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Str. So now the part of the art of weaving which we chose for our discussion is clear to pretty much every understanding; for when that part of the art of composition which is included in the art of weaving forms a web by the right intertwining of woof and warp, we call the entire web a woollen garment, and the art which directs this process we call weaving.
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Y. Soc. Quite right.
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Str. Very good. Then why in the world did we not say at once that weaving is the intertwining of woof and warp? Why did we beat about the bush and make a host of futile distinctions?
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Y. Soc. For my part, I thought nothing that was said was futile, Stranger.
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Str. And no wonder; but perhaps you might change your mind. Now to avoid any such malady, in case it should, as is not unlikely, attack you frequently hereafter, I will propose a principle of procedure which is applicable to all cases of this sort.
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Y. Soc. Do so.
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Str. First, then, let us scrutinize the general nature of excess and deficiency, for the sake of obtaining a rational basis for any praise or blame we may bestow upon excessive length or brevity in discussions of this kind.
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Y. Soc. Yes, that is a good thing to do.
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Str. Then the proper subjects for our consideration would, I fancy, be these.
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Y. Soc. What?
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Str. Length and shortness and excess and deficiency in general; for all of them may be regarded as the subjects of the art of measurement.
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Y. Soc. Yes.
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Str. Let us, then, divide that art into two parts; that is essential for our present purpose.
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Y. Soc. Please tell how to make the division.
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Str. In this way: one part is concerned with relative greatness or smallness, the other with the something without which production would not be possible.
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Y. Soc. What do you mean?
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Str. Do you not think that, by the nature of the case, we must say that the greater is greater than the less and than nothing else, and that the less is less than the greater and than nothing else?
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Y. Soc. Yes.
