I thought the attractions of being an astronaut were actually, not so much the Moon, but flying in a completely new medium.

The single thing which makes any man happiest is the realization that he has worked up to the limits of his ability, his capacity. It's all the better, of course, if this work has made a contribution to knowledge, or toward moving the human race a little farther forward.

Society’s future will depend on a continuous improvement program for the human character. And what will that future bring? I do not know, but it will be exciting.

Man must understand his universe in order to understand his destiny.

Good luck, Mr. Gorsky!

I hope you become comfortable with the use of logic without being deceived into concluding that logic will inevitably lead you to the correct conclusion.

There are people I'll always love to listen to, and I'm always ending up discovering new songs by them, which is crazy. Like Stevie Wonder.