Life on Earth is at an ever-increasing risk of being wiped out by disaster. ... I think the human race doesn't have a future if it doesn't go into space. I therefore want to encourage public interest in space.

What is grit? Grit is refusing to give up. It's persistence. It's making your own luck.

It's sad that the U.S. government doesn't fund risky research anymore.

The first trillionaire can be made in space.

One of my goals is to reinvent philanthropy.

I don't think the space station is innovative. Going to the moon was innovative because we had no idea how to do it.

I believed that once we got to the Moon, there was no stopping us. But in fact, we did stop.