We feel that this stands as a symbol of the insatiable curiosity of all mankind to explore the unknown.

When I am getting ready to cross a street, I look both ways before crossing. My bones, my muscles, are not what they used to be, so I am careful when I go up and down stairs, because I've heard stories of older people falling and having very disabling injuries. I have enough things that begin to go a little bit wrong as I get a little bit older.

The energy varies with the square of the velocity, so if you need five times the velocity, that's 25 times the energy.

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.

American greatness was elevated significantly after Sputnik.

For every winner, there's a loser. And that person didn't really need to lose. They just didn't understand the game plan.

You can tell I'm not too bashful about some of my feelings.