From an evolutionary standpoint you can't just wipe everything out and start over, and I don't think you can do it in the school system either.

When we explore the cosmos, we come to believe and prove that we can solve problems that have never been solved. It brings out the best in us. Space exploration imbues everyone with an optimistic view of the future.

If you meet somebody who says he or she has never dreamed of flying, I don't believe you. I mean, they're lying.

I understand that you take the Bible, as written in English, translated many many times over the last three millennia as to be a more accurate, more reasonable assessment of the natural laws we see around us than what I and everybody in here can observe. That, to me, is unsettling.

To leave the world better than you found it, sometimes you have to pick up other people's trash.

Anybody who grew up with the space program is a fan of science fiction.

I like to regard myself as someone who's capable of critical thought, that is to say, who can evaluate claims.