τὸ ἐμόν γ' ἐμοὶ λέγεις ὄναρ → you are telling me what I know already, you are telling me my own dream
P. and V. σοφία, ἡ, τέχνη, ἡ, Ar. and P. δεξιότης, ἡ, P. δεινότης, ἡ.