The Euthyphro, like Plato’s other early dialogues, contains a failed attempt to successfully define a concept (such as justice or virtue) by way of a discussion between Socrates and another character. In this case, Euthyphro—a presumed local expert on all things righteous—discusses the nature of “piety” at length with Socrates on the steps of the Athenian magistrates court. Both men are at the courthouse to address impiety: Euthyphro is prosecuting his father for causing the death of a murderous slave, whilst Socrates is being charged with spreading ideas that are irreverent towards the gods. Socrates suggests, with typical irony, that he is ignorant on such matters and might perhaps learn a thing or two from Euthyphro on the subject. The joke on Euthyphro, however as he ends up being schooled by Socrates. Throughout their conversation, Euthyphro offers five possible definitions for piety, which Socrates questions and undermines in turn, until Euthyphro abruptly ends the conversation in frustration. Socrates’s criticisms imply that he thinks the nature of piety is universal, unchanging, independent of the gods’ desires, and knowable—but not easily discovered.
Euthyphro suggests that piety is punishing people who have done wrong, but Socrates argues that this example doesn’t say anything more universal about piety that would apply to other situations. Even though his family believes otherwise, Euthyphro is convinced that he is acting piously by prosecuting his father, because the gods have done similar things. Euthyphro argues that Zeus bound his father Cronus for swallowing his children, and Cronus also castrated his own father Uranus for “similar reasons.” Socrates argues that this merely offers an example of a pious action. He’s not looking for an example, but a universal definition of piety that will let him pick out all pious actions, no matter what the scenario. In response, Euthyphro suggests that piety is what matters to the gods, and impiety is what does not. However, Socrates argues that the gods often disagree, so an action that pleases one god but irks another isn’t definitively pious. Since the gods don't always agree, it's quite likely that Euthyphro’s decision to prosecute his father can be both pious (because Zeus is pleased) and impious (because Cronus and Uranus are displeased) at the same time. It won't do for something to be pious to one god (or person) but not to another because Socrates is looking for the unchanging essence of piety.
Euthyphro then suggests that piety isn’t just what some gods value, but what “all the gods love.” So, impiety is what is “all the gods hate.” Socrates argues that this still fails to show what piety is because knowing that something is loved by the gods doesn’t explain what that thing is. Instead, he convinces Euthyphro that being “god-loved” is merely something all pious things have in common. Socrates poses a dilemma: is something pious because the gods love it, or do the gods love it because it is pious? He argues it seems strange to say that the act of loving something “changes” it into something pious, even if that love is emanating from a god. A similar dilemma might be something like: is something beautiful because a person finds it attractive, or does the person find it attractive because it’s beautiful? Socrates thinks it seems strange to say that finding something attractive changes it from something ugly into something beautiful. Similarly, he thinks it's odd to say that something becomes pious just because it is loved. So it must be the case, Socrates argues, that the gods love something because it already is pious. In other words, the gods detect piety in that thing, and that’s why they love it. Socrates therefore contends that Euthyphro is confusing “an affect or quality” of pious things with the thing that elicits the response of being “god-loved.” In characterizing the feelings of the gods as mere responses to piety, Socrates is claiming that the nature of piety is constant and true, independent of any being’s feelings about it.
Euthyphro’s fourth and fifth definitions hinge on notions of caring for, or servicing, the gods. Socrates argues that both of these ideas require knowledge that is inaccessible to humans, namely knowledge of the gods’ intentions and desires. What he seeks, in contrast, is a definition of piety that is knowable. Socrates and Euthyphro agree that since humans are not in control of the gods, “caring” for the gods is not the same as “caring” for animals, or plants, or things that humans are in control of. Euthyphro suggests that caring for the gods is more like the kind of care slaves have for their masters. Socrates contends that slaves are able provide this sort of “care” by servicing their masters’ specific aims (such as winning wars, or growing crops). So Euthyphro suggests that the gods’ aims or desires are met by praying and offering sacrifices. He offers these actions as his fifth definition of piety. Socrates argues that praying is really more like begging the gods, but sacrifices are gifts offered to the gods. But this is hardly a fair trade, as humans don’t know what gifts the gods want. Euthyphro becomes frustrated because he cannot claim to know what ineffable things the gods need or desire. Once again, Socrates distances his idea of piety from the desires of the gods since these are unknowable.
