When you program, you want to think you're writing the best possible program for the... for the task you're trying to solve.

With polio, we've gone several years with no polio in all of Africa, but now with this we're having to go and mop up in that whole region, so it's a bit of a setback for polio. So in parallel we have to go back and get rid of those cases.

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.

Exposure to the reproductions [of Corbis-owned fine art photographs] is likely to increase rather than diminish reverence for the real art and encourage more people to get out to museums and galleries.

I want to make clear that we respect the role of government in our legal andeconomic system.

So not only are we saving lives now, we're creating the incentive for the breakthroughs that over the next generation will mean we can take AIDS, malaria and TB and bring those numbers dramatically down.

We're creating this alliance, GAVI, that has helped buy the vaccines that were in the rich world but not getting to the poor kids, getting a very cheap price and figuring out the cold chain, getting the delivery right, and then funding research for new vaccines. A lot of them are coming along. We've got a meningitis vaccine out, got that through large parts of Africa. That has been a huge success.