The moon is bland in color. I call it shades of gray. You know, the only color we see is what we bring or the Earth, which is looking down upon us all the time. And to find orange soil on the moon was a surprise.

Am I willing to go to Mars? Yes, but I'm not willing to spend nine months getting there, then wait 18 more months until the planets align to come home.

I think America has a responsibility to maintain its leadership in technology and its moral leadership in the world, to explore, to seek knowledge.

Curiosity is the essence of human existence.

OK, let's get this mother out of here.

I hold the world speed record downhill, in a Rover. I think it was 17 kilometers per hour, downhill.

I've been asked about UFOs and I've said publicly I thought they were somebody else, some other civilization.