Tap into people's dignity and they will do anything for you. Ignore it, and they won't lift a finger.

Geopolitics is all about leverage. We cannot make ourselves safer abroad unless we change our behavior at home.

The thing you have to remember is, oil and gas are commodities, and the more we use them the more the price goes up, like any commodity. Solar, wind - they are technologies, so the more you use them, the more the price goes down.

If e-mail had been around before the telephone was invented, people would have said, 'Hey, forget e-mail! With this new telephone invention I can actually talk to people!'.

I could see America playing a slightly smaller role in the Middle East but I would not see us abandoning the region and just say "Oh," like I said, "China, Russia, it's yours now. Global focus is just on our hemisphere." I don't see that happening.

Communism was a great system for making people equally poor - in fact, there was no better system in the world for that than communism. Capitalism made people unequally rich.

I firmly believe that the next great breakthrough in bioscience could come from a 15-year-old who downloads the human genome in Egypt.