The PC has improved the world in just about every area you can think of. Amazing developments in communications, collaboration and efficiencies. New kinds of entertainment and social media. Access to information and the ability to give a voice people who would never have been heard.

There's 20 companies that I have investments in - some batteries, some solar-thermal, one big nuclear thing. We need hundreds and hundreds of companies like that, so that in a 20-year time frame we really are starting to change the energy infrastructure.

The truth of Moore's law has made remarkable things possible. On the software side, I think natural user interfaces in all their forms are equally significant.

The year I was born, 1955, the first big disease-eradication program in the world was declared for malaria. After about a decade of work, they realized that, at least in the tropical areas, they did not have the tools to get it done.

U.K. companies are in very international and very competitive markets. If you look at PC penetration in the U.K., it is very similar to the United States market.

The nuclear industry has this amazing record, even equipment from generations one and two. But nuclear mishaps tend to come in these big events - Chernobyl, Three Mile Island, and now Fukushima - so it's more visible.

Employers have decided that having the breadth of knowledge that's associated with a four-year degree is often something they want to see in the people they give that job to.

The Green Revolution focused on the big three - maize, rice and wheat - and the Green Revolution did not adapt the big three to African conditions, other than South Africa, as much as they should have.

The fight against AIDS in China is already well underway. The Chinese government and other funders are providing major support, and they'll continue to bear primary responsibility for delivering prevention and treatment.

The common thread for everything I do is this idea of a Web-services architecture. What does that mean? It means taking components of software and systems and having them be self-describing, so that you can aim them, ask them what their capabilities are, and communicate with them using a standard protocol.

Now everyone takes it for granted that you can look up movie reviews, track locations, and order stuff online. I wish there was a way we could take it away from people for a day so they could remember what it was like without it.

People don't want lots and lots of single purpose devices. They do not want to have to learn how to set up something for photos, another thing for music, another thing for video.

Eradications are special. Zero is a magic number. You either do what it takes to get to zero and you're glad you did it; or you get close, give up and it goes back to where it was before, in which case you wasted all that credibility, activity, money that could have been applied to other things.

Windows is probably the most important product in the entire PC industry. Everything we do in terms of supporting touch, new hardware, accessibility has incredible impact.

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.

A first-generation fortune is the most likely to be given away, but once a fortune is inherited it's less likely that a very high percentage will go back to society.

People should just buy a CD and rip it. You are legal then.

People are using Windows PCs more than they watch TV now.

A first-generation fortune is the most likely to be given away, but once a fortune is inherited it's less likely that a very high percentage will go back to society.

Eventually, all companies are replaced.