Parmenides

Ceph. I see, said Socrates, and I accept your explanation. But tell me, do you not believe there is an idea of likeness in the abstract, and another idea of unlikeness, the opposite of the first, and that you and I and all things which we call many partake of these two? And that those which partake of likeness become like, and those which partake of unlikeness become unlike, and those which partake of both become both like and unlike, all in the manner and degree of their participation? And even if all things partake of both opposites, and are enabled by their participation to be both like and unlike themselves, what is there wonderful about that? For if anyone showed that the absolute like becomes unlike, or the unlike like, that would, in my opinion, be a wonder; but if he shows that things which partake of both become both like and unlike, that seems to me, Zeno, not at all strange, not even if he shows that all things are one by participation in unity and that the same are also many by participation in multitude; but if he shows that absolute unity is also many and the absolute many again are one, then I shall be amazed. The same applies to all other things. If he shows that the kinds and ideas in and by themselves possess these opposite qualities, it is marvellous but if he shows that I am both one and many, what marvel is there in that? He will say, when he wishes to show that I am many, that there are my right parts and my left parts, my front parts and my back parts, likewise upper and lower, all different; for I do, I suppose, partake of multitude; and when he wishes to show that I am one, he will say that we here are seven persons, of whom I am one, a man, partaking also of unity and so he shows that both assertions are true. If anyone then undertakes to show that the same things are both many and one—I mean such things as stones, sticks, and the like—we shall say that he shows that they are many and one, but not that the one is many or the many one; he says nothing wonderful, but only what we should all accept. If, however, as I was saying just now, he first distinguishes the abstract ideas, such as likeness and unlikeness, multitude and unity, rest and motion, and the like, and then shows that they can be mingled and separated, I should, said he, be filled with amazement, Zeno.