L’humanité se prend beaucoup trop au sérieux ; c’est le péché originel du monde. Si les hommes des cavernes avaient su rire, l’Histoire serait bien différente.

Humanity takes itself too seriously. It is the world’s original sin. If the cave-man had known how to laugh, History would have been different.

Oscar Wilde, Le Portrait de Dorian Gray (1891)
The Major Works, Oscar Wilde