Anything we can do in the near future that begins to stimulate the interest of people - seeing somebody down the street have an opportunity to go into space - buoys up the whole neighborhood.

There are a lot of people that get interested in something, and they hear about it, and they read about it, and then they watch it happen, and that's why I had quite an interest in the lottery because you'd interest a lot of people, and then just a few would win a chance to do something.

I think the people who experienced the Apollo missions came away from that experience wondering to themselves, 'When can we get a chance to experience spaceflight?' I've heard that many, many times: that people got into a new career field hoping that they would be able to experience spaceflight.

Fear and worry are emotions that cloud the mind from being able to think clearly, to remember what the procedures are to deal with that emergency.

I don't think we're going to build a 50-person spacecraft or a 100-person spacecraft.

Any observations from the Moon or a sense of realising this or that about the greater meaning of things wasn't as influential for me as the experience of coming back and dealing with being a person who's been to the Moon.

Climate has been changing for billions of years.