Summa Parisiensis

The Summa Parisiensis is an anonymous commentary, written around 1170, on the Decretum Gratiani, the twelfth-century compilation of canon law assembled by the jurist Gratian that became the foundational textbook of medieval church law. Rather than an independent legal code, it is a gloss that explains and interprets the text of Gratian passage by passage, in the scholarly tradition of the University of Paris from which it takes its name. Historians of canon law treat it as an important early witness to how the Decretum of Gratian was read and taught in the decades immediately after its compilation, during the formative period of Western legal scholarship.