[402a]
Socrates
It sounds absurd, but I think there is some probability in it.
Hermogenes
What is this probability?
Socrates
I seem to have a vision of Heracleitus saying some ancient words of wisdom as old as the reign of Cronus and Rhea, which Homer said too.
Hermogenes
What do you mean by that?
Socrates
Heracleitus says, you know, that all things move and nothing remains still, and he likens the universe to the current of a river, saying that you cannot step twice into the same stream.
Hermogenes
True.