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SOCRATES: Enough. Now, Ion, will the charioteer or the physician be the better judge of the propriety of these lines?

ION: The charioteer, clearly.

SOCRATES: And will the reason be that this is his art, or will there be any other reason?

ION: No, that will be the reason.

SOCRATES: And every art is appointed by God to have knowledge of a certain work; for that which we know by the art of the pilot we do not know by the art of medicine?

ION: Certainly not.

SOCRATES: Nor do we know by the art of the carpenter that which we know by the art of medicine?

ION: Certainly not.

SOCRATES: And this is true of all the arts;—that which we know with one art we do not know with the other? But let me ask a prior question: You admit that there are differences of arts?

ION: Yes.

SOCRATES: You would argue, as I should, that when one art is of one kind of knowledge and another of another, they are different?

ION: Yes.

SOCRATES: Yes, surely; for if the subject of knowledge were the same, there would be no meaning in saying that the arts were different,—if they both gave the same knowledge. For example, I know that here are five fingers, and you know the same. And if I were to ask whether I and you became acquainted with this fact by the help of the same art of arithmetic, you would acknowledge that we did?