Prepare for the unknown, unexpected and inconceivable . . . after 50 years of flying I'm still learning every time I fly.

Yes, I am the last man to have walked on the moon, and that's a very dubious and disappointing honor. It's been far too long.

Curiosity is the essence of human existence.

We don't have the capability today to put a human being in space of any kind, shape or form, which is absolutely, totally unacceptable when we got the greatest flying machine in the world sitting down at Kennedy in a garage there with nothing to do.

Mom was always doing something for somebody. She came from a Czech background, one that made her a devout Catholic and gave her a strong belief in the family.

If the guidance failed or started to stray or went somewhere we didn't like or the ground didn't like, I could flip a switch, and I could control seven, over seven and a half million pounds of thrust with this handle and fly the thing to the Moon myself.

I think America has a responsibility to maintain its leadership in technology and its moral leadership in the world, to explore, to seek knowledge.