After much searching, we have not been able to find the originals of the two passages quoted by Sir A. Grant. We have, however, found others setting forth the doctrine of Natural Realism with a clearness which leaves nothing to be desired. Aristotle tells us that former naturalists were wrong when they said that there could be no black or white without vision, and no taste without tasting; that is, they were right about the actuality, and wrong about the possibility; for, as he explains, our sensations are produced by the action of external bodies on the appropriate organs, the activity being the same while the existence is different. A sonorous body produces a sound in our hearing; the sound perceived and the action of the body are identical, but not their existence; for, he adds, the hearer need not be always listening, nor the sonorous body sounding; and so with all the other senses.267CHAPTER XL. ANOTHER COIL.
ONE:Returning to Socrates, we must further note that his identification of virtue with science, though it does not ex135press the whole truth, expresses a considerable part of it, especially as to him conduct was a much more complex problem than it is to some modern teachers. Only those who believe in the existence of intuitive and infallible moral perceptions can consistently maintain that nothing is easier than to know our duty, and nothing harder than to do it. Even then, the intuitions must extend beyond general principles, and also inform us how and where to apply them. That no such inward illumination exists is sufficiently shown by experience; so much so that the mischief done by foolish people with good intentions has become proverbial. Modern casuists have, indeed, drawn a distinction between the intention and the act, making us responsible for the purity of the former, not for the consequences of the latter. Though based on the Socratic division between mind and body, this distinction would not have commended itself to Socrates. His object was not to save souls from sin, but to save individuals, families, and states from the ruin which ignorance of fact entails.CHAPTER XI. THE NOTES ARE TRACED.
TWO:
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ONE:I dont see how anything can slip up, Larry gave his opinion."Marvellous!" Bruce cried. "It is exactly as you have said."
TWO:"Wrong?" Lawrence cried as he paced the room. "Not much. Why, you are giving me the master key to the situation. Look me up again this evening. I guess I shall be able to astonish you. I'm off to Frampton's now. I must have a copy of that paper if it costs me a hundred pounds."She managed to gain her bedroom unseen, she stood with a fast-beating heart at the head of the landing listening. All the servants had gone to bed long ago, there were only one or two of the electrics burning.
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ONE:This process was conceived by Aeschylus as a conflict between two generations of gods, ending with their complete reconciliation. In the Prometheus Bound we have the commencement of the conflict, in the Eumenides its close. Our sympathies are apparently at first intended to be enlisted on behalf of the older divinities, but at last are claimed exclusively by the younger. As opposed to Prometheus, Zeus is evidently in the wrong, and seeks to make up for his deficiencies by arbitrary violence. In the Oresteia he is the champion of justice against iniquity, and through his interpreter, Apollo, he enforces a revised moral code against the antiquated claims of the Erinyes; these latter, however, ultimately consenting to become guardians of the new social70 order. The Aeschylean drama shows us Greek religion at the highest level it could reach, unaided by philosophical reflection. With Sophocles a perceptible decline has already begun. We are loth to say anything that may sound like disparagement of so noble a poet. We yield to none in admiration for one who has combined the two highest qualities of artsweetness and strengthmore completely than any other singer, Homer alone excepted, and who has given the primordial affections their definitive expression for all time. But we cannot help perceiving an element of superstition in his dramas, which, so far, distinguishes them unfavourably from those of his Titanic predecessor. With Sophocles, when the gods interfere, it is to punish disrespect towards themselves, not to enforce justice between man and man. Ajax perishes by his own hand because he has neglected to ask for divine assistance in battle. Laius and Jocast come to a tragic end through disobedience to a perfectly arbitrary oracle; and as a part of the same divine purpose Oedipus encounters the most frightful calamities by no fault of his own. The gods are, moreover, exclusively objects of fear; their sole business is to enforce the fulfilment of enigmatic prophecies; they give no assistance to the pious and virtuous characters. Antigon is allowed to perish for having performed the last duties to her brothers corpse. Neoptolemus receives no aid in that struggle between ambition on the one hand with truthfulness and pity on the other which makes his character one of the most interesting in all imaginative literature. When Athn bids Odysseus exult over the degradation of Ajax, the generous Ithacan refuses to her face, and falls back on the consciousness of a common humanity uniting him in sympathy with his prostrate foe.It is not the intention to discuss patent law, nor even to estimate what benefits have in the past, or may in the future, be gained to technical industry by the patent system, but to impress engineering apprentices with a better and more dignified appreciation of their calling than to confound it with chance invention, and thereby destroy that confidence in positive results which has in the past characterised mechanical engineering; also to caution learners against the loss of time and effort too often expended [161] in searching after inventions.
