Paul and I, we never thought that we would make much money out of the thing. We just loved writing software.

Considering their impact, you might expect mosquitoes to get more attention than they do. Sharks kill fewer than a dozen people every year, and in the U.S. they get a week dedicated to them on TV every year.

In 80% of the world, energy will be bought where it is economic. You have to help the rest of the world get energy at a reasonable price.

Sometimes we do get taken by surprise. For example, when the Internet came along, we had it as a fifth or sixth priority.

I went public too soon. Stay private as long as you can.

I do normal kind of contributions, particularly for people who are going over to Africa and help highlighting global health, and that's tended to be pretty bipartisan in nature because of the coalition there exists fortunately around these global health issues. But I don't think my backing, putting a lot of money into political contributions is a way I'm going to try and help improve the world.

If I only had two dollars left I would spend one dollar on PR.