In Plato's Euthyphro, Euthyphro have problems defining the meaning of pious acts and what is piety. His first endeavor to term piety was clearly full of imperfections. As he stumbles through his second attempt to identify piety (13d-14c), he concludes and states that piety is a division of justice. Socrates does not have a clear understanding of Euthyphro's new definition and so asks him to further elucidate the subject matter. That is, if Euthyphro can identify that part of justice which is a part of piety, then he will have a sufficient definition of piety. Euthyphro suggests that the part of justice that is concerned with looking after the gods is pious, whereas the part of justice that is concerned with looking after men is not (Euthyphro 13b). Concisely, Socrates asks if Euthyphro similarly thinks that the gods are made better by pious deeds, and that every time Euthyphro does something pious, the gods are somehow improved. Euthyphro denies that he means this sort of relationship, and instead, suggests that piety is looking after the gods in the way that a slaves look after their masters (13d).
             Socrates replies with the restatement of Euthyphro's claim as, "It [piety] is likely to be a kind of service of the gods" (13d). Soon after, Socrates points out that people who serve are always being used to achieve some sort of goal: service to doctors, for instance, is done with the goal of achieving health; as it is the same for shipbuilders to building a ship, and house builders to building a house (13d-e). Socrates then asks what is the goal of the gods which the Greeks help them to achieve. Euthyphro evades the question, which suggests that the gods utilize them for a variety of reasons. Socrates replies that they could just as well say a general uses his underlings for a multitude of reasons, but that the principal reason is still the goal of winning a war. Thus, he encourages Euthyphro again to ide...