There is a difference between what technology enables and what historical business practices enable.

The next time someone tells you we can trim the budget by cutting aid, I hope you will ask whether it will come at the cost of more people dying.

I'm never fully satisfied with any Microsoft product.

We need to cooperate globally on epidemic preparedness and prevention in the same way we are cooperating globally to stop people from getting nuclear weapons.

The general idea of the rich helping the poor, I think, is important. That your sense of justice says, why should rich kids - who barely get these diseases and almost never die of them - why should they get the vaccines, when poor kids, who actually do die from these diseases, don't get those things? It's an unbelievable inequity that there isn't that access.

India has over 20 percent of the kids born in the world. And they move around a lot.

People are building the software and so having the pieces be such that a single person understands all the tradeoffs and everything that's going on in a piece is extremely valuable. It avoids getting into an experimental mode where you're just trying things out. That never works.