Zero G and I feel fine.

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.

We had a lot of confidence that there was going to be a successful mission. We weren't off on some suicide effort, certainly [with Friendship 7].

I don't know what you could say about a day in which you have seen four beautiful sunsets.

America had an emphasis on the individual and so education became available for everyone.

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

To sit back and let fate play its hand out and never influence it is not the way man was meant to operate.