"Socrates: So we must investigate again from the beginning what piety is, as I shall not willingly give up before I learn this. Do not think me unworthy, but concentrate your attention and tell the truth. For you know it, if any man does, and I must not let you go, like Proteus, before you tell me. If you had no clear knowledge of piety and impiety you would never have ventured to prosecute your old father for murder on behalf of a servant. For fear of the gods you would have been afraid to take the risk lest you should not be acting rightly, and would have been ashamed before men, but now I know well that you believe you have clear knowledge of piety and impiety. So tell me, my good Euthyphro, and do not hide what you think it is. Euthyphro: Some other time, Socrates, for I am in a hurry now, and it is time for me to go. Socrates: What a thing to do, my friend! By going you have cast me down from a great hope I had, that I would learn from you the nature of the pious and the impious and so escape Meletus’ indictment by showing him that I had acquired wisdom in divine matters from Euthyphro, and my ignorance would no longer cause me to be careless and inventive about such things, and that I would be better for the rest of my life."
January 1, 1970
https://en.wikiquote.org/wiki/Euthyphro