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
octōgēsĭmus: a, um,
I num. ord. adj. octoginta, the eightieth: quartum annum ago et octogesimum, Cic. Sen. 10, 32; 2, 4: solstitia, Juv. 4, 92.
octōgēsĭmus,¹² a, um, quatre-vingtième : Cic. CM 32.