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TWO:In respect to lathe manipulation, which is perhaps the most difficult to learn of all shop operations, the following hints are given, which may prove of service to a learner: At the beginning the form of tools should be carefully studied; this is one of the great points in lathe work; the greatest distinction between a thorough and indifferent latheman is that one knows the proper form and temper of tools and the other does not. The adjustment and presenting of tools is soon learned by experience, but the proper form of tools is a matter of greater difficulty. One of the first things to study is the shape of cutting edges, both as to clearance below the edge of the tool, and the angle of the edge, with reference to both turning and boring, because the latter is different from turning. The angle of lathe tools is clearly suggested by diagrams, and there is no better first lesson in drawing than to construct diagrams of cutting angles for plane and cylindrical surfaces.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 parts347 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.