There are more people dying of malaria than any specific cancer.

Success is a lousy teacher.

Some very poor countries run great vaccination systems, and some richer ones run terrible programs.

We're still missing about a dozen vaccines that will make a huge difference. For adults, we've got HIV and TB are still huge; for kids malaria is still killing a half million kids a year out of that 6 million. We probably need some vaccines, but we need a little more data to make sure we're getting the vaccines that will save the most lives.

Taking a look back, one big reqret is, I left Harvard with no real awareness of the awful inequities in the world. The appalling disparities of health and wealth and opportunity that condemned millions of people to the lives of despair. I learned a lot here at Harvard about new ideas and economics, and politics. I got great exposure to the advances being made in the sciences. But humanities greatest advances are not in its discoveries, but in how those discoveries are applied to reduce inequity.

It's easier to add things on to a PC than it's ever been before. It's one click, and boom, it comes down.

How fast a company can respond in an emergency is a measure of its corporate reflexes.