Here Colotes, sycophant-like, catching at his expressions and drawing the discourse from things to words, flatly affirms that Parmenides in one word destroys the existence of all things by supposing ENS (or that which is) to be one. But, on the contrary, he takes away neither the one nor the other part of Nature; but rendering to each of them what belongs to it and is convenient for it, he places the intelligible in the idea of one and of "that which is," calling it ENS because it is eternal and incorruptible, and one because it is always like itself and admits no diversity. And as for that part which is sensible, he places it in the rank of uncertain, disorderly, and always moving. Of which two parts, we may see the distinct judgment:—
One certain truth and sincere knowledge is,
as regarding that which is intelligible, and always alike and of the same sort;
The other does on men's opinions rest,
Which breed no true belief within our breast,
because it is conversant in things which receive all sorts of changes, passions, and inequalities. Now how he could have left sense and opinion, if he had not also left any sensible and opinable object, it is impossible for any man to say. But because to that which truly IS it appertains to continue in its being, and because sensible things sometimes are, sometimes are not, continually passing from one being to another and perpetually changing their state, he thought they required some other name than that of ENTIA, or things which always are. This speech therefore concerning ENS (or that which is), that it should be but one, is not to take away the plurality of sensible things, but to show how they differ from that which is intelligible. Which difference Plato in his discussion of Ideas more fully declaring, has thereby afforded Colotes an opportunity of cavilling.
Therefore it seems not unfitting to me to take next into our consideration, as it were all in a train, what he has also said against him. But first let us contemplate a little the diligence—together with the manifold and profound knowledge—of this our philosopher, who says, that Aristotle, Xenocrates, Theophrastus, and all the Peripateties have followed these doctrines of Plato. For in what corner of the uninhabitable world have you, O Colotes, written your book, that, composing all these accusations against such personages, you never have lighted upon their works, nor have taken into your hands the books of Aristotle concerning Heaven and the Soul, nor those of Theophrastus against the Naturalists, nor the Zoroaster of Heraclides, nor his books of Hell, nor that of Natural Doubts and Difficulties, nor the book of Dicaearchus concerning the Soul; in all which books they are in the highest degree contradictory and repugnant to Plato about the principal and greatest points of natural philosophy? Nay, Strato himself, the very head and prince of the other Peripatetics, agrees not in many things with Aristotle, and holds opinions altogether contrary to Plato, concerning motion, the understanding, the soul, and generation. In fine, he says that the world is not an animal, and that what is according to Nature follows what is according to Fortune; for that Chance gave the beginning, and so every one of the natural effects was afterwards finished.
Now as to the ideas,—for which he quarrels with Plato,—Aristotle, by moving this matter at every turn, and alleging all manner of doubts concerning them, in his Ethics, in his Physics, and in his Exoterical Dialogues seems to some rather obstinately than philosophically to have disputed against these doctrines, as having proposed to himself the debasing and undervaluing of Plato's philosophy; so far he was from following it. What an impudent rashness then is this, that having neither seen nor understood what these persons have written and what were their opinions, he should go and devise such things as they never imagined; and persuading himself that he reprehends and refutes others, he should produce a proof, written with his own hand, arguing and convincing himself of ignorance, licentiousness, and shameful impudence, in saying that those who contradict Plato agree with him, and that those who oppose him follow him.
Plato, says he, writes that horses are in vain by us considered horses, and men men. And in which of Plato's commentaries has he found this hidden? For as to us, we read in all his books, that horses are horses, that men are men, and that fire is by him esteemed fire, because he holds that every one of these things is sensible and subject to opinion. But this Colotes, as if he were not a hair's breadth distance from wisdom, takes it to be one and the same thing to say, "Man is not" and "Man is a NON ENS."
Now to Plato there seems to be a wonderful great difference between not being at all and being a NON ENS; because the first imports an annihilation and abolishment of all substance, and the other shows the diversity there is between that which is participated and that which participates. Which diversity those who came after distinguished only into the difference of genus and species, and certain common and proper qualities or accidents, as they are called, but ascended no higher, falling into more logical doubts and difficulties. Now there is the same proportion between that which is participated and that which participates, as there is between the cause and the matter, the original and the image, the faculty and the result. Wherein that which is by itself and always the same principally differs from that which is by another and never remains in one and the same manner; because the one never was nor ever shall be non-existent, and is therefore totally and essentially an ENS; but to the other that very being, which it has not of itself but happens to take by participation from another, does not remain firm and constant, but it goes out of it by its imbecility,—the matter always gliding and sliding about the form, and receiving several functions and changes in the image of the substance, so that it is continually moving and shaking. As therefore he who says that the image of Plato is not Plato takes not away the sense and substance of the image, but shows the difference of that which is of itself from that which is only in regard to some other, so neither do they take away the nature, use, or sense of men, who affirm that every one of us, by participating in a certain common substratum, that is, in the idea, is become the image of that which afforded the likeness for our generation. For neither does he who says that a red-hot iron is not fire, or that the moon is not the sun, but, as Parmenides has it,
A torch which round the earth by night
Does bear about a borrowed light,