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.'

Even with cameras being very cheap, one thing that researchers noticed was that you look really bad in a videoconference image because the lighting is bad and you get shadows and things.

The US spends more on energy R&D than all other countries put together, and I personally consider it quite inadequate. In fact, I would have said we should more than double it, if I thought the absorptive capacity could scale up and if it was actually possible to get to that level.

Learning from mistakes and constantly improving products is a key in all successful companies.

If something's expensive to develop, and somebody's not going to get paid, it won't get developed. So you decide: Do you want software to be written, or not?

In the same way that when the car got going, people thought it would be an electric car, people thought it would be a steam car.

The advance of technology is based on making it fit in so that you don't really even notice it, so it's part of everyday life.