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.

We have an infinite amount to learn both from nature and from each other.

I don't like the way the whole thing has developed. And I just hope that we develop our own transportation system, both spacecraft and new boosters, as soon as possible. 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.

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

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

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.