Karl Barth (1886-1968) is generally acknowledged to be the most important European Protestant theologian of the twentieth century, a figure whose importance for Christian thought compares with that of Augustine, Thomas Aquinas, John Calvin, Martin Luther, and Friedrich Schleiermacher. Author of the Epistle to the Romans, the multi-volume Church Dogmatics, and a wide range of other works - theological, exegetical, historical, political, pastoral, and...