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
sup-pŭdet: (subp-), ēre,
I v. impers., to be somewhat ashamed (Ciceronian): eorum me suppudebat, Cic. Fam. 9, 1, 2: puto te jam suppudere, id. ib. 15, 16, 1.