Gratian's Tractatus de penitentia: A New Latin Edition with English Translation - Paperbackby Atria A. Larson (Author) Gratian's Decretum is one of the major works in European history, a text that in many ways launched the field of canon law. In this new volume, Atria Larson presents to students and scholars alike a critical edition of De penitentia (Decretum C. 33 q. 3), the foundational text on penance, both for canon law and for theology, of the twelfth century. This edition takes into account recent manuscript discoveries and research