When is a theological debate more than a churchy quarrel? More than esoteric book reviewing? When the debate digs into underlying questions that involve the whole of man's search for the meaning of human life it becomes important. When, as in the case of the infallibility debate, it stretches the perimeters of the discussion to examine the possibility of truth and the shape of its possible expression, then it is important. When the debaters go beyond "point making" to make their own contributions to a conversation that is just beginning then it is important. When the contributors are contributors are among the most insightful and provocative of today's theologians, then the debate is worth its time and space.Gregory Baum, Richard McBrien, Harry McSorley and George Lindbeck attempt in this book to do all these things, to make it important.