Advertising works most effectively when it's in line with what people are already trying to do. And people are trying to communicate in a certain way on Facebook - they share information with their friends, they learn about what their friends are doing - so there's really a whole new opportunity for a new type of advertising model within that.

I'm a great believer that any tool that enhances communication has profound effects in terms of how people can learn from each other, and how they can achieve the kind of freedoms that they're interested in.

You have to be able to communicate in life and probably schools underemphasize that. If you can't talk to people or write, you're giving up your potential.

There are tones of voices that mean more than words.

An idea comes as near to something for nothing as you can get.

Families break up when they get hints you don't intend and miss hints that you do.