THREE:We have seen how Greek thought had arrived at a perfectly just conception of the process by which all physical transformations are effected. The whole extended universe is an aggregate of bodies, while each single body is formed by a combination of everlasting elements, and is destroyed by their separation. But if Empedocles was right, if these primary substances were no other than the fire, air, water, and earth of everyday experience, what became of the Heracleitean law, confirmed by common observation, that, so far from remaining unaltered, they were continually passing into one another? To this question the atomic theory gave an answer so conclusive, that, although ignored or contemned by later schools, it was revived with the great revival of science in the sixteenth century, was successfully employed in the explanation of every order of phenomena, and still remains the basis of all physical enquiry. The undulatory theory of light, the law of universal gravitation, and the laws of chemical combination can only be expressed in terms implying the existence of atoms; the laws of gaseous diffusion, and of thermodynamics generally, can only be understood with their help; and the latest develop34ments of chemistry have tended still further to establish their reality, as well as to elucidate their remarkable properties. In the absence of sufficient information, it is difficult to determine by what steps this admirable hypothesis was evolved. Yet, even without external evidence, we may fairly conjecture that, sooner or later, some philosopher, possessed of a high generalising faculty, would infer that if bodies are continually throwing off a flux of infinitesimal particles from their surfaces, they must be similarly subdivided all through; and that if the organs of sense are honeycombed with imperceptible pores, such may also be the universal constitution of matter.26 Now, according to Aristotle, Leucippus, the founder of atomism, did actually use the second of these arguments, and employed it in particular to prove the existence of indivisible solids.27 Other considerations equally obvious suggested themselves from another quarter. If all change was expressible in terms of matter and motion, then gradual change implied interstitial motion, which again involved the necessity of fine pores to serve as channels for the incoming and outgoing molecular streams. Nor, as was supposed, could motion of any kind be conceived without a vacuum, the second great postulate of the atomic theory. Here its advocates directly joined issue with Parmenides. The chief of the Eleatic school had, as we have seen, presented being under the form of a homogeneous sphere, absolutely continuous but limited in extent. Space dissociated from matter was to him, as afterwards to Aristotle, non-existent and impossible. It was, he exclaimed, inconceivable, nonsensical. Unhappily inconceivability is about the worst negative criterion of truth ever yet invented. His challenge was now35 taken up by the Atomists, who boldly affirmed that if non-being meant empty space, it was just as conceivable and just as necessary as being. A further stimulus may have been received from the Pythagorean school, whose doctrines had, just at this time, been systematised and committed to writing by Philolaus, its most eminent disciple. The hard saying that all things were made out of number might be explained and confirmed if the integers were interpreted as material atoms."But I should recognize him anywhere," Hetty protested.
Lorem ipsum dolor sit amet, consectetur adipisicing elit. Aliquam aut tenetur, amet earum quia eligendi obcaecati. Repudiandae id illum, vero iste enim reprehenderit quaerat, harum pariatur ipsa nulla tempora ex ratione illo assumenda libero ea, delectus vitae, expedita optio porro.
Lorem ipsum dolor sit amet, consectetur adipisicing elit. Aliquam aut tenetur, amet earum quia eligendi obcaecati. Repudiandae id illum, vero iste enim reprehenderit quaerat, harum pariatur ipsa nulla tempora ex ratione illo assumenda libero ea, delectus vitae, expedita optio porro.
Lorem ipsum dolor sit amet, consectetur adipisicing elit. Aliquam aut tenetur, amet earum quia eligendi obcaecati. Repudiandae id illum, vero iste enim reprehenderit quaerat, harum pariatur ipsa nulla tempora ex ratione illo assumenda libero ea, delectus vitae, expedita optio porro.
