Some perennial problems concerning the “immortality of the soul” will be presented and discussed; this time on the basis of the writings of Thomas of Aquinas.
What interests us most is the role a particular category plays in respect to the question of “body and soul”. As we all know Aquinas puts forward the view that that a soul, because of its "incorruptibility", has the capacity to exist apart from a body ( seems to be “existent” after the body’s death). Now, does this mean that for Aquinas the soul is a substance? Does the soul “interact” with the body as second substance? Not really! To regard Aquinas as substance dualist neglects the Aristotelian roots of Aquinas’ views. Thomas of Aquinas appealed to Aristotle's De anima as support of his view of body and soul. We will however see that the alledged support comes rather from the interpretation of De anima by the Baghdad school of philosophy. We will therefore not only concern ourselves with Aquinas view in relation to Aristotle but will also compare Aristotle's writings and their interpretation by Averroes and Avicenna.