1. Aristot. Soph. El. 174 b 30: ἐπιχειρητέον δʼ ἐνίοτε καὶ πρὸς ἄλλα τοῦ εἰρημένου, ἐκεῖνο ἐκλαβόντας, ἐὰν μὴ πρὸς τὸ κείμενον ἔχῃ τις ἐπιχειρεῖν. ὅπερ ὁ Λυκόφρων ἐποίησε, προβληθέντος λύραν ἐγκωμιάζειν.
Alexander ad locum ab instrumento musico Lycophronem ad lyram, caeleste sidus, declinasse ait. Cf. Gorgiae frg. B VII 19, etiam Aristot. rhet. 1405 b 35, 1406 a 7.
1. Aristotle, Sophistical Refutations: Sometimes one must attack something other than what has been said, excluding the latter, if one has no arguments against the actual issue at hand. This is what Lycophron did as he was tasked with praising a lyre.
 According to the commentators, he praised the constellation Lyra instead, which in Greek is the same word.
Alexander ad loc. claims that Lycophron slid from the lyre as an instrument to the lyre as a constellation. Cf. Gorgias frag. B VII 19; Aristot. Rhetoric 1405 b 35, 1406 a 7.