Know your numbers' is a fundamental precept of business.

I would counsel people to go to college, because it's one of the best times in your life in terms of who you meet and develop a broad set of intellectual skills.

You can always think of something like the Xbox 360 as a super set-top box that can do everything the set-top box does, but then have the graphics to do the games as well.

Personally, I'd like to see more of our leaders take a technocratic approach to solving our biggest problems.

Rich countries can afford to overpay for things.

I'm truly saddened to learn of Steve Jobs' death. The world rarely sees someone who has had the profound impact Steve has had, the effects of which will be felt for many generations to come. For those of us lucky enough to get to work with him, it's been an insanely great honor. I will miss Steve immensely.

... No one is less happy than I am with the performance of Microsoft stock! I've lost tens of billions of dollars this year - if you check, you'll see that's more than most people make in a lifetime!