The essence of global health equity is the idea that something so precious as health might be viewed as a right.

What I can argue is that no one should have to die of a disease that is treatable.

We've taken on the major health problems of the poorest - tuberculosis, maternal mortality, AIDS, malaria - in four countries. We've scored some victories in the sense that we've cured or treated thousands and changed the discourse about what is possible.

I'm one of six kids, and the eight of us lived for over a decade in either a bus or a boat.

I've been impressed, over the last 15 years, with how often the somewhat conspiratorial comments of Haitian villagers have been proven to be correct when the historical record is probed carefully.

In an age of explosive development in the realm of medical technology, it is unnerving to find that the discoveries of Salk, Sabin, and even Pasteur remain irrelevant to much of humanity.

For me, an area of moral clarity is: you're in front of someone who's suffering and you have the tools at your disposal to alleviate that suffering or even eradicate it, and you act.