The big problem that is holding back Linux is games. People don't realize how critical games are in driving consumer purchasing behavior. We want to make it as easy as possible for the 2,500 games on Steam to run on Linux as well.

Traditional credentialing really doesn't have a lot of predictive value to if people will be successful.

Ninety percent of games lose money; 10 percent make a lot of money. And there's a consistency around the competitive advantages you create, so if you can actually learn how to do the art, the design, and the programming, you would be consistently very profitable.

The culture at Valve is pretty much crowdsourced. The handbook is a wiki. One of the first things we say to new hires is, 'You have to change something in the handbook.'

Computing lets people express their creativity and unlock solutions, and code is computing's universal language. All young people, including girls, deserve to be fluent in the language of the future.

I consider Apple to be very closed. Let's say you have a book business, and you are charging 5 to 7 percent gross margins; you can't exist in an Apple world because they want 30 percent, and they don't care that you only have 7 percent to play with.

One thing that we have learned is that piracy is not a pricing issue. It's a service issue.