Windows is probably the most important product in the entire PC industry. Everything we do in terms of supporting touch, new hardware, accessibility has incredible impact.

Philanthropy should be voluntary.

One thing I've always loved about the culture at Microsoft is there is nobody who is tougher on us, in terms of what we need to learn and do better, than the people in the company itself. You can walk down these halls, and they'll tell you, 'We need to do usability better, push this or that frontier.'

No one person controls Microsoft. The board and the shareholders decide whether they want to have me as CEO.

You're never going to get the amount of CO2 emitted to go down unless you deal with the one magic metric, which is CO2 per kilowatt-hour.

There are GMO skeptics more in Europe maybe than in other places, but not exclusively.

Microsoft is not about greed. It's about innovation and fairness.