The idea of Twitter started with me working in dispatch since I was 15 years old, where taxi cabs or firetrucks would broadcast where they were and what they were doing.

From a product standpoint, we want every touch point to feel magical. It inspires trust.

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.

Your job as an executive is to edit, not write. It's OK to write once in a while but if you do it often there's a fundamental problem with the team. Every time you do something ask if you're writing or editing and get in the mode of editing.

Twitter is the world.

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.

Success is never accidental.