Instruct: Classify an Amazon review as either positive or negative.
Query: Excellent Book for Non-Catholic Theologians

This book is a MUST read for non-Catholic theologians only because it shows the development of thought in 20th century Catholicism. The Catholic Church remains the only or the most open-minded institution in Christendom. Kerr is a master in showing this side through his review of major theologians of the Twentieth century. Historians of Christianity would really appreciate his masterful treatment of ideas in this book. Yet he towers over other authors by comparing the thoughts and critiques of some non-Catholic theologians to Catholic ones. I loved the chapters on Henri de Lubac, Hans Kung, Karl Rahner and Yves Congar (all of them contributors to Vatican II). Particular note about Hans Urs von Balthasar shows this theologian's great perspective as well as John Paul II and Ratzinger. A wonderful volume for the daring reader.