Can committed believers and committed non-believers share a common political life in the context of a secular state? Committed believers may want the policies of the state to reflect their deeply held religious convictions and values. Committed non-believers may not want the state imposing religiously inspired values in the absence of any purely secular justification. Must religion retreat from the public sphere or can religion find a place in the public sphere, even in a purely secular state? John and Ken welcome Robert Audi from the University of Notre Dame, author of Democratic Authority and the Separation of Church and State.