We can make market forces work better for the poor if we can develop a more creative capitalism-if we can stretch the reach of market forces so that more people can make a profit, or at least make a living, serving people who are suffering from the worst inequities. ... You have more than we had; you must start sooner, and carry on longer.

I have a particular relationship with Vinod Khosla because he's got a lot of very interesting science-based energy startups.

The world has been very careful to pick very few diseases for eradication, because it is very tough.

When you have a fortune that is almost hard to imagine, the best thing is not to pass that on to one's children. That distorts their life situation.

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 has had many, many successful products. I'm committed to one company. This is the industry I've decided to work in.

China is certainly an important player in the global economy, and a widespread AIDS epidemic would threaten that growth.