We clearly need to break our addiction on Saudi Arabian oil that is a security threat to the United States.

A lot of people do not think of forests as a health issue, but we have found out that is where our clean water comes from, from the forests.

I'm sure that in the fullness of time we'll learn that one or more of these seemingly promising technologies were dead ends. And that's the nature of innovation, and that's why we should spread our bets; we should not put our eggs in any one basket. Some of these will be grand successes, some of them will be average, and some of them will be abject failures.

Tolerance is carved into the rostrum of the U.S. House of Representatives and intolerance should not be carved into the U.S. Constitution.

What is a fish without a river? What is a bird without a tree to nest in? What is an Endangered Species Act without any enforcement mechanism to ensure their habitat is protected? It is nothing.

We’re the first generation to feel the impact of climate change and the last generation that can do something about it.'

We need to do for clean energy what Kennedy did for space in the original Apollo Project: Set a bold vision that will light the fires of innovation and make a game-changing shift in how we use and produce energy. And nothing less is adequate.