His analysis of Piety — to take that first — was more or less as follows:Tell me, Euthydemus, what sort of thing is Piety, in your opinion?A very excellent thing, to be sure, he replied.Can you say what sort of man is pious?He who worships the gods, I think.May a man worship the gods according to his own will and pleasure?No, there are laws to be observed in worshipping the gods!

Then will not he who knows these laws know how he must worship the gods?I think so.Then does he who knows how he must worship the gods think that he must do so according to his knowledge, and not otherwise?He does indeed.And does everyone worship the gods as he thinks he ought, and not otherwise?I think so.