The essays in this volume display how Catholicism understands the proper confluence between philosophy and theology, between human rationality and Christian faith, between the natural order and supernatural grace. To illustrate these points, the book draws on a long line of Christian thinkers: Origen, Augustine, Anselm, Aquinas and, in our own day, Fides et Ratio of John Paul II and the Regensburg Address of Benedict XVI. Catholic theology constantly incorporates fresh thinking and remains in lively conversation with an extensive variety of contemporary perspectives. This book displays how reciprocity and absorption has been characteristic of theology's past and must represent its future as well.