THREE:How much originality there may be in the anti-materialistic arguments of Plotinus we cannot tell. He certainly marks a great advance on Plato and Aristotle, approximating, in this respect, much more closely than they do to the modern standpoint. The indivisibility and permanence of mind had, no doubt, been strongly insisted on by those teachers, in contrast with the extended and fluctuating nature of body. But they did not, like him, deduce these characteristics from a direct analysis of consciousness as such. Plato inferred the simplicity and self-identity of mind from the simplicity and self-identity of the ideas which it contemplates. Aristotle went a step further, or perhaps only expressed the same meaning more clearly, when he associated immateriality with the identity of subject and object in thought.444 Moreover, both Plato and Aristotle seem to have rested the whole spiritualistic case on objective rather than on subjective considerations; although, as we have seen, the subjective interest was what dominated all the while in their thoughts. Starting with the analogy of a living body, Plato argues, both in the Phaedrus and in the Laws, that soul must everywhere be the first cause of motion, and therefore must exist prior to body.445 The elaborate scientific analysis of Aristotles Physics leads up to a similar conclusion; and the ontological analysis of the Metaphysics starts with the distinction between Form and Matter in bodies, to end with the question of their relative priority, and of the objective machinery by which they are united. Plotinus, too, sometimes refers to mind as the source300 of physical order; but this is rather in deference to his authorities than because the necessity of such an explanation seemed to him, as it did to them, the deepest ground of a spiritualistic philosophy. On the other hand, his psychological arguments for the immateriality of the soul are drawn from a wider area of experience than theirs, feeling being taken into account no less than thought; instead of restricting himself to one particular kind of cognition for evidence of spiritual power, he looks for it in every manifestation of living personality.Of these views, the first is taken by Ritter, and adopted with some modifications by M. Vacherot in his Histoire de lcole dAlexandrie. It is also unreservedly accepted by Donaldson in his continuation of Müllers History of Greek Literature, and is probably held at this moment by most Englishmen who take any interest in the subject at all. The second viewaccording to which Neo-Platonism is, at least in342 its main features, a characteristic although degenerate product of Greek thoughtis that maintained by Zeller. As against the Orientalising theory, it seems to us that Zeller has thoroughly proved his case.506 It may be doubted whether there is a single idea in Plotinus which can be shown to have its exact counterpart in any of the Hindoo or other Asiatic systems whence he is supposed to have drawn; and, as our own analysis has abundantly shown, he says nothing that cannot be derived, either directly or by a simple and easy process of evolution, from Plato, Aristotle, and the Stoics. On the other hand, has not Zeller gone much too far in treating Neo-Platonism as a product of the great religious reaction which unquestionably preceded and accompanied its appearance? Has he not altogether underrated its importance as a purely speculative system, an effort towards the attainment of absolute truth by the simple exercise of human reason? It seems to us that he has, and we shall offer some grounds for venturing to differ from his opinion.
