ἔστι γὰρ ὁ φίλος ἄλλος αὐτός → a friend, you see, is another self
Tiresias, the blind seer of Thebes. Of all the shades in the nether world Tiresias alone retained his mental faculties unimpaired. Od. 10.524, , Od. 11.32, , , 13, 1, , μ 2, Od. 23.251, 323.