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.

I never even graduated college. I never finished learning, as it were, and I have a psychological need to be in a learning environment at all times.

I think of Twitter as a messaging system that you didn't know you needed until you had it. Think about when cell phones first started coming out. People said, "Why would I carry my phone around?" And now you'll drive back to your house thirty miles if you forget your cell phone.

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.

Creativity comes from constraint.

Creativity is an infinitely renewable resource - you are not going to run out of it - so don't be afraid to use it.

Doing startups is all about making mistakes.