his poems backed by a band. This was his first professional engagement. He recorded a further Peel Session in 1984.
+
+Charles realised he was using poetry as a vehicle for his sense of humour and progressed into stand-up comedy. He was part of the Red Wedge comedy tour in 1986, which aimed to raise awareness of the social problems of the time, in support of the Labour Party. He also performed his first one-man show in 1986, which premiered in Edinburgh, and then toured internationally. Charles was a guest on programmes including Janice Long's Radio 1 show, and he was a regular panellist on Ned Sherrin's chat show Loose Ends (1987–88) on BBC Radio 4.
+
+Television career
+
+Performance poetry 
+Charles first appeared on television as the resident poet on the arts programme Riverside on BBC2 and on the day-time BBC1 chat show Pebble Mill at One. Charles was the resident poet on the Channel 4 programme Black on Black (1985) and its entertainment-based successor Club Mix (1986), and he appeared, weekly, as a John Cooper Clarke-style 'punk poet' on the BBC2 pop music programme Oxford Road Show (ORS). Charles performed his political poems as stand-up comedy on the late-night show Saturday Live (1985–87) and on the prime-time BBC1 chat show Wogan (1986–87), where he performed a topical poem in a weekly feature. He also appeared as a guest on shows including Open Air (1988). Charles included significant acting in his performance style, enabling him to put the emotion across.
+In September 2015, Charles performed his "epic" poem Scary Fairy and the Tales of the Dark Wood live with the BBC Philharmonic orchestra, in a concert to be broadcast on BBC Radio 2's Friday Night is Music Night at Halloween.
+
+Red Dwarf 
+
+Charles' first television acting role was the Liverpudlian slob Dave Lister in science fiction comedy series Red Dwarf. He was introduced to the show by Saturday Live and Red Dwarf producer Paul Jackson, who wanted his opinion on whether the black character Cat was a racist stereotype. Charles, who like all of the eventual main cast had no acting experience, was eventually offered an audition after begging Jackson.
+
+Charles has appeared in all twelve series as well as Red Dwarf: The Promised Land. Charles' younger brother, Emile Charles, guest-starred in the Series III episode "Timeslides", and the songs "Bad News" and "Cash" in this episode were written by Charles and performed by his band. The role has involved Charles playing a variety of alternative characters, including a gangster, a cowboy and angelic and evil versions of Lister, and in him carrying out a wide range of stunts, and acting involving special effects. All series, except VII and IX, were recorded in front of a studio audience. Along with Danny John-Jules (Cat), Charles is one of only two cast members to appear in every episode of Red Dwarf to date.
+
+Charles reads the audiobook editions of both the Red Dwarf novel Last Human and his book The Log: A Dwarfer's Guide to Everything, and he regularly attends sci-fi, comedy and memorabilia conventions in connection with the Red Dwarf franchise. During Back to Earth, Lister visits the set of Coronation Street, where he meets the actor Craig Charles.
+
+Robot Wars 
+Charles presented Robot Wars on BBC2 (1998–2003) and Channel 5 (2003–04), from series 2 until series 7, which included two Extreme series and numerous 'specials'. Charles was the main host and presided over the arena in which teams of amateur engineers battled their home-made radio-controlled robots against each other, and against the house robots. Charles introduced the show, enthusiastically announced the results of the battles and spoke to the contestants after the main events. He ended each episode with a short Robot Wars-themed poem. Charles' son, Jack, appeared on the show on several occasions, and was a contestant on "Team Nemesis" during series 4. Charles also hosted the Robot Wars Live UK tour, in 2001 and shows performed at the Wembley Arena.
+
+Robot Wars returned to the BBC in 2016. Charles stated his interest in hosting it again, but the job went to Dara Ó Briain and Angela Scanlon.
+
+Takeshi's Castle 
+Charles provided the English voice-over commentary for the Challenge (2002–04) rebroadcast of the popular game show Takeshi's Castle, originally by Tokyo Broadcasting System in Japan. In each episode, between 100 and 142 contestants attempted to pass a series of wacky and near-impossible physical challenges to reach the Show Down at the castle against Japanese actor Takeshi Kitano for a chance to win large cash prizes. Charles co-wrote the programme and commentated throughout all 122 episodes of the four series, and also some special and "best of" episodes. He provided comedy insights into the contestants' abilities, which were designed to appeal to adult audiences, as well as younger viewers - and also coined the term "Keshi Heads" to describe fans of the show. A 2013 reboot narrated by Dick and Dom was not as well received.
+
+Coronation Street 
+In 2005, Charles joined the main cast of Coronation Street, playing a philandering taxicab driver, Lloyd Mullaney. Charles introduced aspects of the character himself, making Lloyd a Northern Soul DJ and record collector, and funk music enthusiast. Charles has chosen funk and soul songs playing as backing tracks during scenes, and posters for The Craig Charles Funk & Soul Club and Red Dwarf have appeared in the background.
+
+Charles portrayed Lloyd as tough, but kind hearted and romantic, and the character was popular with viewers. Charles added a comedy element to the role, but was also involved in traumatic and emotional scenes with intricate storylines. In 2010, his character was involved in the show's dramatic 50th anniversary tram crash storyline, which was broadcast live. Charles presented documentaries for the show, including 50 Years of Corrie Stunts (2010), which is included on the Tram Crash DVD. In November 2011, Charles took time off from Coronation Street to film a new series of Red Dwarf, returning in April 2012. In February 2014 an online mini-series, Steve & Lloyd's Streetcar Stories, ran alongside the television show's storyline.
+
+In May 2015, Craig announced he would be leaving Coronation Street for Red Dwarf, BBC Radio 2, and BBC Radio 6 Music. Lloyd left in a red Cadillac during the live episode on 23 September, although his final pre-recorded farewell scenes with Steve were shown during the following episode.
+
+Other acting roles 
+Charles has acted in episodes of popular dramas such as The Bill (1995), EastEnders (2002) and Holby City (2003) and in the comedy The 10 Percenters (1996). Charles played the emotionally disturbed and violent prisoner, Eugene Buffy, in the highly successful Lynda La Plante drama series The Governor (1996); the title role in the Channel 4 pirate sitcom Captain Butler (1997); the warden of a women's prison in the Canadian sci-fi fantasy Lexx (2001); Detective Chief Inspector Mercer in seven episodes of the BBC soap opera Doctors (2003); and soccer agent, Joel Brooks, in the Sky TV football soap Dream Team (2004).
+
+Other presenting roles 
+Charles has presented children's television programmes, including What's That Noise? (1989) and Parallel 9 (1992) on BBC1 and Go Getters (1994) on ITV. He was the travelling reporter for the highly acclaimed, but controversial, BBC 'mockumentary' Ghostwatch, which tricked viewers into believing it was a live investigation into ghost sightings in a suburban home on Halloween night (1992). Charles presented the virtual reality game show Cyberzone (1993) on BBC2; the late-night entertainment show Funky Bunker (1997) on ITV; the reality show Jailbreak (2000) on Channel 5; the discussion show Amazing Space: The Pub Guide to the Universe (2001) on National Geographic; and the late-night current affairs chat show Weapons of Mass Distraction (2004) on ITV.
