"The surest sign of the estrangement of the opinions of two persons is when they both say something ironical to each other and neither of them feels the irony."

"That which does not kill us makes us stronger."

"The most common lie is that with which one lies to oneself; lying to others is relatively an exception."

"The higher men are distinguished from the lower by their fearlessness and their readiness to challenge the highest values."

"All I need is a sheet of paper and something to write with, and then I can turn the world upside down."