I still love to fly and I'll never get over that.

I think a mentor gets a lot of satisfaction in a couple of ways. They're doing something constructive, so they feel good about that. And when they see the results of this, with the young people they're working with, it's very, very rewarding.

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.

By its very definition, civic responsibility means taking a healthy role in the life of one's community. That means that classroom lessons should be complemented by work outside the classroom. Service-learning does just that, tying community service to academic learning.

I hate to think that we may be out there seven to ten years out and dependent on the Russians for our journey into space.

I don't know what you could say about a day in which you have seen four beautiful sunsets.

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