Nature is pleased with simplicity. And nature is no dummy

Good means not merely not to do wrong, but rather not to desire to do wrong.

Nobody has the power to take two steps together; you can take only one step at a time.

Everything excellent is as difficult as it is rare.

Wonder is the beginning of wisdom.

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

It takes a lot of courage to show your dreams to someone else.

Realize deeply that the present moment is all you ever have.

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

Where you stand depends on where you sit.

Experience is merely the name men gave to their mistakes.

Without courage, wisdom bears no fruit.

In anger we should refrain both from speech and action.

I dream. Sometimes I think that's the only right thing to do.

Wisdom... comes not from age, but from education and learning.

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

He who can destroy a thing, can control a thing.

An understanding of the natural world is a source of not only great curiosity, but great fulfilment.

There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self.

Doubt is the origin of wisdom

I write with experiences in mind, but I don't write about them, I write out of them.