To make matters worse, the original of this unflattering portrait was rapidly becoming the most powerful man in the State. Increasing specialisation had completely separated the military and political functions which had formerly been discharged by a single eminent individual, and the business of legislation was also becoming a distinct profession. No orator could obtain a hearing in the assembly who had not a technical acquaintance with the subject of deliberation, if it admitted of technical treatment, which was much more frequently the case now than in the preceding generation. As a consequence of this revolution, the ultimate power of supervision and control was passing into the hands of the law courts, where general questions could be discussed in a more popular style, and often from a wider or a more sentimental point of view. They were, in fact, beginning to wield an authority like that exercised until quite lately by the press in modern Europe, only that its action was much more direct and formidable. A vote of the Ecclêsia could only deprive a statesman of office: a vote of the Dicastery might deprive him of civil rights, home, freedom, property, or even life itself. Moreover, with the loss of empire and the decline of public spirit, private interests had come to attract a proportionately larger share of attention; and unobtrusive citizens who had formerly escaped from the storms of party passion, now found themselves marked out as a prey by every fluent and dexterous pleader who could find an excuse for dragging them before the courts. Rhetoric was hailed as the supreme art, enabling its possessor to dispense with every other study, and promising young men were encouraged to look on it as the most paying line they could take up. Even those whose civil status or natural timidity precluded them from speaking in public could gain an eminent and envied position by composing speeches for others to deliver. Behind these, again, stood the professed masters of rhetoric, claiming to direct the education and the whole public opinion of the age by their lectures and pamphlets. Philosophy was not excluded from their system of training, but it occupied a strictly subordinate place. Studied in moderation, they looked on it as a bracing mental exercise and a repertory of sounding commonplaces, if not as a solvent for old-fashioned notions of honesty; but a close adherence to the laws of logic or to the principles of morality seemed puerile pedantry to the elegant stylists who made themselves the advocates of every crowned filibuster abroad, while preaching a policy of peace at any price at home.
It is evident that the fate of Socrates was constantly in Plato’s thoughts, and greatly embittered his scorn for the multitude as well as for those who made themselves its ministers and minions. It so happened that his friend’s three accusers had been respectively a poet, a statesman, and a rhetor; thus aptly typifying to the philosopher’s lively imagination the triad of charlatans in whom public opinion found its appropriate representatives and spokesmen. Yet Plato ought consistently to have held that the condemnation of Socrates was, equally with the persecution of Pericles, a satire on the teaching which, after at least thirty years’ exercise, had left its auditors more corrupt than it found them. In like manner the ostracism of Aristeides might be set against similar sentences passed on less puritanical statesmen. For the purpose of the argument it would have been sufficient to show that in existing circumstances the office of public adviser was both thankless and dangerous. We must always remember that when Plato is speaking of past times he is profoundly influenced by aristocratic traditions, and also that under a retrospective disguise he is really attacking contemporary abuses. And if, even then, his denunciations seem excessive, their justification may be found in that continued decay of public virtue which, not long afterwards, brought about the final catastrophe of Athenian independence.
IV.
To illustrate the relation in which Plato stood towards his own times, we have already had occasion to draw largely on the productions of his maturer manhood. We have now to take up the broken thread of our systematic exposition, and to trace the development of his philosophy through that wonderful series of compositions which entitle him to rank among the greatest writers, the most comprehensive thinkers, and the purest religious teachers of all ages. In the presence of such glory a mere divergence of opinion must not be permitted to influence our judgment. High above all particular truths stands the principle that truth itself exists, and it was for this that Plato fought. If there were others more completely emancipated from superstition, none so persistently appealed to the logic before which superstition must ultimately vanish. If his schemes for the reconstruction of society ignore many obvious facts, they assert with unrivalled force the necessary supremacy of public welfare over private pleasure; and their avowed utilitarianism offers a common ground to the rival reformers who will have nothing to do with the mysticism of their metaphysical foundation. Those, again, who hold, like the youthful Plato himself, that the ultimate interpretation of existence belongs to a science transcending human reason, will here find the doctrines of their religion anticipated as in a dream. And even those who, standing aloof both from theology and philosophy, live, as they imagine, for beauty alone, will observe with interest how the spirit of Greek art survived in the denunciation of its idolatry, and ‘the light that never was on sea or land,’ after fading away from the lower levels of Athenian fancy, came once more to suffuse the frozen steeps of dialectic with its latest and divinest rays.
