I think Captain Cousteau might be the father of the environmental movement.

I don't measure success in numbers, but I consider my contributions of more than $1.3 billion to various causes over the years to be one of my proudest accomplishments and the best investment I've ever made. Those dollars have improved lives, saved species, fought disease, educated children, inspired change, challenged ideas and opened minds; at the time of my death, virtually all of my wealth will have gone to charity.

A total population of 250-300 million people, a 95% decline from present levels, would be ideal.

There's a fine line between being colorful and being an asshole, and I hope I'm still just colorful.

If you had the most prestige and you were the network that everybody turned to in times of a crisis, that that was the most important position, in the news business, to hold.

We'll be eight degrees hotter in ten -- not ten, but thirty or forty years, and basically none of the crops will grow. Most of the people will have died and the rest of us will be cannibals.

It was okay for people to write negative things about me just as long as they spelled my name right.