Coal is my worst nightmare.

Let me state what the official IPCC prediction is: Sea levels could go up as much as three-quarters of a meter in this century, but there is a reasonable probability it could be much higher than that.

If I were emperor of the world, I would put the pedal to the floor on energy efficiency and conservation for the next decade.

As the saying goes, the Stone Age did not end because we ran out of stones; we transitioned to better solutions. The same opportunity lies before us with energy efficiency and clean energy.

Occasionally, I would focus on a particular school project and become obsessed with, what seemed to my mother, to be trivial details instead of apportioning the time I spent on school work in a more efficient way.

Just refrigerator efficiency saves more energy than all that we're generating from renewables, excluding hydroelectric power... I cannot impress upon you how important energy efficiency is. It doesn't mean you eat lukewarm food and your beers are lukewarm. You can still have it; you just make a better thing

If there is a regulation that says you have to do something-whether it be putting in seat belts, catalytic converters, clean air for coal plants, clean water-the first tack that the lawyers use, among others things, and that companies use, is that it's going to drive the electricity bill up, drive the cost of cars up, drive everything up. It repeatedly has been demonstrated that once the engineers start thinking about it, it's actually far less than the original estimates. We should remember that when we hear this again, because you will hear it again.