Test pilots have a litmus test for evaluating problems. When something goes wrong, they ask, "Is this thing still flying?" If the answer is yes, then there's no immediate danger, no need to overreact.

History has spurts and then is steady, and then maybe even backing up a step, and then forward again.

As the centuries unfold, millions of artists will live on the moon and paint the moon and Mars as we go out into the universe.

I feel like everyone who goes to The University of Texas is blessed and lucky to be there because they're getting a chance to be as good as they can be.

But I'm the only one who can paint the moon, because I'm the only one who knows whether that's right or not.

Eventually there are going to be cities in space.

It's hard not to be excited when you're going to find a way to land on the moon.