“A man who takes himself too seriously will find that no one else takes him seriously.”

“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.”

“It is a curious fact that people are never so trivial as when they take themselves seriously”

“If you pretend to be good, the world takes you very seriously. If you pretend to be bad, it doesn't. Such is the astounding stupidity of optimism.”

“Life is too important to be taken seriously.”

“Art is the only serious thing in the world. And the artist is the only person who is never serious.”

“Some things are too important to be taken seriously.”