A mind concerned about danger is a clouded mind. It's paralyzing.

Neil Armstrong was the first man to walk on the moon. I am the first man to piss his pants on the moon.

I think we need to move to the moons of Mars and learn how to control robots that are on the surface. It's not the impatient way of getting there, but Mars has been there a long time.

Long-term, I see robotics prevailing on the moon. . . . The most important decision we'll have to make about space travel is whether to commit to a permanent human presence on Mars. Without it, we'll never be a true space-faring people.

America must dream again, and have the faith to achieve the dream.

Not everyone will understand this need for America to lead the world in space.

The biggest benefit of Apollo was the inspiration it gave to a growing generation to get into science and aerospace.