The first complaint we hear from everyone is: 'Why would I want to join this stupid useless thing and know what my brother's eating for lunch?' But that really misses the point because Twitter is fundamentally recipient-controlled - you choose to listen and you choose to leave. But you also choose what to put down and what to share.

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

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.

Don't avoid eye contact and don't be late

Short term satisfaction will never lead to something timeless.

My goal is to simplify complexity.

Pick a movement, pick a revolution and join it.