Leadership is about vision and responsibility, not power.

Investments in immunization yield a rate of return on a par with educating our children - and higher than nearly any other development intervention.

Healthy children are more likely to attend school and are better able to learn. Healthy workers are more productive. More productive economies mean greater stability in developing countries and improved security in the West.

The best vaccine imaginable is only valuable to the extent we get it to everyone who needs it.

Leadership is about vision and responsibility, not power.

We've actually eliminated Type II polio in the world, at least as far as we can tell.

As many times as [HIV] changes its clothes, it's still wearing the same socks, and now our job is to make sure we get the body to really hate those socks.