SOCRATES: And if you knew the good speaker, you would also know the inferior speakers to be inferior? ION: That is true. SOCRATES: Then, my dear friend, can I be mistaken in saying that Ion is equally skilled in Homer and in other poets, since he himself acknowledges that the same person will be a good judge of all those who speak of the same things; and that almost all poets do speak of the same things? ION: Why then, Socrates, do I lose attention and go to sleep and have absolutely no ideas of the least value, when any one speaks of any other poet; but when Homer is mentioned, I wake up at once and am all attention and have plenty to say? SOCRATES: The reason, my friend, is obvious. No one can fail to see that you speak of Homer without any art or knowledge. If you were able to speak of him by rules of art, you would have been able to speak of all other poets; for poetry is a whole. ION: Yes. SOCRATES: And when any one acquires any other art as a whole, the same may be said of them. Would you like me to explain my meaning, Ion? ION: Yes, indeed, Socrates; I very much wish that you would: for I love to hear you wise men talk. SOCRATES: O that we were wise, Ion, and that you could truly call us so; but you rhapsodes and actors, and the poets whose verses you sing, are wise; whereas I am a common man, who only speak the truth. For consider what a very commonplace and trivial thing is this which I have said--a thing which any man might say: that when a man has acquired a knowledge of a whole art, the enquiry into good and bad is one and the same. Let us consider this matter; is not the art of painting a whole? ION: Yes. SOCRATES: And there are and have been many painters good and bad? ION: Yes. SOCRATES: And did you ever know any one who was skilful in pointing out the excellences and defects of Polygnotus the son of Aglaophon, but incapable of criticizing other painters; and when the work of any other painter was produced, went to sleep and was at a loss, and had no ideas; but when he had to give his opinion about Polygnotus, or whoever the painter might be, and about him only, woke up and was attentive and had plenty to say? ION: No indeed, I have never known such a person. SOCRATES: Or did you ever know of any one in sculpture, who was skilful in expounding the merits of Daedalus the son of Metion, or of Epeius the son of Panopeus, or of Theodorus the Samian, or of any individual sculptor; but when the works of sculptors in general were produced, was at a loss and went to sleep and had nothing to say? ION: No indeed; no more than the other. SOCRATES: And if I am not mistaken, you never met with any one among flute-players or harp-players or singers to the harp or rhapsodes who was able to discourse of Olympus or Thamyras or Orpheus, or Phemius the rhapsode of Ithaca, but was at a loss when he came to speak of Ion of Ephesus, and had no notion of his merits or defects?