The Platonic Dialogue is the literary transformation, in a word, of what was the intimately home-grown method of Socrates, not only of conveying truth to others, but of coming by it for himself. The essence of that method, of "dialectic" in all its forms, as its very name denotes, is dialogue, the habit of seeking truth by means of question and answer, primarily with one's self. Just there, lies the validity of the method—in a dialogue, an endless dialogue, with one's self; a dialogue concerning those first principles, or "universal definitions," or notions, those "ideas," which, according to Plato, are the proper objects of all real knowledge; concerning the adequacy of one's hold upon them; the relationship to them of other notions; the plausible conjectures in our own or other minds, [178] which come short of them; the elimination, by their mere presence in the mind, of positive ignorance or error. Justice, Beauty, Perfect Polity, and the like, in outlines of eternal and absolute certainty:—they were to be apprehended by "dialectic," literally, by a method (methodos)+ a circuitous journey, presented by the Platonic dialogues in its most accomplished literary form.

For the certainty, the absolute and eternal character, of such ideas involved, with much labour and scruple, repeated acts of qualification and correction; many readjustments to experience; expansion, by larger lights from it; those exclusions and inclusions, debitae naturae (to repeat Bacon's phrase) demanded, that is to say, by the veritable nature of the facts which those ideas are designed to represent. "Representation" was, in fact, twofold, and comprehended many successive steps under each of its divisions. The thought was to be adjusted, first, to the phenomena, to the facts, daintily, to the end that the said thought might just cover those facts, and no more. To the thought, secondly, to the conception, thus articulated, it was necessary to adjust the term; the term, or "definition," by which it might be conveyed into the mind of another. The dialogue—the freedom, the variety and elasticity, of dialogue, informal, easy, natural, alone afforded the room necessary for that long and complex process. If one, if Socrates, seemed to become [179] the teacher of another, it was but by thinking aloud for a few moments over his own lesson, or leaning upon that other as he went along that difficult way which each one must really prosecute for himself, however full such comradeship might be of happy occasions for the awakening of the latent knowledge, with which mind is by nature so richly stored. The Platonic Socrates, in fact, does not propose to teach anything: is but willing, "along with you," and if you concur, "to consider, to seek out, what the thing may be. Perchance using our eyes in common, rubbing away, we might cause Justice, for instance, to glint forth, as from fire-sticks."*

"And," again, "is not the road to Athens made for conversation?" Yes! It might seem that movement, after all, and any habit that promoted movement, promoted the power, the successes, the fortunate parturition, of the mind. A method such as this, a process (processus) a movement of thought, which is the very converse of mathematical or demonstrative reasoning, and incapable therefore of conventional or scholastic form, of "exactness," in fact; which proceeded to truth, not by the analysis and application of an axiom, but by a gradual suppression of error, of error in the form of partial or exaggerated truths on the subject- matter proposed, found its proper [180] literary vehicle in a dialogue, the more flexible the better. It was like a journey indeed, that essay towards Justice, for example, or the true Polity; a journey, not along the simple road to Athens, but to a mountain's top. The proportions, the outline, the relation of the thing to its neighbours,—how do the inexperienced in such journeys mistake them, as they climb! What repeated misconceptions, embodying, one by one, some mere particularity of view, the perspective of this or that point of view, forthwith abandoned, some apprehension of mountain form and structure, just a little short, or, it may be, immeasurably short, of what Plato would call the "synoptic" view of the mountain as a whole. From this or that point, some insignificant peak presented itself as the mountain's veritable crest: inexperience would have sworn to the truth of a wholly illusive perspective, as the next turn in the journey assured one. It is only upon the final step, with free view at last on every side, uniting together and justifying all those various, successive, partial apprehensions of the difficult way—only on the summit, comes the intuitive comprehension of what the true form of the mountain really is; with a mental, or rather an imaginative hold upon which, for the future, we can find our way securely about it; observing perhaps that, next to that final intuition, the first view, the first impression, had been truest about it.

[181] Such, in its full scope, is the journey or pilgrimage, the method (hodos, kinêsis, methodos)+ of the Socratic, of the perfected Platonic dialectic, towards the truth, the true knowledge, of Bravery or Friendship, for instance; of Space or Motion, again, as suggested in the seventh book of The Republic; of the ideal City, of the immaculate Beauty. You are going about Justice, for example—that great complex elevation on the level surface of life, whose top, it may be, reaches to heaven. You fancy you have grasped its outline. Alla metathômetha.+ You are forced on, perhaps by your companion, a step further, and the view has already changed. "Persevere," Plato might say, "and a step may be made, upon which, again, the whole world around may change, the entire horizon and its relation to the point you stand on—a change from the half-light of conjecture to the full light of indefectible certitude." That, of course, can only happen by a summary act of intuition upon the entire perspective, wherein all those partial apprehensions, which one by one may have seemed inconsistent with each other, find their due place, or (to return to the Platonic Dialogue again, to the actual process of dialectic as there exposed) by that final impression of a subject, a theorem, in which the mind attains a hold, as if by a single imaginative act, through all the transitions of a long conversation, upon all the seemingly opposite contentions of all the various speakers at once. We see already why [182] Platonic dialectic—the ladder, as Plato thinks, by which alone we can ascend into the entirely reasonable world (noêtos topos)+ beginning with the boyish difficulties and crudities of Meno, for instance, is a process which may go on, at least with those gifted by nature and opportunity, as in the Perfect City,—may go on to the close of life, and, as Pythagorean theory suggests, perhaps does not end even then.