+
+Other appearances 
+Charles has appeared on celebrity editions of University Challenge (1998), Can't Cook, Won't Cook (1998), The Weakest Link (2004), The Chase (2012) and Pointless (2013), and comedy panel shows such as Have I Got News for You (1995), Just a Minute (1995) and They Think It's All Over (1996) and Keith Lemon's Through the Keyhole (2014). He was a team captain on the sci-fi quiz series Space Cadets (1997) on Channel 4, which guest-starred William Shatner. Charles has opened the National Lottery draw (1997) and his home has featured on Through the Keyhole. Charles was a contestant in the Celebrity Poker Club tournament (2004) on Challenge, where he reached the semi-finals, and in the Channel 4 reality game show, The Games (2005), which documented the contestants' intensive training regime and each live Olympic Games-style sporting event.
+
+From 16 November 2014, Charles took part in the fourteenth series of I'm a Celebrity...Get Me Out of Here! However, on 20 November, Charles left the series soon after learning that his brother Dean had died after suffering a heart attack.
+
+Radio 
+As well as his early appearances on shows such as Radio 4's Loose Ends (1987–88) and Kaleidoscope in the early 1990s, Charles could be heard on the London Radio Station Kiss 100 (Kiss FM) as the Breakfast show presenter. In 1995, Charles played the Porter in Steven Berkoff's adaptation of Shakespeare's Macbeth, on Radio 4.
+
+Since 2002, Charles has been a DJ on BBC Radio 6 Music presenting The Craig Charles Funk and Soul Show, on air on Saturday evenings 6 pm to 9 pm, where he plays a diverse range of funk and soul music, from classic tracks to the latest releases, and provides publicity for less familiar bands. Charles explains the context for the music and carries out interviews with guest musicians. He was with the station at its launch, and while it was being tested during the previous year, under the name Network Y. Charles has also hosted the station's Breakfast Show (2004), and sits in for other presenters including Andrew Collins, Phil Wilding and Phill Jupitus, and Radcliffe & Maconie.
+
+From January until November 2014, Charles also broadcast The Funk and Soul Show live on BBC Radio 2, immediately after his 6 Music show. He regularly sits in for various presenters, and has presented numerous programmes on the station, including The Craig Charles Soul All-Nighter (2011), which he hosted continuously for 12 hours, and the Beatleland (2012) documentary on The Beatles. Charles has also chosen music as a guest of other broadcasters such as Ken Bruce on Radio 2 and Liz Kershaw on 6 Music.  Charles covered for Graham Norton on Radio 2's Saturday mid-morning show during Norton's 10-week 2015 summer break. From 16 April 2016 until 18 June 2022, Charles presented the House Party on Saturday nights on BBC Radio 2, with the show airing between 10 pm and midnight. For eight weeks from April–June 2020, he also presented Craig Charles At Teatime between 4 pm and 7 pm on weekdays on Radio 6 Music. The show was sometimes billed as Craig Charles Weekend Workout on Fridays.
+
+Since 18 October 2021, Charles has hosted the weekday afternoon show on BBC Radio 6 Music (1 pm – 4 pm). The shows include the "Trunk of Punk" and the "Jar of Ska".
+
+Music 
+Charles has been involved in the music industry through much of his career. His bands have included Watt 4 (1980), in which he played keyboards and sang; Craig Charles and the Beat Burglars (1989); The Sons of Gordon Gekko (1989), where he wrote lyrics and also composed tunes; and The Eye (2000–02), with whom he recorded the rock album Giving You the Eye, Live at the Edinburgh Festival. Charles plays guitar and piano.
+
+In 1987, Charles provided the poem track used for the opening credits of the BBC series The Marksman (in which he also acted), which is included on the album "The Marksman: Music from the BBC TV Series". Charles wrote lyrics for Suzanne Rhatigan's album To Hell with Love (1992). In 1993, Charles was signed to the Acid Jazz record label.
+
+In 2009, Charles formed the Fantasy Funk Band from the leading British musicians in the genre, and has presented the band at festivals, including Glastonbury and the BBC's Proms in the Park. As a continuation of his 6 Music show, Charles regularly takes the Craig Charles Funk & Soul Club to varied venues across the UK and abroad, and to the major UK music festivals. He performs live DJ sets, occasionally comperes and curates events, including his own Craig Charles Fantasy Weekender, and has broadcast the radio show live from festival locations.
+
+In 2012, Charles released the compilation album The Craig Charles Funk & Soul Club, on CD and as a digital download, as part of a three-album deal with Freestyle Records. The second volume was released in the same format in 2013, and the third in 2014. He followed these with a Craig Charles Funk and Soul Classics album of three CDs in 2015.
+
+Stand-up comedy and theatre 
+Charles returned to stand-up comedy between 1995  and 2001, regularly touring his one-man adult-rated shows nationally and releasing the videos Craig Charles: Live on Earth! (1995), Live Official Bootleg (1996) and Sickbag (2000). International performances included the Great Norwegian Comedy Festival and the Melbourne International Comedy Festival.
+
+Charles appeared in the John Godber comedy play Teechers, in which he swapped in and out of various roles, at the Arts Theatre, London, and at the Edinburgh Festival (1989), and he played Idle Jack in the pantomime Dick Whittington, at the Hull New Theatre (1997). In 2000, he performed the show Craig Charles and His Band at the Edinburgh Festival.
+
+Charles has a regular slot at Butlins Minehead House Of Fun Weekend every third November for three nights, of DJing, Comedy, Twanging and singing.
+
+Film roles 
+Charles played Eddie in the 1987 political drama Business as Usual. In 2006, Charles starred in two British feature films: the fantasy film Fated and the gangster film Clubbing to Death. Charles voiced Zipper the Cat in the animation Prince Cinders (1993) and Asterix in Asterix Conquers America (1994). Roles in short films include playing Keith Dennis in the comedy The Colour of Funny (1999) and Mark in the drama Ten Minutes (2004).
+
+Writing 
+In 1993, Charles worked with Russell Bell on the Craig Charles Almanac of Total Knowledge, writing about his 'streetwise' sense of humour on a range of topics, from the world's most embarrassing stories to how to explain the mysteries of the universe. In 1997, Charles and Bell wrote Charles' Red Dwarf character's book The Log, in which Lister decides to leave a log detailing mankind's greatest achievements. In 1998, Charles published No Other Blue, a collection of his poetry, with illustrations by Philippa Drakeford, on diverse personal subjects including prison, his mother's final illness, love and politics at home and abroad. More recently he has written a series of nursery rhymes titled "Scary Fairy and the Tales of the Dark Wood".
