"I was always a little uncomfortable with the level of celebrity that came with the moon landing."

"It was a surprise to me that we were able to bring back as much as we did."

"It suddenly struck me that that tiny pea, pretty and blue, was the Earth. I put up my thumb and shut one eye, and my thumb blotted out the planet Earth. I didn't feel like a giant. I felt very, very s…"

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

"The views of the Earth from the moon, they're not just pictures, they're experiences."