In peppering Euthyphro with questions about the nature of piety, Socrates—and, by extension, Plato—steers the reader away from a definition that relies on the changeable and ineffable desires of the gods (or on anybody else's, for that matter), and towards one that is universal, unchanging, and discoverable through meticulous rational inquiry. This view of piety aligns with Plato’s theory of forms, which is more fully realized in later dialogues such as Phaedo and the Republic.
The Nature of Piety ThemeTracker
The Nature of Piety Quotes in Euthyphro
EUTHYPHRO: […] He seems to me to start out by harming the very heart of the city by attempting to wrong you. Tell me, what does he say you do to corrupt the young?
SOCRATES: Strange things, to hear him tell it, for he says that 1 am a maker of gods, and on the ground that I create new gods while not believing in the old gods, he has indicted me for their sake, as he puts it.
EUTHYPHRO: […] The victim was a dependent of mine, and when we were farming in Naxos he was a servant of ours. He killed one of our household slaves in drunken anger, so my father bound him hand and foot and threw him in a ditch, then sent a man here to inquire from the priest what should be done. During that time he gave no thought or care to the bound man, as being a killer, and it was no matter if he died, which he did. Hunger and cold and his bonds caused his death before the messenger came back from the seer. Both my father and my other relatives are angry that I am prosecuting my father for murder on behalf of a murderer when he hadn’t even killed him, they say, and even if he had, the dead man does not deserve a thought, since he was a killer. For, they say, it is impious for a son to prosecute his father for murder. But their ideas of the divine attitude to piety and impiety are wrong, Socrates.
SOCRATES: […] So tell me now, by Zeus, what you just now maintained you clearly knew: what kind of thing do you say that godliness and ungodliness are, both as regards murder and other things; or is the pious not the same and alike in every action, and the impious the opposite of all that is pious and like itself, and everything that is to be impious presents us with one form or appearance insofar as it is impious?
EUTHYPHRO: Most certainly, Socrates.
SOCRATES: Tell me then, what is the pious, and what the impious, do you say?
EUTHYPHRO: I say that the pious is to do what I am doing now, to prosecute the wrongdoer, be it about murder or temple robbery or anything else, whether the wrongdoer is your father or your mother or anyone else; not to prosecute is impious. And observe, Socrates, that I can cite powerful evidence that the law is so. I have already said to others that such actions are right, not to favor the ungodly, whoever they are. These people themselves believe that Zeus is the best and he unjustly swallowed his sons, and that he in turn castrated his father for similar reasons.
SOCRATES: Bear in mind then that I did not bid you tell me one or two of the many pious actions but that form itself that makes all pious actions pious, for you agreed that all impious actions are impious and all pious actions pious through one form, or don’t you remember?
EUTHYPHRO: I do.
SOCRATES: Tell me then what this form itself is, so that I may look upon it and, using it as a model, say that any action of yours or another’s that is of that kind is pious, and if it is not that it is not.
EUTHYPHRO: If that is how you want it, Socrates, that is how I will tell you.
SOCRATES: That is what I want.
EUTHYPHRO: Well then, what is dear to the gods is pious, what is not is impious.
SOCRATES: But you say that the same things are considered just by
some gods and unjust by others, and as they dispute about these things they are at odds and at war with each other. Is that not so?
EUTHYPHRO: It is.
SOCRATES: The same things then are loved by the gods and hated by the gods, and would be both god-loved and god-hated.
EUTHYPHRO: It seems likely.
SOCRATES: And the same things would be both pious and impious, according to this argument?
EUTHYPHRO: I’m afraid so.
SOCRATES: So you did not answer my question, you surprising man.
I did not ask you what same thing is both pious and impious, and it appears that what is loved by the gods is also hated by them.
SOCRATES: […] Consider this: Is the pious being loved by the gods because it is pious, or is it pious because it is being loved by the gods?
SOCRATES: […] I want to say this, namely, that if anything is being changed or is being affected in any way, it is not being changed because it is something changed, but rather it is some thing changed because it is being changed; nor is it being affected because it is something affected, but it is something affected because it is being affected.
EUTHYPHRO: I think, Socrates, that the godly and pious is the part of the just that is concerned with the care of the gods, while that concerned with the care of men is the remaining part of justice.
EUTHYPHRO: I told you a short while ago, Socrates, that it is a considerable task to acquire any precise knowledge of these things, but, to put it simply, I say that if a man knows how to say and do what is pleasing to the gods at prayer and sacrifice, those are pious actions such as preserve both private houses and public affairs of state. The opposite of these pleasing actions are impious and overturn and destroy everything.
SOCRATES: 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!