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.

When we design our national R&D programs, we ought to ensure a place for the small, the new, and the cutting-edge.

On Earth, we still have a beautiful atmosphere that precisely maintains a thermally driven climatic system that shelters, shields and sustains our natural treasures.

Investing in industries and technology for the 21st century generates high-skilled, high-wage jobs for industries of the future.

We could never light another match, and if China continues to build one coal-fired power plant a week, we are doomed. China is going to have to have new technologies made available to it to stop this. They're not going to live in poverty.

I talk about reducing our dependence on foreign oil. If we're buying electricity from a solar-thermal plant in Tijuana, I'm not sure we should say that's evil. If we are buying wind power from Alberta, I don't have a huge objection to that.