+
+In 2000, Charles wrote his first autobiography about his experiences growing up in Liverpool, titled No Irish, No Niggers. In 2007, he announced he would release his autobiography, planned for March 2008, published by Hodder Headline and titled On the Rocks, which would cover the recent incidents in his life and be based on much of his journal, which Charles said he kept while in rehab.
+
+Charles has been involved in journalism and has had a column in Time Out magazine. In 1994, he launched a single issue of Comedy magazine with articles dedicated to the comedy circuit. In 2005 and 2006, Charles was a monthly columnist for the Liverpool Echo newspaper. His television writing credits include The Easter Stories (1994), Funky Bunker (1997) and Takeshi's Castle (2002). He is also involved in music journalism as he wrote liner notes for the funk and soul music producer Mr. Confuse for his albums Feel The Fire (2008), Do You Realize (2012) and Only A Man (2018) regarding his work as a music presenter for The Craig Charles Funk and Soul Show on BBC Radio 6 Music.
+
+Personal life 
+Charles resides in Altrincham, Greater Manchester. He has three children: a son named Jack from his first marriage to actress Cathy Tyson, and two daughters named Anna-Jo and Nellie from his second marriage to Jackie Fleming.
+
+In July 1994, Charles and another man were charged with rape and four counts of indecent assault, following allegations by an associate and ex-girlfriend of Charles. Charles was remanded in custody for three and a half months before being granted bail, during which time he was assaulted by a man wielding a makeshift knife. In March 1995, Charles and his co-accused were acquitted of all charges at trial. After being cleared, Charles spoke of the need to restore anonymity for those accused of rape. He stated, "The fact that my name and address along with my picture can appear on the front of the papers before the so-called 'victim' has even signed a statement proves that anonymity for rape defendants is a must and that the law must be changed."
+
+Charles has battled drug addiction — he described himself in 2015 as "quite an addictive person", trying to find healthier addictions, of which work was one. In June 2006, newspaper allegations of crack cocaine use resulted in Charles being suspended from both Coronation Street and BBC Radio 6 Music. In August, Charles was arrested and released on bail pending further enquiries, and in September he accepted a caution for possession of a Class A drug. Charles returned to hosting his 6 Music show from November 2006 and filming Coronation Street from January 2007. In a 2015 interview, Charles spoke of his need to remain "vigilant" in abstaining from drugs. In 2020 he said that the newspaper reports were the best thing that could have happened to him, leading him to join Narcotics Anonymous and straighten out his personal life.
+
+Credits
+
+Filmography
+
+Radio
+
+Bibliography
+
+Published
+ 1993, Craig Charles Almanac of Total Knowledge, (with Russell Bell), Penguin Books
+ 1997, The Log: A Dwarfer's Guide to Everything, (with Russell Bell), Penguin Books
+ 1998, No Other Blue, (illustrations by Philippa Drakeford), Penguin Books
+
+Unpublished
+ 2000, No Irish, No Niggers, Penguin Books 
+ 2008, On the Rocks, Hodder Headline
+
+References
+
+External links 
+
+ 
+ Craig Charles (BBC Radio 6 Music)
+ The Craig Charles Funk and Soul Show (BBC Radio 6 Music)
+ Craig Charles BFI site
+  Craig Charles Online Website
+  Marie Birch's Unofficial Craig Charles Website
+
+1964 births
+English people of Guyanese descent
+English people of Irish descent
+English radio DJs
+English male poets
+English male radio actors
+English male soap opera actors
+English television presenters
+Male actors from Liverpool
+Comedians from Liverpool
+BBC Radio 2 presenters
+BBC Radio 6 Music presenters
+Black British male actors
+Black British male comedians
+Robot Wars (TV series) presenters
+People acquitted of rape
+People from Knowsley, Merseyside
+Entertainers from Liverpool
+False allegations of sex crimes
+Living people
+20th-century English comedians
+21st-century English comedians
+British male comedy actors
+English spoken word artists
+20th-century English poets
+20th-century English male writers
+County Mayo (; ) is a county in Ireland. In the West of Ireland, in the province of Connacht, it is named after the village of Mayo, now generally known as Mayo Abbey. Mayo County Council is the local authority. The population was 137,231 at the 2022 census. The boundaries of the county, which was formed in 1585, reflect the Mac William Íochtar lordship at that time.
+
+Geography
+
+It is bounded on the north and west by the Atlantic Ocean; on the south by County Galway; on the east by County Roscommon; and on the northeast by County Sligo. Mayo is the third-largest of Ireland's 32 counties in area and 18th largest in terms of population. It is the second-largest of Connacht's five counties in both size and population. Mayo has  of coastline, or approximately 21% of the total coastline of the State. It is one of three counties which claims to have the longest coastline in Ireland, alongside Cork and Donegal. There is a distinct geological difference between the west and the east of the county. The west consists largely of poor subsoils and is covered with large areas of extensive Atlantic blanket bog, whereas the east is largely a limestone landscape. Agricultural land is therefore more productive in the east than in the west.
+
+The highest point in Mayo (and Connacht) is Mweelrea, at 
+The River Moy in the northeast of the county is renowned for its salmon fishing
+Ireland's largest island, Achill Island, lies off Mayo's west coast
+Mayo has Ireland's highest cliffs at Croaghaun, Achill Island, while the Benwee Head cliffs in Kilcommon Erris drop almost perpendicularly  into the Atlantic Ocean.
+The northwest areas of County Mayo have some of the best renewable energy resources in Europe, if not the world, in terms of wind resources, ocean wave, tidal and hydroelectric resources
+
+There are nine historic baronies, four in the northern area and five in the south of the county:
+
+North Mayo
+Erris (north-west, containing Belmullet, Gweesalia, Bangor Erris, Kilcommon, Ballycroy etc.)
+Burrishoole (west, containing Achill, Mulranny and Newport, County Mayo)
+Gallen (east, containing Bonniconlon, Foxford)
+Tyrawley (north-east, containing Ballina, Ballycastle, Killala, Moygownagh)
+
+South Mayo
+Clanmorris, (south-east, containing Claremorris and Balla)
+Costello (east-south-east, containing Kilkelly Ballyhaunis) etc.
+Murrisk (south-west, containing Westport, Louisburgh, Croagh Patrick etc.)
+Kilmaine (south, containing Ballinrobe, Cong etc.)
+Carra (south, containing Castlebar, Partry etc.)
+
+Largest towns by population
+
+According to the 2022 census:
+Castlebar 13,054
+Ballina 10,556
+Westport 6,872
+Claremorris 3,857
+Ballinrobe 3,148
+Ballyhaunis 2,773
+Swinford 1,459
+Foxford 1,452
+Kiltimagh 1,232
+Crossmolina 1,134
+
+Flora and fauna
+A survey of the terrestrial and freshwater algae of Clare Island was made between 1990 and 2005 and published in 2007. A record of Gunnera tinctoria is also noted.
