What has changed is that people have stopped working together.

Central planning didn't work for Stalin or Mao, and it won't work for an entrepreneur either.

Design does matter. And not necessarily in a way that people realize. A lot of what you do, people take for granted - that a park has always been here, that a bicycle lane has always been there, that the street is safe or clean.

I don't believe that government is good at picking technology, particularly technology that is changing. By the time you get it done and go through democracy, it's so outdated.

The next day after I got fired, literally the next day, I started a new company.

This society cannot go forward, the way we have been going forward, where the gap between the rich and the poor keeps growing. It's not politically viable; it's not morally right; it's just not going to happen.

I do not think that anybody should get paid for lousy performance. I've said that for a long time. If you work hard and you do good, you get paid well.