The process of dialectic, as represented in the Platonic Dialogues, may seem, therefore, inconsistent with itself, if you isolate this or that particular movement, in what is a very complex process, with many phases of development. It is certainly difficult, and that not merely on a first reading, to grasp the unity of the various statements Plato has made about it. Now it may seem to differ from ordinary reasoning by a certain plausibility only: it is logic, plus persuasion; helping, gently enticing, a child out of his natural errors; carefully explaining difficulties by the way, as one can best do, by question and answer with him; above all, never falling into the mistake of the obscurum per obscurius. At another time it may seem to aim at plausibility of another sort; at mutual complaisance, as Thrasymachus complains. It would be possible, of course, to present an insincere dialogue, in which certain of the disputants shall be mere men of straw. In the Philebus again, dialectic is only the name of the process (described there [183] as exactly, almost as technically, as Aristotle, or some modern master of applied logic, might describe it) of the resolution of a genus into its species. Or it lapses into "eristic"—into an argument for its own sake; or sinks into logomachy, a mere dispute about words. Or yet again, an immense, a boundless promise is made for it, as in the seventh book of The Republic. It is a life, a systematised, but comprehensive and far-reaching, intellectual life, in which the reason, nay, the whole nature of man, realises all it was designed to be, by the beatific "vision of all time and all existence."

Now all these varying senses of the word "dialectic" fall within compass, if we remember that for Plato, as for every other really philosophic thinker, method must be one; that it must cover, or be understood to cover, the entire process, all the various processes, of the mind, in pursuit of properly representative ideas, of a reasoned reflex of experience; and that for Plato, this process is essentially a long discourse or reasoning of the mind with itself. It is that dynamic, or essential, dialogue of the mind with itself, which lends, or imputes, its active principle to the written or spoken dialogue, which, in return, lends its name to the method it figures— "dialectic." Well! in that long and complex dialogue of the mind with itself, many persons, so to speak, will necessarily take part; so many persons as there are possible contrasts or shades [184] in the apprehension of some complex subject. The advocatus diaboli will be heard from time to time. The dog also, or, as the Greeks said, the wolf, will out with his story against the man; and one of the interlocutors will always be a child, turning round upon us innocently, candidly, with our own admissions, or surprising us, perhaps at the last moment, by what seems his invincible ignorance, when we thought it rooted out of him. There will be a youth, inexperienced in the capacities of language, who will compel us to allow much time to the discussion of words and phrases, though not always unprofitably. And to the last, let us hope, refreshing with his enthusiasm, the weary or disheartened enquirer (who is always also of the company) the rightly sanguine youth, ingenuous and docile, to whom, surely, those friendly living ideas will be willing, longing, to come, after that Platonic law of affinity, so effectual in these matters—homoion homoiô.+

With such a nature above all, bringing with it its felicities of temperament, with the sort of natures (as we may think) which intellectually can but thrive, a method like that, the dialectic method, will also have its felicities, its singular good fortunes. A voyage of discovery, prosecuted almost as if at random, the Socratic or Platonic "dialogue of enquiry," seems at times to be in charge of a kind of "Providence." Or again, it will be as when hunters or bird- catchers "beat [185] the bush," as we say: Plato elaborates that figure in The Republic. Only, if they be knowing in the process, a fair percentage of birds will be found and taken. All the chances, or graces, of such a method, as actually followed in a whole life of free enquiry, The Republic, for a watchful reader, represents in little. And when, using still another figure, Socrates says: "I do not yet know, myself; but, we must just go where the argument carries us, as a vessel runs before the wind," he breathes the very soul of the "dialectic method":—hopê an ho logos, hôsper pneuma, pherê, tautê iteon.+

This dialectic method, this continuous discourse with one's self, being, for those who prosecute it with thoroughness, co-extensive with life itself—a part of the continuous company we keep with ourselves through life—will have its inequalities; its infelicities; above all, its final insecurity. "We argue rashly and adventurously," writes Plato, most truly, in the Timaeus—aye, we, the Platonists, as such, sometimes—"by reason that, like ourselves, our discourses (our Platonic discourses, as such) have much participation in the temerity of chance." Of course, as in any other occasional conversation, with its dependence on the hour and the scene, the persons we are with, the humours of the moment, there will always be much of accident in this essentially informal, this un-methodical, [186] method; and, therefore, opportunities for misuse, sometimes consciously. The candid reader notes instances of such, even in The Republic, not always on the part of Thrasymachus:—in this "new game of chess," played, as Plato puts it, not with counters, but with words, and not necessarily for the prize of truth, but, it may be, for the mere enjoyment of move and counter-move, of check-mating.

Since Zeno's paradoxes, in fact, the very air of Athens was become sophisticated, infected with questionings, often vain enough; and the Platonic method had been, in its measure, determined by (the unfriendly might say, was in truth only a deposit from) that infected air. "Socrates," as he admits, "is easily refuted. Say rather, dear Agathon, that you cannot refute the truth." That is reassuring, certainly! For you might think sometimes, uneasily, of the Platonic Socrates, that, as he says of the Sophist, or of himself perhaps en caricature, in the Euthydemus, "Such is his skill in the war of words, that he can refute any proposition whatever, whether true or false"; that, in short, there is a dangerous facility abroad for proving all things whatever, equally well, of which Socrates, and his presumable allotment of truth, has but the general allotment.

The friendly, on the other hand, might rejoin even then, that, as Lessing suggests, the search for truth is a better thing for us than its possession.