+
+Consultants working for the Corrib gas project have carried out extensive surveys of wildlife flora and fauna in Kilcommon Parish, Erris between 2002 and 2009. This information is published in the Corrib Gas Proposal Environmental impact statements 2009 and 2010.
+
+History
+
+Prehistory
+
+There is evidence of human occupation of what is now County Mayo going far back into prehistory. At Belderrig on the north Mayo coast, there is evidence for Mesolithic (Middle Stone Age) communities around 4500 BC. while throughout the county there is a wealth of archaeological remains from the Neolithic (New Stone Age) period (ca. 4,000 BC to 2,500 BC), particularly in terms of megalithic tombs and ritual stone circles.
+
+The first people who came to Ireland – mainly to coastal areas as the interior was heavily forested – arrived during the Middle Stone Age, as far back as eleven thousand years ago. Artefacts of hunter/gatherers are sometimes found in middens, rubbish pits around hearths where people would have rested and cooked over large open fires. Once cliffs erode, midden remains become exposed as blackened areas containing charred stones, bones, and shells. They are usually found a metre below the surface. Mesolithic people did not have major rituals associated with burial, unlike those of the Neolithic (New Stone Age) period.
+The Neolithic period followed the Mesolithic around 6,000 years ago. People began to farm the land, domesticate animals for food and milk, and settle in one place for longer periods. These people had skills such as making pottery, building houses from wood, weaving, and knapping (stone tool working). The first farmers cleared forestry to graze livestock and grow crops. In North Mayo, where the ground cover was fragile, thin soils washed away and blanket bog covered the land farmed by the Neolithic people.
+
+Extensive pre-bog field systems have been discovered under the blanket bog, particularly along the North Mayo coastline in Erris and north Tyrawley at sites such as the Céide Fields, centred on the northeast coast.
+
+The Neolithic people developed rituals associated with burying their dead; this is why they built huge, elaborate, galleried stone tombs for their dead leaders, known nowadays as megalithic tombs. There are over 160 recorded megaliths in County Mayo, such as Faulagh.
+
+Megalithic tombs
+There are four distinct types of Irish megalithic tombs—court tombs, portal tombs, passage tombs and wedge tombs—examples of all of which can be found in County Mayo. Areas particularly rich in megalithic tombs include Achill, Kilcommon, Ballyhaunis, Moygownagh, Killala and the Behy/Glenurla area around the Céide Fields.
+
+Bronze Age (ca. 2,500 BC to 500 BC)
+Megalithic tomb building continued into the Bronze Age when metal began to be used for tools alongside the stone tools. The Bronze Age lasted approximately from 4,500 years ago to 2,500 years ago (2,500 BC to 500 BC). Archaeological remains from this period include stone alignments, stone circles and fulachta fiadh (early cooking sites). They continued to bury their chieftains in megalithic tombs which changed design during this period, more being of the wedge tomb type and cist burials.
+
+Iron Age (ca. 500 BC to AD 325)
+Around 2,500 years ago the Iron Age took over from the Bronze Age as more and more metalworking took place. This is thought to have coincided with the arrival of Celtic speaking peoples and the introduction of the ancestor of the Irish language. Towards the end of this period, the Roman Empire was at its height in Britain but it is not thought that the Roman Empire extended into Ireland. Remains from this period, which lasted until the Early Christian period began about AD 325 (with the arrival of Saint Patrick into Ireland, as a slave) include crannógs (Lake dwellings), promontory forts, ringforts and souterrains of which there are numerous examples across the county. The Iron Age was a time of tribal warfare and kingships, each fighting neighbouring kings, vying for control of territories and taking slaves. Territories were marked by tall stone markers, Ogham stones, using the first written down words using the Ogham alphabet. The Iron Age is the time period in which the mythological tales of the Ulster Cycle and sagas took place, as well as that of the Táin Bó Flidhais, whose narrative is set in mainly in Erris.
+
+Early Christian period (ca. AD 325 to AD 800)
+
+Christianity came to Ireland around the start of the 5th century. It brought many changes including the introduction of the Latin alphabet. The tribal 'tuatha' and new Christian religious settlements existed side by side. Sometimes it suited the chieftains to become part of the early Churches, other times they remained as separate entities. St. Patrick (4th century) may have spent time in County Mayo and it is believed that he spent forty days and forty nights on Croagh Patrick praying for the people of Ireland. From the middle of the 6th-century hundreds of small monastic settlements were established around the county. Some examples of well-known early monastic sites in Mayo include Mayo Abbey, Aughagower, Ballintubber, Errew Abbey, Cong Abbey, Killala, Turlough on the outskirts of Castlebar, and island settlements off the Mullet Peninsula like the Inishkea Islands, Inishglora and Duvillaun.
+
+In 795 the first of the Viking raids took place. The Vikings came from Scandinavia to raid the monasteries as they were places of wealth with precious metal working taking place in them. Some of the larger ecclesiastical settlements erected round towers to prevent their precious items from being plundered and also to show their status and strength against these pagan raiders from the north. There are round towers at Aughagower, Balla, Killala, Turlough and Meelick. The Vikings established settlements that later developed into towns (Dublin, Cork, Wexford, Waterford etc.) but none were in County Mayo. Between the reigns of Kings of Connacht Cathal mac Conchobar mac Taidg (973–1010) and Tairrdelbach Ua Conchobair (1106–1156), various tribal territories were incorporated into the kingdom of Connacht and ruled by the Siol Muirdaig dynasty, based initially at Rathcroghan in County Roscommon, and from  1050 at Tuam. The families of O'Malley and O'Dowd of Mayo served as admirals of the fleet of Connacht, while families such as O'Lachtnan, Mac Fhirbhisigh, and O'Cleary were ecclesiastical and bardic clans.
+
+Anglo-Normans (12th to 16th centuries)
+In AD 1169 when one of the warring kings in the east of Ireland, Dermot MacMurrough, appealed to the King of England for help in his fight with a neighbouring king, the response resulted in the Anglo-Norman colonisation of Ireland.
+County Mayo came under Norman control in AD 1235. Norman control meant the eclipse of many Gaelic lords and chieftains, chiefly the O'Connors of Connacht. During the 1230s, the Anglo-Normans and Welsh under Richard Mór de Burgh (c. 1194 – 1242) invaded and settled in the county, introducing new families such as Burke, Gibbons, Staunton, Prendergast, Morris, Joyce, Walsh, Barrett, Lynott, Costello, Padden and Price, Norman names are still common in County Mayo. Following the collapse of the lordship in the 1330s, all these families became estranged from the Anglo-Irish administration based in Dublin and assimilated with the Gaelic-Irish, adopting their language, religion, dress, laws, customs and culture and marrying into Irish families. They became "more Irish than the Irish themselves".
