Eric Leland Saak is Professor of History at Indiana University-Purdue University, Indianapolis. He has previously served as Head of the Department of Theology, Philosophy, and Religious Studies at Liverpool Hope University (2010-12), and worked for the Netherlands Research School for Medieval Studies (1994-2000). Trained by the late Heiko A. Oberman, and a Fulbright Scholar at the University of Tübingen, Saak's numerous publications include High Way to Heaven: The Augustinian Platform between Reform and Reformation, 1292-1524 (2002) and Creating Augustine: Interpreting Augustine and Augustinianism in the Later Middle Ages (2012). He also co-edited and contributed to The Oxford Guide to the Historical Reception of Augustine (2013).

'This is a learned and tightly written work which shows a panoramic mastery of medieval sources and of Luther's developing theology, situated firmly in the theological context of the later Middle Ages. Original language texts are provided in the footnotes for Saak's translations. These, with the extensive bibliography, make this a solid resource for scholars.' Donald K. McKim, Journal of Ecclesiastical History

• Introduction; 1. The Reformation of the later Middle Ages; 2. Seeking God's mercy: living the Augustinian life; 3. Discoveries and breakthroughs; 4. Luther's ways of thought; 5. Brother Martin, Augustinian; 6. Mother Church and the Pope; 7. The woe of the world: Luther from Friar to Reformer; 8. The failure of the Reformation.

Eric Leland Saak is Professor of History at Indiana University-Purdue University, Indianapolis. He has previously served as Head of the Department of Theology, Philosophy, and Religious Studies at Liverpool Hope University (2010-12), and worked for the Netherlands Research School for Medieval Studies (1994-2000). Trained by the late Heiko A. Oberman, and a Fulbright Scholar at the University of Tübingen, Saak's numerous publications include High Way to Heaven: The Augustinian Platform between Reform and Reformation, 1292-1524 (2002) and Creating Augustine: Interpreting Augustine and Augustinianism in the Later Middle Ages (2012). He also co-edited and contributed to The Oxford Guide to the Historical Reception of Augustine (2013).

'This is a learned and tightly written work which shows a panoramic mastery of medieval sources and of Luther's developing theology, situated firmly in the theological context of the later Middle Ages. Original language texts are provided in the footnotes for Saak's translations. These, with the extensive bibliography, make this a solid resource for scholars.' Donald K. McKim, Journal of Ecclesiastical History

• Introduction; 1. The Reformation of the later Middle Ages; 2. Seeking God's mercy: living the Augustinian life; 3. Discoveries and breakthroughs; 4. Luther's ways of thought; 5. Brother Martin, Augustinian; 6. Mother Church and the Pope; 7. The woe of the world: Luther from Friar to Reformer; 8. The failure of the Reformation.