The universe is the way it is. It's not going to be changed by supplications.

For every winner, there's a loser. And that person didn't really need to lose. They just didn't understand the game plan.

It's been one of the greatest challenges that ever came along in my life; it was one of the more difficult things to do.

Some things just can't be described. And stepping onto the moon was one of them.

I know: If you're looking down at Earth, you're looking through an atmosphere that has a bit of haze in many places and not just occasional clouds.

The decision to go to the moon is now appreciated and associated with President Kennedy's speech, but somebody else had told him it was a good idea. It turned out to be a good commitment, but it was a unique situation.

By refocusing our space program on Mars for America's future, we can restore the sense of wonder and adventure in space exploration that we knew in the summer of 1969. We won the moon race; now it's time for us to live and work on Mars, first on its moons and then on its surface.