95. It must be owned that the firm belief of Descartes in the immateriality of the Ego or thinking principle, was accompanied with what in later times would have been deemed rather too great concessions to the materialists. He held the imagination and the memory to be portions of the brain, wherein the images of our sensations are bodily preserved; and even assigned such a motive force to the imagination, as to produce those involuntary actions which we often perform, and all the movements of brutes. “This explains how all the motions of all animals arise, though we grant them no knowledge of things, but only an imagination entirely corporeal, and how all those operations which do not require the concurrence of reason are produced in us.” But the whole of his notions as to the connexion of the soul and body, and indeed all his physiological theories, of which he was most enamoured, do little credit to the Cartesian philosophy. They are among those portions of his creed which have lain most open to ridicule, and which it would be useless for us to detail. He seems to have expected more advantage to psychology from anatomical researches than in that state of the science, or even probably in any future state of it, anatomy could afford. When asked once where was his library, he replied, showing a calf he was dissecting, This is my library.[239] His treatise on the passions, a subject so important in the philosophy of the human mind, is made up of crude hypotheses, or at best irrelevant observations, on their physical causes and concomitants. [239] Descartes was very fond of dissection: C’est un exercise où je me suis souvent occupé depuis onze ans, et je crois qu’il n’y a guère de médecins qui y ait regardé de si près que moi. Vol. viii., p. 100., also p. 174 and 180. |Seat of soul in pineal gland.|