I've always tried to do the smartest and best thing.

We won't be signing off until the world ends. We'll be on, and we will cover the end of the world, live, and that will be our last event . . . we'll play 'Nearer, My God, to Thee' before we sign off.

Once you decide to do something, and you're pretty sure you're right, then you gotta go ahead and do it. Because if you piddle around, somebody else will beat you to it.

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.

I'd like to say that right now, in the last few years, the Democrats have been closer - have been more pro-environment. The coal industry is pretty well entrenched in the Republican Party and that's one of the things that we need to phase out.

To succeed you have to be innovative.

I fantasize about everything; being a fireman, an Indian chief, climbing mountains. Anything is possible.