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.

In 80% of the world, energy will be bought where it is economic. You have to help the rest of the world get energy at a reasonable price.

In most of these things our foundation is a co-funder, so I can say that a polio or an HIV vaccine, that I'm putting our resources behind it in a very big way and the U.S. government would be the best partner for those efforts.

Natural epidemics can be extremely large. Intentionally caused epidemics, bioterrorism, would be the largest of all.

Life is a lot more fun if you treat its challenges in creative ways.

Really advanced civilization is based on advances in energy.

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.