People get tired of talking about American exceptionalism, but I think this is an extraordinary thing about the United States, that we are a nation of immigrants, first of all, that is built upon a pluralistic society of native people that were here to begin with. The issue of diversity is really with us from the beginning.

India is simply dotted with pilgrimage places, and with teachers and very powerful spiritual guides.

I was a young woman who had grown up in the mountains of Montana as a Protestant Methodist in a pretty good social gospel tradition. I became fascinated with the religious lives of others who seemed also to be very religious, yet in ways that were quite different from my own. That fascination led to relationships, in India and elsewhere, with families of Hindus, of Muslims, of Sikhs, and a lot of study.

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 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.

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.