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

By helping us to be more productive, technology lets us to spend less time focusing on survival, and more on solving other challenges.

If you're taking care of your family and society and are comfortable you can start to think about helping those most in need globally. That's how we became engaged in those things.

If you think of global public goods like polio eradication, the kind of risk-taking new approach, philanthropy really does have a role to play there, because government doesn't do R&D about new things naturally as much as it probably should, and so philanthropy's there.

I'll get to see many disease eradications. and we're seeing a lot of progress.

I think if you talk to the experts in any field where you have to take on a unknown challenge, where you're going to be working on it for a long time you'd find that to work themselves up to their best performance and really throw themselves into it, you know, spend all these hours in there and ah, give it their... give it their best that optimism plays a role.

Software was changing so fast, so unbelievable, that that got very quick adoption.