intellect’, intellectus agens or intellectus factivus. Aristotle also refers to one aspect as separable and the other as not separable. Aquinas believed there were two serious mistakes in the Averroist interpretation of this. One was the idea that the possible intellect is a substance that is separate in its being from the body even though united to it as its form, a kind of Platonist view that would destroy the unity of body and soul that Aquinas was so keen to defend. The other was the view, apparently