[Africa] is the one continent where you still have a lot more young people than old people. So making sure they're healthy, good nutrition, good education. That'll be important for the world.

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.

Ninety percent of the cases of polio are in security-vulnerable areas.

Drones overall will be more impactful than I think people recognize in positive ways to help society.

I have $100 billion... You realize I could spend $3 million a day, every day, for the next 100 years? And that's if I don't make another dime.

The general idea of the rich helping the poor, I think, is important.

If you’re a person struggling to eat and stay healthy you might have heard about Michael Jordan or Muhammad Ali, but you’ll never have heard of Bill Gates.