"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 think the one thing that we are not doing enough today is encouraging young people to take risks."

"The future of space exploration is not just about going to the moon or Mars, it's about expanding human knowledge."

"It's a grand and glorious feeling to be on the Moon."

"I guess we all like to be recognized not for one thing, but for the whole enchilada."