The two areas that are changing... are information technology and medical technology. Those are the things that the world will be very different 20 years from now than it is today.

I'm going to retain a lot of Microsoft's stock.

In poor countries, we still need better ways to measure the effectiveness of the many government workers providing health services. They are the crucial link bringing tools such as vaccines and education to the people who need them most. How well trained are they? Are they showing up to work?

I understand how every healthy child, every new road, puts a country on a better path, but instability and war will arise from time to time, and I'm not an expert on how you get out of those things.

I hope someday what people can do with their lives depends on their talents and how hard they are willing to work, rather than on where they happen to be born.

I've been very lucky, and therefore I owe it to try and reduce the inequity in the world. And that's kind of a religious belief. I mean, it's at least a moral belief.

The moral systems of religion, I think, are super important.