I think we should be very careful about artificial intelligence. If I had to guess at what our biggest existential threat is, it's probably that. So we need to be very careful...With artificial intelligence we're summoning the demon.

What I'm trying to do is, is to make a significant difference in space flight. And help make space flight accessible to almost anyone.

I think that's the single best piece of advice: constantly think about how you could be doing things better and questioning yourself.

My family fears that the Russians will assassinate me.

I’m nauseatingly pro-American. I would have come here from any country. The U.S. is where great things are possible.

Actively seek out and listen carefully to negative feedback.

There are some important differences between me and Tony Stark, like I have five kids, so I spend more time going to Disneyland than parties.