Software is different than other products um, partly because it's, it's not physical and, and partly because of its complexity. You can express in software millions of different cases and making sure that you handle all of them correctly is extremely difficult.

Never before in history has innovation offered promise of so much to so many in so short a time.

In the next 15 years, we can halve childhood deaths. That's doable.

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.

India has over 20 percent of the kids born in the world. And they move around a lot.

Two out of every five people on Earth today owe their lives to the higher crop outputs that fertilizer has made possible.

If you are low income in the United States, you have a higher chance of going to jail than getting a 4-year degree.