Zero G and I feel fine.

I still have my [flight] license and I can still pass a flight physical.

As far as actually setting up colonies of people who would live their whole lives in space, I think we're a long ways from doing that yet, and I think we have many, many decades before we could be able to even consider something like that.

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

When others kid me about being bald, I simply tell them that the way I figure it, the good Lord only gave men so many hormones, and if others want to waste theirs on growing hair, that's up to them.

We used to joke about canned men, putting people in a can and seeing how far you can send them and bring them back. That's not the purpose of this program... Space is a laboratory, and we go into it to work and learn the new.

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.