οἴοθεν
From LSJ
Ὥσπερ οἱ ἐρωτικοὶ ἀπὸ τῶν ἐν αἰσθήσει καλῶν ὁδῷ προϊόντες ἐπ' αὐτὴν καταντῶσι τὴν μίαν τῶν καλῶν πάντων καὶ νοητῶν ἀρχήν → Just as lovers systematically leave behind what is fair to sensation and attain the one true source of all that is fair and intelligible
English (LSJ)
Adv.
A from one only, i. e. by oneself, alone, οἰ. οἶος Il.7.39,226 ; without οἶος, Arat.55, A.R.1.270, etc.