„Humour is the only test of gravity, and gravity of humour. For a subject which would not bear raillery is suspicious; and a jest which would not bear a serious examination is certainly false wit.“
— Aristotle Classical Greek philosopher, student of Plato and founder of Western philosophy -384 - -322 p. n. e.
Anthony Ashley-Cooper, 3rd Earl of Shaftesbury, Sensus Communis: An Essay on the Freedom of Wit and Humour (1709), Part 1, Sec. 5, incorrectly attributing it to Gorgias via Aristotle.