The outside perception and inside perception of Microsoft are so different. The view of Microsoft inside Microsoft is always kind of an underdog thing.

Ninety percent of the cases of polio are in security-vulnerable areas.

Some people read off of their Palms and Pocket PCs, but the real immersible reading experience takes a full-screen device.

...one of the most inventive forms of creative capitalism involves someone we all know very well. A few years ago, I was sitting in a bar here in Davos with Bono. Late at night, after a few drinks, he was on fire, talking about how we could get a percentage of each purchase from civic-minded companies to help change the world. He kept calling people, waking them up, and handing me the phone to show me the interest.

I believe innovation is the most powerful force for change in the world. People who are pessimistic about the future tend to extrapolate from the present in a straight line. But innovation fundamentally shifts the trajectory of development.

In order to deal with all the medical cost demands and other challenges in the U.S., as we look to raise that revenue, the rich will have to pay slightly more. That's quite clear.

Students deserve great teachers. And teachers deserve the support they need to become great.