The next most dangerous thing [after nuclear proliferation] is probably... global warming, and then, right behind that are overpopulation -- we need to get serious about family planning-and trying to alleviate poverty, to get clean, renewable energy, probably with solar panels to the billion and a half people in the world who don't have access to electricity.

When I got my statement in January, I was worth $2.2 billion. Then I got another statement in August that said I was worth $3.2 billion. So I figure it's only nine months' earnings, who cares?

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.

Men should be disqualified for public office. Women should run the planet. They're better than us.

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

If I had to predict, the way things are going, I'd say the chances are about 50-50 that humanity will be extinct or nearly extinct within 50 years. Weapons of mass destruction, disease, I mean this global warming is scaring the living daylights out of me.

To be happy in this world, first you need a cell phone and then you need an airplane. Then you're truly wireless.