Constraints inspire us in how we approach the press, how we approach business relationships, how we do everything.

IM is interesting because you look at your buddy list and, at a glance, see what your friends are listening to, what they're working on, what they're doing. The problem was that you were bound to the computer keyboard.

We get to design what we want to see in the world rather than doing what other people think should be done.

Amazing what people make up based on what they choose to see.

Meet customers where they are; question how to make the tools customers use more valuable.

I think Twitter is the future of communications and Square will be the payment network.

Constraints inspire us in how we approach the press, how we approach business relationships, how we do everything.