Wonder is the beginning of wisdom.

The best revenge is to be unlike him who performed the injury.

Don't take tomorrow to bed with you.

Rest satisfied with doing well, and leave others to talk of you as they please.

Science has not yet taught us if madness is or is not the sublimity of the intelligence.

Creativity is the process of having original ideas that have value.

No man has any natural authority over his fellow men.

Anger begins in folly, and ends in repentance.

In a good bookroom you feel in some mysterious way that you are absorbing the wisdom contained in all the books through your skin, without even opening them.

Man is the only creature who refuses to be what he is.

When you judge another, you do not define them, you define yourself.

It is better to be looked over than overlooked.

The first thing you'll have to do, is the last thing you wished.

Obsession is the wellspring of genius and madness.

I think about the meaning of pain. Pain is personal. It really belongs to the one feeling it. Probably the only thing that is your own. I like mine.

Act as if the maxim of your action were to become through your will a general natural law

Let him who would move the world first move himself.

Intelligence is a moral category.

No act of kindness, no matter how small, is ever wasted.

He alone is free who lives with free consent under the entire guidance of reason.

Those who know, do. Those that understand, teach.