Well I didn’t feel like posting the full hundred or so pages of the argument - but I shall give a distillation;
a) A general bodily ressurection must be based upon something that is proper to man and not belonging to other perishibles
b) Neither is it to be, if it is proof - a form that is destroyable
c) In this capacity, even excellence of a brute would not be adequate; hence the proof
must reside in some form that is specific to man or upon some operation by which man enjoys reason of this form.
d) The proposed conclusions are;
i) The intellective soul is the specific form of man,
ii) The intellective soul is incorruptible,
iii) The specific form of man will remain forever outside the composite.
Then;
- Taking Aristotles Definition of the soul as* an act of the natural organised body (de anima)* he speaks of the differentiae of intellection within this species. (which is a distinctio intentionalis); that of this composite the intellective capacity is considered a subject or part.
- Meaning, by Rational - that the intellective soul is an essential part of man.
This is because Man formally and properly understands, therefore the intellective soul is the proper form of man.
a) The antecedent is proven thus; that it seems to be clear enough according to Aristoles
De anima &
Nicomachean Ethics since to understand is the proper operation of man. Now an operation, in contradistinction to an act of fashioning something or to an action, is formally in the one who perfoms the operation and is not produced by the agent in something else. Similarily, Aristotle in
Nicomachean Ethics makes mans happiness consist in understanding. Now it is clear that this felicity is formally in man. Consequentlt the operation in which this felicity consist must also be in man formally.
b) Nevertheless, the antecedent sould be further proven with logic, lest some contentious individual deny it. I take “to know” or “to understand” in it’s proper sense of the term as an act of knowlege which is trancendental to sense knowlege.
b1) This is proven by thus; Man knows by an act of knowlege which is not organiuc, hence he knows or understands properly. The consequence is evident for the reason already given - for the intellection properly speaking is a knowlege which transcends sense knowlege. All sensation however is organic knowlege, as Aristotle shows in
De anima - There the antecedenct of this enthymeme is proved from the fact that every organ is determined to a certain kind of sensible, and this because it consists in a balance between two extremes. But we do experience in ourselves some knowlege which we do not have in virtue of some organ, for if it were organic; this knowlege would be limited precisely to the sensibles of some determined kind - which is the very opposite of what we experience. For by such an act we know precisely how one kind of sensible differs froma nother, and by consequence we know both extremes.
b2) But to this some object, firstoff that organic knowlege is that which is present in some determinate part of the body wheras the aforesaid knowlege by which we distinguish sensibles from things that cannot be perceived by the senses is present in hte body aas a whole and for this reason is not had in vitrue of some organ in the proper sense of the word. For an attribute of the whole is as material as something which exists in one of its parts. Nevertheless this knowlege does not transcend in perfection the whole species of sense knowlege since it is just as material in character as the knowlege in only a part of the whole. Secondly, they deny the assumption that this act of knowlege is not present in virtue of some organ because it is there by reason of the organ of the imagination. Proof fro this is found that when this organ is damaged, such knowlege is no longer possible. Neither is the proof from the limitation of the organ to a certain sensible conclusive, because the inagination extends to all sensibles.
2) The second proof of the antecedent is that no sense knowlege can be immaterial etc.
And so on.