+
+The most powerful clan to emerge during this era were the Mac William Burkes, also known as the Mac William Iochtar (see Burke Civil War 1333–1338), descended from Sir William Liath de Burgh, who defeated the Gaelic-Irish at the Second Battle of Athenry in August 1316. They were frequently at war with their cousins, Clanricarde of Galway, and in alliance with or against various factions of the O'Conor's of Siol Muiredaig and O'Kelly's of Uí Maine. The O'Donnell's of Tyrconnell regularly invaded in an attempt to secure their right to rule.
+
+The Anglo-Normans encouraged and established many religious orders from continental Europe to settle in Ireland. Mendicant orders—Augustinians, Carmelites, Dominicans and Franciscans began new settlements across Ireland and built large churches, many under the patronage of prominent Gaelic families. Some of these sites include Cong, Strade, Ballintubber, Errew Abbey, Burrishoole Abbey and Mayo Abbey. During the 15th and 16th centuries, despite regular conflicts between them as England chopped and changed between religious beliefs, the Irish usually regarded the King of England as their King. When Elizabeth I came to the throne in the mid-16th century, the English people, as was customary at that time, followed the religious practices of the reigning monarch and became Protestant. Many Irish people such as Grace O'Malley, the famous pirate queen, had close relationships with the English monarchy, and the English kings and queens were welcome visitors to Irish shores. The Irish however, generally held onto their Catholic religious practices and beliefs. The early plantations of settlers in Ireland began during the reign of Queen Mary in the mid-16th century and continued throughout the long reign of Queen Elizabeth I until 1603. By then the term County Mayo had come into use. In the summer of 1588, the galleons of the Spanish Armada were wrecked by storms along the west coast of Ireland. Some of the hapless Spaniards came ashore in Mayo, only to be robbed and imprisoned, and in many cases slaughtered.
+
+Almost all the religious foundations set up by the Anglo-Normans were suppressed in the wake of the Reformation in the 16th century.
+
+Protestant settlers from Scotland, England, and elsewhere in Ireland, settled in the County in the early 17th century. Many would be killed or forced to flee because of the 1641 Rebellion, during which a number of massacres were committed by the Catholic Gaelic Irish, most notably at Shrule in 1642. A third of the overall population was reported to have perished due to warfare, famine and plague between 1641 and 1653, with several areas remaining disturbed and frequented by Reparees into the 1670s.
+
+17th and 18th centuries
+
+Pirate Queen Grace O'Malley is probably the best-known person from County Mayo between the mid-16th century and the turn of the 17th century. In the 1640s, when Oliver Cromwell overthrew the English monarchy and set up a parliamentarian government, Ireland suffered severely. With a stern regime in absolute control needing to pay its armies and allies, the need to pay them with grants of land in Ireland led to the 'to hell or to Connaught' policies. Displaced native Irish families from other (eastern and southern mostly) parts of the country were either forced to leave the country or were awarded grants of land 'west of the Shannon' and put off their own lands in the east. The land in the west was divided and sub-divided between more and more people as huge estates were granted on the best land in the east to those who best pleased the English. Mayo does not seem to have been affected much during the Williamite War in Ireland, though many natives were outlawed and exiled.
+
+For the vast majority of people in County Mayo the 18th century was a period of unrelieved misery. Because of the penal laws, Catholics had no hope of social advancement while they remained in their native land. Some, like William Brown (1777–1857), left Foxford with his family at the age of nine and thirty years later was an admiral in the fledgeling Argentine Navy. Today he is a national hero in that country.
+
+The general unrest in Ireland was felt just as keenly across Mayo, and as the 19th century approached and news reached Ireland about the American War of Independence and the French Revolution, the downtrodden Irish, constantly suppressed by Government policies and decisions from Dublin and London, began to rally themselves for their own stand against British rule in their country. 1798 saw Mayo become a central part of the United Irishmen Rebellion when General Humbert from France landed in Killala with over 1,000 soldiers playing to support the main uprising.  They marched across the county towards the administrative centre of Castlebar, leading to the Battle of Castlebar. Taking the garrison by surprise Humbert's army was victorious. He established a ' Republic of Connacht' with John Moore of the Moore family from Moore Hall near Partry as its head. Humbert's army marched on towards Sligo, Leitrim and Longford where they were suddenly faced with a massive British army and were forced to surrender in less than half an hour. The French soldiers were treated honourably, but for the Irish the surrender meant slaughter. Many died on the scaffold in towns like Castlebar and Claremorris, where the high sheriff for County Mayo, the Honourable Denis Browne, M.P., brother of Lord Altamont, wreaked a terrible vengeance – thus earning for himself the nickname which has survived in folk memory to the present day, 'Donnchadh an Rópa' (Denis of the Rope).
+
+In the 18th century and early 19th century, sectarian tensions arose as evangelical Protestant missionaries sought to 'redeem the Irish poor from the errors of Popery'. One of the best known was the Rev. Edward Nangle's mission at Dugort in Achill. These too were the years of the campaign for Catholic Emancipation and, later, for the abolition of the tithes, which a predominately Catholic population was forced to pay for the upkeep of the clergy of the Established (Protestant) Church.
+
+19th and 20th centuries
+
+During the early years of the 19th century, famine was a common occurrence, particularly where population pressure was a problem. The population of Ireland grew to over eight million people prior to the Irish Famine (or Great Famine) of 1845–47. The Irish people depended on the potato crop for their sustenance. Disaster struck in August 1845, when a killer fungus (later diagnosed as Phytophthora infestans) started to destroy the potato crop. When widespread famine struck, about a million people died and a further million left the country. People died in the fields of starvation and disease. The catastrophe was particularly bad in County Mayo, where nearly ninety per cent of the population depended on the potato as their staple food. By 1848, Mayo was a county of total misery and despair, with any attempts at alleviating measures in complete disarray.
+
+There are numerous reminders of the Great Famine to be seen on the Mayo landscape: workhouse sites, famine graves, sites of soup kitchens, deserted homes and villages and even traces of undug 'lazy-beds' in fields on the sides of hills. Many roads and lanes were built as famine relief measures. There were nine workhouses in the county: Ballina, Ballinrobe, Belmullet, Castlebar, Claremorris, Killala, Newport, Swinford and Westport.
+
+A small poverty-stricken place called Knock, County Mayo, made headlines when it was announced that an apparition of the Blessed Virgin Mary, St. Joseph and St. John had taken place there on 21 August 1879, witnessed by fifteen local people.
+
+A national movement was initiated in County Mayo during 1879 by Michael Davitt, James Daly, and others, which brought about a major social change in Ireland. Michael Davitt, a labourer whose family had moved to England joined forces with Charles Stewart Parnell to win back the land for the people from the landlords and stop evictions for non-payment of rents. The organisation became known as the Irish National Land League, and its struggle to win rights for poor farmers in Ireland was known as the Land War.
