Martin Luther started a reformation movement that revolutionized Europe in the sixteenth century. His far-reaching reforms of theological understanding and church practices radically modified both church and society in Europe and beyond. Paulson's introduction to Luther's thought, coupled with the illustrations, provides an engaging introduction to Luther's multifaceted self and the ideas that catapulted him to fame. Written by experts but designed for the nonexpert, the Armchair Theologian series from Westminster John Knox Press provides accurate, concise, and witty overviews of some of the most profound Christian theologians in history. This series is an essential supplement for first-time encounters with primary texts, a lucid refresher for scholars and clergy, and an enjoyable read for the theologically curious.