To make discoveries, you have to be curious about why the universe is the way it is.

A fire-eater must eat fire even if he has to kindle it himself.

I'm gradually managing to cram my mind more and more full of things. I've got this beautiful mind and it's going to die, and it'll all be gone. And then I say, not in my case. Every idea I've ever had I've written down, and it's all there on paper. And I won't be gone; it'll be there.

If I were not an atheist, I would believe in a God who would choose to save people on the basis of the totality of their lives and not the pattern of their words. I think he would prefer an honest and righteous atheist to a TV preacher whose every word is God, God, God and whose every deed is foul, foul, foul.

Intuition is the art, peculiar to the human mind, of working out the correct answer from data that is, in itself, incomplete or even, perhaps, misleading.

Night will always be a time of fear and insecurity, and the heart will sink with the sun.

There is no belief, however foolish, that will not gather its faithful adherents who will defend it to the death.