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

Back in the mid-1970s, we adopted some fairly ambitious goals to improve efficiency of our cars. What did we get? We got a tremendous boost in efficiency.

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

If we had continued making progress at the rate we were during the Carter administration, we would be free of oil imports from Saudi Arabia today.

Not wasting energy. It is the least sexy, but the single most important and always the least expensive. You would be very interested in a report by the McKinsey consulting firm that concluded that 40 percent of everything that we have to do to mitigate our emissions are net economic winners. They are cost effective and the most cost effective is not wasting energy. That's actually going to be the largest part of this whole journey, I believe - using less energy with the same beneficial results.

I am going to leave everything on the field. I am going everywhere, and I am going to listen to everybody.

All of the economic signals in the marketplace are essentially subsidizing the use of dirty fossil fuels and penalizing clean energy. There's really only one entity in society that can solve that problem, and that is government. And the air is a scarce resource.