 Stephen Langton (1155–1228), regent master of theology at Paris and later Archbishop of Canterbury, is important in the present context less for any systematic treatment of conscience—indeed Stephen scarcely touches on the issue at all—than for his somewhat scattered views on synderesis. The relevant treatment comes in Stephen’s Quaestiones disputatae of 1203–1205 in the context of his discussion on free decision (liberum arbitrium).