The way I see it, commercial interests should manage a lunar base while NASA gets on with the really important task of flying to Mars.

People communicate in Twittering ways. I've learned how to do that.

Monumental achievements by humanity should be done by major organizations as much together as possible.

We should go boldly where man has not gone before. Fly by the comets, visit asteroids, visit the moon of Mars. There's a monolith there. A very unusual structure on this potato shaped object that goes around Mars once in seven hours. When people find out about that they're going to say 'Who put that there? Who put that there?' The universe put it there. If you choose, God put it there.

I didn't start skiing until I was 50. My wife Lois taught me how to ski. I'm proficiently conservative.

We have the ability, at such high fidelity, to simulate the physical world through computers. But when the spiritual world or human behavior comes into play, we don't have a very good model for that at all.

Training was very extensive, and we dealt with many recoveries from emergencies, and fortunately, participating and observing and existing through the reality of space was a once-in-a-lifetime experience and it was not marred by unexpected hazards or catastrophes.