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FORE:5. Every part laid down has something to govern it that may be termed a "base"��some condition of function or position which, if understood, will suggest size, shape, and relation to other parts. By searching after a base for each and every part and detail, the draughtsman proceeds upon a regular system, continually maintaining a test of what is done. Every wheel, shaft, screw or piece of framing should be made with a clear view of the functions it has to fill, and there are, as before said, always reasons why such parts should be of a certain size, have such a speed of movement, or a certain amount of bearing surface, and so on. These reasons or conditions may be classed as expedient, important, or essential, and must be estimated accordingly. As claimed at the beginning, the designs of machines can only in a limited degree be determined by mathematical data. Leaving out all considerations of machine operation with which books have scarcely attempted to deal, we have only to refer to the element of strains to verify the general truth of the proposition.

FORE:During the two centuries that ended with the close of the Peloponnesian war, a single race, weak numerically, and weakened still further by political disunion, simultaneously developed all the highest human faculties to an extent possibly rivalled but certainly not surpassed by the collective efforts of that vastly greater population which now wields the accumulated resources of modern Europe. This race, while maintaining a precarious foothold on the shores of the Mediterranean by repeated prodigies of courage and genius, contributed a new element to civilisation which has been the mainspring of all subsequent progress, but which, as it expanded into wider circles and encountered an increasing resistance from without, unavoidably lost some of the enormous elasticity that characterised its earliest and most concentrated reaction. It was the just boast of the Greek that to Asiatic refinement and Thracian valour he joined a disinterested thirst for knowledge unshared by his neighbours on either side.5 And if a contemporary of Pericles could have foreseen all that would be thought, and said, and done during2 the next twenty-three centuries of this world��s existence, at no period during that long lapse of ages, not even among the kindred Italian race, could he have found a competitor to contest with Hellas the olive crown of a nobler Olympia, the guerdon due to a unique combination of supreme excellence in every variety of intellectual exercise, in strategy, diplomacy, statesmanship; in mathematical science, architecture, plastic art, and poetry; in the severe fidelity of the historian whose paramount object is to relate facts as they have occurred, and the dexterous windings of the advocate whose interest leads him to evade or to disguise them; in the far-reaching meditations of the lonely thinker grappling with the enigmas of his own soul, and the fervid eloquence by which a multitude on whose decision hang great issues is inspired, directed, or controlled. He would not, it is true, have found any single Greek to pit against the athletes of the Renaissance; there were none who displayed that universal genius so characteristic of the greatest Tuscan artists such as Lionardo and Michael Angelo; nor, to take a much narrower range, did a single Greek writer whose compositions have come down to us excel, or even attempt to excel, in poetry and prose alike. But our imaginary prophet might have observed that such versatility better befitted a sophist like Hippias or an adventurer like Critias than an earnest master of the Pheidian type. He might have quoted Pindar��s sarcasm about highly educated persons who have an infinity of tastes and bring none of them to perfection;6 holding, as Plato did in the next generation, that one man can only do one thing well, he might have added that the heroes of modern art would have done much nobler work had they concentrated their powers on a single task instead of attempting half a dozen and leaving most of them incomplete.

FORE:Not so Sandy!370

FORE: Possibly the world may move, and possibly it may be at rest. Possibly it may be round, or else it may be triangular, or have any other shape. Possibly the sun and the stars may be extinguished at setting, and be lighted afresh at their rising: it is, however, equally possible that they may only disappear under the earth and reappear again, or that their rising and setting is due to yet other causes. Possibly the waxing and waning of the moon may be caused by the moon��s revolving; or it may be due to the atmospheric change, or to an actual increase or decrease in the moon��s size, or to some other cause. Possibly the moon may shine with borrowed light, or it may shine with its own, experience supplying us with instances of bodies which give their own light, and of others which have their light borrowed. From these and such like statements it appears that questions of natural science in themselves have no value for Epicurus. Whilst granting that only one natural explanation of phenomena is generally possible, yet in any particular case it is perfectly indifferent which explanation is adopted.169We have seen how, for the antithesis between Form and Matter, was substituted the wider antithesis between Actuality and Possibility. Even in this latter the opposition is more apparent than real. A permanent possibility is only intelligible through the idea of its realisation, and sooner or later is certain to be realised. Aristotle still further bridges over the interval between them by a new conception��that of motion. Motion, he tells us, is the process of realisation, the transformation of power into act. Nearly the whole of his Physics is occupied with an enquiry into its nature and origin. As first conceived, it is equivalent to what we call change rather than348 to mechanical movement. The table of categories supplies an exhaustive enumeration of its varieties. These are, as we have already mentioned, alteration of quality or transformation, increase or decrease of quantity, equivalent to growth and decay, and transport from place to place. Sometimes a fourth variety is added, derived from the first category, substance. He calls it generation and destruction, the coming into existence or passing out of it again. A careful analysis shows that motion in space is the primordial change on which all others depend for their accomplishment. To account for it is the most vitally important problem in philosophy.

FORE:"Well, we shall hear more of that lustreless black motor later on when I come to go closely into the mystery and show the police what asses they are. You address a question to the driver and he turns out to be dumb. He takes you to the corner house, where you are received by a fair woman with a mantilla over her head so that you have the very vaguest idea of her features. If you were asked to swear to her identity you couldn't do it I suppose?"

FORE:Leona laughed outright.An energy continually advancing through successive gradations, and diminishing as it advances��such, as we have seen, is the conception of existence offered by Plotinus. We have seen, also, how to explain the genesis of one principle from another without the aid of supernatural volition or of mechanical causation, he is compelled to press into the service every sort of relationship by which two objects can be connected, and to invest it with a dynamical significance which only the phenomena of matter and motion can possess. But what he chiefly relies on for guidance in this tortuous labyrinth of timeless evolution, is the old Greek principle that contraries are generated from one another. And with him, as with the earlier thinkers, all contraries reduce themselves, in the last analysis, to the four great antitheses of the One and the Many, Being and not-Being, the Same and the Other, Rest and Motion. It matters nothing that he should have followed Plato to the extent of co-ordinating five of these terms as supreme archetypal Ideas, immediately resulting from the self-consciousness of Nous, and themselves producing all other forms of existence. They are used, quite independently of that derivation, to explain the connexion of the various323 creative principles with one another. Nous is deduced from its first cause as Being from not-Being, as the Many from the One, as Difference from Identity, and as Motion from Rest.474 To explain the generation of Soul from Nous is a more difficult problem. The One had originally been defined as the antithetical cause of Nous, and therefore the latter could easily be accounted for by simply reversing the analytical process; whereas Nous had not been defined as the cause of Soul, but as the model whence her creative Ideas are derived. Soul, in fact, is not opposed to anything; she is the connecting link between sense and spirit. In this strait, Plotinus seems to think that the antithesis between Rest and Motion is the best fitted to express the nature of her descent from the higher principle; and on one occasion he illustrates the relation of his three divine substances to one another by the famous figure of a central point representing the One, a fixed circle round that point representing the Nous, and outside that, again, a revolving circle representing the Soul.475 Still, the different parts of the system are very awkwardly pieced together at this juncture; for the creative energy of the Nous has already been invoked to account for the Ideas or partial intelligences into which it spontaneously divides; and one does not understand how it can be simultaneously applied to the production of something that is not an Idea at all.

FORE:and grant that we the wisdom

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