The Euthyphro Dilemma: Plato's Question for Divine Command Theory

The Euthyphro dilemma is Socrates’ question, from Plato’s dialogue Euthyphro: is the pious loved by the gods because it is pious, or is it pious because it is loved by the gods (10a)? Rephrased for a single god, the question that has occupied theologians and philosophers ever since is: is something good because God commands it, or does God command it because it is already good? Both answers cause trouble, which is why the question is called a dilemma rather than a puzzle with an easy fix.

What is the setting of the Euthyphro?

The dialogue opens outside the office of the King Archon, the Athenian magistrate who handled religious charges. Socrates is there because Meletus has indicted him for corrupting the young and for impiety, inventing new gods instead of recognising the city’s own (2a–3b). He runs into Euthyphro, a religious expert, who is there for a stranger reason: he is prosecuting his own father for murder.

Euthyphro explains why. A labourer on the family’s farm on Naxos had killed a household slave in a drunken rage. Euthyphro’s father had the man bound and thrown in a ditch while he sent to Athens to ask a religious official what to do, and the labourer died of exposure and neglect before word came back (4c–e). Euthyphro’s relatives are horrified that he would prosecute his own father over the death of a man who was, after all, a killer himself, but Euthyphro is unmoved. He is certain he understands piety well enough to know his father is in the wrong, and says so with total confidence (4e–5a). Socrates, facing an impiety charge he does not understand himself, asks Euthyphro to teach him what piety actually is, before the case can even begin. Socratic irony is doing real work here: Socrates plays the eager pupil to a man about to be exposed as having no idea what he is talking about.

Euthyphro’s definitions, and why each one fails

Over the course of the dialogue Euthyphro offers five attempts at a definition. Socrates rejects the first as an example rather than a definition, and picks the rest apart one by one.

Definition	What it says	Why it fails
Prosecuting wrongdoers (5d)	Piety is doing what I am doing now: prosecuting whoever commits injustice, regardless of who they are	It is an example of a pious act, not an account of what makes any act pious; Socrates wants the single form (eidos) that makes all pious things pious
What is dear to the gods (6e–8a)	The pious is what is loved by the gods, the impious what is hated by them	The gods, in Greek myth, quarrel and disagree about justice, so the same act could be loved by some gods and hated by others, making it both pious and impious at once
What all the gods love (9e)	To avoid the disagreement problem, piety is narrowed to what every god loves without exception	This survives the disagreement objection, but Socrates shows it fails for a deeper reason, explained below
Care of the gods (12e–14a)	Piety is a part of justice concerned with tending or caring for the gods, the way grooms care for horses or herdsmen for cattle	Human care cannot make the gods better or more perfect the way animal care improves animals, so the analogy breaks down; Euthyphro cannot say what this “care” achieves
A trading relationship with the gods (14b–e)	Piety is a kind of commerce between gods and men: we give sacrifices, they give favours in return	Socrates asks what benefit the gods actually get from our gifts, since they lack nothing; Euthyphro retreats to saying the gods simply find our gifts pleasing, which collapses straight back into the second, already refuted, definition

The core argument: loved versus lovable

The turning point of the dialogue comes once Euthyphro has settled, provisionally, on “the pious is what all the gods love” (9e). Socrates does not simply reject this. He asks a question that looks small but is not: when the gods love the pious, do they love it because it is pious, or is it pious because they love it (10a)?

Socrates gets Euthyphro to agree that being carried is different from carrying, being seen is different from seeing: one is a state something is put into by an action, the other is the action itself. In the same way, “being loved” is a state a thing is put into by the act of loving it. So if the gods love the pious because it is pious, then piety is the cause and being-loved is the effect, and the two are not the same thing. But Euthyphro’s definition says piety just is being loved by the gods, treating the effect as if it were the essence. Socrates concludes that “god-loved” describes something that happens to pious things, not what piety actually is (10a–11b). Euthyphro, Socrates jokes, has made his arguments walk in circles like the moving statues his mythical ancestor Daedalus was said to have built, unless he holds them still (11b–c).

This is the philosophical heart of the dialogue. It shows that even the god-approved version of Euthyphro’s definition cannot answer the deeper question: what is piety itself, independent of anyone’s attitude toward it? Every later definition Euthyphro tries runs into some version of the same problem, and by 15e the pair have gone in a full circle back to something close to where they started. Euthyphro suddenly remembers an appointment and hurries off, leaving Socrates without an answer and the dialogue in aporia, the state of puzzlement Plato’s early dialogues so often end in rather than resolve.

