I think it was really interesting to see how Malia and Sasha reacted. They were disappointed. They paid attention to what their mom said during the c… - Barack Obama

The problem is that this kind of vilification and over-the-top rhetoric closes the door to the possibility of compromise. It undermines democratic deliberation. It prevents learning –- since, after all, why should we listen to a “fascist,” or a “socialist,” or a “right-wing nut,” or a left-wing nut”?

It makes it nearly impossible for people who have legitimate but bridgeable differences to sit down at the same table and hash things out. It robs us of a rational and serious debate, the one we need to have about the very real and very big challenges facing this nation. It coarsens our culture, and at its worst, it can send signals to the most extreme elements of our society that perhaps violence is a justifiable response.

So what do we do? As I found out after a year in the White House, changing this type of politics is not easy. And part of what civility requires is that we recall the simple lesson most of us learned from our parents: Treat others as you would like to be treated, with courtesy and respect. (Applause.) But civility in this age also requires something more than just asking if we can’t just all get along.

As I said last year, each country will pursue a path rooted in the culture of its own people. Yet experience shows us that history is on the side of liberty, that the strongest foundation for human progress lies in open economies, open societies, and open governments. To put it simply, democracy, more than any other form of government, delivers for our citizens.

We cannot escape the prospect of nuclear war unless we all commit to stopping the spread of nuclear weapons and pursuing a world without them.