This book investigates how early medieval monks transitioned from secluded figures to architects of moral authority within the post-Roman West. Conrad Leyser, a scholar of medieval history, challenges the traditional narrative that monasticism was a retreat from the world. By analyzing the writings of figures from Augustine to Gregory the Great, he argues that these individuals actively constructed a new language of power and social influence that shaped the medieval Church.

Historians and theologians frequently cite this work as a significant contribution to the study of early medieval ecclesiastical power structures. Scholars often note the depth of Leyser's research and his ability to reframe the role of the monk in the transition from antiquity to the Middle Ages.