The single most surprising new element in America's national conversation is the prominence and intensity of constant fear. Moreover, there is an uncharacteristic and persistent confusion about the sources of that fear; we seem to be having unusual difficult distinguishing between illusory and legitimate ones.

Right now, 65 percent of the world’s households have no phone service. Half of the world’s population has never made a phone call. Iceland has more Internet hosts than all of Africa. Today, I challenge the business community to create a global business plan — to put data and voice telecommunication within an hour’s walk of everybody on the planet by the end of the next decade.

Tobacco addiction sinks its claws in deeply, it's just as powerful of sic an addiction as heroin or crack cocaine.

It is possible to speculate that a 'role requirement' of the President in the future might become 'visual communication.'

Although the earth is vast, its most vulnerable point is the atmosphere, which is surprisingly thin. As the late Carl Sagan used to say, it's like a coat of varnish on a globe.

[Critics have] lost the argument and they don’t want to stop dumping all this pollution into the Earth’s atmosphere. The only thing they have left is cash and now they’re offering cash for so-called skeptics who will try to confuse people about what the science really say. But it’s unethical because now the time has come when we have to act.

The warnings about global warming have been extremely clear for a long time. We are facing a global climate crisis. It is deepening. We are entering a period of consequences."

The good news about not being President is that I have my weekends free.

I want to testify today about what I believe is a planetary emergency - a crisis that threatens the survival of our civilization and the habitability of the Earth.

After marriage, husband and wife become two sides of a coin; they just can't face each other, but still they stay together.