+
+It was in this era of agrarian unrest that a new verb was introduced to the English language by Mayo - "to boycott". Charles Boycott was an English landlord deeply unpopular with his tenants. When Charles Steward Parnell made a speech in Ennis, County Clare, urging nonviolent resistance against landlords, his tactics were enthusiastically taken in Mayo against Boycott. The entire Catholic community around Lough Mask in South Mayo where Boycott had his estate became a campaign of total social ostracisation against Boycott, a tactic that would one day come to bear his name. The campaign against Boycott became a  in the British press after he wrote a letter to The Times. The British elite rallied to his cause and Fifty Orangemen from County Cavan and County Monaghan travelled to his estate to harvest the crops, while a regiment of the 19th Royal Hussars and more than 1,000 men of the Royal Irish Constabulary were deployed to protect the harvesters. However, the cost of doing this was completely uneconomic: It cost the British government somewhere in the region of £10,000 to simply harvest £500 worth of crops. Boycott sold off the estate and the British government's resolve to try to break boycotts in this completely dissolved, resulting in victory for the tenants.
+
+The "Land Question" was gradually resolved by a scheme of state-aided land purchase schemes. The tenants became the owners of their lands under the newly set-up Land Commission.
+
+A Mayo nun, Mother Agnes Morrogh-Bernard, set up the Foxford Woollen Mill in 1892. She made Foxford synonymous throughout the world with high-quality tweeds, rugs and blankets.
+
+Mayo, as all parts of what became the Irish Free State, was affected by the events of the Irish revolutionary period, including the Irish War of Independence and the subsequent Irish Civil War. Major John MacBride of Westport was amongst those who took part in the 1916 Easter Rising and was subsequently executed by the British for his participation. His death served as a rallying call for Republicans in Mayo and led to Mayo men such as P. J. Ruttledge, Ernie O'Malley, Michael Kilroy and Thomas Derrig to rise up during the War of Independence. In the ensuing Civil War, many of these leading figures chose the Anti-treaty side and fought in bitter battles such as those in Ballina, which changed hands between pro and anti-treaty forces a number of times.
+
+In the aftermath of the Civil War, there was a consolidation of many of those with anti-treaty feelings into the new political party Fianna Fáil. PJ Ruttledge and Thomas Derrig would become founding members of the party and served in Éamon de Valera's first-ever Fianna Fáil government as ministers. Mayo politicians would continue to contribute to the national political scene over the decades. In 1990 Mary Robinson, from County Mayo, became the first-ever female President of Ireland, and is widely credited with revitalising the position with importance and focus it had never possessed before. During her tenure she unveiled Ireland's National Famine Memorial which is situated in the village of Murrisk, County Mayo.
+
+In 2011 Enda Kenny became the first politician from a Mayo constituency and the second Mayo native to serve as Taoiseach, the head of government of Ireland. Kenny went on to become the longest-serving Fine Gael Taoiseach in Irish history.
+
+Clans and families
+
+In the early historic period, what is now County Mayo consisted of a number of large kingdoms, minor lordships and tribes of obscure origins. They included:
+
+ Calraige            – pre-historic tribe found in the parishes of Attymass, Kilgarvan, Crossmolina and the River Moy
+ Ciarraige           – settlers from Munster found in south-east Mayo around Kiltimagh and west County Roscommon
+ Conmaicne – a people located in the barony of Kilmaine, alleged descendants of Fergus mac Róich
+ Fir Domnann         – branch of the Laigin, originally from Britain, located in Erris
+ Gamanraige          – pre-historic kings of Connacht, famous for battle with Medb & Ailill of Cruachan in Táin Bó Flidhais. Based in Erris, Carrowmore Lake, Killala Bay, Lough Conn
+ Gailenga            – kingdom extending east from Castlebar to adjoining parts of Mayo
+ Uí Fiachrach Muidhe – a sept of the Connachta, based around Ballina, some of whom were kings of Connacht
+ Partraige           – a pre-Gaelic people of Lough Mask and Lough Carra, namesakes of Partry
+ Umaill              – kingdom surrounding Clew Bay, east towards Castlebar, its rulers adopted the surname O'Malley
+
+Politics
+
+Local government and political subdivisions
+
+Mayo County Council is the authority responsible for local government. As a county council, it is governed by the Local Government Act 2001. The county is divided into four municipal districts of Ballina, Castlebar, Claremorris and Westport–Belmullet, each with a population of roughly 32,000 to 34,000 people. The council is responsible for housing and community, roads and transportation, urban planning and development, amenity and culture, and environment.
+
+County Mayo is divided into six local electoral areas (LEAs). Councillors are elected for a five-year term.
+
+The county town is at Áras an Contae in Castlebar, the main population centre located in the centre of the county.
+
+National politics
+
+Since 2016, Mayo has been represented on a national political level by four TDs who represent the constituency of Mayo in Dáil Eireann. Previous to 2016 the constituency had five TDs but this was reduced based on the county's current population in line with proportional representation. The electoral divisions of Cong, Dalgan, Houndswood, Kilmaine, Neale, Shrule, in the former Rural District of Ballinrobe, are in Galway West.
+
+Voting patterns and political history
+ 
+Historically, Mayo has tended to vote Fianna Fáil, as Fianna Fáil managed to position themselves in the 20th century as the party best fit to represent farmers with small holdings, who were plentiful in Mayo. With so many of Mayo's electorate being small farmers, the county became a base for the emergence of Clann na Talmhan, an agrarian party in the 1940s and 1950s. Clann an Talmhan's second leader, Joseph Blowick came from South Mayo and that is where his seat was. The party was not able to last in the long run though as it was unable to hold together its voting bloc of both small farmers in the west of Ireland and large farmers in the east.
+
+Towards the start of the 21st century, the balance of power in Mayo began to shift towards Fine Gael, thanks in part to the emergence of Enda Kenny and Michael Ring. Kenny, who became Taoiseach in 2011, led Fine Gael to a historic victory in the 2011 Irish general election which included securing four out of five available seats for his party in Mayo.
+
+In 2020, Rose Conway-Walsh came within 200 votes of topping the poll and became the first Sinn Féin TD for Mayo since 1927, riding a nationwide surge for Sinn Féin that year.
+
+Despite being historically the third-largest party in Ireland, Labour has struggled to ever make inroads into Mayo. The party has only ever had one TD for Mayo, former party leader Thomas J. O'Connell, who represented South Mayo between 1927 and 1932. While Labour has not proven itself electorally successful in Mayo, Mayo has provided important members to the Labour Party. Mary Robinson from Ballina became the first-ever female President of Ireland as a Labour candidate while Pat Rabbitte, originally from Claremorris, served as leader of the Labour Party from 2002 to 2007. Serving alongside Rabbitte was Emmet Stagg, one of the longest-standing Labour TDs of the modern era, himself from Hollymount not far from Claremorris.
