"...the valuable historiographical and methodological reflection provided in this volume makes it a must-read for anyone interested in canon law, theology, and church history in the eleventh and twelfth centuries". John Burden, in The Medieval Review 20.05.05 (2020). The full review is accessible at this link: https://scholarworks.iu.edu/journals/index.php/tmr/index. "Christof Rolker has edited an excellent volume of essays on research on canon law in the long twelfth century [...] this volume represents an important engagement and challenge to long-standing assumptions. Every scholar of law and the papacy in this period should consult the volume, and it should give sobriety and pause to those wishing to make a long-lasting mark on scholarship". Atria A. Larson, in Speculum 95/3, July 2020.