TWO:It may be noticed that the carriages of some lathes move on what are termed V tracks which project above the top of lathe frames, and that in other lathes the carriages slide on top of the frames with a flat bearing. As these two plans of mounting lathe carriages have led to considerable discussion on the part of engineers, and as its consideration may suggest a plan of analysing other problems of a similar nature, I will notice some of the conditions existing in the two cases, calling the different arrangements by the names of flat shears and track shears.The officer shook his head in a puzzled kind of way. He knew nothing about any woman. Perhaps those below had accounted for her. There were lights all over the house when Lalage was led down with the handcuffs on his wrists.
日本化学機械製造は、国内外に豊富な実績を持つプラントエンジニアリングとものづくりのプロフェッショナル集団です。
設計?製造?建設?メンテナンスまで自社一貫で担い、
顧客企業様の課題を解決するベストパートナーであるために日々前進し続けています。
オンリーワンの技術を武器に、私たちと一緒にあらゆる分野のプラントエンジニアリングに挑戦してみませんか。
- THREE:We perceive a precisely similar change of tone on comparing the two great historians who have respectively recorded the struggle of Greece against Persia, and the struggle of imperial Athens against Sparta and her allies. Though born within fifteen years of one another, Herodotus and Thucydides are virtually separated by an interval of two generations, for while the latter represents the most advanced thought of his time, the former lived among traditions inherited from the age preceding his own. Now, Herodotus is not more remarkable for the earnest piety than for the clear sense of justice which runs through his entire work. He draws no distinction between public and private morality. Whoever makes war on his neighbours without provocation, or rules without the consent of the governed, is, according to him, in the wrong, although he is well aware that such wrongs are constantly committed. Thucydides knows nothing74 of supernatural interference in human affairs. After relating the tragical end of Nicias, he observes, not without a sceptical tendency, that of all the Greeks then living, this unfortunate general least deserved such a fate, so far as piety and respectability of character went. If there are gods they hold their position by superior strength. That the strong should enslave the weak is a universal and necessary law of Nature. The Spartans, who among themselves are most scrupulous in observing traditional obligations, in their dealings with others most openly identify gain with honour, and expediency with right. Even if the historian himself did not share these opinions, it is evident that they were widely entertained by his contemporaries, and he expressly informs us that Greek political morality had deteriorated to a frightful extent in consequence of the civil discords fomented by the conflict between Athens and Sparta; while, in Athens at least, a similar corruption of private morality had begun with the great plague of 430, its chief symptom being a mad desire to extract the utmost possible enjoyment from life, for which purpose every means was considered legitimate. On this point Thucydides is confirmed and supplemented by the evidence of another contemporary authority. According to Aristophanes, the ancient discipline had in his time become very much relaxed. The rich were idle and extravagant; the poor mutinous; young men were growing more and more insolent to their elders; religion was derided; all classes were animated by a common desire to make money and to spend it on sensual enjoyment. Only, instead of tracing back this profound demoralisation to a change in the social environment, Aristophanes attributes it to demagogues, harassing informers, and popular poets, but above all to the new culture then coming into vogue. Physical science had brought in atheism; dialectic training had destroyed the sanctity of ethical restraints. When, however, the religious and virtuous Socrates is put forward as a type of both tend75encies, our confidence in the comic poets accuracy, if not in his good faith, becomes seriously shaken; and his whole tone so vividly recalls the analogous invectives now hurled from press and pulpit against every philosophic theory, every scientific discovery, every social reform at variance with traditional beliefs or threatening the sinister interests which have gathered round iniquitous institutions, that at first we feel tempted to follow Grote in rejecting his testimony altogether. So far, however, as the actual phenomena themselves are concerned, and apart from their generating antecedents, Aristophanes does but bring into more picturesque prominence what graver observers are content to indicate, and what Plato, writing a generation later, treats as an unquestionable reality. Nor is the fact of a lowered moral tone going along with accelerated mental activity either incredible or unparalleled. Modern history knows of at least two periods remarkable for such a conjunction, the Renaissance and the eighteenth century, the former stained with every imaginable crime, the latter impure throughout, and lapsing into blood-thirsty violence at its close. Moral progress, like every other mode of motion, has its appropriate rhythmits epochs of severe restraint followed by epochs of rebellious license. And when, as an aggravation of the reaction from which they periodically suffer, ethical principles have become associated with a mythology whose decay, at first retarded, is finally hastened by their activity, it is still easier to understand how they may share in its discredit, and only regain their ascendency by allying themselves with a purified form of the old religion, until they can be disentangled from the compromising support of all unverified theories whatever. We have every reason to believe that Greek life and thought did pass through such a crisis during the second half of the fifth century B.C., and we have now to deal with the speculative aspects of that crisis, so far as they are represented by the Sophists.By destroying the life and possessions of peaceful civilians the Germanswho always boast so much about their military honourgave unconscious expression to their awe of the fearless heroes who still stood their ground to the north of Lige, whilst the Germans were still besieging Antwerp.
- THREE:"Devant-le-Pont?"So far as he can be said to have studied science at all, the motive of Epicurus was hatred for religion far more than love for natural law. He seems, indeed, to have preserved that aversion for Nature which is so characteristic of the earlier Greek Humanists. He seems to have imagined that by refusing to tie himself down to any one explanation of external phenomena, he could diminish their hold over the mind of man. For when he departs from his usual attitude of suspense and reserve, it is to declare dogmatically that the heavenly bodies are no larger than they appear to our senses, and perhaps smaller than they sometimes appear.170 The only88 arguments adduced on behalf of this outrageous assertion were that if their superficial extension was altered by transmission, their colour would be altered to a still greater degree; and the alleged fact that flames look the same size at all distances.171 It is evident that neither Epicurus nor Lucretius, who, as usual, transcribes him with perfect good faith, could ever have looked at one lamp-flame through another, or they would have seen that the laws of linear perspective are not suspended in the case of self-luminous bodiesa fact which does not tell much for that accurate observation supposed to have been fostered by their philosophy.172 The truth is, that Epicurus disliked the oppressive notion of a sun several times larger than the earth, and was determined not to tolerate it, be the consequences to fact and logic what they might.
TWO:Is it thinkable that persons in that frame of mind would take up arms and invite the enemy's revenge upon themselves and those near and dear to them, a revenge of which they were so mortally afraid?"They look like the same," she admitted grudgingly. "I'm afraid you're right there."
TWO:Such was the celebrated scheme by which Plato proposed to regenerate mankind. We have already taken occasion to show how it was connected with his ethical and dialectical philosophy. We have now to consider in what relation it stands to the political experience of his own and other times, as well as to the revolutionary proposals of other speculative reformers.
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TWO:He broke his sentence in the middle of a word because the queer knocking repeated itself, but with quick presence of mind he completed his phrase to steady Sandy, whose face was growing drawn with dismay.