+
+Demographics
+
+The county has experienced perhaps the highest emigration out of Ireland. In the 1840s–1880s, waves of emigrants left the rural townlands of the county. Initially triggered by the Great Famine and then in search of work in the newly industrialising United Kingdom and the United States, the population plummeted from 388,887 in 1841 to 199,166 in 1901. It reached a low of 109,525 in 1971. Emigration slowed dramatically as the Irish economy began to expand in the 1990s and early 2000s, and the population of Mayo increased from 110,713 in 1991 to 130,638 in 2011.
+
+Religion
+
+In the 2006 National Census, the religious demographic breakdown for County Mayo was 114,215 Roman Catholics, 2,476 Church of Ireland, 733 Muslims, 409 other Christians, 280 Presbyterians, 250 Orthodox Christians, 204 Methodists, 853 other stated religions, 3,267 no religion and 1,152 no stated religion.
+
+Irish language
+
+9% of the population of County Mayo live in the Gaeltacht. The Gaeltacht Irish-speaking region in County Mayo is the third-largest in Ireland with 10,886 inhabitants. Tourmakeady is the largest village in this area. All schools in the area use Irish as the language of instruction. Mayo has four gaelscoileanna in its four major towns, providing primary education to students through Irish.
+
+Transport
+
+Rail
+Westport railway station is the terminus station on the Dublin to Westport Rail service. Railway stations are also located at Ballyhaunis, Claremorris, Castlebar, Manulla, Ballina and Foxford. All railway stations are located on the same railway line, with the exception of Ballina and Foxford which requires passengers to change at Manulla Junction. There are currently four services each way every day on the line.
+
+There are also proposals to reopen the currently disused Western Railway Corridor connecting Limerick with Sligo.
+
+Road
+There are a number of national primary roads in the county including the N5 road connecting Westport with Dublin, the N17 road connecting the county with Galway and Sligo and the N26 road connecting Ballina with Dublin via the N5. There are a number of national secondary roads in the county also including the N58 road, N59 road, N60 road, N83 road & N84 road. As of 2021, a new road running from northwest of Westport to east of Castlebar is under construction. The road is a dual carriageway with junctions at the N59, N84 and N60 and will open in late 2022.
+
+Air
+Ireland West Airport Knock is an international airport located in the county. The name is derived from the nearby village of Knock. Recent years have seen the airport's passenger numbers grow to over 650,000 yearly with a number of UK and European destinations. August 2014 saw the airport have its busiest month on record with 102,774 passengers using the airport.
+
+Places of interest
+
+ Achill Island
+ Ashford Castle
+ Ballintubber Abbey
+ Blacksod Lighthouse
+ Broadhaven Bay
+ Burrishoole Abbey
+ Céide Fields
+ Clare Island
+ Clew Bay
+ Cong Abbey
+ Croagh Patrick
+ Eagle Island lighthouse
+ Erris
+ Faulagh
+ Granuaile's Castle, Clare Island
+ Great Western Greenway
+ Ireland West Airport, Knock
+ Joyce Country
+ Killala Bay
+ Knock Shrine
+ List of designated Scenic Roads in County Mayo 
+ Lough Mask
+ Mayo Peace Park
+ Moore Hall
+ Moygownagh
+ Mullet Peninsula
+ Murrisk Abbey
+ Murrisk Millennium Peace Park
+ National Museum of Ireland – Country Life
+ National Famine Memorial
+ Nephin
+ Partry Mountains
+ Rockfleet Castle
+ Sruwaddacon Bay
+ Tourmakeady
+ Uggool Beach
+ Westport House
+ Wild Nephin National Park
+
+Media
+
+Newspapers in County Mayo include The Mayo News, the Connaught Telegraph, the Connacht Tribune, Western People, and Mayo Advertiser, which is Mayo's only free newspaper.
+
+Mayo Now is a monthly entertainment and culture magazine for the towns of Ballina, Foxford, Killala, Crossmolina and surrounding areas  – this is out on the first Friday of each month.
+
+Mayo has its own online TV channel Mayo TV which was launched in 2011. It covers news and events from around the county and regularly broadcasts live to a worldwide audience. Local radio stations include Erris FM, Community Radio Castlebar, Westport Community Radio, BCR FM (Ballina Community Radio) and M.W.R. (Mid West Radio).
+
+The documentary Pipe Down, which won best feature documentary at the 2009 Waterford Film Festival, was made in Mayo.
+
+Energy
+
+Energy controversy
+
+There is local resistance to Shell's decision to process raw gas from the Corrib gas field at an onshore terminal. In 2005, five local men were jailed for contempt of court after refusing to follow an Irish court order. Subsequent protests against the project led to the Shell to Sea and related campaigns.
+
+Energy audit
+The Mayo Energy Audit 2009–2020 is an investigation into the implications of peak oil and subsequent fossil fuel depletion for a rural county in west of Ireland. The study draws together many different strands to examine current energy supply and demand within the area of study, and assesses these demands in
+the face of the challenges posed by the declining production of fossil fuels and expected disruptions to supply chains, and by long-term economic recession.
+
+Sport
+
+The Mayo GAA senior team last won the Sam Maguire Cup in 1951, when the team was captained by Seán Flanagan. The team's third title followed victories in 1936 and the previous year, 1950. Since 1951, the team have made numerous All-Ireland Final appearances (in 1989, twice in 1996, 1997, 2004, 2006, 2012, 2013, twice again in 2016 against Dublin, 2017, 2020, with their latest appearance being against Tyrone in the 2021 final), though the team have failed on all occasions to achieve victory over their opponents.
+
+The team's unofficial supporters club are Mayo Club '51, named after the last team who won the Sam Maguire. The county colours of Mayo GAA are traditionally green and red.
+
+The county's most popular association football teams are Westport United and Castlebar Celtic.
+
+Although Gaelic football and association football are the most popular sport in the county, other sports are popular in the county as well such as rugby, basketball, hurling, swimming, tennis, badminton, athletics, handball and racquetball.
+
+Notable people
+
+ Richard Bourke, 6th Earl of Mayo (1822–1872) – Viceroy of India (1869–1872)
+ Patrick Browne (1720–1790) – physician and botanist
+ Michael Davitt (1846–1906) – Irish republican, agrarian campaigner, labour leader, Home Rule politician and Member of Parliament (MP) who founded the Irish National Land League.
+ Grace O'Malley (circa 1530 – circa 1603) –  Lord of the O'Malley dynasty in the 16th century
+ Admiral William Brown (1777–1857) – Founder of the Argentine Navy
+ Charles Haughey (1925–2006) – Taoiseach of Ireland (1979–1982; 1987–1992)
+ Enda Kenny (born 1951) – Politician, leader of Fine Gael (2002–2017), and Taoiseach of Ireland (2011–2017)
+ John MacBride (1868–1916) – Republican and military leader, executed by the British for his participation in the 1916 Easter Rising
+ William O'Dwyer (1890–1964) – 100th mayor of New York City (1946–1950)
+ Mary Robinson (born 1944) – First female President of Ireland (1990–1997), and United Nations High Commissioner for Human rights.
