Google is working on self-driving cars, and they seem to work. People are so bad at driving cars that computers don't have to be that good to be much better.

There will be certain points of time when everything collides together and reaches critical mass around a new concept or a new thing that ends up being hugely relevant to a high percentage of people or businesses. But it's really really hard to predict those. I don't believe anyone can.

People who tell computers what to do, and people who are told by computers what to do.

I would say the consumer Internet companies - in a lot of ways, if you go inside the consumer Internet companies and you see how they run, it's how all their businesses are going to run.

At a certain point in your career - I mean, part of the answer is a personal answer, which is that at a certain point in your career, it becomes more satisfying to help entrepreneurs than to be one.

Practically everyone is going to have a general purpose computer in their pocket, it's so easy to underestimate that, that has got to be the really, really big one.

The smartphone revolution is under-hyped, more people have access to phones than access to running water. We've never had anything like this before since the beginning of the planet.