'Keith Johnson's study of the debate between Karl Barth and Roman Catholicism over the issue of analogia entis is first-rate historical theology. Carefully researched, balanced in judgment, and clearly written, it helps fill a gap in scholarly literature on Barth's remarkable relationship with Roman Catholic theology and opens numerous doors for future research.' - Daniel L. Migliore, Princeton Theological Seminary, Princeton, NJ, USA 'Johnson has written an excellent book, offering a lucid analysis of Barth 's lifelong engagement with the /analogia entis/, an engagement often referenced but seldom understood. In the course of this work, he carefully exposits and evaluates not only Barth's approach to the topic, but also its relation to the approaches of his key conversation partners - Przywara, Sohngen, and Balthasar. The result is at once fascinating and compelling, and establishes Johnson as a theologian of the _first order.' - Paul T Nimmo, Meldrum Lecturer in Theology, New College, University of Edinburgh, UK 'Careful historical research, a stimulating and well-defined interpretative agenda, and a willingness to venture bold, yet nuanced, theological judgments distinguish this timely and impressive book. Scholars interested in the development of Barth's thought and the difficult question of Barth's relationship to twentieth-century Roman Catholic theology will gain much from it.' -Paul Dafydd Jones, Department of Religious Studies, University of Virginia, USA