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 Dialogues—one 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 and 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 Socrates—the mastery over men’s 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 its imperial task. We may say of Plato what he has said of his own Theaetêtus, 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.
It will be remembered that in an earlier section of this chapter we accompanied Plato to a period when he had provisionally adopted a theory in which the Protagorean contention that virtue can be taught was confirmed and explained by the Socratic contention that virtue is knowledge; while this knowledge again was interpreted in the sense of a hedonistic calculus, a prevision and comparison of the pleasures and pains consequent on our actions. We have now to trace the lines of thought by which he was guided to a different conception of ethical science.
After resolving virtue into knowledge of pleasure, the next questions which would present themselves to so keen a thinker were obviously, What is knowledge? and What is pleasure? The Theaetêtus is chiefly occupied with a discussion of the various answers already given to the first of these enquiries. It seems, therefore, to come naturally next after the Protagoras; and our conjecture receives a further confirmation when we find that here also a large place is given to the opinions of the Sophist after whom that dialogue is named; the chief difference being that the points selected for controversy are of a speculative rather than of a practical character. There is, however, a close connexion between the argument by which Protagoras had endeavoured to prove that all mankind are teachers of virtue, and his more general principle that man is the measure of all things. And perhaps it was the more obvious difficulties attending the latter view which led Plato, after some hesitation, to reject the former along with it. In an earlier chapter we gave some reasons for believing that Protagoras did not erect every individual into an arbiter of truth in the sweeping sense afterwards put upon his words. He was probably opposing a human to a theological or a naturalistic standard. Nevertheless, it does not follow that Plato was fighting with a shadow when he pressed the Protagorean dictum to its most literal interpretation. There are plenty of people still who would maintain it to that extent. Wherever and whenever the authority of ancient traditions is broken down, the doctrine that one man’s opinion is as good as another’s immediately takes its place; or rather the doctrine in question is a survival of traditionalism in an extremely pulverised form. And when we are told that the majority must be right—which is a very different principle from holding that the majority should be obeyed—we may take it as a sign that the loose particles are beginning to coalesce again. The substitution of an individual for a universal standard of truth is, according to Plato, a direct consequence of the theory which identifies knowledge with sense-perception. It is, at any rate, certain that the most vehement assertors of the former doctrine are also those who are fondest of appealing to what they and their friends have seen, heard, or felt; and the more educated among them place enormous confidence in statistics. They are also fond of repeating the adage that an ounce of fact is worth a ton of theory, without considering that theory alone can furnish the balance in which facts are weighed. Plato does not go very deep into the rationale of observation, nor in the infancy of exact science was it to be expected that he should. He fully recognised the presence of two factors, an objective and a subjective, in every sensation, but lost his hold on the true method in attempting to trace a like dualism through the whole of consciousness. Where we should distinguish between the mental energies and the physical processes underlying them, or between the elements respectively contributed to every cognition by immediate experience and reflection, he conceived the inner and outer worlds as two analogous series related to one another as an image to its original.
