China and the U.S. need each other very badly. Yes, we should argue about some things, but it's not an 'us versus them,' it's an 'us and them' type scenario.

When you want to do your homework, fill out your tax return, or see all the choices for a trip you want to take, you need a full-size screen.

Hopefully, whether it's energy or child vaccines, the case of the many benefits helping countries so that they are stable, so these refugee problems that have been troubling for Europe - a little less so for the U.S. but, even so, a lot of controversy there - these things are why the future's going to be better than the past. People really do look to the United States, so we'll be there making the case.

Often you have to rely on intuition.

Microsoft's only factory asset is the human imagination.

Countries which receive aid do graduate. Within a generation, Korea went from being a big recipient to being a big aid donor. China used to get quite a bit of aid; now it's aid-neutral.

I understand how every healthy child, every new road, puts a country on a better path, but instability and war will arise from time to time, and I'm not an expert on how you get out of those things.