"I don't think the human race will survive the next thousand years, unless we spread into space. There are too many accidents that can befall life on a single planet. But I'm an optimist. We will reach out to the stars."
"I like to be involved in things that change the world. The Internet did, and space will probably be more responsible for changing the world than anything else. If humanity can expand beyond the Earth, obviously that's where the future is."