The exciting part for me, as a pilot, was the landing on the moon. That was the time that we had achieved the national goal of putting Americans on the moon. The landing approach was, by far, the most difficult and challenging part of the flight. Walking on the lunar surface was very interesting, but it was something we looked on as reasonably safe and predictable. So the feeling of elation accompanied the landing rather than the walking.

The regret on our side is, they used to say years ago, we are reading about you in science class. Now they say, we are reading about you in history class.

Fear is not an unknown emotion to us.

I believe that every human has a finite number of heartbeats. I don't intend to waste any of mine running around doing exercises.

No matter when you had been to this spot before, a thousand years ago or a hundred thousand years ago, or if you came back to it a million years from now, you would see some different things each time, but the scene would be generally the same.

History will remember the twentieth century for two technological developments: atomic energy and space flight.

I can honestly say - and it's a big surprise to me - that I have never had a dream about being on the moon.