My family fears that the Russians will assassinate me.

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.

The biggest mistake, in general, I've made, is to put too much of a weighting on someone's talent and not enough on their personality. And I've made that mistake several times. I think it actually matters whether somebody has a good heart, it really does. I've made the mistake of thinking that it's sometimes just about the brain.

It's a fixer-upper of a planet but we could make it work.

People work better when they know what the goal is and why. It is important that people look forward to coming to work in the morning and enjoy working.

Don't be afraid of new arenas.

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