I'd dropped out of college to start design thing.

I never even graduated college. I never finished learning, as it were, and I have a psychological need to be in a learning environment at all times.

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.

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

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

I'm curious about writing in the age of online publishing. Because nobody cares about good writing online.

I haven't been paying attention to politics long enough to have really smart opinions.