It's pretty amazing to go from a world where computers were unheard of and very complex to where they're a tool of everyday life.

The two areas that are changing... are information technology and medical technology. Those are the things that the world will be very different 20 years from now than it is today.

Measles will always show you if someone isn't doing a good job on vaccinations. Kids will start dying of measles.

Microsoft Research has a thing called the Sense Cam that, as you walk around, it's taking photos all the time. And the software will filter and find the ones that are interesting without having to think, 'Let's get out the camera and get that shot.' You just have that, and software helps you pick what you want.

I remember thinking quite logically that I didn't want to spoil my children with wealth and so that I would create a foundation, but not knowing exactly what it would focus on.

I think when smallpox was eliminated, the whole world got pretty excited about that because it’s just such a dramatic success.

With the states release today of a set of clear and consistent academic standards, our nation is one step closer to supporting effective teaching in every classroom, charting a path to college and careers for all students, and developing the tools to help all children stay motivated and engaged in their own education. The more states that adopt these college and career based standards, the closer we will be to sharing innovation across state borders and becoming more competitive as a country.