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.

We call it the 'Rule of Crappy People'. Bad managers hire very, very bad employees, because they're threatened by anybody who is anywhere near as good as they are.

The great companies get built by their founders

Breakthrough ideas look crazy, nuts. It’s hard to think this way — I see it in other people’s body language, and I can feel it in my own, where I sometimes feel like I don’t even care if it’s going to work, I can’t take more change. O.K., Google, O.K., Twitter—but Airbnb? People staying in each other’s houses without there being a lot of axe murders?

Where I grew up, we had the three TV networks, maybe two radio stations, no cable TV. We still had a long-distance party line in our neighborhood, so you could listen to all your neighbors' phone calls. We had a very small public library, and the nearest bookstore was an hour away.

People tend to think of the web as a way to get information or perhaps as a place to carry out e-commerce. But really, the web is about accessing applications.

The difference between a vision and a hallucination is that other people can see the vision.