Once you understand that everybody's going to get connected, a lot of things follow from that. If everybody gets the Internet, they end up with a browser, so they look at web pages - but they can also leave comments, create web pages. They can even host their own server! So not only is everybody consuming, they can also produce.

Newspapers with declining circulations can complain all they want about their readers and even say they have no taste. But you will still go out of business over time. A newspaper is not a public trust - it has a business model that either works or it doesn't.

The multipurpose device will always fail.

If there's been a crisis in a market, you don't tend to have a new crisis in that market until the people who went through the last crisis aren't in the system anymore.

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.

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?

With lower start-up costs and a vastly expanded market for online services, the result is a global economy that for the first time will be fully digitally wired - the dream of every cyber-visionary of the early 1990s, finally delivered, a full generation later