NASA has spin-offs, and it's a huge and very impressive list, including accurate and affordable LASIK eye surgery.

I'm revealing information to people. I'm not creating it. And to the extent that people embrace it, I think they're empowered by it, because any time you have a bigger perspective today than you did yesterday, it's got to be only for the good of your mind, your body, your soul.

If God to you is where science has yet to tread, then God is an ever-receding pocket.

I can tell you about the universe, but she feels it; and when you feel the universe, it has a whole other meaning to you. Otherwise, you just put a Wiki page on camera. You can learn something, but it won't mean anything to you later on.

I always wanted to be respected for my mind.

Science is like an inoculation against charlatans who would have you believe whatever it is they tell you.

We should not measure our space-faring era by where footprints have been laid.... We should measure our era by how many people take no notice at all. A legacy rises to become culture only when its elements are so common that they no longer attract comment.