REASON IS IN THE HEAD, BUT NOT IN THE BRAIN, WHICH IS THE SEAT OF THE INTERMEDIARY, THE POWER OF SENSATION.
On the other hand, as the power of sensation and the power of appetite, which belong to the sensible and imaginative soul, are beneath reason, because they are related to what is inferior, while reason is above,[136] the result was that the ancients localized reason in the highest part of the animal, in the head; not that reason is in the brain,[137] but because reason is seated in the sense-power, by the intermediation of which, only, reason may be said to reside in the brain. The sense-power, surely, had to be attributed to the body, and, within the body, to the organs most capable of lending themselves to its action. Reason, which has no (direct) dealing with the body, had however to be in relation with the sense-power, which is a form of the soul, and can participate in reason. The sense-power, does, to a certain extent, judge; and the power of imagination has something intellectual. Last, the appetite, and the desire somehow connect with imagination and reason. Reason, therefore, is in the head, not as in a locality, but because it is in relation with the sense-power which resides in that organ, as has been shown above.
GROWTH IS LOCALIZED IN THE LIVER, ANGER IN THE HEART.
As the power of growth, nutrition, and generation operates all through the entire body; and as it is by the blood that the body is nourished; as the blood is contained in the veins; and as the veins, as well as the blood, originate in the liver; this organ has been assigned as the seat of that part of the soul called appetite; for appetite is involved in the power of begetting, of feeding and increasing the body. Further as the blood (purified by respiration) is subtle, light, mobile and pure, the heart becomes a suitable instrument for the power of anger, for the blood that possesses these qualities starts from the heart. Therefore, with good reason, the heart is assigned as the seat of the turbulent convulsions of the power of anger.
F. WHERE GOES THE SOUL AFTER DEATH?
THE SOUL AFTER DEATH GOES TO THE PLACE SUITED TO IT BY RETRIBUTION.
24. Whither will the soul pass when she shall have left the body? She will not go where there is nothing suitable to receive her. She could not pass into what is not naturally disposed to receive her, unless there be something that would attract a soul that had lost her prudence. In this case, the soul remains in whatever is capable of receiving her, and follows it whither that (receptive matter) can exist and beget. Now as there are different places, it is necessary that the difference (of the dwellings in which the souls come to dwell) should be derived from the disposition of each soul, and of justice which reigns above beings. No one indeed could escape the punishment which unjust actions deserve. The divine law[138] is inevitable, and possesses the power of carrying out the judgments (according to its decrees). The man who is destined to undergo a punishment is, in spite of himself, dragged towards that punishment, and is driven around[139] by a movement that never stops. Then, as if wearied of struggling against things to which he desired to offer resistance, he betakes himself to the place that is suitable to him, and thus by a voluntary movement undergoes involuntary suffering. The law prescribes the greatness and duration of the punishment. Later, as a result of the harmony that directs everything in the universe, the end of the punishment endured by the soul coincides with the soul's receiving strength to leave those places.
PURE INCORPOREAL SOULS DWELL WITHIN INTELLIGENCE IN DIVINITY.
The souls that have a body thereby feel the corporeal punishments they are undergoing. Pure souls, however, that do not carry along with them anything corporeal, necessarily enjoy the privilege of abiding in the incorporeal. Being free from having to dwell in anything corporeal as they have no bodies, they reside where is being and essence, and the divine; that is, in the divinity. There, in the divinity, with the intelligible beings, dwells the pure Soul. If you wish to locate the Soul still more exactly, go to where are the intelligible entities; and if you are looking for them, do not look for them with the eyes, as if they were (physical) bodies.