If you don't have an ethic of conservation, you basically have a license to drive a Hummer through the Amazon.

You take one bomber and deploy him in Baghdad, and another is manufactured in Riyadh the next day. It's exactly like when you take the toy off the shelf at Wal-Mart and another is made in Shen Zhen the next day.

We're going in the wrong direction and I think the only way to counter that is to bring the story home in really concrete ways to people - in ways that kids can understand and non-scientists can understand.

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 love America. I think it's the best country in the world. But I also think we're not tending to our sauce.

I think there are different kinds of elites. I think there are venal elites, and self-interested elites, and selfish elites, and I think there are visionary elites.

Do you know what my favorite renewable fuel is? An ecosystem for innovation.