ONE:A machine may be mechanically correct, arranged with symmetry, true proportions, and proper movements; but if such a machine has not commercial value, and is not applicable to a useful purpose, it is as much a failure as though it were mechanically inoperative. In fact, this consideration of cost and commercial value must be continually present; and a mechanical education that has not furnished a true understanding of the relations between commercial cost and mechanical excellence will fall short of achieving the objects for which such an education is undertaken. By reasoning from such premises as have been laid down, an apprentice may form true standards by which to judge of plans and processes that he is brought in contact with, and the objects for which they are conducted."I have not used the word 'steal' at all, but let me explain the matter."
ONE:Returning once more to Epicurus, we have now to sum up the characteristic excellences and defects of his philosophy. The revival of the atomic theory showed unquestionable courage and insight. Outside the school of Democritus, it was, so far as we know, accepted by no other thinker. Plato never mentions it. Aristotle examined and rejected it. The opponents of Epicurus himself treated it as a self-evident absurdity.208 Only Marcus Aurelius seems to have contemplated the possibility of its truth.209. But while to have maintained the right theory in the face of such universal opposition was a proof of no common discernment, we must remember that appropriating the discoveries of others, even when those discoveries are in danger of being lost through neglect, is a very different thing from making discoveries for ones self. No portion of the glory due to Leucippus and Democritus should be diverted to their arrogant successor. And it must also be remembered that the Athenian philosopher, by his theory of deflection, not only spoiled the original hypothesis, but even made it a little ridiculous.Another form of naturalistic religion, fitted for universal acceptance by its appeals to common experience, was the worship of the Sun. It was probably as such that Mithras, a Syro-Persian deity, obtained a success throughout the Roman empire which at one time seemed to balance the rising fortunes of Christianity. Adoration of the heavenly bodies was, indeed, very common during this period, and was probably connected with the extreme prevalence of astrological superstition. It would also harmonise perfectly with the still surviving Olympian religion of the old Hellenic aristocracy, and would profit by the support which philosophy since the time of Socrates had extended to this form of supernaturalist belief. But, perhaps, for that very reason the classes which had now216 become the ultimate arbiters of opinion, felt less sympathy with Mithras-worship and other kindred cults than with the Egyptian mysteries. These had a more recognisable bearing on their own daily life, and, like the Chthonian religions of old Greece, they included a reference to the immortality of the soul. Moreover, the climate of Europe, especially of western Europe, does not permit the sun to become an object of such excessive adoration as in southern Asia. Mithras-worship, then, is an example of the expansive force exhibited by Oriental ideas rather than of a faith which really satisfied the wants of the Roman world.
ONE:In cylindrical fitting, which as before pointed out, constitutes the greater part in machine fitting, gauges are especially important, because trial-fitting is in most cases impossible.What! to see thee no more, and to feel thee no more,