TWO:Up, and still climbing, the airplane continued through the fog.In passing thus rapidly over so important a subject, and one that admits of so extended a consideration as machinery of transmission, the reader can see that the purpose has been to touch only upon such points as will lead to thought and investigation, and especially to meet such queries as are most likely to [57] arise in the mind of a learner. In arranging and erecting machinery of transmission, obviously the first problem must be, what kind of machinery should be employed, and what are the conditions which should determine the selection and arrangement? What has been written has, so far as possible, been directed to suggesting proper means of solving these questions.
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TWO:Those who will may see in all this an anticipation of chemical substitution and double decomposition. We can assure them that it will be by no means the most absurd parallel discovered between ancient and modern ideas. It is possible, however, to trace a more real connexion between the Aristotelian physics and mediaeval thought. We do not of361 course mean the scholastic philosophy, for there never was the slightest doubt as to its derivation; we allude to the alchemy and astrology which did duty for positive science during so many centuries, and even overlapped it down to the time of Newton, himself an ardent alchemist. The superstitions of astrology originated independently of the peripatetic system, and probably long before it, but they were likely to be encouraged by it instead of being repressed, as they would have been by a less anthropomorphic philosophy. Aristotle himself, as we have seen, limited the action of the heavens on the sublunary sphere to their heating power; but, by crediting them with an immortal reason and the pursuit of ends unknown to us, he opened a wide field for conjecture as to what those ends were, and how they could be ascertained. That the stars and planets were always thinking and acting, but never about our affairs, was not a notion likely to be permanently accepted. Neither was it easy to believe that their various configurations, movements, and names (the last probably revealed by themselves) were entirely without significance. From such considerations to the casting of horoscopes is not a far remove. The Aristotelian chemistry would still more readily lend itself to the purposes of alchemy. If Nature is one vast process of transmutation, then particular bodies, such as the metals, not only may, but must be convertible into one another. And even those who rejected Aristotles logic with scorn still clung to his natural philosophy when it flattered their hopes of gain. Bacon kept the theory of substantial forms. His originality consisted in looking for a method by which any form, or assemblage of forms might be superinduced at pleasure on the underlying matter. The real development of knowledge pursued a far different course. The great discoverers of the sixteenth and seventeenth centuries achieved their success by absolutely reversing the method of Aristotle, by bringing into fruitful contact principles which he had condemned to barren isolation.362 They carried terrestrial physics into the heavens; they brought down the absoluteness and eternity of celestial law to earth; they showed that Aristotles antithetical qualities were merely quantitative distinctions. These they resolved into modes of motion; and they also resolved all motions into one, which was both rectilinear and perpetual. But they and their successors put an end to all dreams of transmutation, when they showed by another synthesis that all matter, at least within the limits of our experience, has the changeless consistency once attributed exclusively to the stellar spheres.
FORE:By assuming this or any other well-proved example, and estimating larger or smaller shafts by keeping their diameters as the cube root of the power to be transmitted, the distance between bearings as the diameter, and the speed inverse as the diameter, the reader will find his calculations to agree approximately with the modern practice of our best engineers. This is not mentioned to give proportions for shafts, so much as to call attention to accidental strains, such as winding belts, and to call attention to a marked discrepancy between actual practice and such proportions as would be given by what has been called the measured or determinable strains to which shafts are subjected.
