Plato and the Other Companions of Sokrates, 3rd ed. Volume 1

If this memorable dialogue, with its concluding string of elaborate antinomies, had come down to us under the name of Eukleides, historians would probably have denounced it as a perverse exhibition of ingenuity, worthy of “that litigious person, who first infused into the Megarians the fury of disputation”.32 But since it is of Platonic origin, we must recognise Plato not only as having divided with the Megaric philosophers the impulse of negative speculation which they had inherited from Sokrates, but as having carried that impulse to an extreme point of invention, combination, and dramatic handling, much beyond their powers. Undoubtedly, if we pass from the Parmenidês to other dialogues, we find Plato very different. He has various other intellectual impulses, an abundant flow of ideality and of constructive fancy, in many distinct channels. But negative philosophy is at least one of the indisputable and prominent items of the Platonic aggregate.

While then we admit that the Megaric succession of philosophers exhibited negative subtlety and vehement love of contentious debate, we must recollect that these qualities were inherited from Sokrates and shared with Plato. The philosophy of Sokrates, who taught nothing and cross-examined every one, was essentially more negative and controversial, both in him and his successors, than any which had preceded it. In an age when dialectic colloquy was considered as appropriate for philosophical subjects, and when long continuous exposition was left to the rhetor — Eukleides established a succession or school33 which was more distinguished for impugning dogmas of others than for defending dogmas of its own. Schleiermacher and others suppose that Plato in his dialogue Euthydêmus intends to expose the sophistical fallacies of the Megaric school:34 and that in the dialogue Sophistês, he refutes the same philosophers (under the vague designation of “the friends of Forms”) in their speculations about Ens and Non-Ens. The first of these two opinions is probably true to some extent, though we cannot tell how far: the second of the two is supported by some able critics — yet it appears to me untenable.35

Of Eukleides himself, though he is characterised as strongly controversial, no distinct points of controversy have been preserved: but his successor Eubulides is celebrated for various sophisms. He was the contemporary and rival of Aristotle: who, without however expressly naming him, probably intends to speak of him when alluding to the Megaric philosophers generally.36 Another of the same school, Alexinus (rather later than Eubulides) is also said to have written against Aristotle.

Six sophisms are ascribed to Eubulides. 1. — Ὁ ψευδόμενος — Mentiens. 2. — Ὁ διαλανθάνων, or ἐγκεκαλυμμένος — the person hidden under a veil. 3. — Ἠλέκτρα. 4. — Σωρείτης — Sorites. 5. — Κερατίνης — Cornutus. 6. — Φάλακρος — Calvus. Of these the second is substantially the same with the third; and the fourth the same with the sixth, only inverted.37

These sophisms are ascribed to Eubulides, and belonged probably to the Megaric school both before and after him. But it is plain both from the Euthydêmus of Plato, and from the Topica of Aristotle, that there were many others of similar character; frequently employed in the abundant dialectic colloquies which prevailed at Athens during the fourth and third centuries B.C. Plato and Aristotle handle such questions and their authors contemptuously, under the name of Eristic: but it was more easy to put a bad name upon them, as well as upon the Eleate Zeno, than to elucidate the logical difficulties which they brought to view. Neither Aristotle nor Plato provided a sufficient answer to them: as is proved by the fact, that several subsequent philosophers wrote treatises expressly in reference to them — even philosophers of reputation, like Theophrastus and Chrysippus.38 How these two latter philosophers performed their task, we cannot say. But the fact that they attempted the task, exhibits a commendable anxiety to make their logical theory complete, and to fortify it against objections.

It is in this point of view — in reference to logical theory — that the Megaric philosophers have not been fairly appreciated. They, or persons reasoning in their manner, formed one essential encouragement and condition to the formation of any tolerable logical theory. They administered, to minds capable and constructive, that painful sense of contradiction, and shock of perplexity, which Sokrates relied upon as the stimulus to mental parturition — and which Plato extols as a lever for raising the student to general conceptions.39 Their sophisms were not intended to impose upon any one, but on the contrary, to guard against imposition.40 Whoever states a fallacy clearly and nakedly, applying it to a particular case in which it conducts to a conclusion known upon other evidence not to be true — contributes to divest it of its misleading effect. The persons most liable to be deceived by the fallacy are those who are not forewarned:—in cases where the premisses are stated not nakedly, but in an artful form of words — and where the conclusion, though false, is not known beforehand to be false by the hearer. To use Mr. John Stuart Mill’s phrase,41 the fallacy is a case of apparent evidence mistaken for real evidence: you expose it to be evidence only apparent and not real, by giving a type of the fallacy, in which the conclusion obtained is obviously false: and the more obviously false it is, the better suited for its tutelary purpose.

Aristotle recognises, as indispensable in philosophical enquiry, the preliminary wrestling into which he conducts his reader, by means of a long string of unsolved difficulties or puzzles — (ἀπόριαι). He declares distinctly and forcibly, that whoever attempts to lay out a positive theory, without having before his mind a full list of the difficulties with which he is to grapple, is like one who searches without knowing what he is looking for; without being competent to decide whether what he hits upon as a solution be really a solution or not.42 Now that enumeration of puzzles which Aristotle here postulates (and in part undertakes, in reference to Philosophia Prima) is exactly what the Megarics, and various other dialecticians (called by Plato and Aristotle Sophists) contributed to furnish for the use of those who theorised on Logic.

You may dislike philosophy: you may undervalue, or altogether proscribe, the process of theorising. This is the standing-point usual with the bulk of mankind, ancient as well as modern: who generally dislike all accurate reasoning, or analysis and discrimination of familiar abstract words, as mean and tiresome hair-splitting.43 But if you admit the business of theorising to be legitimate, useful, and even honourable, you must reckon on free working of independent, individual, minds as the operative force — and on the necessity of dissentient, conflicting, manifestations of this common force, as essential conditions to any successful result. Upon no other conditions can you obtain any tolerable body of reasoned truth — or even reasoned quasi-truth.

Now the historians of philosophy seldom take this view of philosophy as a whole — as a field to which the free antithesis of affirmative and negative is indispensable. They consider true philosophy as represented by Sokrates, Plato, and Aristotle, one or other of them: while the contemporaries of these eminent men are discredited under the name of Sophists, Eristics, or sham-philosophers, sowing tares among the legitimate crop of wheat — or as devils whom the miraculous virtue of Sokrates and Plato is employed in expelling from the Athenian mind. Even the companions of Sokrates, and the Megarics among them, whom we know only upon the imperfect testimony of opponents, have fallen under this unmerited sentence:44 as if they were destructive agents breaking down an edifice of well-constituted philosophy — no such edifice in fact having ever existed in Greece, though there were several dissenting lecture rooms and conflicting veins of speculation promoted by eminent individuals.