 Although Stephen Langton was the first scholastic to touch on the issue of synderesis in any depth, it was Philip the Chancellor (ca. 1170–1237) who wrote the first treatise devoted to exploring the relationship between synderesis and conscience (Lottin 1948: 139–157). As chancellor of Notre Dame, Philip had the right to grant the license to teach in the theology faculty at Paris, and it was under his tenure that the Dominicans and the Franciscans acquired their chairs in theology: two for the former, and one for the latter. Although primarily an administrator, Philip was also a trained theologian. His most important work is the Summa de bono, which includes the treatise on conscience.