America is in a newly competitive position around the world, and unless we keep our lead in education for all of our people and do the research along with that, other nations will start outdoing us and they will be leaders in the world.

I think sometime we will go to Mars and I think we'll explore it with humans sometime, but I think it's really wise to do all the robotic exploration ahead of time and learn as much as possible. Once we have learned as much as possible with the robots, then that's the time to send people, and let them then continue the research that the robots have started.

That whole day [ of the space flight] is very vividly impressed on my memory because it was such a new experience. We hadn't done that before. And then I've recalled it so often since then I think that it's a - it's remained very vivid over the past 50 years, seems to me like about a week or two instead of 50 years.

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.

A lot of people ask...why a man is willing to risk... Well, we've got to do it. We're going into an age of exploration that will be bigger than anything the world has ever seen... If a man faces up to the (unknown) and takes the dare of the future, he can have some control over his destiny.

To get your name well enough known that you can run for a public office, some people do it by being great lawyers or philanthropists or business people or work their way up the political ladder. I happened to become known from a different route.

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.