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.

Even though running is physically straining, it's mentally refreshing. Especially when you feel like you've accomplished something.

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.

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

Embrace your constraints. They are provocative. They are challenging. They wake you up. They make you more creative. They make you better.

The most rewarding thing for me has been this affirmation for me that people are basically good and smart, and if you give them a simple tool that allows them to exhibit that behavior, they'll prove it to you every single day.

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.