If there is one thing I’ve learned in my years on this planet, it’s that the happiest and most fulfilled people I’ve known are those who devoted themselves to something bigger and more profound than merely their own self interest.

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

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.

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.

Too many people, when they get old, think that they have to live by the calendar.

It was the time of the Cold War and so there were was a lot of pressure on the - to get going and the Russians were claiming that they were - Soviets were claiming they were ahead of us in technology. And so it was against that backdrop that the early space flights took off.

In America, we have no means of getting to our own Space Station. We have to pay the Russians to put our people up there to send them into space - rendezvous with the Station and bring them back at the end of their stay, and that to me is just wrong. We're supposed to be the world's greatest space-faring nation, and to cancel our own means of getting there I thought was a mistake, even though it would save some money.