translation.ca: Si hagués estat un gran filosof ple de saviesa, com l'autor d'aquest llibre, hauria capit aleshores que la feina consisteix en qualsevol cosa que un hom estigui obligat a fer, i que el joc consisteix en qualsevol cosa que un hom no estigui obligat a fer.
translation.en: If he had been a great and wise philosopher, like the writer of this book, he would now have comprehended that Work consists of whatever a body is _obliged_ to do, and that Play consists of whatever a body is not obliged to do.