THREE:The immortality of the soul is a subject on which idealistic philosophers habitually express themselves in terms of apparently studied ambiguity, and this is especially true of Plotinus. Here, as elsewhere, he repeats the opinions and arguments of Plato, but with certain developments which make his adhesion to the popular belief in a personal duration after death considerably more doubtful than was that of his master. One great difficulty in the way of Platos doctrine, as commonly understood, is that it attributes a permanence to individuals, which, on the principles of his system, should belong only to general ideas. Now, at first sight, Plotinus seems to evade this difficulty by admitting everlasting ideas of individuals no less than of generic types.514 A closer examination, however, shows that this view is even more unfavourable than Platos to the hope of personal immortality. For either our real self is independent of our empirical consciousness, which is just what we wish to have preserved, or, as seems more probable, the eternal existence which it enjoys is of an altogether ideal character, like that which Spinoza also attributed to the346 human soul, and which, in his philosophy, certainly had nothing to do with a prolongation of individual consciousness beyond the grave. As Madame de Sta?l observes of a similar view held at one time by Schelling, cette immortalit-l ressemble terriblement la mort. And when, in addition to his own theory of individual ideas, we find Plotinus adopting the theory of the Stoics, that the whole course of mundane affairs periodically returns to its starting-point and is repeated in the same order as before,515 we cannot help concluding that human immortality in the popular sense must have seemed as impossible to him as it did to them. We must, therefore, suppose that the doctrine of metempsychosis and future retributions which he unquestionably professes, applies only to certain determinate cycles of psychic life; or that it was to him, what it had probably been to Plato, only a figurative way of expressing the essential unity of all souls, and the transcendent character of ethical distinctions.516The last-named thinker would, no doubt, repudiate the title of pantheist; and it is certain that, under his treatment, pantheism has reverted, by a curious sort of atavism, to something much more nearly resembling the original doctrine of the Neo-Platonic school. Mr. Spencer tells us that the world is the manifestation of an unknowable Power. Plotinus said nearly the same, although not in such absolutely self-contradictory terms.524 Mr. Spencer constantly assumes, by speaking of354 it in the singular number, that the creative Power of which we know nothing is one; having, apparently, convinced himself of its unity by two methods of reasoning. First, he identifies the transcendent cause of phenomena with the absolute, which is involved in our consciousness of relation; leaving it to be inferred that as relativity implies plurality, absoluteness must imply unity. And, secondly, from the mutual convertibility of the physical forces, he infers the unity of that which underlies force. Plotinus also arrives at the same result by two lines of argument, one posteriori, and derived from the unity pervading all Nature; the other priori, and derived from the fancied dependence of the Many on the One. Even in his use of the predicate Unknowable without a subject, Mr. Spencer has been anticipated by Damascius, one of the last Neo-Platonists, who speaks of the supreme principle as τ? ?γνωστον.525 And the same philosopher anticipates the late Father Dalgairns in suggesting the very pertinent question, how, if we know nothing about the Unknowable, we know that it is unknowable.
