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.

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

I suppose the one quality in an astronaut more powerful than any other is curiosity. They have to get some place nobody's ever been.

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

Liftoff is very, very gentle, contrary to what most people think. Because you remember, the weight of the booster - the amount of thrust on the engine is just barely enough to get the booster underway. And so it's a very gentle liftoff, contrary to what most people think when they see all the fire and smoke of launch.

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

Zero G and I feel fine.