At this last point we touch on the final generalisation by which Plato extended the dialectic method to all existence, and readmitted into philosophy the earlier speculations provisionally excluded from it by Socrates. The cross-examining elenchus, at first applied only to individuals, had been turned with destructive effect on every class, every institution, and every polity, until the whole of human life was made to appear one mass of self-contradiction, instability, and illusion. It had been held by some that the order of nature offered a contrast and a correction to this bewildering chaos. Plato, on the other hand, sought to show that the ignorance and evil prevalent among men were only a part of the imperfection necessarily belonging to derivative existence of every kind. For this purpose the philosophy of Heracleitus proved a welcome auxiliary. The pupil of Socrates had been taught in early youth by Cratylus, an adherent of the Ephesian school, that movement, relativity, and the conjunction of opposites are the very conditions under which Nature works. We may conjecture that Plato did not at first detect any resemblance between the Heracleitean flux and the mental bewilderment produced or brought to light by the master of cross-examination. But his visit to Italy would probably enable him to take a new view of the Ionian speculations, by bringing him into contact with schools maintaining a directly opposite doctrine. The Eleatics held that existence remained eternally undivided, unmoved, and unchanged. The Pythagoreans arranged all things according to a strained and rigid antithetical construction. Then came the identifying flash.[132] Unchangeable reality, divine order, mathematical truth—these were the objective counterpart of the Socratic definitions, of the consistency which Socrates introduced into conduct. The Heracleitean system applied to phenomena only; and it faithfully reflected the incoherent beliefs and disorderly actions of uneducated men. We are brought into relation with the fluctuating sea of generated and perishing natures by sense and opinion, and these reproduce, in their irreconcilable diversity, the shifting character of the objects with which they are conversant. Whatever we see and feel is a mixture of being and unreality; it is, and is not, at the same time. Sensible magnitudes are equal or greater or less according as the standard of comparison is chosen. Yet the very act of comparison shows that there is something in ourselves deeper than mere sense; something to which all individual sensations are referred as to a common centre, and in which their images are stored up. Knowledge, then, can no longer be identified with sensation, since the mental reproductions of external objects are apprehended in the absence of their originals, and since thought possesses the further faculty of framing abstract notions not representing any sensible objects at all.
We need not follow Plato’s investigations into the meaning of knowledge and the causes of illusion any further; especially as they do not lead, in this instance, to any positive conclusion. The general tendency is to seek for truth within rather than without; and to connect error partly with the disturbing influence of sense-impressions on the higher mental faculties, partly with the inherent confusion and instability of the phenomena whence those impressions are derived. Our principal concern here is to note the expansive power of generalisation which was carrying philosophy back again from man to Nature—the deep-seated contempt of Plato for public opinion—and the incipient differentiation of demonstrated from empirical truth.
A somewhat similar vein of reflection is worked out in the Cratylus, a Dialogue presenting some important points of contact with the Theaetêtus, and probably belonging to the same period. There is the same constant reference to Heracleitus, whose philosophy is here also treated as in great measure, but not entirely, true; and the opposing system of Parmenides is again mentioned, though much more briefly, as a valuable set-off against its extravagances. The Cratylus deals exclusively with language, just as the Theaetêtus had dealt with sensation and mental imagery, but in such a playful and ironical tone that its speculative importance is likely to be overlooked. Some of the Greek philosophers seem to have thought that the study of things might advantageously be replaced by the study of words, which were supposed to have a natural and necessary connexion with their accepted meanings. This view was particularly favoured by the Heracleiteans, who found, or fancied that they found, a confirmation of their master’s teaching in etymology. Plato professes to adopt the theory in question, and supports it with a number of derivations which to us seem ludicrously absurd, but which may possibly have been transcribed from the pages of contemporary philologists. At last, however, he turns round and shows that other verbal arguments, equally good, might be adduced on behalf of Parmenides. But the most valuable part of the discussion is a protest against the whole theory that things can be studied through their names. Plato justly observes that an image, to be perfect, should not reproduce its original, but only certain aspects of it; that the framers of language were not infallible; and that we are just as competent to discover the nature of things as they could be. One can imagine the delight with which he would have welcomed the modern discovery that sensations, too, are a language; and that the associated groups into which they most readily gather are determined less by the necessary connexions of things in themselves than by the exigencies of self-preservation and reproduction in sentient beings.