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.