Looking at these issues as a businessman, I believe that investing in the world's poorest people is the smartest way that our government spends money.

I think philanthropy is also growing and catching on. Figuring out how the philanthropy sector, which is quite small compared to the private sector, which is the biggest by far, and then the governments, you know, even in these poor countries over time has to take on these key responsibilities. How does philanthropy accelerate that? Drive the kind of innovations, make sure they get used well. So it plays this kind of special role.

Investing in innovation, which was my broad theme talking to [Warren Buffett ], that included health vaccines, it included energy and education.

I believe that if you show people the problems and you show them the solutions they will be moved to act.

Here at work we're all just trying to get a job done. My people have the confidence of their convictions and they know their skills. And that occupies most of my time.

I'm not a macroeconomics person.

It's pretty incredible to look back 30 years to when Microsoft was starting and realize how work has been transformed. We're finally getting close to what I call the digital workstyle.