The Rhetorical teachers conceived the Art too narrowly: Plato conceived it too widely. The principles of an Art are not required to be explained to all learners.

First, it includes the whole basis of science or theory on which the Art rests: it is a Philosophy of Rhetoric, expounded by a theorist — rather than an Art of Rhetoric, taught to learners by a master. To teach the observance of certain rules or precepts is one thing: to set forth the reasons upon which those rules are founded, is another — highly important indeed, and proper to be known by the teacher; yet not necessarily communicated, or even communicable, to all learners. Quintilian, in his Institutio Rhetorica, gives both:— an ample theory, as well as an ample development of rules, of his professional teaching. But he would not have thought himself obliged to give this ample theory to all learners. With many, he would have been satisfied to make them understand the rules, and to exercise them in the ready observance thereof.

Plato includes in his conception of Art, the application thereof to new particular cases. — This can never be taught by rule.

Secondly, Plato, in defining the Art of Rhetoric, includes not only its foundation of science (which, though intimately connected with it, ought not to be considered as a constituent part), but also the application of it to particular cases; which application lies beyond the province both of science and of art, and cannot be reduced to any rule. “The Rhetor” (says Plato) “must teach his pupils, not merely to observe the rules whereby persuasion is operated, but also to know the particular persons to whom those rules are to be applied — on what occasions — within what limits — at what peculiar moments, &c.114 Unless the Rhetor can teach thus much, his pretended art is no art at all: all his other teaching is of no value.” Now this is an amount of exigence which can never be realised. Neither art nor science can communicate that which Plato here requires. The rules of art, together with many different hypothetical applications thereof, may be learnt: when the scientific explanation of the rules is superadded, the learner will be assisted farther towards fresh applications: but after both these have been learnt, the new cases which will arise can never be specially foreseen. The proper way of applying the general precepts to each case must be suggested by conjecture adapted to the circumstances, under the corrections of past experience.115 It is inconsistent in Plato, after affirming that nothing deserves the name of art116 except what is general — capable of being rationally anticipated and prescribed beforehand — then to include in art the special treatment required for the multiplicity of particular cases; the analogy of the medical art, which he here instructively invokes, would be against him on this point.

Plato’s charge against the Rhetorical teachers is not made out.

While therefore Plato’s view of the science or theory of Rhetoric is far more comprehensive and philosophical than any thing given by the rhetorical teachers — he has not made good his charge against them, that what they taught as an art of Rhetoric was useless and illusory. The charge can only be sustained if we grant — what appears to have been Plato’s own feeling — that the social and political life of the Athenians was a dirty and corrupt business, unworthy of a virtuous man to meddle with. This is the argument of Sokrates (in the Gorgias,117 the other great anti-rhetorical dialogue), proclaiming himself to stand alone and aloof, an isolated, free-thinking dissenter. As representing his sincere conviction, and interpreting Plato’s plan of life, this argument deserves honourable recognition. But we must remember that Lysias and the rhetorical teachers repudiated such a point of view. They aimed at assisting and strengthening others to perform their parts, not in speculative debate on philosophy, but in active citizenship; and they succeeded in this object to a great degree. The rhetorical ability of Lysias personally is attested not merely by the superlative encomium on him assigned to Phædrus,118 but also by his great celebrity — by the frequent demand for his services as a logographer or composer of discourses for others — by the number of his discourses preserved and studied after his death. He, and a fair proportion of the other rhetors named in the Phædrus, performed well the useful work which they undertook.

Plato has not treated Lysias fairly, in neglecting his greater works, and selecting for criticism an erotic exercise for a private circle.

When Plato selects, out of the very numerous discourses before him composed by Lysias, one hardly intended for any real auditors — neither deliberative, nor judicial, nor panegyrical, but an ingenious erotic paradox for a private circle of friends — this is no fair specimen of the author. Moreover Plato criticises it as if it were a philosophic exposition instead of an oratorical pleading. He complains that Lysias does not begin his discourse by defining — but neither do Demosthenes and other great orators proceed in that manner. He affirms that there is no organic structure, or necessary sequence, in the discourse, and that the sentences of it might be read in an inverted order:119 — and this remark is to a certain extent well-founded. In respect to the skilful marshalling of the different parts of a discourse, so as to give best effect to the whole, Dionysius of Halikarnassus120 declares Lysias to be inferior to some other orators — while ascribing to him marked oratorical superiority on various other points. Yet Plato, in specifying his objections against the erotic discourses of Lysias, does not show that it offends against the sound general principle which he himself lays down respecting the art of persuasion — That the topics insisted on by the persuader shall be adapted to the feelings and dispositions of the persuadend. Far from violating this principle, Lysias kept it in view, and employed it to the best of his power — as we may see, not merely by his remaining orations, but also by the testimonies of the critics:121 though he did not go through the large preliminary work of scientific classification, both of different minds and different persuasive apparatus, which Plato considers essential to a thorough comprehension and mastery of the principle.

