ποιητὴς, ὁπόταν ἐν τῷ τρίποδι τῆς Μούσης καθίζηται, τότε οὐκ ἔμφρων ἐστίν → whenever a poet is seated on the Muses' tripod, he is not in his senses
one's ancestors, one's forefathers, one's progenitors
