Protarchus: We will suppose such a man.
Socrates: Will he have enough of knowledge if he is acquainted only with the divine circle and sphere, and knows nothing of our human spheres and circles, but uses only divine circles and measures in the building of a house?
Protarchus: The knowledge which is only superhuman, Socrates, is ridiculous in man.
Socrates: What do you mean? Do you mean that you are to throw into the cup and mingle the impure and uncertain art which uses the false measure and the false circle?
Protarchus: Yes, we must, if any of us is ever to find his way home.
Socrates: And am I to include music, which, as I was saying just now, is full of guesswork and imitation, and is wanting in purity?
Protarchus: Yes, I think that you must, if human life is to be a life at all.
Socrates: Well, then, suppose that I give way, and, like a doorkeeper who is pushed and overborne by the mob, I open the door wide, and let knowledge of every sort stream in, and the pure mingle with the impure?
Protarchus: I do not know, Socrates, that any great harm would come of having them all, if only you have the first sort.
Socrates: Well, then, shall I let them all flow into what Homer poetically terms “a meeting of the waters”?
Protarchus: By all means.
Socrates: There—I have let them in, and now I must return to the fountain of pleasure. For we were not permitted to begin by mingling in a single stream the true portions of both according to our original intention; but the love of all knowledge constrained us to let all the sciences flow in together before the pleasures.
Protarchus: Quite true.
Socrates: And now the time has come for us to consider about the pleasures also, whether we shall in like manner let them go all at once, or at first only the true ones.
Protarchus: It will be by far the safer course to let flow the true ones first.
Socrates: Let them flow, then; and now, if there are any necessary pleasures, as there were arts and sciences necessary, must we not mingle them?
Protarchus: Yes; the necessary pleasures should certainly be allowed to mingle.
Socrates: The knowledge of the arts has been admitted to be innocent and useful always; and if we say of pleasures in like manner that all of them are good and innocent for all of us at all times, we must let them all mingle?
Protarchus: What shall we say about them, and what course shall we take?
Socrates: Do not ask me, Protarchus; but ask the daughters of pleasure and wisdom to answer for themselves.
Protarchus: How?
Socrates: Tell us, O beloved—shall we call you pleasures or by some other name?—would you rather live with or without wisdom? I am of opinion that they would certainly answer as follows:
Protarchus: How?
Socrates: They would answer, as we said before, that for any single class to be left by itself pure and isolated is not good, nor altogether possible; and that if we are to make comparisons of one class with another and choose, there is no better companion than knowledge of things in general, and likewise the perfect knowledge, if that may be, of ourselves in every respect.
Protarchus: And our answer will be:—In that ye have spoken well.