For all these infectious diseases, the goal is to eventually get rid of them. And to do that we need to invent new tools, but nobody was doing that because there was no money to buy on behalf of the poorest, even the existing tools.

The more you learn, the more you have a framework that the knowledge fits into.

I actually thought that it would be a little confusing during the same period of your life to be in one meeting when you're trying to make money, and then go to another meeting where you're giving it away. I mean is it gonna erode your ability, you know, to make money? Are you gonna somehow get confused about what you're trying to do?

But the improvements will happen faster and last longer if we can channel market forces, including innovation that's tailored to the needs of the poorest, to complement what governments and nonprofits do. We need a system that draws in innovators and businesses in a far better way than we do today.

Until recently, over 98 percent of teachers just got one word of feedback: Satisfactory. If all my bridge coach ever told me was that I was 'satisfactory,' I would have no hope of ever getting better.

The ability of a successful company to add functionality to its product has long been upheld.

I don't generally read a lot of fiction.