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
σχολά 1 leisure μακροτέρας γὰρ ἀριθμῆσαι σχολᾶς (sc. ἐστί) (N. 10.46)
σχολά: (ᾰ) ἡ дор. = σχολή.