Dialogues of Plato - MobileReference [864]
STRANGER: Yes, we must, if we can. And therefore let us try another track in our pursuit of him: You are aware that there are certain menial occupations which have names among servants?
THEAETETUS: Yes, there are many such; which of them do you mean?
STRANGER: I mean such as sifting, straining, winnowing, threshing.
THEAETETUS: Certainly.
STRANGER: And besides these there are a great many more, such as carding, spinning, adjusting the warp and the woof; and thousands of similar expressions are used in the arts.
THEAETETUS: Of what are they to be patterns, and what are we going to do with them all?
STRANGER: I think that in all of these there is implied a notion of division.
THEAETETUS: Yes.
STRANGER: Then if, as I was saying, there is one art which includes all of them, ought not that art to have one name?
THEAETETUS: And what is the name of the art?
STRANGER: The art of discerning or discriminating.
THEAETETUS: Very good.
STRANGER: Think whether you cannot divide this.
THEAETETUS: I should have to think a long while.
STRANGER: In all the previously named processes either like has been separated from like or the better from the worse.
THEAETETUS: I see now what you mean.
STRANGER: There is no name for the first kind of separation; of the second, which throws away the worse and preserves the better, I do know a name.
THEAETETUS: What is it?
STRANGER: Every discernment or discrimination of that kind, as I have observed, is called a purification.
THEAETETUS: Yes, that is the usual expression.
STRANGER: And any one may see that purification is of two kinds.
THEAETETUS: Perhaps so, if he were allowed time to think; but I do not see at this moment.
STRANGER: There are many purifications of bodies which may with propriety be comprehended under a single name.
THEAETETUS: What are they, and what is their name?
STRANGER: There is the purification of living bodies in their inward and in their outward parts, of which the former is duly effected by medicine and gymnastic, the latter by the not very dignified art of the bath-man; and there is the purification of inanimate substances--to this the arts of fulling and of furbishing in general attend in a number of minute particulars, having a variety of names which are thought ridiculous.
THEAETETUS: Very true.
STRANGER: There can be no doubt that they are thought ridiculous, Theaetetus; but then the dialectical art never considers whether the benefit to be derived from the purge is greater or less than that to be derived from the sponge, and has not more interest in the one than in the other; her endeavour is to know what is and is not kindred in all arts, with a view to the acquisition of intelligence; and having this in view, she honours them all alike, and when she makes comparisons, she counts one of them not a whit more ridiculous than another; nor does she esteem him who adduces as his example of hunting, the general's art, at all more decorous than another who cites that of the vermin-destroyer, but only as the greater pretender of the two. And as to your question concerning the name which was to comprehend all these arts of purification, whether of animate or inanimate bodies, the art of dialectic is in no wise particular about fine words, if she may be only allowed to have a general name for all other purifications, binding them up together and separating them off from the purification of the soul or intellect. For this is the purification at which she wants to arrive, and this we should understand to be her aim.
THEAETETUS: Yes, I understand; and I agree that there are two sorts of purification, and that one of them is concerned with the soul, and that there is another which is concerned with the body.
STRANGER: Excellent; and now listen to what I am going to say, and try to divide further the first of the two.
THEAETETUS: Whatever line of division you suggest, I will endeavour to assist you.
STRANGER: Do we admit that virtue is distinct from vice in the soul?
THEAETETUS: Certainly.
STRANGER: And purification was to leave the good and to cast out