"The greatest happiness for a man is to be free."

"There is no absurdity so palpable but that it may be firmly planted in the human head if you only begin to inculcate it before the age of five, by constantly repeating it with an air of great solemnit…"

"A sense of humour is the only divine quality of man."

"The more intelligent a man is, the more pain he will experience."

"Life is a constant dying."