STRANGER: Will you then forgive me, and, as your words imply, not be altogether displeased if I flinch a little from the grasp of such a sturdy argument? THEAETETUS: To be sure I will. STRANGER: I have a yet more urgent request to make. THEAETETUS: Which is--? STRANGER: That you will promise not to regard me as a parricide. THEAETETUS: And why? STRANGER: Because, in self-defence, I must test the philosophy of my father Parmenides, and try to prove by main force that in a certain sense not-being is, and that being, on the other hand, is not. THEAETETUS: Some attempt of the kind is clearly needed. STRANGER: Yes, a blind man, as they say, might see that, and, unless these questions are decided in one way or another, no one when he speaks of false words, or false opinion, or idols, or images, or imitations, or appearances, or about the arts which are concerned with them; can avoid falling into ridiculous contradictions. THEAETETUS: Most true. STRANGER: And therefore I must venture to lay hands on my father's argument; for if I am to be over-scrupulous, I shall have to give the matter up. THEAETETUS: Nothing in the world should ever induce us to do so. STRANGER: I have a third little request which I wish to make. THEAETETUS: What is it? STRANGER: You heard me say what I have always felt and still feel--that I have no heart for this argument? THEAETETUS: I did. STRANGER: I tremble at the thought of what I have said, and expect that you will deem me mad, when you hear of my sudden changes and shiftings; let me therefore observe, that I am examining the question entirely out of regard for you. THEAETETUS: There is no reason for you to fear that I shall impute any impropriety to you, if you attempt this refutation and proof; take heart, therefore, and proceed. STRANGER: And where shall I begin the perilous enterprise? I think that the road which I must take is-- THEAETETUS: Which?--Let me hear. STRANGER: I think that we had better, first of all, consider the points which at present are regarded as self-evident, lest we may have fallen into some confusion, and be too ready to assent to one another, fancying that we are quite clear about them. THEAETETUS: Say more distinctly what you mean. STRANGER: I think that Parmenides, and all ever yet undertook to determine the number and nature of existences, talked to us in rather a light and easy strain. THEAETETUS: How?