Believe that if you make courageous choices and bet on yourself and put yourself out there, that you will have an impact, as a result of what you do. And you don't need to know now what that would be or how will it happen because no one ever does.

People have Plato's form in their mind of what a leader is, or what a C.E.O. is, and it is a bunch of elements that I really don't conform to at all. I've given this a lot of thought, and I came to the conclusion that I don't care.

The way you build trust with your people is by being forthright and clear with them from day one. You may think people are fooled when you tell them what they want to hear. They are not fooled.

Don't always worry what your next line is going to be.

That’s just silly. Closing a global business in reaction to single-issue national politics is foolish.

Twitter brings you closer. I mean, we see this over and over again from our users. It brings them closer to the action. It brings them closer to their heroes.

I was in Shanghai recently, where Twitter is blocked, and yet there were ads and billboards across town with hashtags on them.