ERYXIAS: We do. SOCRATES: Then if these arts are reckoned among things useful, the arts are wealth for the same reason as gold and silver are, for, clearly, the possession of them gives wealth. Yet a little while ago we found it difficult to accept the argument which proved that the wisest are the wealthiest. But now there seems no escape from this conclusion. Suppose that we are asked, 'Is a horse useful to everybody?' will not our reply be, 'No, but only to those who know how to use a horse?' ERYXIAS: Certainly. SOCRATES: And so, too, physic is not useful to every one, but only to him who knows how to use it? ERYXIAS: True. SOCRATES: And the same is the case with everything else? ERYXIAS: Yes. SOCRATES: Then gold and silver and all the other elements which are supposed to make up wealth are only useful to the person who knows how to use them? ERYXIAS: Exactly. SOCRATES: And were we not saying before that it was the business of a good man and a gentleman to know where and how anything should be used? ERYXIAS: Yes. SOCRATES: The good and gentle, therefore will alone have profit from these things, supposing at least that they know how to use them. But if so, to them only will they seem to be wealth. It appears, however, that where a person is ignorant of riding, and has horses which are useless to him, if some one teaches him that art, he makes him also richer, for what was before useless has now become useful to him, and in giving him knowledge he has also conferred riches upon him. ERYXIAS: That is the case. SOCRATES: Yet I dare be sworn that Critias will not be moved a whit by the argument. CRITIAS: No, by heaven, I should be a madman if I were. But why do you not finish the argument which proves that gold and silver and other things which seem to be wealth are not real wealth? For I have been exceedingly delighted to hear the discourses which you have just been holding. SOCRATES: My argument, Critias (I said), appears to have given you the same kind of pleasure which you might have derived from some rhapsode's recitation of Homer; for you do not believe a word of what has been said. But come now, give me an answer to this question. Are not certain things useful to the builder when he is building a house? CRITIAS: They are. SOCRATES: And would you say that those things are useful which are employed in house building,--stones and bricks and beams and the like, and also the instruments with which the builder built the house, the beams and stones which they provided, and again the instruments by which these were obtained? CRITIAS: It seems to me that they are all useful for building. SOCRATES: And is it not true of every art, that not only the materials but the instruments by which we procure them and without which the work could not go on, are useful for that art? CRITIAS: Certainly.