If you hide your ignorance, no one will hit you and you'll never learn.
See the world. It's more fantastic than any dream.
I don't try to describe the future. I try to prevent it.
I feel I'm doing what I should've done a lifetime ago. For a little while I'm not afraid. Maybe it's because I'm doing the right thing at last. Maybe it's because I've done a rash thing and don't want to look the coward to you.
When a man talks from his heart, in his moment of truth, he speaks poetry.
Space travel is life-enhancing, and anything that's life-enhancing is worth doing. It makes you want to live forever.