Giving birth to something that could possibly change the lives of millions of people for possibly decades, hundreds of years, whatever the length of time the run is, is a great feeling.

What makes the meaning of life is people, so you try to be good to people immediately around you and in your broader community. So a lot of my projects are about how I can affect the world in the hundreds of millions.

I think Hillary [Clinton] has [woken up to the plight of the middle class] and is working toward it in a democratic process.

People who take risk intelligently can usually actually make a lot more progress than people who don't.

Social networks do best when they tap into one of the seven deadly sins. Facebook is ego. Zynga is sloth. LinkedIn is greed.

If you are not embarrassed by the first version of your product, you've launched too late.

You remake yourself as you grow and as the world changes. Your identity doesn’t get found. It emerges.