It is the mark of an educated mind to be able to entertain a thought without accepting it.

All truth passes through three stages. First, it is ridiculed. Second, it is violently opposed. Third, it is accepted as being self-evident.

Obsession is the wellspring of genius and madness.

Nature is pleased with simplicity. And nature is no dummy

We must live together as brothers or perish together as fools.

Intelligence is a moral category.

Knowledge speaks, but wisdom listens

The path to success is to take massive, determined action.

I believe that one defines oneself by reinvention. To not be like your parents. To not be like your friends. To be yourself. To cut yourself out of stone.

Better mad with the rest of the world than wise alone.

We choose our joys and sorrows long before we experience them.

A man is literally what he thinks.

Experience teaches us that it is much easier to prevent an enemy from posting themselves than it is to dislodge them after they have got possession.

We sometimes congratulate ourselves at the moment of waking from a troubled dream; it may be so the moment after death.

Kind words don't cost much. Yet they accomplish much.

Don't criticize what you can't understand.

To a wise and good man the whole earth is his fatherland.

If you don't behave as you believe, you will end by believing as you behave.

Fear doesn't exist anywhere except in the mind.

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

Yesterday is but today's memory and tomorrow is today's dream.