ION: No, he will not.
SOCRATES: But he will know what a spinning-woman ought to say about the working of wool?
ION: No.
SOCRATES: At any rate he will know what a general ought to say when exhorting his soldiers?
ION: Yes, that is the sort of thing which the rhapsode will be sure to know.
SOCRATES: Well, but is the art of the rhapsode the art of the general?
ION: I am sure that I should know what a general ought to say.
SOCRATES: Why, yes, Ion, because you may possibly have a knowledge of the art of the general as well as of the rhapsode; and you may also have a knowledge of horsemanship as well as of the lyre: and then you would know when horses were well or ill managed. But suppose I were to ask you: By the help of which art, Ion, do you know whether horses are well managed, by your skill as a horseman or as a performer on the lyre—what would you answer?
ION: I should reply, by my skill as a horseman.
SOCRATES: And if you judged of performers on the lyre, you would admit that you judged of them as a performer on the lyre, and not as a horseman?