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.

In the U.S., we believe the best way to improve lives is to improve public education.

Vaccination is pretty special because you can do a vaccination campaign anywhere in the world. All you are doing is gathering women from the villages, getting them the vaccines and asking them to go around and find the children.

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 believe it’s not only possible to eradicate malaria; I believe it’s necessary. Ultimately, the cost of controlling it endlessly is not sustainable. The only way to stop this disease is to end it forever.

I'm cooler than you. WAAAY cooler.

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.