ONE:The glowing enthusiasm of Plato is, however, not entirely derived from the poetic traditions of his native city; or perhaps we should rather say that he and the great writers who preceded him drew from a common fount of inspiration. Mr. Emerson, in one of the most penetrating criticisms ever written on our philosopher,129 has pointed out the existence of two distinct elements in the Platonic Dialoguesone dispersive, practical, prosaic; the other mystical, absorbing, centripetal. The American scholar is, however, as we think, quite mistaken when he attributes the second of these tendencies to Asiatic influence. It is extremely doubtful whether Plato ever travelled farther east than Egypt; it is probable that his stay in that country was not of long duration; and it is certain that he did not acquire a single metaphysical idea from its inhabitants. He liked their rigid conservatism; he liked their institution of a dominant priesthood; he liked their system of popular education, and the place which it gave to mathematics made him look with shame on the swinish ignorance of his own countrymen in that respect;130 but on the whole he classes them among the races exclusively devoted to money-making, and in aptitude for philosophy he places them far below the Greeks. Very different were the impressions brought home from his visits to Sicily and204 Southern Italy. There he became acquainted with modes of thought in which the search after hidden resemblances and analogies was a predominant passion; there the existence of a central unity underlying all phenomena was maintained, as against sense and common opinion, with the intensity of a religious creed; there alone speculation was clothed in poetic language; there first had an attempt been made to carry thought into life by associating it with a reform of manners and beliefs. There, too, the arts of dance and song had assumed a more orderly and solemn aspect; the chorus received its final constitution from a Sicilian master; and the loftiest strains of Greek lyric poetry were composed for recitation in the streets of Sicilian cities or at the courts of Sicilian kings. Then, with the rise of rhetoric, Greek prose was elaborated by Sicilian teachers into a sort of rhythmical composition, combining rich imagery with studied harmonies and contrasts of sense and sound. And as the hold of Asiatic civilisation on eastern Hellas grew weaker, the attention of her foremost spirits was more and more attracted to this new region of wonder and romance. The stream of colonisation set thither in a steady flow; the scenes of mythical adventure were rediscovered in Western waters; and it was imagined that, by grasping the resources of Sicily, an empire extending over the whole Mediterranean might be won. Perhaps, without being too fanciful, we may trace a likeness between the daring schemes of Alcibiades and the more remote but not more visionary kingdom suggested by an analogous inspiration to the idealising soul of Plato. Each had learned to practise, although for far different purposes, the royal art of Socratesthe mastery over mens minds acquired by a close study of their interests, passions, and beliefs. But the ambition of the one defeated his own aim, to the destruction of his country and of himself; while the other drew into Athenian thought whatever of Western force and fervour was needed for the accomplishment of its205 imperial task. We may say of Plato what he has said of his own Theaettus, that he moves surely and smoothly and successfully in the path of knowledge and inquiry; always making progress like the noiseless flow of a river of oil;131 but everywhere beside or beneath that placid lubricating flow we may trace the action of another current, where still sparkles, fresh and clear as at first, the fiery Sicilian wine.Let the reader compare a hammer with a wheel and axle, inclined plane, screw, or lever, as an agent for concentrating and applying power, noting the principles of its action first, and then considering its universal use, and he will conclude that, if there is a mechanical device that comprehends distinct principles, that device is the common hammer. It seems, indeed, to be one of those provisions to meet a human necessity, and without which mechanical industry could not be carried on. In the manipulation of nearly every kind of material, the hammer is continually necessary in order to exert a force beyond what the hands may do, unaided by mechanism to multiply their force. A carpenter in driving a spike requires a force of from one to two tons; a blacksmith requires a force of from five pounds to five tons to meet the requirements of his work; a stonemason applies a force of from one hundred to one thousand pounds in driving the edge of his tools; chipping, calking, in fact nearly all mechanical operations, consist more or less in blows, such blows being the application of accumulated force expended throughout a limited distance.
ONE:Charlton said nothing. He was deeply interested. The man outside raised the lantern, and the dim light fell upon the ghastly outline of Charlton's white set face as he pressed against the panes. At the same instant the woman chanced to glance in the same direction.There was something about the corner house mystery that gripped the public imagination. There was about it both the realism and the romance that always go to make up a popular sensation.
ONE:"Why she married Leon I cannot say. Perhaps it was because he bullied her. But Leon was no saint, and he drank, and he got into gaol, and Leona left him. For a long time we did not hear what had become of her. Then I saw her in Paris at a circus. A little time later and she was mixed up in politics in Rome. But she got steadily on, living in a more luxurious way till I lost sight of her altogether.
