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.

When you have the medical advances you think will they be available to everyone. Will they not just be for the rich world or even just the rich people and the rich world? Will they be for the world at large?

We got a malaria initiative, really a phenomenal time, even though in the early stages there was some uncertainty. Then of course [Barack] Obama, although he had budget constraints, he believed in these things; a lot of new initiatives, including in agriculture.

Talking to mothers, always brings it home because they're so anxious to do everything they can for their kids and so tragic for them.

It was really phenomenal [Warren Buffett donation]. It grew out of the friendship that we had and the fact that his plan to have his wife run the foundation and give things away changed when she tragically died.

The Global Fund is a central player in the progress being achieved on HIV, TB and malaria. It channels resources to help countries fight these diseases. I believe in its impact because I have seen it firsthand.

Only a few businesses will succeed by having the lowest price, so most will need a strategy that includes customer services.