People often mistake technology for a static picture. It's less like a picture and more like a movie. It's the velocity of technology innovation that matters. It's the acceleration.

If we drive down the cost of transportation in space, we can do great things.

I don't spend my time pontificating about high-concept things; I spend my time solving engineering and manufacturing problems.

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.

A Prius is not a true hybrid, really. The current Prius is, like, 2 percent electric. It's a gasoline car with slightly better mileage.

My opinion is it's a bridge too far to go to fully autonomous cars.

You want to do things you’re passionate about but also are useful to other people.