"Knowledge is fundamental to all human achievement and progress. It is both the key and the quest that advances mankind. The search for knowledge is what brought men to the moon; but it took knowledge …"

"It's a wonderful feeling to be able to look back and say, 'We did that.'"

"I put my thumb up and I could hide the whole Earth behind my thumb. I felt like a little tiny speck in this vast universe."

"I believe that the Good Lord gave us a finite number of heartbeats and I'm damned if I'm going to use up mine running up and down a basketball court."

"Pilots take no special joy in walking: Pilots like flying. Pilots generally take pride in a good landing, not in getting out of the vehicle."