Embrace bad news to learn where you need the most improvement.

Rich countries can afford to overpay for things.

It's an experiment, and it's probably good to have a couple states try it out to see before you make that national policy.

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

Contraception really shouldn't be all that controversial because it's a tool a woman can use to delay her first birth until she's, say, 18 or 19 years old.

There were a lot of missteps in the early days, but because we got in early we got to make more mistakes than other people.

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.