"Folly is often more cruel in the consequences than malice can be in the intent."

"The only completely consistent people are the dead."

"Words can be like X-rays, if you use them properly- they'll go through anything. You read and you're pierced."

"Facts do not cease to exist because they are ignored."

"Technological progress has merely provided us with more efficient means for going backwards."

"From their experience or from the recorded experience of others (history), men learn only what their passions and their metaphysical prejudices allow them to learn."

"There's something in our world that makes men lose their heads--they couldn't be fair if they tried."

"We immediately become more effective when we decide to change ourselves rather than asking things to change for us."

"If for a tranquil mind you seek, These things observe with care: Of whom you speak, to whom you speak, And how, and when and where."

"We must, however, acknowledge as it seems to me, that a man with all his noble qualities...still bears in his bodily frame the indelible stamp of his lowly origin."

"Self-reverence, self knowledge, self-control. These three alone lead life to sovereign power."

"A teacher affects eternity; he can never tell where his influence stops."