"Man's maturity: to have reacquired the seriousness that one had as a child at play."

"The value of a man is not measured by how much he loves, but by how much he is loved."

"What is great in man is that he is a bridge and not an end."

"What is noble? To be able to be alone."

"Silence is worse; all truths that are kept silent become poisonous."