ποταμῷ γὰρ οὐκ ἔστιν ἐμβῆναι δὶς τῷ αὐτῷ → it is impossible to step twice in the same river, you cannot step twice into the same rivers
attention, care: P. ἐπιμέλεια, ἡ, P. and V. θεραπεία, ἡ; see care, management.