Meanwhile, he had a logical machine ready to hand, which could be used with terrible effect against the Platonic Ideas. Any of theseand there were a great numberthat could be brought under one of the last nine categories were at once deprived of all claim to independent existence. Take Equality, for instance. It cannot be discovered outside quantity, and quantity is always predicated of a substance. And the same is true of number, to the utter destruction of the Neo-Pythagorean theory which gave it a separate existence. Moreover, the categories served not only to generalise and combine, but also to specificate and divide. The idea of motion occurs in three of them; in quantity, where it means increase or diminution; in quality, where it means alteration, as from hot to cold, or vice versa; and in place, implying transport from one point to another. The Idea of Good, which stands at the very summit of Platos system, may be traced through all ten categories.242 Thus, the supposed unity and simplicity of such conceptions was shown to be an illusion. Platonism was, in truth, so inconsistent with the notions embodied in common language, that it could not but be condemned by a logic based on those notions.For manufacturing processes, one importance of steam-power rests in the fact that such power can be taken to the material; and beside other advantages gained thereby, is the difference in the expense of transporting manufactured products and the raw material. In the case of iron manufacture, for example, it would cost ten times as much to transport the ore and the fuel used in smelting as it does to transport the manufactured iron; steam-power saves this difference, and without such power our present iron traffic would be impossible. In a great many manufacturing processes steam is required for heating, bleaching, boiling, and so on; besides, steam is now to a large extent employed for warming buildings, so that even when water or other power is employed, in most cases steam-generating apparatus has to be set up in addition. In many cases waste [31] steam or waste heat from a steam-engine can be employed for the purposes named, saving most of the expense that must be incurred if special apparatus is employed.
Finishing, therefore, it must be borne in mind, is but one among several processes, and that the fitting department is but one out of four or more among which attention is to be divided."A blow," said the other. "That is a poor word. It is absolute destruction."To paint Socrates at his highest and his best, it was necessary to break through the narrow limits of his historic individuality, and to show how, had they been presented to him, he would have dealt with problems outside the experience of a home-staying Athenian citizen. The founder of idealismthat is to say, the realisation of reason, the systematic application of thought to lifehad succeeded in his task because he had embodied the noblest elements of the Athenian Dmos, orderliness, patriotism, self-control, and publicity of debate, together with a receptive intelligence for improvements effected in other states. But, just as the impulse which enabled those qualities to tell decisively on Greek history at a moment of inestimable importance came from the Athenian aristocracy, with its Dorian sympathies, its adventurous ambition, and its keen attention to foreign affairs, so also did Plato, carrying the same spirit into philosophy, bring the dialectic method into contact with older and broader currents of speculation, and employ it to recognise the whole spiritual activity of his race.Once credited with a continued existence, the departed spirit would not remain in the Hades or the Elysium provided for it by the justice or the piety, of the survivor, but persisted in returning to this world and manifesting a most uncomfortable interest in its affairs; or, even if willing to remain at rest, it was liable to be dragged back by incantations, and compelled to reveal the secrets of futurity at the bidding of an unprincipled magician. What science and good feeling combined have proved unable to keep down among ourselves, naturally raged with unmitigated virulence at a time when the primitive barbarism and superstition were only covered over by a crust of culture which at many points was growing thinner every day. Among Latin writers, the younger Pliny, Suetonius, and Apuleius, among Greek writers, Plutarch, Pausanias, Maximus Tyrius, Philostratus, and Dion Cassius, afford unequivocal evidence of their belief and the belief of their contemporaries in ghostly apparitions; and Lucian, while rejecting ghost-stories on his own account, speaks as if they were implicitly accepted even in philosophical circles.372 Still more abundant is the evidence proving the frequency of attempts made to evoke spirits by means of magical incantations. Horaces Canidia boasts that she can raise the dead even after their bodies have been burned.373 Lucan describes the process of conjuring up a ghost at length; and it is thought that he inserted the whole scene in his poem as a satire on the emperor Nero, who is known to have been addicted to such practices, as were also his successors, Didius Julianus, Caracalla, and Elagabalus. And that the same art was cultivated by private persons is clear from the allusions made to it by Quintilian, Apuleius, Tertullian, and Heliod?rus.374It will have been observed that, so far, the merit of originating atomism has been attributed to Leucippus, instead of to the more celebrated Democritus, with whose name it is usually associated. The two were fast friends, and seem always to have worked together in perfect harmony. But Leucippus, although next to nothing is known of his life, was apparently the older man, and from him, so far as we can make out, emanated the great idea, which his brilliant coadjutor carried into every department of enquiry, and set forth in works which are a loss to literature as well as to science, for the poetic splendour of their style was not less remarkable than the encyclopaedic range of their contents. Democritus was born at Abdra, a Thracian city, 470 B.C., a year before Socrates, and lived to a very advanced agemore than a hundred, according to some accounts. However this may be, he was probably, like most of his great countrymen, possessed of immense vitality. His early manhood was spent in Eastern travel, and he was not a little proud of the numerous countries which he had visited, and the learned men with whom he had conversed. His time was mostly occupied in observing Nature, and in studying mathematics; the sages of Asia and Egypt may have acquainted him with many useful scientific facts, but we have seen that his philosophy was derived from purely Hellenic sources. A few fragments of his numerous writings still survivethe relics of an intellectual Ozymandias. In them are briefly shadowed forth the conceptions which Lucretius, or at least his modern36 English interpreters, have made familiar to all educated men and women. Everything is the result of mechanical causation. Infinite worlds are formed by the collision of infinite atoms falling for ever downward through infinite space. No place is left for supernatural agency; nor are the unaided operations of Nature disguised under Olympian appellations. Democritus goes even further than Epicurus in his rejection of the popular mythology. His system provides no interstellar refuge for abdicated gods. He attributed a kind of objective existence to the apparitions seen in sleep, and even a considerable influence for good or for evil, but denied that they were immortal. The old belief in a Divine Power had arisen from their activity and from meteorological phenomena of an alarming kind, but was destitute of any stronger foundation. For his own part, he looked on the fiery spherical atoms as a universal reason or soul of the world, without, however, assigning to them the distinct and commanding position occupied by a somewhat analogous principle in the system which we now proceed to examine, and with which our survey of early Greek thought will most fitly terminate.
