I put up my thumb and it blotted out the planet Earth.

I guess we all like to be recognized not for one piece of fireworks but for the ledger of our daily work.

I think if there was anything I learned from our skipper was that it's not how you look; it's how you perform.

I'm substantially concerned about the policy directions of the space agency. We have a situation in the U.S. where the White House and Congress are at odds over what the future direction should be. They're sort of playing a game and NASA is the shuttlecock that they're hitting back and forth.

It's different, but it's very pretty out here. I suppose they are going to make a big deal of all this.

Gliders, sail planes, they're wonderful flying machines. It's the closest you can come to being a bird.

I suspect that even though the various questions are difficult and many, they are not as difficult and many as those we faced when we started the Apollo [space program] in 1961.