Men should strive to think much and know little.

Men show their characters in nothing more clearly than in what they think laughable.

Drink does not drown care, but waters it, and makes it grow faster.

Reading furnishes the mind only with materials of knowledge; it is thinking that makes what we read ours.

You must try to observe yourself more and more objectively, to look at everything in yourself as though another person.

There is nothing more frightful than ignorance in action.

I've always felt that a person's intelligence is directly reflected by the number of conflicting points of view he can entertain simultaneously on the same topic.

A man is as big as the measure of his thinking.

You are the only person who thinks in your mind. You are the power and authority in your world.