If I only had a little humility, I would be perfect.

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.

There is no greater legacy that we can leave our children and grandchildren than a peaceful and safer world.

We must go through a natural revolution if we are to survive on earth. We need to change people's perceptions. If there's no environment, there's no human race. We are in a state of global denial.

When I started CNN, I made the decision to stay out of endorsing candidates, and let the doers make up their own minds about politics, that it wasn't going to come from me.

Basically we are chimpanzees with about two percent more intelligence and a little less hair.

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.