Δελφῖνα νήχεσθαι διδάσκεις: ἐπὶ τῶν ἐν ἐκείνοις τινὰ παιδοτριβούντων, ἐν οἷς ἤσκηται → Teaching dolphins to swim: is applied to those who are teaching something among people who are already well versed in it
βαδίζω, διαπεράω, ἀρτῶμαι, ἀνατέλλω, ἐκπορεύω, εἴσειμι, ἀνάγω, ἀπέρχομαι, ἀναφέρω
