(b) But, secondly, the imitator will commonly be least capable of understanding or imitating that part of a great writer which is most characteristic of him. In every man’s writings there is something like himself and unlike others, which gives individuality. To appreciate this latent quality would require a kindred mind, and minute study and observation. There are a class of similarities which may be called undesigned coincidences, which are so remote as to be incapable of being borrowed from one another, and yet, when they are compared, find a natural explanation in their being the work of the same mind. The imitator might copy the turns of style—he might repeat images or illustrations, but he could not enter into the inner circle of Platonic philosophy. He would understand that part of it which became popular in the next generation, as for example, the doctrine of ideas or of numbers: he might approve of communism. But the higher flights of Plato about the science of dialectic, or the unity of virtue, or a person who is above the law, would be unintelligible to him.
(c) The argument from imitation assumes a different character when the supposed imitations are associated with other passages having the impress of original genius. The strength of the argument from undesigned coincidences of style is much increased when they are found side by side with thoughts and expressions which can only have come from a great original writer. The great excellence, not only of the whole, but even of the parts of writings, is a strong proof of their genuineness—for although the great writer may fall below, the forger or imitator cannot rise much above himself. Whether we can attribute the worst parts of a work to a forger and the best to a great writer—as for example, in the case of some of Shakespeare’s plays—depends upon the probability that they have been interpolated, or have been the joint work of two writers; and this can only be established either by express evidence or by a comparison of other writings of the same class. If the interpolation or double authorship of Greek writings in the time of Plato could be shown to be common, then a question, perhaps insoluble, would arise, not whether the whole, but whether parts of the Platonic dialogues are genuine, and, if parts only, which parts. Hebrew prophecies and Homeric poems and Laws of Manu may have grown together in early times, but there is no reason to think that any of the dialogues of Plato is the result of a similar process of accumulation. It is therefore rash to say with Oncken (Die Staatslehre des Aristoteles) that the form in which Aristotle knew the Laws of Plato must have been different from that in which they have come down to us.
It must be admitted that these principles are difficult of application. Yet a criticism may be worth making which rests only on probabilities or impressions. Great disputes will arise about the merits of different passages, about what is truly characteristic and original or trivial and borrowed. Many have thought the Laws to be one of the greatest of Platonic writings, while in the judgment of Mr. Grote they hardly rise above the level of the forged epistles. The manner in which a writer would or would not have written at a particular time of life must be acknowledged to be a matter of conjecture. But enough has been said to show that similarities of a certain kind, whether criticism is able to detect them or not, may be such as must be attributed to an original writer, and not to a mere imitator.
(d) Applying these principles to the case of the Laws, we have now to point out that they contain the class of refined or unconscious similarities which are indicative of genuineness. The parallelisms are like the repetitions of favourite thoughts into which everyone is apt to fall unawares in conversation or in writing. They are found in a work which contains many beautiful and remarkable passages, as will be admitted by anyone who refers back to § III 5, 6. We may therefore begin by claiming this presumption in their favour. Such undesigned coincidences, as we may venture to call them, are the following. The conception of justice as the union of temperance, wisdom, courage (Laws I 631 C; Republic IV 433): the latent idea of dialectic implied in the notion of dividing laws after the kinds of virtue (Laws I 630 E); and again (Laws XII 965 C) the approval of the method of looking at one idea gathered from many things, “than which a truer was never discovered by any man” (compare Republic VII 525 A):
