Places where one can experience some of that separation from the world of the familiar, to defamiliarize ourselves with what we take for granted and enter into the ebb and flow of another culture, it certainly is one of the more valuable things that we do as human beings.

There's still plenty of people who have this deep conviction that America is a Christian country and ought to say so in its Constitution, etc. But that's not the legal basis on which we're framed. So the flourishing of religion, of religious diversity, is really built into who we are.

I do think that the U.S. has an opportunity as a democracy to really exemplify what a religiously diverse society can be when it embraces the pluralism.

When immigrants come, the freedom to practice their faith is a guarantee. They may have trouble with their neighbors, but freedom of religion is part of the blueprint for America, and that is the recipe for the religious diversity that we have today.

The issue of "who we are" has been an ongoing one. It's part of the ongoing identity crisis of America.

Those are big challenges in our age, not just how we live as co-citizens in societies with people of different faiths and different cultures - I mean, that's a big challenge itself - but how we think about all that as Christians, or as Jews, or as Muslims, or as Hindus. How do we think about the religious other? There's a theological dimension as well as a civic dimension to our pluralism.

Some of my best friends are Hindu or Buddhist or Sikh, my students as well. This is the sea in which I swim.