Aquinas and Radical Orthodoxy investigates the encounter of the most vibrant and controversial trend in recent theology with the greatest Christian thinker of the Middle Ages. The book describes Radical Orthodoxy’s orientation and highlights those anti-secular strategies and intellectual influences that have shaped its appeal to Aquinas. It surveys the emergence of the particular picture of Aquinas especially associated with the leaders of Radical Orthodoxy, John Milbank and his student Catherine Pickstock, along with the scholarly disputes which prompted and followed that development. The book then undertakes a detailed investigation of the pivotal publications on Aquinas of those two authors, laying out their difficult theories in clear language, carefully examining the texts of Aquinas to which they appeal, and challenging their interpretations on a number of fundamental points. Topics covered include: analogical language and knowledge of God, the role of metaphysics within theology, the relation of cognition to the divine archetypes of things, the possibility of human apprehension of God’s essence, the nature of substance, and speculation on the Trinity. The conclusion reflects on those elements suppressed by the Radical Orthodox reading of Aquinas, their constructive philosophical and theological possibilities, and the challenges they present to the Radical Orthodox project.