The two horns of the dilemma

Stated for a single god rather than the many gods of Euthyphro’s Athens, the dilemma has two branches, or horns, and each creates a problem for anyone who wants morality to rest on God’s authority.

Horn one: arbitrariness. If something is good only because God commands it, then had God commanded cruelty, cruelty would have been good. Morality becomes, in principle, a matter of will rather than reason: whatever God happens to decree. Critics argue this makes calling God “good” an empty compliment, since goodness is just defined as whatever God does.

Horn two: independence. If God commands good things because they are already good, then goodness exists as a standard apart from God, one that even God consults. This seems to limit God’s power and put morality outside divine authority altogether, which troubles anyone who wants God to be the ultimate source of value rather than simply the most reliable reporter of it.

How have philosophers and theologians responded?

The dilemma has generated centuries of responses, none universally accepted.

Divine command theory. Some thinkers accept the first horn and argue it is not as damaging as it looks. The medieval philosopher William of Ockham is often cited as holding a strong version of this view: God’s will simply is the standard of morality, and asking why is a mistake, since goodness has no deeper explanation than God’s command.

Natural law responses. Thomas Aquinas and later natural-law thinkers try to slip between the horns. On this account, morality flows from God’s rational nature rather than an arbitrary act of will, and God’s commands express, rather than invent, what is already fitting for the kind of creatures humans are. This aims to keep morality grounded in God without making it independent of God.

Robert Adams’ modified divine command theory. In the later twentieth century, the philosopher Robert Adams proposed a modified version: moral obligation is grounded in the commands of a God who is essentially loving. Because God’s nature constrains what such a being could command, the theory is not vulnerable to the arbitrariness worry in the way a bare “whatever God says” view is.

The “third option”: goodness as God’s nature. A related response, associated with philosophers such as William Alston, denies that the dilemma’s two horns are the only options. On this view, goodness is not a standard God consults (horn two) nor an arbitrary decree (horn one), but identical with God’s own nature, the way some philosophers treat certain properties as brute, foundational facts rather than the product of a rule. Whether this genuinely escapes the dilemma or just relocates it is still argued over.

Why does the dilemma matter for ethics and religion today

The dilemma is not only a historical curiosity. It sits underneath several live debates.

In religious ethics, it presses believers to say clearly why a command is binding. If the answer is only “because God said so,” critics can ask whether that makes morality a matter of obedience rather than genuine goodness. If the answer instead appeals to love, justice or wisdom as reasons behind the command, the believer has, in effect, picked the second horn, at least partly: there is some standard, however described, that makes the command worth following, not just the fact that it was issued.

In secular ethics, a version of the same problem appears whenever value is tied to an authority’s say-so rather than to reasons: is a law just because the state enacted it, or does the state enact it because it is just? Is an action right because a society approves of it, or does the society approve because it is right? The structure of the question transfers cleanly, which is part of why the Euthyphro is still assigned in philosophy of religion, meta-ethics and jurisprudence courses even though it was written about the gods of a religion nobody practises anymore.

In practice, most working religious ethicists land somewhere between the two horns rather than fully embracing either, which is exactly what Aquinas, Adams and Alston’s lines of response are trying to do. None of them make the dilemma disappear; they aim instead to show that it does not force the stark choice it first appears to.

Why the dilemma still matters

The Euthyphro dilemma is not really an argument against religion. Socrates poses it as a question for anyone, believer or not, who thinks that grounding morality in authority, divine or otherwise, is enough on its own. It forces a choice between two uncomfortable positions: either moral standards are ultimately arbitrary, tied to whoever happens to hold power over them, or they exist independently of any authority, which raises the question of where they come from instead.

That is why the dilemma keeps reappearing outside theology too, in debates over law, politics and any system that claims something is right simply because the relevant authority says so. Socrates never resolves it in the dialogue that bears Euthyphro’s name; he simply leaves, as he does at his own trial in the Apology, still asking the question he came to ask. Why Socrates was executed not long afterward is, in one sense, the same story: a man who kept pressing questions that Athens preferred left alone. The Euthyphro is one of several early, mostly unresolved dialogues Plato wrote using Socratic questioning to show how much confident belief rests on definitions nobody has actually worked out.