"When I look upon seamen, men of science and philosophers, man is the wisest of all beings; when I look upon priests and prophets nothing is as contemptible as man."

"He once saw a boy drinking water out of his hands, and immediately threw away the cup which he carried attached to his wallet, saying, 'A boy has beaten me in plainness of living.'"

"The greatest good is freedom from pleasure."

"When I am with two people, I always find one of them my teacher."

"I am searching for the bones of your father but cannot distinguish them from those of a slave."