We're all responsible for creating a polio-free world while we still can.

The main thing that's missing in energy is an incentive to create things that are zero-CO2-emitting and that have the right scale and reliability characteristics.

By 2018, an estimated 63 percent of all new U.S. jobs will require workers with an education beyond high school. For our young people to get those jobs, they first need to graduate from high school ready to start a postsecondary education.

Anything you do, you better enjoy it for its value. Because people are going to second-guess everything you do.

We will never make a 32-bit operating system.

The U.S. and Canada are two generous governments and we reach out and partner with anyone who believes in foreign aid.

Is the rich world aware of how four billion of the six billion live? If we were aware, we would want to help out, we'd want to get involved.