_Reader._ This answer, doctor, is not altogether satisfactory. “The nerves,” of course, “do not perceive.” This I willingly admit; but neither does the brain perceive; for it is the soul that perceives. The nerves “merely call forth sensations by conducting the impressions received to the brain.” This cannot be denied; but it does not prove the non‐existence of the soul in the nervous system. Suppose that a pin or a thorn presses the finger; before the impression can be transmitted from the finger to the brain, its reception in the finger must give rise to a change of relation between the soul and the finger itself; which would be impossible, if the soul were not in the finger. For, if the soul is not in the finger, the impression made by the thorn will consist of a merely mechanical movement; and when this movement is communicated to the brain, what sensation can be called forth? A sensation of pain? No; for mere mechanical movement cannot produce a sense of pain, unless it is felt to disagree with the living organism. Now, the pricking is not felt to disagree with the brain, but with the finger. It is therefore in the finger and not in the brain that we feel the pain; which shows that the soul really is in the finger, and in every other part of the body in which we may experience any sensation. Your reason for pretending that “we do not feel pain in the place injured, but in the brain,” is quite unsatisfactory. It is true that if a nerve of sensation be divided in its course to the brain, all the parts which are supplied by it lose their sensibility; but what of that? Those parts lose their sensibility because they lose their sensitiveness; that is, because the cutting of the nerve, by impairing the body, causes the soul to abandon the organic parts supplied by that nerve. You argue that, if the soul is not present in a given part of the body, when the nerve has been injured, the soul was not present in that same part before the nerve was injured. This inference is evidently wrong. The soul informs the organism, and any part of it, as long as the organs are suitably disposed for the vital operations, and abandons the organism, or any part of it, as soon as the organs have become unfit for the vital operations. Hence, as you cannot infer the non‐existence of the soul in the brain of a living man from the non‐existence of the same in the brain of a corpse, so you cannot infer its non‐existence in a part of the body before the cutting of the nerve from its non‐existence in the same part after the nerve has been cut.