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

For me, I am driven by two main philosophies, know more today about the world than I knew yesterday. And along the way, lessen the suffering of others. You'd be surprised how far that gets you.

Ever since there have been people, there have been explorers, looking in places where other hadn't been before. Not everyone does it, but we are part of a species where some members of the species do, to the benefit of us all.

The greatest of people that have ever been in society, they were never versions of someone else. They were themselves.

95, 96 percent of all that drives the universe has no known origin.

You ask people, do you pray to [a person or] God. If you say yes to that, you're religious by, presumably, anybody's standards of your conduct. And it's the yes to that question that applies to 40% of scientists. So, there're plenty of atheists who are scientists or not scientists. There maybe a conflict but many people in this country coexist in both worlds.

If our solar system is not unusual, then there are so many planets in the universe that, for example, they outnumber the sum of all sounds and words ever uttered by every human who has ever lived. To declare that Earth must be the only planet with life in the universe would be inexcusably bigheaded of us.