We hired a CSR person at Twitter, years before we hired our first sales person, to make sure we had a culture and impact of doing good.

It's important to credit the brave people that take chances to stand up to regimes. They're the star.

In order to succeed spectacularly you have to be willing to fail spectacularly.

Investors are employees you can never hire. We made sure to pick investors that thought like us.

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.

The future of marketing is philanthropy.

The two things I use the most are the MacBook Air and my iPhone. Those are my two most-used gadgets that are dented, scratched and smashed.