"Euthyphro: Not only these, Socrates, but, as I was saying just now, I will, if you wish, relate many other things about the gods which I know will amaze you. Socrates: I should not be surprised, but you will tell me these at leisure some other time. For now, try to tell me more clearly what I was asking just now, for, my friend, you did not teach me adequately when I asked you what the pious was, but you told me that what you are doing now, in prosecuting your father for murder, is pious."
January 1, 1970
https://en.wikiquote.org/wiki/Euthyphro