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THREE:The lifting strain at the front end of a platen is of course increased as the height at which the cutting is done above its top, but this has not in practice been found a difficulty of any importance, and has not even required extra length or weight of platens beyond what is demanded to receive pieces to be planed and to resist flexion in fastening heavy work. The reversing movement of planing machine platens already alluded to is one of the most complex problems in machine tool movement.Nor is it only the personality of Socrates that has been so variously conceived; his philosophy, so far as it can be separated from his life, has equally given occasion to conflicting interpretations, and it has even been denied that he had, properly speaking, any philosophy at all. These divergent presentations of his teaching, if teaching it can be called, begin with the two disciples to whom our knowledge of it is almost entirely due. There is, curiously enough, much the same inner discrepancy between Xenophon��s Memorabilia and those111 Platonic dialogues where Socrates is the principal spokesman, as that which distinguishes the Synoptic from the Johannine Gospels. The one gives us a report certainly authentic, but probably incomplete; the other account is, beyond all doubt, a highly idealised portraiture, but seems to contain some traits directly copied from the original, which may well have escaped a less philosophical observer than Plato. Aristotle also furnishes us with some scanty notices which are of use in deciding between the two rival versions, although we cannot be sure that he had access to any better sources of information than are open to ourselves. By variously combining and reasoning from these data modern critics have produced a third Socrates, who is often little more than the embodiment of their own favourite opinions.

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