ἀκόνα
From LSJ
Μισῶ σοφιστήν, ὅστις οὐχ αὑτῷ σοφός → I hate the sage who is not wise for himself → Odi professum sapere, qui sibi non sapit → Den Weisen hass' ich, der in eigner Sache Tor
English (Slater)
ᾰκόνα
1 whetstone φαίης κέ νιν ἄνδρ' ἐν ἀεθληταῖσιν ἔμμεν Ναξίαν πέτραις ἐν ἄλλαις χαλκοδάμαντ ἀκόναν i. e. Lampon, who trained his sons (I. 6.73) met. δόξαν ἔχω τινἐπὶ γλώσσᾳ λιγυρᾶς ἀκόνας (Bergk: ἀκόνας λιγυρᾶς codd.: sens. dub., a reputation for clear sounding whetting of the praises of men? ) (O. 6.82)