The great thing about a computer notebook is that no matter how much you stuff into it, it doesn't get bigger or heavier.

With nuclear weapons, you'd think you would probably stop after killing 100million. Smallpox won't stop. Because the population is naïve, and there are no real preparations. That, if it got out and spread, would be a larger number.

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.

The human body is the most complex system ever created. The more we learn about it, the more appreciation we have about what a rich system it is.

Technology is unlocking the innate compassion we have for our fellow human beings.

There is no doubt that as an economy grows in a great way like India has, that you have to step back and change your tax systems, because you start to get more disparities of wealth.

I was lucky to be involved and get to contribute to something that was important, which is empowering people with software.