My goal is to simplify complexity.

The strongest thing you can cultivate as an entrepreneur is to not rely on luck but cultivating an ability to recognize fortunate situations when they are occurring.

The greatest lesson that I learned in all of this is that you have to start. Start now, start here, and start small. Keep it Simple.

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

I think Twitter is best when it sparks conversations elsewhere. To use YouTube and Facebook and all the tools we have available to us today to respond and also promote and answer and engage is awesome.

Twitter has been my life's work in many senses. It started with a fascination with cities and how they work, and what's going on in them right now.

You don't have to start from scratch to do something interesting. You don't have to start from scratch to have a massive impact on the world. You have to have a good idea. You have to convince other people of those good ideas. And you have to push as quickly as possible.