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.

At Twitter, mobile is in our DNA ... For us, it's all about mobile, and it always has been.

Inventing your dream is the first and biggest step toward making it come true.

Creativity comes from constraint.

I got an idea: people like news why don't we write the news down on a piece of paper, and we'll gas them up and drive them to everyone's house. I mean, if you were going to say that now, it doesn't sound like a great idea, because there are other ways you can distribute the news.

We didn't have anything before Twitter that allowed a group of people roaming around a city to communicate instantly, in real time, and in a coordinated way, in a group.

People first. Technology second.