Watch excerpts from our interview about 9/11 with Nicholas Wolterstorff, the Noah Porter Professor Emeritus of Philosophical Theology at Yale University and a senior fellow at the Institute for Advanced Studies in Culture at the University of Virginia. He gave the keynote lecture at a recent conference on "Liberty and Tolerance in an Age of Religious Conflict" commemorating the 10th anniversary of the 9/11 terrorist attacks, and he spoke with Religion & Ethics NewsWeekly about religious tolerance, justice, Muslim-Christian relations, and living in a state of perpetual war. Watch our story on the 10th anniversary of the September 11 terrorist attacks: www.pbs.org/wnet/religionandethics/episodes/september-9-2011/911-then-and-now/9480/ --- Religion & Ethics NewsWeekly www.pbs.org/religion