In fact, that's where my vision of the coming digital opportunity is somewhat different from other people's. I divide it into three parts. One is the office. That's the one I'm most excited about and is the most concrete.

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.

We are always saying to ourself.. we have to innovate. We got to come up with that breakthrough... we're only paid for breakthroughs.

Melinda [Gates] has been my partner in raising the kids and I went from before I met her, intentionally having an unbalanced life, to having a more balanced life with all sorts of fun things that she and I do together.

Whenever you have multiple devices including multiple PCs that you want to share information with, it's always been a bit complicated.

Until we're educating every kid in a fantastic way, until every inner city is cleaned up, there is no shortage of things to do.

Certainly there's a phenomenon around open source. You know free software will be a vibrant area. There will be a lot of neat things that get done there.