Archbishop Emeritus Desmond Mpilo Tutu was awarded the 1984 Nobel Peace Prize for his contribution to the cause of racial justice in South Africa. He served as the first black African archbishop of Cape Town from 1986 to 1996. Prior to this role as spiritual leader of the Anglican Church in South Africa, Tutu served as General Secretary of the South African Council of Churches from 1978 to 1985. It was in this position that he became an international voice for the anti-apartheid movement and received the Nobel Prize. In 1995, South African President Nelson Mandela appointed Archbishop Tutu Chair of South Africa’s Truth and Reconciliation Commission, the body set up to investigate human rights violations under that country’s apartheid governments from 1960 to 1994. Tutu retired from in 1996 and was given the honorary title of Archbishop Emeritus. Since then, Archbishop Tutu served as a visiting professor and scholar at the Candler School of Theology at Emory University in Atlanta, the Episcopal Divinity School in Cambridge, Massachusetts and the University of North Florida in Jacksonville. He has received numerous awards and has authored two books, No Future Without Forgiveness and God has a Dream. Tutu continues to write, lecture, and travel the world as an advocate of human rights and social justice. He is currently involved with a number of non-profit organizations working for peace and equality, meeting the needs of disadvantaged children and fighting HIV/AIDS.

Bishop T.D. Jakes is the pastor of The Potter's House, a 30,000 member nondenominational church in Dallas, Texas.

Susan Jacoby is the author of The Age of American Unreason. She began her writing career as a reporter for The Washington Post, and has been a contributor to a wide range of periodicals and newspapers for more than 25 years on topics including law, religion, medicine, aging, women's rights, political dissent in the Soviet Union and Russian literature. Jacoby has been the recipient of grants from the Guggenheim, Rockefeller and Ford Foundations, as well as the National Endowment for the Humanities. In 2001-2002, she was named a fellow at the Center for Scholars and Writers at the New York Public Library. Jacoby’s other books include Freethinkers: A History of American Secularism (2004); Wild Justice: The Evolution of Revenge, a Pulitzer Prize finalist in 1984, and Half-Jew: A Daughter's Search for Her Family's Buried Past. She is working on a book about the relationship between American anti-intellectualism and political polarization, to be published by Pantheon in 2008. Her photo is by Chris Ramir.

"On Faith" panelist Deepak Chopra is the author of more than fifty books translated into over thirty-five languages, including numerous New York Times bestsellers in both the fiction and nonfiction categories. His latest is "The Third Jesus: The Christ We Cannot Ignore." Chopra’s Wellness Radio airs weekly on Sirius Satellite Stars, Channel 102, which focuses on the areas of success, love, sexuality and relationships, well-being, and spirituality. He is founder and president of the Alliance for a New Humanity. Time magazine heralds Deepak Chopra as one of the top 100 heroes and icons of the century and credits him as “the poet-prophet of alternative medicine.