Before you were born, your parents weren't as boring as they are now. They got that way from paying your bills, cleaning your clothes and listening to you talk about how cool you thought you were. So before you save the rain forest from the parasites of your parent's generation, try delousing the closet in your own room.

Microsoft has some assets like Office that have stayed strong and there's so much room for innovation in those.

Scientists and companies weren't creating things like new vaccines. Now that we have this fund that's there to buy at the lowest price, but buy for those people these medicines, we see scientists everywhere coming up with those new tools.

A company's ability to respond to an unplanned event, good or bad is a prime indicator of its ability to compete.

This [philanthropy] work is even more fascinating. It requires us to think harder about how we build partnerships, who we get behind. And yet we get to see progress that in some ways is even more profound than the great advances that digital technology has provided.

It's really kind of cool to have solar panels on your roof.

The ideal thing would be to have a 100 percent effective AIDS vaccine. And to have broad usage of that vaccine. That would literally break the epidemic.