The machines need to get faster. They need to get cheaper.

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.

We're all responsible for creating a polio-free world while we still can.

Take our 20 best people away, and I will tell you that Microsoft will become an unimportant company

The human body is the most complex system ever created. The more we learn about it, the more appreciation we have about what a rich system it is.

This is not about trade, no one is a stronger supporter of capitalism and trade than I am. This is about sovereignty and whether a country has the right to set its own public health policies.

Online education is pretty special for two reasons. One is that you can get the very best lecture in the world and wherever you are, whenever you want, you can connect to that lecture. The other is this interactivity, where if you know a topic, you can kind of skip over it. Or if you're confused about it, [the area] where you're confused can be analyzed by software.