8. C. (11) We come to the theory that this pneuma is an earlier form, one which on entering the cold and being tempered by it develops into soul by growing finer under that new condition. This is absurd at the start, since many living beings rise in warmth and have a soul that has been tempered by cold: still that is the theory- the soul has an earlier form, and develops its true nature by force of external accidents. Thus these teachers make the inferior precede the higher, and before that inferior they put something still lower, their "Habitude." It is obvious that the Intellectual-Principle is last and has sprung from the soul, for, if it were first of all, the order of the series must be, second the soul, then the nature-principle, and always the later inferior, as the system actually stands.
If they treat God as they do the Intellectual-Principle- as later, engendered and deriving intellection from without- soul and intellect and God may prove to have no existence: this would follow if a potentiality could not come to existence, or does not become actual, unless the corresponding actuality exists. And what could lead it onward if there were no separate being in previous actuality? Even on the absurd supposition that the potentially existent brings itself to actuality, it must be looking to some Term, and that must be no potentiality but actual.
No doubt the eternally self-identical may have potentiality and be self-led to self-realization, but even in this case the being considered as actualized is of higher order than the being considered as merely capable of actualization and moving towards a desired Term.
Thus the higher is the earlier, and it has a nature other than body, and it exists always in actuality: Intellectual-Principle and Soul precede Nature: thus, Soul does not stand at the level of pneuma or of body.
These arguments are sufficient in themselves, though many others have been framed, to show that the soul is not to be thought of as a body.