+ Sally Rooney (born 1991) – Author (Conversations with Friends, Normal People), and screenwriter
+ Martin Sheridan, Olympic Games gold medalist representing the United States
+ Louis Walsh (born 1952) – Entertainment manager and judge on The X Factor (UK), and Ireland's Got Talent
+
+See also
+ High Sheriff of Mayo
+ List of abbeys and priories in the Republic of Ireland (County Mayo)
+ List of loughs of County Mayo
+ List of Mayo people
+ List of mountains and hills of County Mayo
+ List of rivers of County Mayo
+ List of roads of County Mayo
+ Lord Lieutenant of Mayo
+ Mayo County Council
+ River Robe
+ Táin Bó Flidhais
+
+References
+
+External links
+
+ Connaught Telegraph
+ County Mayo: An Outline History
+ Family History in North County Mayo
+ Historical Ballinrobe
+ Irish language in Mayo
+ Wild Atlantic Way Mayo Route Map and Guide
+ Mayo.ie
+ Mayo County Council's website
+ Mayo News
+ The Mayo Peace Park and Garden of Remembrance
+ Western People
+
+ 
+Mayo
+Mayo
+Mayo
+County Fermanagh ( ; ) is one of the thirty-two counties of Ireland, one of the nine counties of Ulster and one of six counties of Northern Ireland
+
+The county covers an area of 1,691 km2 (653 sq mi) and had a population of 63,585 as of 2021. Enniskillen is the county town and largest in both size and population.
+
+Fermanagh is one of four counties of Northern Ireland to have a majority of its population from a Catholic background, according to the 2011 census.
+
+Geography
+
+Fermanagh spans an area of 1,851 km2 (715 sq; mi), accounting for 13.2% of the landmass of Northern Ireland. Nearly a third of the county is covered by lakes and waterways, including Upper and Lower Lough Erne and the River Erne. Forests cover 14% of the landmass (42,000 hectares). It is the only county in Northern Ireland that does not border Lough Neagh.
+
+The county has three prominent upland areas: 
+ the expansive West Fermanagh Scarplands to the southwest of Lough Erne, which rise to about 350m,
+ the Sliabh Beagh hills, situated to the east on the Monaghan border, and 
+ the Cuilcagh mountain range, located along Fermanagh's southern border, which contains Cuilcagh, the county's highest point, at 665m.
+
+The county borders:
+ County Tyrone to the north-east, 
+ County Monaghan to the south-east, 
+ County Cavan to the south-west, 
+ County Leitrim to the west, and 
+ County Donegal to the north-west.
+
+Fermanagh is by far the least populous of Northern Ireland's six counties, with just over one-third the population of Armagh, the next least populous county.
+
+It is approximately  from Belfast and  from Dublin. The county town, Enniskillen, is the largest settlement in Fermanagh, situated in the middle of the county.
+
+The county enjoys a temperate oceanic climate (Cfb) with cool winters, mild humid summers, and a lack of temperature extremes, according to the Köppen climate classification.
+
+The National Trust for Places of Historic Interest or Natural Beauty manages three sites of historic and natural beauty in the county: Crom Estate, Florence Court, and Castle Coole.
+
+Geology
+The oldest sediments in the county are found north of Lough Erne. These so-called red beds were formed approximately 550 million years ago. Extensive sandstone can be found in the eastern part of the county, laid down during the Devonian, 400 million years ago. Much of the rest of the county's sediments are shale and limestone dating from the Carboniferous, 354 to 298 million years ago. These softer sediments have produced extensive cave systems such as the Shannon Cave, the Marble Arch Caves and the Caves of the Tullybrack and Belmore hills. The carboniferous shale exists in several counties of northwest Ireland, an area known colloquially as the Lough Allen basin. The basin is estimated to contain 9.4 trillion cubic metres of natural gas, equivalent to 1.5 billion barrels of oil.
+
+The county is situated over a sequence of prominent faults, primarily the Killadeas – Seskinore Fault, the Tempo – Sixmilecross Fault, the Belcoo Fault and the Clogher Valley Fault which cross-cuts Lough Erne.
+
+History
+The Menapii are the only known Celtic tribe specifically named on Ptolemy's 150 AD map of Ireland, where they located their first colony—Menapia—on the Leinster coast . They later settled around Lough Erne, becoming known as the Fir Manach, and giving their name to Fermanagh and Monaghan. Mongán mac Fiachnai, a 7th-century King of Ulster, is the protagonist of several legends linking him with Manannán mac Lir. They spread across Ireland, evolving into historic Irish (also Scottish and Manx) clans.
+
+The Annals of Ulster which cover medieval Ireland between AD 431 to AD 1540 were written at Belle Isle on Lough Erne near Lisbellaw.
+
+Fermanagh was a stronghold of the Maguire clan and Donn Carrach Maguire (died 1302) was the first of the chiefs of the Maguire dynasty. However, on the confiscation of lands relating to Hugh Maguire, Fermanagh was divided in a similar manner to the other five escheated counties among Scottish and English undertakers and native Irish. The baronies of Knockninny and Magheraboy were allotted to Scottish undertakers, those of Clankelly, Magherastephana and Lurg to English undertakers and those of Clanawley, Coole, and Tyrkennedy, to servitors and natives. The chief families to benefit under the new settlement were the families of Cole, Blennerhasset, Butler, Hume, and Dunbar.
+
+Fermanagh was made into a county by a statute of Elizabeth I, but it was not until the time of the Plantation of Ulster that it was finally brought under civil government.
+
+The closure of all the lines of Great Northern Railway (Ireland) within County Fermanagh in 1957 left the county as the first non-island county in the UK without a railway service.
+
+Administration
+
+The county was administered by Fermanagh County Council from 1899 until the abolition of county councils in Northern Ireland in 1973. With the creation of Northern Ireland's district councils, Fermanagh District Council became the only one of the 26 that contained all of the county from which it derived its name. After the re-organisation of local government in 2015, Fermanagh was still the only county wholly within one council area, namely Fermanagh and Omagh District Council, albeit that it constituted only a part of that entity.
+
+For the purposes of elections to the UK Parliament, the territory of Fermanagh is part of the Fermanagh and South Tyrone Parliamentary Constituency. This constituency elected Provisional IRA hunger-striker Bobby Sands as a member of parliament in the April 1981 Fermanagh and South Tyrone by-election, shortly before his death.
+
+Demographics
+
+ 2011 census 
+On Census Day 27 March 2011, the usually resident population of Fermanagh Local Government District, the borders of the district were very similar to those of the traditional County Fermanagh, was 61,805. Of these:
+ 
+0.93% were from an ethnic minority population and the remaining 99.07% were white (including Irish Traveller)
+59.16% belong to or were brought up in the Catholic religion and 37.78% belong to or were brought up in a 'Protestant and Other Christian (including Christian related)' religion