Professor Mark J. Clark is a distinguished senior fellow at The Gibbons Institute and the John C. and Gertrude P. Hubbard Chair of Medieval Church History and Theology at The Catholic University of America. He is currently revising views of Scholasticism and Scholastic theology that have been in place for three centuries at least. Among other things, he has discovered that Peter Lombard’s Sentences did not mark the transition away from the traditional biblical theology to the systematic theology that became dominant. Peter Lombard was in fact a traditional biblical theologian, much like the Victorines he worked with including Andrew of St. Victor. It was instead Thomas Aquinas’s Summa theologiae that initiated that transition. This discovery will necessitate rethinking not only Scholasticism but the causes of the Reformation itself.