Durandus of Saint-Pourçain’s doctrine of the soul and its faculties is paradigmatic for a philosophical psychology at the turn from High to Late Middle Ages. For, on the one hand, Durandus discusses and adopts many peculiarities of 13th-century doctrines of the soul; on the other hand, Durandus’s doctrine of the soul is much more in line with late 14th-century positions. Even if he treats the theories of Thomas Aquinas, John Duns Scotus or Henry of Ghent and partly adopts their views, he nevertheless develops an independent theory, which is not only coherent in itself, but has many characteristics of later theories (for example, of Gregory of Rimini or Gabriel Biel). See inside the book.