I took my nose ring out after Twitter’s first round of financing.

Twitter is about moving words. Square is about moving money.

Expect the unexpected. And whenever possible, be the unexpected.

You can worry about the competition or you can focus on what’s ahead of you and drive fast.

You don’t have to start from scratch to do something interesting.

A founder is not a job, it’s a role, an attitude.

It’s really complex to make something simple. I’ve always been fascinated by cities and how they work. And I taught myself how to program so I can understand how the city works.

Make every detail perfect and limit the number of details to perfect.

I spend 90% of my time with people who don’t report to me, which