Curiosity is the essence of human existence.
Get the shuttle out of the garage. It's in its prime of its life. How could we just put it away?
I'm quite disappointed that I'm still the last man on the moon.
Prepare for the unknown, unexpected and inconceivable . . . after 50 years of flying I'm still learning every time I fly.
People try to typecast astronauts as heroic and superhuman. We're only human beings.
Am I willing to go to Mars? Yes, but I'm not willing to spend nine months getting there, then wait 18 more months until the planets align to come home.