FORE:23Not a single person was seen on the road, and everything went well until we got to the village of Veldwezelt. Suddenly, quite unexpectedly, a violent rifle fire and a continued whistling of bullets was heard from the neighbourhood of a house close by. Although the soldiers later on asserted to the contrary, I was sure that the firing did not come from the house, but from some underwood near by.
FORE:In the use of hydraulic apparatus for transmitting and applying power, there is, however, this difficulty to be contended with: water is inelastic, and for the performance of irregular duty, there is a loss of power equal to the difference between the duty that a piston may perform and what it does perform; that is, the amount of water, and consequently the amount of power given off, is as the movement and volume of the water, instead of as the work done. The application of hydraulic machinery to the lifting and handling of weights will be further noticed in another place.
FORE:
FORE:"At dawn the bombardment started again, but only the front was seriously damaged. The garrison stood as firm as a rock. Here and there the beginnings of a fire were soon extinguished.
FORE:This principle is somewhat obscure, and the nature of percussive forces not generally considereda matter which may be illustrated by considering the action of a simple hand-hammer. Few [103] people, in witnessing the use of a hammer, or in using one themselves, ever think of it as an engine giving out tons of force, concentrating and applying power by functions which, if performed by other mechanism, would involve trains of gearing, levers, or screws; and that such mechanism, if employed instead of a hammer, must lack that important function of applying force in any direction as the will and hands may direct. A simple hand-hammer is in the abstract one of the most intricate of mechanical agentsthat is, its action is more difficult to analyse than that of many complex machines involving trains of mechanism; yet our familiarity with hammers causes this fact to be overlooked, and the hammer has even been denied a place among those mechanical contrivances to which there has been applied the name of "mechanical powers."
FORE:It was that way when I looked before, Sandy said. That was why I didnt think anybody meant to use itAlas! what is life, what is death, what are we,
FORE:As a means for transmitting power, shafts afford the very important advantage that power can be easily taken off at any point throughout their length, by means of pulleys or gearing, also in forming a positive connection between the motive-power and machines, or between the different parts of machines. The capacity of shafts in resisting torsional strain is as [46] the cube of their diameter, and the amount of torsional deflection in shafts is as their length. The torsional capacity being based upon the diameter, often leads to the construction of what may be termed diminishing shafts, lines in which the diameter of the several sections are diminished as the distance from the driving power increases, and as the duty to be performed becomes less. This plan of arranging line shafting has been and is yet quite common, but certainly was never arrived at by careful observation. Almost every plan of construction has both advantages and disadvantages, and the best means of determining the excess of either, in any case, is to first arrive at all the conditions as near as possible, then form a "trial balance," putting the advantages on one side and the disadvantages on the other, and footing up the sums for comparison. Dealing with this matter of shafts of uniform diameter and shafts of varying diameter in this way, there may be found in favour of the latter plan a little saving of material and a slight reduction of friction as advantages. The saving of material relates only to first cost, because the expense of fitting is greater in constructing shafts when the diameters of the different pieces vary; the friction, considering that the same velocity throughout must be assumed, is scarcely worth estimating.In some respects, Aristotle began not only as a disciple but as a champion of Platonism. On the popular side, that doctrine was distinguished by its essentially religious character, and by its opposition to the rhetorical training then in vogue. Now, Aristotles dialogues, of which only a few fragments have been preserved, contained elegant arguments in favour of a creative First Cause, and of human immortality; although in the writings which embody his maturer views, the first of these theories is considerably modified, and the second is absolutely rejected. Further, we are informed that Aristotle expressed himself in terms of rather violent contempt for Isocrates, the greatest living professor of declamation; and284 opened an opposition school of his own. This step has, curiously enough, been adduced as a further proof of disagreement with Plato, who, it is said, objected to all rhetorical teaching whatever. It seems to us that what he condemned was rather the method and aim of the then fashionable rhetoric; and a considerable portion of his Phaedrus is devoted to proving how much more effectually persuasion might be produced by the combined application of dialectics and psychology to oratory. Now, this is precisely what Aristotle afterwards attempted to work out in the treatise on Rhetoric still preserved among his writings; and we may safely assume that his earlier lectures at Athens were composed on the same principle.
TWO:"24.9.1914,