No fair comparison can be taken between this exercise of Lysias and the discourses delivered by Sokrates in the Phædrus.

The first discourse assigned by Plato to Sokrates professes to be placed in competition with the discourse of Lysias, and to aim at the same object. But in reality it aims at a different object: it gives the dissuasive arguments, but omits the persuasive — as Phædrus is made to point out: so that it cannot be fairly compared with the discourse of Lysias. Still more may this be said respecting the second discourse of Sokrates: which is of a character and purpose so totally disparate, that no fair comparison can be taken between it and the ostensible competitor. The mixture of philosophy, mysticism, and dithyrambic poetry, which the second discourse of Sokrates presents, was considered by a rhetorical judge like Dionysius as altogether inconsistent with the scope and purpose of reasonable discourse.122 In the Menexenus, Plato has brought himself again into competition with Lysias, and there the competition is fairer:123 for Plato has there entirely neglected the exigencies enforced in the Phædrus, and has composed a funeral discourse upon the received type; which Lysias and other orators before him had followed, from Perikles downward. But in the Phædrus, Plato criticises Lysias upon principles which are a medley between philosophy and rhetoric. Lysias, in defending himself, might have taken the same ground as we find Sokrates himself taking in the Euthydêmus. “Philosophy and politics are two distinct walks, requiring different aptitudes, and having each its own practitioners. A man may take whichever he pleases; but he must not arrogate to himself superiority by an untoward attempt to join the two together.”124

Continuous discourse, either written or spoken, inefficacious as a means of instruction to the ignorant.

Another important subject is also treated in the Phædrus. Sokrates delivers views both original and characteristic, respecting the efficacy of continuous discourse — either written to be read, or spoken to be heard without cross-examination — as a means of instruction. They are re-stated — in a manner substantially the same, though with some variety and fulness of illustration — in Plato’s seventh Epistle125 to the surviving friends of Dion. I have already touched upon these views in my eighth Chapter, on the Platonic Dialogues generally, and have pointed out how much Plato understood to be involved in what he termed knowledge. No man (in his view) could be said to know, who was not competent to sustain successfully, and to apply successfully, a Sokratic cross-examination. Now knowledge, involving such a competency, certainly cannot be communicated by any writing, or by any fixed and unchangeable array of words, whether written or spoken. You must familiarise learners with the subject on many different sides, and in relation to many different points of view, each presenting more or less chance of error or confusion. Moreover, you must apply a different treatment to each mind, and to the same mind at different stages: no two are exactly alike, and the treatment adapted for one will be unsuitable for the other. While it is impossible, for these reasons, to employ any set forms of words, it will be found that the process of reading or listening leaves the reader or listener comparatively passive: there is nothing to stir the depths of the mind, or to evolve the inherent forces and dormant capacities. Dialectic conversation is the only process which can adapt itself with infinite variety to each particular case and moment — and which stimulates fresh mental efforts ever renewed on the part of each respondent and each questioner. Knowledge — being a slow result generated by this stimulating operation, when skilfully conducted, long continued, and much diversified — is not infused into, but evolved out of, the mind. It consists in a revival of those unchangeable Ideas or Forms, with which the mind during its state of eternal pre-existence had had communion. There are only a few privileged minds, however, that have had sufficient communion therewith to render such revival possible: accordingly, none but these few can ever rise to knowledge.126

Written matter is useful as a memorandum for persons who know — or as an elegant pastime.

Though knowledge cannot be first communicated by written matters, yet if it has been once communicated and subsequently forgotten, it may be revived by written matters. Writing has thus a real, though secondary, usefulness, as a memorandum. And Plato doubtless accounted written dialogues the most useful of all written compositions, because they imitated portions of that long oral process whereby alone knowledge had been originally generated. His dialogues were reports of the conversations purporting to have been held by Sokrates with others.

Plato’s didactic theories are pitched too high to be realised.

It is an excellent feature in the didactic theories of Plato, that they distinguish so pointedly between the passive and active conditions of the intellect; and that they postulate as indispensable, an habitual and cultivated mental activity, worked up by slow, long-continued, colloquy. To read or hear, and then to commit to memory, are in his view elegant recreations, but nothing more. But while, on this point, Plato’s didactic theories deserve admiration, we must remark on the other hand that they are pitched so high as to exceed human force, and to overpass all possibility of being realised.127 They mark out an idéal, which no person ever attained, either then or since — like the Platonic theory of rhetoric. To be master of any subject, in the extent and perfection required for sustaining and administering a Sokratic cross-examination — is a condition which scarce any one can ever fulfil: certainly no one, except upon a small range of subjects. Assuredly, Plato himself never fulfilled it.

