I'm really hopeful about the future of space exploration and human spaceflight. Civilization as we know it has been defined by exploration. You know, we need to go off and find out what's around the next corner and what's just beyond what we already know. It's part of our being; it's part of our moral fiber to go off and explore.

Flying in space is risky. It will never be safe, and the best thing we can do is manage those risks. It's important for people, for human beings, to be in space because they're adaptable and because they're not pre-programmed software that can go off and do tasks that are appropriate for machines.

I flew fighters for the Navy in San Diego for three years, went and did my post-graduate education, and then I was a test pilot in Patuxent River, Maryland, for a few years. I was back in the fleet in the Navy when I was selected to come back here to NASA to become an astronaut.

Moving around a lot allows you to experience many different cultures and learn about the ways that different people in different parts of the country live, and it probably made me somewhat more adventuresome and allowed me to meet my future wife in Pensacola.

Being a father has fulfilled me in parts of my life that sustain me. It gives me a comfort and patience. All actors have this hole inside that they're trying to fill by performing. I'm anxious to keep creating, but I'm not so desperate any more because I have the love and support of my kids and wife.

There's a lot of stigma attached to being in a home. Other parents don't want their kids to play with you because you're naughty or nasty.

I guess more than anything, I just realized, okay, one day I had a home to live in and my family around me. The next day, I did not.

The meat that I choose to feed my family, it's healthy meats such as lamb, which is very low in cholesterol and saturated fat. And then turkey - we eat a lot of turkey. We don't eat loads of beef.