In order for us to have a future that's exciting and inspiring, it has to be one where we're a space-bearing civilization.

There's a real opportunity to have a vertical takeoff and landing electric supersonic jet.

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.

Many things are improbable, only a few are impossible.

Silicon Valley has evolved a critical mass of engineers and venture capitalists and all the support structure - the law firms, the real estate, all that - that are all actually geared toward being accepting of startups.

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.

The reason we should do a carbon tax is because it's the right thing to do. It's economics 101, elementary stuff.