τοῦ εἰδέναι χάριν ἡ πραγματεία → knowledge is the object of our inquiry, the aim of our investigation is knowledge
ἀναφέρω, ἀμφέρω, ἐρέσσω, ἐρέττω, διερέσσω, ῥοθιάζω, κωπηλατέω