I can hit it farther on the moon. But actually, my swing is better here on Earth. - Alan Shepard

We're going to see passengers in space stations in 15 years, who will be able to buy a ticket and spend a weekend in space.

I realized up there that our planet is not infinite. It's fragile. That may not be obvious to a lot of folks, and it's tough that people are fighting each other here on Earth instead of trying to get together and live on this planet. We look pretty vulnerable in the darkness of space.

If we had said 30 years ago that we were going to have only two incidents with casualties, we would have thought, 'Boy, that's great. To me, that indicates that the program has really exceeded what the early expectations were.