I started designing book jackets, which was great because I was good at it. And then from there I decided to become a freelance graphic designer and I needed to expand beyond book jackets, so I taught myself web design, and then in 1999 some friends of mine decided to start a company called Xanga.com, which was a very early kind of social network slash blogging community.

I think we definitely want to focus on the simplicity aspect because it's something that's built into the culture even here at Twitter. Constraints inspire creativity.

Inventing your dream is the first and biggest step toward making it come true.

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

We can break news really fast. When an earthquake happens, there are people Twittering about it.

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.

I've probably overused this analogy of a flock of birds moving around an object in flight, but, in reality, it's so simple, real time communication of individuals that allow for this super organism type of organism to happen.