No one has ever been found competent to solve the difficulties raised by Sokrates, Arkesilaus, Karneades, and the negative vein of philosophy.

Such a cross-examination involved the mastery of all the openings for doubt, difficulty, deception, or refutation, bearing on the subject: openings which a man is to profit by, if assailant — to keep guarded, if defendant. Now when we survey the Greek negative philosophy, as it appears in Plato, Aristotle, and Sextus Empiricus — and when we recollect that between the second and the third of these names, there appeared three other philosophers equally or more formidable in the same vein, all whose arguments have perished (Arkesilaus, Karneades, Ænesidêmus) — we shall see that no man has ever been known competent both to strike and parry with these weapons, in a manner so skilful and ready as to amount to knowledge in the Platonic sense. But in so far as such knowledge is attainable or approachable, Plato is right in saying that it cannot be attained except by long dialectic practice. Reading books, and hearing lectures, are undoubtedly valuable aids, but insufficient by themselves. Modern times recede from it even more than ancient. Regulated oral dialectic has become unknown; the logical and metaphysical difficulties — which negative philosophy required to be solved before it would allow any farther progress — are now little heeded, amidst the multiplicity of observed facts, and theories adapted to and commensurate with those facts. This change in the character of philosophy is doubtless a great improvement. It is found that by acquiescing provisionally in the axiomata media, and by applying at every step the control of verification, now rendered possible by the multitude of ascertained facts — the sciences may march safely onward: notwithstanding that the logical and metaphysical difficulties, the puzzles (ἀπορίαι) involved in philosophia prima and its very high abstractions, are left behind unsolved and indeterminate. But though the modern course of philosophy is preferable to the ancient, it is not for that reason to be considered as satisfactory. These metaphysical difficulties are not diminished either in force or relevancy, because modern writers choose to leave them unnoticed. Plato and Aristotle were quite right in propounding them as problems, the solution of which was indispensable to the exigencies and consistent schematism of the theorising intelligence, as well as to any complete discrimination between sufficient and insufficient evidence. Such they still remain, overlooked yet not defunct.

Plato’s idéal philosopher can only be realised under the hypothesis of a pre-existent and omniscient soul, stimulated into full reminiscence here.

Now all these questions would be solved by the idéal philosopher whom Plato in the Phædrus conceives as possessing knowledge: a person who shall be at once a negative Sokrates in excogitating and enforcing all the difficulties — and an affirmative match for Sokrates, as respondent in solving them: a person competent to apply this process to all the indefinite variety of individual minds, under the inspirations of the moment. This is a magnificent idéal. Plato affirms truly, that those teachers who taught rhetoric and philosophy by writing, could never produce such a pupil: and that even the Sokratic dialectic training, though indispensable and far more efficacious, would fail in doing so, unless in those few cases where it was favoured by very superior capacity — understood by him as superhuman, and as a remnant from the pre-existing commerce of the soul with the world of Forms or Ideas. The foundation therefore of the whole scheme rests upon Plato’s hypothesis of an antecedent life of the soul, proclaimed by Sokrates here in his second or panegyrical discourse on Eros. The rhetorical teachers, with whom he here compares himself and whom he despises as aiming at low practical ends — might at any rate reply that they avoided losing themselves in such unmeasured and unwarranted hypotheses.

Different proceeding of Plato in the Timæus.

One remark yet remains to be made upon the doctrine here set forth by Plato: that no teaching is possible by means of continuous discourse spoken or written — none, except through prolonged and varied oral dialectic.128 To this doctrine Plato does not constantly conform in his practice: he departs from it on various important occasions. In the Timæus, Sokrates calls upon the philosopher so named for an exposition on the deepest and most mysterious cosmical subjects. Timæus delivers the exposition in a continuous harangue, without a word of remark or question addressed by any of the auditors: while at the beginning of the Kritias (the next succeeding dialogue) Sokrates greatly commends what Timæus had spoken. The Kritias itself too (though unfinished) is given in the form of continuous exposition. Now, as the Timæus is more abstruse than any other Platonic writing, we cannot imagine that Plato, at the time when he composed it, thought so meanly about continuous exposition, as a vehicle of instruction, as we find him declaring in the Phædrus. I point this out, because it illustrates my opinion that the different dialogues of Plato represent very different, sometimes even opposite, points of view: and that it is a mistake to treat them as parts of one preconceived and methodical system.

