My own theory is that we are in the middle of a dramatic and broad technological and economic shift in which software companies are poised to take over large swathes of the economy

The most important thing is to get on the right horse.

Skype has a great engineering team, which I like to describe as 'all of Estonia.'

There's no such thing as the middle class. It's absolutely vanishing.

If I want to get work done, that's usually about 3 in the morning.

There is the opportunity to do more and better if you're smaller and more nimble.

You only ever experience two emotions: euphoria and terror. And I find that lack of sleep enhances them both.