The idea that the United States government would have to figure out what to do about the headscarf is simply ludicrous. We don't get involved in that.

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.

My first intellectual challenge was to try to understand this incredible city of Banaras (also called Varanasi) in India and its meaning for Hindus. That was the place I lived for the first year I was in India and I've been back many times. It's a kind of home to me.

We tend to gravitate towards our tribes; the challenge is to understand the people of other tribes.

My whole worldview has changed because of the work that I do. Specifically, the way in which I appropriate my own faith as a Christian, and the way in which I think about the faith and life of others who are very different than myself. That mutuality of regard is how we deal with difference and diversity in the world.

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.

The journey to sacred places is the most common way that people travel in India. They are always going on pilgrimages to sacred places. They are always undertaking spiritual journeys to visit the great shrines in the Himalayan tier of pilgrimage places; these places are called tirthas, a word that means "crossing place," a place where you can cross the river to the far shore but also cross over into another dimension of life. Cross over to heaven, in one sense it's used.