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
ἄκριτον: adv. беспрестанно, бесконечно (πενθήμεναι Hom.).
