Introduction: the secularization of Western culture.--Reappraising the Christian witness.--Karl Barth.--Emil Brunner.--Rudolf Bultmann.--Reinhold Niebuhr.--Paul Tillich.--Dietrich Bonhoeffer.--John Robinson.--Harvey Cox.--Thomas Altizer.--Beyond apologetics: a restatement of the Christian witness.--Notes (p. 137-151)