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
subs.
P. and V. πρόγονος, ὁ.
One's ancestors: P. and V. οἱ πάλαι, οἱ πρόσθεν, P. οἱ ἄνωθεν, οἱ προπάτορες, V. οἱ πάρος.
