In the philanthropy game, you're going for different outcomes: saving childhood lives, having kids grow up - because they don't have malnutrition or disease - that they achieve their full potential. We take for Warren [Buffett] things that, because he's very intelligent about the world but doesn't get to go out in Africa and see what we see, we've taken and say to him where we stand and it's basically a very positive report that his gift has made a phenomenal difference.

Microsoft is involved in setting some fairly key standards and people are afraid of it because they think, Geez, they are quite capable. It's daunting, I suppose.

You've got to be willing to read other people's code, then write your own, then have other people review your code.

Software is more important than hardware.

I believe in generous aid policies.

... 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!

The trouble with energy farming is that the energy isn't always where you want to use it, and it isn't always when you want to use it.