Dietrich Bonhoeffer is one of the best know Christians of the twentieth century. His death at the hands of the Nazis is an extraordinary tale of courage and Christian discipleship. But Bonhoeffer was also a serious theologian. He wrote and thought with an unparalleled independence of mind, creativity and brilliance. But it is as an ethicist that Bonhoeffer's virtuosity is most evident. How Christians live their lives in the world is a constant theme of his work, from his doctoral thesis on the Church, to his prison letters about "Jesus the man for other," Bonhoeffer's constant theme is ethics. Here, Stephen Plant introduces Bonhoeffer's work to an unfamiliar audience. He assesses Bonhoeffer against the harsh challenge of contemporary life: Does his theology make sense? What difference does his theology make to me? Is his ethic one which I can live by?