The pursuit of virtue and moral understanding has been a central concern of philosophy since its inception. In Plato's dialogue Euthyphro, Socrates engages in a relentless cross-examination of Euthyphro, a self-proclaimed expert on religious matters, in an attempt to define the very essence of piety. This seemingly straightforward quest unravels into a profound philosophical dilemma, exposing the inherent difficulties in grounding ethical concepts in divine command. Socrates’ method, characterized by his persistent questioning and his admission of ignorance, highlights not just the inadequacy of Euthyphro’s answers, but also the deeper problem of how we ought to understand our relationship with the divine and the basis of moral obligation. Ultimately, the dialogue suggests that piety, understood as obedience to divine commands, is problematic because it fails to provide a rational justification for why those commands are good or right, leaving morality precariously dependent on arbitrary divine will.
Euthyphro’s initial definition of piety as "prosecuting the wrongdoer" is quickly dismantled by Socrates. Socrates points out that this definition is too narrow; it describes an action associated with piety but not its fundamental nature. He illustrates this by noting that if one were to prosecute a dog or a rooster, this action would still be characterized as "prosecuting the wrongdoer," yet it hardly seems like an act of piety in the way Euthyphro intends. This early exchange establishes Socrates’ approach: he seeks a universal definition, a single form or essence that makes pious actions pious. He is not satisfied with examples or partial descriptions but demands an account of what piety is in itself, independent of specific instances. This insistence on abstract definition is a hallmark of Socratic inquiry, pushing beyond mere appearances to grasp underlying principles.
Following this initial failure, Euthyphro offers a revised definition: piety is "what is dear to the gods." This shifts the focus from action to divine approval. However, Socrates immediately identifies a potential complication: the gods, as depicted in Greek mythology, are often portrayed as quarreling and having differing opinions. What is dear to one god might be hateful to another. This leads to the famous Euthyphro Dilemma. If piety is what is dear to the gods, then it must be the case that the gods love it because it is pious. But then, what is pious is loved by the gods, and what is not pious is hated by them. This creates a circularity. Does that mean the gods love piety because it is pious, or is it pious because the gods love it?
The crux of the dilemma lies in the second horn: "Is the pious loved by the gods because it is pious, or is it pious because it is loved by the gods?" If the latter is true, then piety is merely a matter of divine preference. Whatever the gods decide to love becomes pious, and if they were to change their minds, then what was once pious would become impious. This implies that piety has no independent standard of goodness or rightness. It suggests that an act is morally good simply because a deity commands it, not because the act itself possesses inherent moral value. This is deeply unsettling for a rational approach to ethics, as it makes morality arbitrary and subject to divine whim, offering no rational basis for obedience beyond fear of punishment or hope of reward.
Conversely, if the former option is true – that the gods love piety because it is pious – then piety must have some inherent quality that makes it lovable, a quality that exists independently of divine decree. This implies that the gods, themselves, are subject to a higher standard of goodness. They love piety because it conforms to this standard. In this scenario, divine commands become expressions of this pre-existing goodness, rather than its origin. While this preserves a more robust sense of morality, it also raises questions about the nature of this independent standard and the gods’ role in relation to it. Are they discoverers of this standard, or are they agents who uphold it? In either case, the simple definition of piety as obedience to divine will becomes insufficient, as it doesn't explain why we should obey, or what makes the divine will itself good.
Socrates' relentless questioning in Euthyphro does not yield a definitive answer to "What is piety?" Instead, it serves to dismantle superficial and circular definitions, exposing the profound philosophical challenges in defining piety, morality, and the relationship between human beings and the divine. The dialogue reveals that merely appealing to divine command as the sole basis for morality is philosophically untenable, as it leads to either arbitrariness or implies a standard of goodness that transcends divine will. The enduring significance of Euthyphro lies in its demonstration of how critical inquiry can expose the assumptions underlying our most fundamental beliefs, prompting a deeper, more reasoned search for ethical truth.