I remember in 1980 or 1981 looking at a list of people who had made a lot of money in the computer industry and thinking, Wow, that's amazing. But I never thought I'd be on that list. It's clear I was wrong. I'm on the list, at least temporarily.

Vaccination is one of the easiest things on the way to development. It's much easier than roads and a great education system. It's very basic. It's one of the first things you want to get right.

We are in the throes of a transition where every publication has to think of their digital strategy.

Africa is on the rise.

Innovation is a good thing. The human condition - put aside bioterrorism and a few footnotes - is improving because of innovation.

Microsoft has had many, many successful products. I'm committed to one company. This is the industry I've decided to work in.

In the next 15 years, we can halve childhood deaths. That's doable.