In this connexion we may deal with the question whether the philosophy of Plotinus is properly described as a pantheistic system. Plotinus was certainly not a pantheist in the same sense as Spinoza and Hegel. With him, the One and the All are not identical; although impersonal and unconscious, his supreme principle is not immanent in the universe, but transcends and creates it: the totality of things are dependent on it, but it is independent of them. Even were we to assume that the One is only ideally distinct from the existence which it causes, still the Nous would remain separate from the world-soul, the higher Soul from Nature, and, within the sphere of Nature herself, Matter would continue to be perpetually breaking away from Form, free-will would be left in unreconciled hostility to fate. Once, and once only, if we remember rightly, does our philosopher rise to the modern conception of the universe as an absolute whole whose parts are not caused but constituted by their fundamental unity, and are not really separated from one another in Nature, but only ideally distinguished in our thoughts. And he adds that we cannot keep up this effort of abstraction for long at a time; things escape from us, and return to their original unity.[517] With Plotinus himself, however, the contrary was true: what he could not keep up was his grasp on the synthetic unity of things. And he himself supplies us with a ready explanation why it should be so, when he points to the dividing tendency of thought as opposed to the uniting tendency of Nature. What he and the other Hellenic thinkers wanted above all, was to make the world clear to themselves and to their pupils, and this they accomplished by their method of serial classification, by bringing into play what we have often spoken of as the moments of antithesis, mediation, and circumscription, Stoicism also had just touched the pantheistic idea, only to let it go again. After being nominally identified with the world, the Stoic God was represented as a designing intelligence, like the Socratic God—an idea wholly alien from real pantheism.