Soc: Do you then not realize now that you are saying that what is dear to the gods is the pious?  Is this not the same as the god-loved?  Or is it not?

Euth: It certainly is.

Soc: Either we were wrong when we agreed before, or, if we were right then, we are wrong now. 

Euth: That seems to be so.

Soc: So we must investigate again from the beginning what piety is, as I shall not willingly give up before I learn this. ...

Euth: Some other time, Socrates, for I am in a hurry now, and it is time for me to go.

(Plato, Euthyphro, 15c-16).