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
P. παρθενία, ἡ, V. παρθενεία, ἡ, κορεύματα, τά.
chastity: P. ἁγνεία, ἡ, V. ἅγνευμα, τό.