When a plane lands in the Hudson and there's a Twitter user on the ferry taking a picture of it, Boom. That's it. The water is still splashing. Here's the photo of the thing.

I think before Twitter people didn't think that way, not in any sort of meaningful or specific way, so what I'm trying to say, if we're trying a bunch of stuff, a lot of cool and great social stuff, a lot of platform stuff, then some of it will stick, and some of it will be junked over. Some of it will be just like the cell phone, you can't imagine not having it.

This idea that the open exchange of information can have a positive global impact is being proven over and over again around the world nearly on a daily basis - and for Secretary Clinton to recognize that, I think, is a huge step.

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.

The determination that led me to create a new sports team taught me an important lesson: opportunity is manufactured.

Even the simplest tools can empower people to do great things.

Understand that you dont have all the answers, you just have to start somewhere and keep an open mind.