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THREE:In addition to its other great lessons, the Symposium has afforded Plato an opportunity for contrasting his own method of philosophising with pre-Socratic modes of thought. For it consists of a series of discourses in praise of love, so arranged as to typify the manner in which Greek speculation, after beginning with mythology, subsequently advanced to physical theories of phenomena, then passed from the historical to the contemporary method, asking, not whence did things come, but what are they in themselves; and finally arrived at the logical standpoint of analysis, classification, and induction.A GLORIOUS summer evening, quite refreshing after the exhausting heat of the day. Nature invited to restfulness, and so much the more cruel sounded the incessant thunder of the guns, which also boomed from the citadel. As soon as the Germans had taken possession of this old, dilapidated fortress they proceeded to drag their guns on to it, and trained them on the surrounding forts.

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THREE:"3. The German and Belgian authorities will do everything in their power to prevent scarcity of food."

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THREE:"And what do you want for this?" he asked."The others have not come yet," he said coolly. "I had arranged for the ceremony to take place without me. I was being detained elsewhere. But behold I am here to take my vengeance in my own hands. When the others come they will be surprised to see their leader again, Beppo."

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THREE:"Children and dogs never bore me," he said. "I wish I had a garden like yours. Pleasant perfumes always stimulate the imagination. Did you ever notice how the smell of certain flowers recalls vivid recollections?"

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THREE:In the foregoing remarks we have already passed from the purely aesthetic to the historical or psychological view of Neo-Platonism��that is, the view which considers a philosophy in reference to the circumstances of its origin. Every speculative system reflects, more or less fully, the spirit of the age in which it was born; and the absence of all allusion to contemporary events does not prove that the system of Plotinus was an exception to this rule. It only proves that the tendency of the age was to carry away men��s thoughts from practical to theoretical interests. We have already characterised the first centuries of Roman imperialism as a period of ever-increasing religious reaction; and in this reaction we attempted to distinguish between the development of supernaturalist beliefs which were native to Greece and Italy, and the importation of beliefs which had originated in the East. We saw also how philosophy shared in the general tendency, how it became theological and spiritualistic instead of ethical and naturalistic, how its professors were converted from opponents into upholders of the popular belief. Now, according to some critics, Neo-Platonism marks another stage in the gradual substitution of faith for reason, of authority for independent thought; the only question being whether we should interpret it as a product of Oriental mysticism, or as a simple sequence of the same movement which had previously led from Cicero to Seneca, from Seneca to Epict��tus, from Epict��tus to Marcus Aurelius.Professor John Sweet of Cornell University, in America, while delivering an address to the mechanical engineering classes, during the same year, made use of the following words: "It is [5] not what you 'know' that you will be paid for; it is what you can 'perform,' that must measure the value of what you learn here." These few words contain a truth which deserves to be earnestly considered by every student engineer or apprentice; as a maxim it will come forth and apply to nearly everything in subsequent practice.

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THREE:To construe the term "transmission of power" in its full sense, it will, when applied to machinery, include nearly all that has motion; for with the exception of the last movers, or where power passes off and is expended upon work that is performed, all machinery of whatever kind may be called machinery of transmission. Custom has, however, confined the use of the term to such devices as are employed to convey power from one place to another, without including organised machines through which power is directly applied to the performance of work. Power is transmitted by means of shafts, belts, friction wheels, gearing, and in some cases by water or air, as various conditions of the work to be performed may require. Sometimes such machinery is employed as the conditions do not require, because there is, perhaps, nothing of equal importance connected with mechanical engineering of which there exists a greater diversity of opinion, or in which there is a greater diversity of practice, than in devices for transmitting power.It may also be mentioned that lathes constructed with angular guides, have usually such ways for the moving heads as well as for the carriages; this gives the advantage of firmly binding the [125] two sides of the frame together in fastening the moving head, which in effect becomes a strong girt across the frame; the carriages also have an equal and independent hold on both sides of a shear. In following this matter thus far, it may be seen how many conditions may have to be considered in reasoning about so apparently simple a matter as the form of ways for lathe carriages; we might even go on to many more points that have not been mentioned; but what has been explained will serve to show that the matter is not one of opinion alone, and that without practical advantages, machine tool-makers will not follow the most expensive of these two modes of mounting lathe carriages.

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