I mean, even when it's really simple, there's so much amazing beautiful creativity that can come out of that.

The two things I use the most are the MacBook Air and my iPhone. Those are my two most-used gadgets that are dented, scratched and smashed.

When you think about email or IMing, why aren't you writing back? I can see your avatar, I know you're online, why aren't you writing me back? But with Twitter, everybody sends their responses to Twitter, and Twitter then sends them out to everyone. So there's not this constant connection. You can be hyperconnected, then you can take a break for a couple days and it's fine.

Have confidence in your ideas before they even exist.

At Twitter, mobile is in our DNA ... For us, it's all about mobile, and it always has been.

A Twitter update is simple and fast and gets the information and news, and it spreads it very quickly, and it can contain links so you can then link to this whole context of information.

Doing startups is all about making mistakes.