"True wisdom comes to each of us when we realize how little we understand about life, ourselves, and the world around us."

"He is richest who is content with the least, for content is the wealth of nature."

"My plainness of speech makes them hate me, and what is their hatred but a proof that I am speaking the truth."

"Life contains but two tragedies. One is not to get your heart's desire; the other is to get it."

"We can easily forgive a child who is afraid of the dark; the real tragedy of life is when men are afraid of the light."

"All I know is that I know nothing."

"As to marriage or celibacy, let a man take which course he will, he will be sure to repent."

"A system of morality which is based on relative emotional values is a mere illusion, a thoroughly vulgar conception which has nothing sound in it and nothing true."

"The beginning of wisdom is the definition of terms."

"The really important thing is not to live, but to live well. And to live well meant, along with more enjoyable things in life, to live according to your principles."

"Be nicer than necessary to everyone you meet. Everyone is fighting some kind of battle."

"And so they grow richer and richer, and the more they think of making a fortune the less they think of virtue; for when riches and virtue are placed together in the scales of the balance, the one always rises as the other falls."