I meet almost no one that goes to an African-American church or thinks, "I'm going to do that." Now there are whites in African-American churches. They're interracially married. They're highly committed. Maybe there's a professor or two, or a student.

There are roles that are terrifying because they're large or you may feel that they're out of your line, but I'm never terrified once the actual work begins. Once you begin rehearsal, then it's small building blocks. It's solving little problems one at a time.

In part because they had no choice, right? If you were a slave, you did what the master said. And they said to worship: "You're going to worship with us."

We go where our family goes. We go where our friends are, and because our social networks are so segregated by race, we end up with what we have. We also find that, you know, if you're immigrants, you're not part of that history.

So one of the profound things we found when studying these congregations, the mixed ones, is just how much overlap and interracial ties that develop not only with the people in the congregation, but they start meeting each other's families, and their friends, and they go to each other's neighborhoods if they live in different neighborhoods, and at work they meet people they wouldn't otherwise met, and so it creates a whole new definition of what the group is.

It may be changing, but still it's the one place, that total control of an institution, that African Americans have. So sometimes, you know, you'll hear the statement of African Americans saying, "I have to work with whites.

I spent a lot of time developing in books why worshipping separately actually impacts inequality, economic, social, on and on. So I really do believe there are huge advantages to being together even though it's difficult, even though we have a lot to learn.