"Perfect freedom is reserved for the man who lives by his own work and in that work does what he wants to do."

"A man ceases to be a beginner in any given science and becomes a master in that science when he has learned that he is going to be a beginner all his life."

"What a man is ashamed of is always at bottom himself; and he is ashamed of himself at bottom always for being afraid."

"Like other revolutionaries I can thank God for the reactionaries. They clarify the issue."

"Parenthood is not an object of appetite or even desire. It is an object of will. There is no appetite for parenthood; there is only a purpose or intention of parenthood."