He has taught History and Politics at Princeton, Cambridge, and Northwestern, and has given talks at Oxford, Cambridge, Princeton, Trinity College Dublin, Notre Dame, Villanova, and Northwestern. His research concerns the history of political and ecclesiastical thought, and he is currently working on a book concerning Catholicism and the American Founding. Dr. Breidenbach obtained his Ph.D. from King’s College, Cambridge, as an ISI Weaver, Salvatori, and Western Civilization Fellow. He holds a master’s degree with distinction from Cambridge and a BA, magna cum laude and Phi Beta Kappa, from Northwestern.