Even if we didn't have greenhouse gases, were going to have to move away from fossil fuels, as we're going to run out. They're finite, whereas solar and wind are infinite.

I made a lot of money. I earned a lot of money with CNN and satellite and cable television. And you can't really spend large sums of money, intelligently, on buying things. So I thought the best thing I could do was put some of that money back to work - making an investment in the future of humanity.

I'm a very good thinker, but I sometimes grab the wrong word. I say something I didn't think through adequately. I mean, I don't type my speeches, then sit up there and read them off the teleprompter, you know. I wing it.

John is very aware of the responsibilities that come with being a landowner. I also feel that way. We both see landownership as a personal investment, but also an opportunity to contribute to the well-being of our planet and its inhabitants.

Most of the people will have died and the rest of us will be cannibals.

Be sure to set your goals so high that you can't possibly accomplish them in one lifetime. That way you'll always have something ahead of you. I made the mistake of setting my goals too low, and now I'm having a hard time coming up with new ones.

Do something. Either lead, follow or get out of the way.