Creativity is a renewable resource. Challenge yourself every day. Be as creative as you like, as often as you want, because you can never run out. Experience and curiosity drive us to make unexpected, offbeat connections. It is these nonlinear steps that often lead to the greatest work.

You have to have an emotional investment in what you're doing. If you don't love what you're doing, failure is pretty much guaranteed.

You have to think for an email. What's the subject? What's it about? It takes two seconds to think about that. So you have to think, Is this a work thing or a social thing? Which? Then you get into a situation that you don't want to be in, because then people are thinking about it too much.

If people are passionate about your product, whether it's because they're hating or loving it, those are both good scenarios.

It's important to credit the brave people that take chances to stand up to regimes. They're the star.

The thing that excites me, and the thing that excited me about Twitter, is the idea of a flock of birds moving around an object in flight.

The normal press cycle is to put a company on a pedestal and then knock it down. It's much more interesting that way.