You can have anything in this world you want, if you want it badly enough and you're willing to pay the price.

In order to be irreplaceable, one must always be different.

The future belongs to those who believe in the beauty of their dreams.

You always admire what you really don't understand.

Animals, whom we have made our slaves, we do not like to consider our equal.

I will indulge my sorrows, and give way to all the pangs and fury of despair.

The true test of a man's character is what he does when no one is watching.

Purity of heart is to will one thing.

Passion goes, Boredom remains.

Children are a wonderful gift. They have an extraordinary capacity to see into the heart of things and to expose sham and humbug for what they are.

I'm not a genius. I'm just a tremendous bundle of experience.

His modesty amounts to deformity.

A scientific man ought to have no wishes, no affections, - a mere heart of stone.

Anxiety is the dizziness of freedom.

I love deadlines. I like the whooshing sound they make as they fly by.

I have great faith in fools; self-confidence my friends call it.

Never lend your car to someone you've given birth to.

You can't deny laughter; when it comes, it plops down in your favorite chair and stays as long as it wants.

I want to put a ding in the universe.

Religion and art spring from the same root and are close kin. Economics and art are strangers.

Courage is not simply one of the virtues, but the form of every virtue at the testing point.