Page - 781 - in The Complete Plato

STRANGER: And we shall find this to be generally true of art or the absence of art. THEAETETUS: Of course. STRANGER: And as classes are admitted by us in like manner to be some of them capable and others incapable of intermixture, must not he who would rightly show what kinds will unite and what will not, proceed by the help of science in the path of argument? And will he not ask if the connecting links are universal, and so capable of intermixture with all things; and again, in divisions, whether there are not other universal classes, which make them possible? THEAETETUS: To be sure he will require science, and, if I am not mistaken, the very greatest of all sciences. STRANGER: How are we to call it? By Zeus, have we not lighted unwittingly upon our free and noble science, and in looking for the Sophist have we not entertained the philosopher unawares? THEAETETUS: What do you mean? STRANGER: Should we not say that the division according to classes, which neither makes the same other, nor makes other the same, is the business of the dialectical science? THEAETETUS: That is what we should say. STRANGER: Then, surely, he who can divide rightly is able to see clearly one form pervading a scattered multitude, and many different forms contained under one higher form; and again, one form knit together into a single whole and pervading many such wholes, and many forms, existing only in separation and isolation. This is the knowledge of classes which determines where they can have communion with one another and where not. THEAETETUS: Quite true. STRANGER: And the art of dialectic would be attributed by you only to the philosopher pure and true? THEAETETUS: Who but he can be worthy? STRANGER: In this region we shall always discover the philosopher, if we look for him; like the Sophist, he is not easily discovered, but for a different reason. THEAETETUS: For what reason? STRANGER: Because the Sophist runs away into the darkness of not- being, in which he has learned by habit to feel about, and cannot be 781