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
maidenhood: V. παρθενεία, ἡ.
continence: P. ἐγκράτεια, ἡ, P. and V. τὸ σῶφρον, τὸ σωφρονεῖν (Euripides, Electra 923).
Chastity personified: (Aidos) V. Αἰδώς (Euripides, Hippolytus 78).