I am a very big fan of the nation, actually. In Cicero's time, there was this idea that although we were members of the whole world of human beings, we also needed to connect our imaginations to a smaller unit. The smaller unit was something we knew we could live or die for, as Cicero died for the Roman republic.

The humanities prepare students to be good citizens and help them understand a complicated, interlocking world. The humanities teach us critical thinking, how to analyze arguments, and how to imagine life from the point of view of someone unlike yourself.

There are no general-interest media that all of us can tap into. I'm not a good person to talk to about social media. I just avoid it. I'm suspicious also of the culture of venting. But the bigger question is, How can we in this media world have a genuine civic conversation? I mean, look at Franklin Roosevelt. He had these radio talks that all Americans listened to, and there was a common civic conversation that came out of it.

But the life that no longer trust another human being and no longer forms ties to the political community is not a human life any longer.

We really have to think about aging because women are living longer than men. More of the people who need care are women. A lot of them are living alone, with no one to care for them, or they're shunted into institutions. I would like to see a sensible aging policy more like what the Nordic countries have. They're cutting back those programs, but there you can still have in-home nursing care. You don't have to rely on your children. I personally don't want to be a burden on my daughter.

It's not as though there aren't many, many art works and many other cultures, but there was something special about the civic nature of the Greek theater. All the citizens stopped working. They came into these theaters. It wasn't like a Broadway theater where you sit in the dark and you expect to be passively entertained. You're in this theater, amphitheater, in bright sunlight looking at your fellow citizens, recognizing their faces, and thinking with them about the future of your city. I think very few cultures have had a theatrical tradition that is quite so civic.

With the rise of capitalism, it became more obvious that people pursue individual self-interest. The great nationalist in Italy, Giuseppe Mazzini, a wonderful philosopher, said that we need the nation. We need something that people can lean on, from which they can then reach out to the whole world. The idea of all humanity is too vague. It can't motivate human aspiration in a reliable way.