There are times when you devote yourself to a higher cause than personal safety.

I am a stranger. I come in peace. Take me to your leader and there will be a massive reward for you in eternity.

To sit back and let fate play its hand out and never influence it is not the way man was meant to operate.

If we could do something that enhances the body's immune system here on Earth, it would be a tremendous step forward in the fight against disease and cancer and other things.

There is still no cure for the common birthday.

We had an airplane, a Beechcraft Baron, that we - I had since 1981. And Annie [Glenn] and I both of had to have knee replacements unfortunately over the past year, and it made it more difficult to climb up on the airplane. We weren't using it that much so we did - it hurt a lot but I finally sold the airplane.

Exploration, of course, is going to new places, but I don't think we go to new places just solely to say: "Well, we've been there," and come back, interesting though it may be. To me, each time we go farther into space we should use that to do basic research - basic research that can't be done before you go there.