I understand that Detroit was a pretty rough place to grow up in the '70s and '80s.

Fighter pilots have ice in their veins. They don't have emotions. They think, anticipate. They know that fear and other concerns cloud your mind from what's going on and what you should be involved in.

I have no doubt that humans will go to Mars. And I feel that America has led so many things in space - we have invested so much, and we have a lot to gain - that America could and should be the nation that should lead the settlement of Mars.

You can tell I'm not too bashful about some of my feelings.

You can never tell when a commercial space venture will suddenly become viable.

The view from space is like having a globe on your desk -- it's a broadening experience.

There is very little doubt, in my mind, that what the next monumental achievement of humanity will be the first landing by an Earthling, a human being, on the planet Mars.