Americans just want us to... not be concerned if they can be constitutionally justified... Why, if we had to do that we could not pass most of the laws we enact around here.

The moment of twilight is simply beautiful.

We had an airplane, a Beechcraft Baron, that we - I had since 1981. And Annie [Glenn] and I both of had to have knee replacements unfortunately over the past year, and it made it more difficult to climb up on the airplane. We weren't using it that much so we did - it hurt a lot but I finally sold the airplane.

If there is one thing I’ve learned in my years on this planet, it’s that the happiest and most fulfilled people I’ve known are those who devoted themselves to something bigger and more profound than merely their own self interest.

I still have my [flight] license and I can still pass a flight physical.

As I hurtled through space, one thought kept crossing my mind - every part of this rocket was supplied by the lowest bidder.

Exploration, of course, is going to new places, but I don't think we go to new places just solely to say: "Well, we've been there," and come back, interesting though it may be. To me, each time we go farther into space we should use that to do basic research - basic research that can't be done before you go there.