In the startup world, you're either a genius or an idiot. You're never just an ordinary guy trying to get through the day

Big breakthrough ideas often seem nuts the first time you see them.

We have never lived in a time with the opportunity to put a computer in the pocket of 5 billion people.

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.

In the next 10 years, I expect at least five billion people worldwide to own smartphones, giving every individual with such a phone instant access to the full power of the Internet, every moment of every day.

One of the advantages of moving quickly is if you do something wrong you can change it. What technologies tend to do is they tend to make a lot of mistakes... but then we go back and aggressively attack those mistakes - and fix them. And you usually recover pretty quickly.

At Microsoft, they all rock back and forth like Gates, they wear the same glasses, they have the same hair style. Maybe they grow them in tanks.