This book is quite simply, one of the most profound and important books of the 20th century. Dietrich Bonhoeffer lived a testimony of his thoughtful and engaging writers. Focusing on the most treasured part of Christ's teaching - the Sermon on the Mount with its call to discipleship, and on the grace of God and the sacrifice which that demands. // Viewed against the background of Nazi Germany, Bonhoeffer's book is striking enough. At the same time, it shares with many great Christian classics a quality of timelessness, so that it has spoken, and continues to speak powerfully, to the varied concerns of the contemporary world.