Opposite tendencies co-existent in Plato’s mind — Extreme of the Transcendental or Absolute — Extreme of specialising adaptation to individuals and occasions.

We thus find, in Plato’s philosophical character, two extreme opposite tendencies and opposite poles co-existent. We must recognise them both: but they can never be reconciled: sometimes he obeys and follows the one, sometimes the other.

If it had been Plato’s purpose to proclaim and impose upon every one something which he called “Absolute Truth,” one and the same alike imperative upon all — he would best proclaim it by preaching or writing. To modify this “Absolute,” according to the varieties of the persons addressed, would divest it of its intrinsic attribute and excellence. If you pretend to deal with an Absolute, you must turn away your eyes from all diversity of apprehending intellects and believing subjects.

CHAPTER XXVII.

Character of dialogues immediately preceding — much transcendental assertion. Opposite character of the Parmenides.

Sokrates is the juvenile defendant — Parmenides the veteran censor and cross-examiner. Parmenides gives a specimen of exercises to be performed by the philosophical aspirant.

The Parmenides announces its own purpose as intended to repress premature forwardness of affirmation, in a young philosophical aspirant: who, with meritorious eagerness in the search for truth, and with his eyes turned in the right direction to look for it — has nevertheless not fully estimated the obstructions besetting his path, nor exercised himself in the efforts necessary to overcome them. By a curious transposition, or perhaps from deference on Plato’s part to the Hellenic sentiment of Nemesis, — Sokrates, who in most Platonic dialogues stands forward as the privileged censor and victorious opponent, is here the juvenile defendant under censorship by a superior. It is the veteran Parmenides of Elea who, while commending the speculative impulse and promise of Sokrates, impresses upon him at the same time that the theory which he had advanced — the self-existence, the separate and substantive nature, of Ideas — stands exposed to many grave objections, which he (Sokrates) has not considered and cannot meet. So far, Parmenides performs towards Sokrates the same process of cross-examining refutation as Sokrates himself applies to Theætêtus and other young men elsewhere. But we find in this dialogue something ulterior and even peculiar. Having warned Sokrates that his intellectual training has not yet been carried to a point commensurate with the earnestness of his aspirations — Parmenides proceeds to describe to him what exercises he ought to go through, in order to guard himself against premature assertion or hasty partiality. Moreover, Parmenides not only indicates in general terms what ought to be done, but illustrates it by giving a specimen of such exercise, on a topic chosen by himself.

Circumstances and persons of the Parmenides.

Passing over the dramatic introduction1 whereby the personages discoursing are brought together, we find Sokrates, Parmenides, and the Eleatic Zeno (the disciple of Parmenides), engaged in the main dialogue. When Parmenides begins his illustrative exercise, a person named Aristotle (afterwards one of the Thirty oligarchs at Athens), still younger than Sokrates, is made to serve as respondent.

Sokrates is one among various auditors, who are assembled to hear Zeno reading aloud a treatise of his own composition, intended to answer and retort upon the opponents of his preceptor Parmenides.

Manner in which the doctrine of Parmenides was impugned. Manner in which his partisan Zeno defended him.

The main doctrine of the real Parmenides was, “That Ens, the absolute, real, self-existent, was One and not many”: which doctrine was impugned and derided by various opponents, deducing from it absurd conclusions. Zeno defended his master by showing that the opposite doctrine ( — “That Ens, the absolute, self-existent universe, is Many — ”) led to conclusions absurd in an equal or greater degree. If the Absolute were Many, the many would be both like and unlike: but they cannot have incompatible and contradictory attributes: therefore Absolute Ens is not Many. Ens, as Parmenides conceived it, was essentially homogeneous and unchangeable: even assuming it to be Many, all its parts must be homogeneous, so that what was predicable of one must be predicable of all; it might be all alike, or all unlike: but it could not be both. Those who maintained the plurality of Ens, did so on the ground of apparent severalty, likeness, and unlikeness, in the sensible world. But Zeno, while admitting these phenomena in the sensible world, as relative to us, apparent, and subject to the varieties of individual estimation — denied their applicability to absolute and self-existent Ens.2 Since absolute Ens or Entia are Many (said the opponents of Parmenides), they will be both like and unlike: and thus we can explain the phenomena of the sensible world. The absolute (replied Zeno) cannot be both like and unlike; therefore it cannot be many. We must recollect that both Parmenides and Zeno renounced all attempt to explain the sensible world by the absolute and purely intelligible Ens. They treated the two as radically distinct and unconnected. The one was absolute, eternal, unchangeable, homogeneous, apprehended only by reason. The other was relative, temporary, variable, heterogeneous; a world of individual and subjective opinion, upon which no absolute truth, no pure objectivity, could be reached.