As long as men are free to ask what they must, free to say what they think, free to think what they will, freedom can never be lost and science can never regress.

It is a profound and necessary truth that the deep things in science are not found because they are useful: they are found because it was possible to find them.

The peoples of this world must unite or they will perish.

I am become Death, the destroyer of worlds.
N.B.: This is a paraphrase from the ancient Hindu text, the Bhagavad Gita.

Any man whose errors take ten years to correct is quite a man.

If the radiance of a thousand suns
Were to burst at once into the sky
That would be like the splendour of the Mighty One...
I am become Death,
The shatterer of worlds.

[Quoted from the Bhagavad Gita after the bombing of Hiroshima and Nagasaki.]