 Stephen Langton’s most important contribution to the development of the concept of synderesis occurs in his discussion of whether synderesis can merit or demerit. In the process of discussing this issue Stephen links synderesis to the practical syllogism, specifically associating it with the grasp of general principles (Quaestiones disputatae; Lottin ed. 1948: 113). D’Arcy sums up Langton’s position as follows: