The birth of science was the death of superstition.

The great tragedy of science - the slaying of a beautiful hypothesis by an ugly fact.

Only one absolute certainty is possible to man, namely that at any given moment the feeling which he has exists.

The Bible has been the Magna Charta of the poor and of the oppressed.

If a little knowledge is dangerous, where is the man who has so much as to be out of danger?

It is not who is right, but what is right, that is of importance.

Thoughtfulness for others, generosity, modesty, and self-respect are the qualities which make a real gentleman or lady.

God give me strength to face a fact though it slay me.

Life is too short to occupy oneself with the slaying of the slain more than once.

The secret of genius is to carry the spirit of childhood into maturity.

Make up your mind to act decidedly and take the consequences. No good is ever done in this world by hesitation.

Even now, I still believe metamorphosis is the greatest beauty.

Revealing water in significant quantities on the Moon could truly be a turning point in space exploration.

I'm delighted to make as many people feel ashamed as possible. There's probably a site like that for everybody. I've heard Newt Gingrich has his own as well.

If I say something that ends up on the front page of Drudge, I haven't done it right.

People first feel things without noticing them, then notice them with inner distress and disturbance, and finally reflect on them with a clear mind.

I accept that responsibility and ask only that I be judged by my performance as its chief executive.

No grant of feudal privilege has ever equaled, for effortless return, that of the grandparent who bought and endowed his descendants with a thousand shares of General Motors or General Electric.

I moved to New York first and was really apprehensive about moving to L.A., but I really, really like it.

There is a legend. And to protest is daft.

These days, if you happen to be a poet you have to sing your words to get your ideas out.