Don`t let life randomly kick you into the adult you don`t want to become

Spaceflight isn't just about doing experiments, it's about an extension of human culture.

I want to know: How does a space suit on Mars work? Show me how it is pressurized, and how it is cooled. What's the glove design? None of that stuff can be bought off the rack. It does not exist. You can't just go to SpaceMart and buy those things.

I've had a chance to fly a lot of different airplanes, but it was nothing like the shuttle ride.

Doing a space walk. It is one of the most rare human experiences. To leave your spaceship and go outside, so that you are alone in the universe with Earth distant and the universe around you. That is amazing.

It’s not enough to shelve your own competitive streak. You have to try, consciously, to help others succeed.

Do your homework in advance about the actual travel details so transportation issues do not define your holiday.