We'll go back to the moon by not learning anything new.

Testing leads to failure, and failure leads to understanding.

In the coming era of manned space exploration by the private sector, market forces will spur development and yield new, low-cost space technologies. If the history of private aviation is any guide, private development efforts will be safer, too.

It's not good enough for us to have generations of kids that... look forward to a better version of a cell phone with a video in it. They need to look forward to exploration.

I know I can't plan in this business, but I'm going to keep going as long as I keep getting close... So far, I feel lucky and infinitely grateful for the successes that I've had. I'm just going to keep working hard, and whatever happens, happens.

Motivation is what gets you started. Habit is what keeps you going.

We can't understand what we've accomplished on civil rights without telling the story of Bayard Rustin. And now, we must write the next chapter in the American civil rights story by drawing strength and inspiration from his moral courage.

If somebody asked me about my inspiration I would say that it's not the peopleand it's not the things, it's travel and experiencing different environments.