Space in general gave us GPS. That's not specifically NASA, but it's investments in space.

You know that passage in the Bible that says, ‘And the meek shall inherit the Earth’? Always wondered if that was mistranslated. Perhaps it actually says, “And the geek shall inherit the Earth.

I have to recognize the elements of exploration that excite people. It's not only the discoveries and the beautiful photos that come down from the heavens; it's the vicarious participation in discovery itself.

I said that if an alien came to visit, I'd be embarrassed that we fight wars to pull fossil fuels out of the ground to run our transportation. They'd be like,'What?'

In 5-billion years the Sun will expand & engulf our orbit as the charred ember that was once Earth vaporizes. Have a nice day.

The cosmic perspective not only embraces our genetic kinship with all life on Earth but also values our chemical kinship with any yet to be discovered life in the universe, as well as our atomic kinship with the universe itself.

No astrophysicist would deny the possibility of life. I think we're not creative enough to imagine what life would be like on another planet. Show me a dead alien. Better yet, show me a live one.

Stephen Hawking's been watching too many Hollywood movies. I think the only kind aliens in Hollywood are the ones created by Steven Spielberg — 'Close Encounters of the Third Kind' and 'E.T.,' for example. All other aliens are trying to suck our brains out.

I think the greatest people in society carved niches that represented the unique expression of their combinations of talents, and if everyone had the luxury of expressing the unique combination of talents in this world, our society would be transformed overnight.

For centuries, epilepsy was the exact expectation of someone being possessed by the Devil. There was no better explanation, and it allows you to admit the existence of the Devil. If there's a Devil, that mean's there's a God.