The Euthyphro Dilemma, presented in Plato's dialogue of the same name, poses a fundamental question about the nature of morality: Is something good because the gods love it, or do the gods love it because it is good? This seemingly simple query has profound implications for our understanding of ethics, particularly for theological ethics that ground moral principles in divine command. By examining the dilemma's two horns, we can see how both lead to problematic conclusions for a purely divine command theory of morality, suggesting that goodness must possess an independent foundation.
The first horn of the dilemma states that something is pious (or morally good) because the gods love it. This implies that morality is arbitrary and subject to the whims of divine decree. If the gods suddenly decided that cruelty was good, then, under this view, cruelty would indeed become morally obligatory. This presents a significant problem. For instance, consider the concept of justice. If justice is good solely because Zeus commands it, and Zeus were to command injustice, then injustice would become the virtuous path. This contradicts our deeply held intuition that certain actions, like gratuitous suffering, are inherently wrong, regardless of any divine pronouncement. Furthermore, this perspective makes the notion of praising the gods for their goodness paradoxical. If the gods are good because they command what is good, and they command what is good because they love it, then their goodness is a consequence of their own actions rather than an intrinsic quality. It's akin to saying a painter is good because they paint, rather than because of the quality of their paintings.
The second horn proposes that the gods love something because it is pious (or morally good). This suggests that goodness exists independently of divine will. If this is the case, then morality precedes and is superior to the gods. The gods, in this scenario, are not the arbiters of morality but rather discoverers of pre-existing moral truths. They love what is good because it is good, meaning there is a standard of goodness that they themselves are beholden to. This alternative raises its own set of challenges for those who wish to define morality exclusively through divine revelation. It implies that humans, too, might be able to discern these moral truths through reason or observation, without direct divine intervention. For example, the principle of not harming innocent others is widely accepted. If the gods love this principle because it is inherently good, then the goodness of non-harming is accessible to us even without a divine commandment. However, if goodness is independent, then the authority of divine commands as the sole source of morality is undermined. Why would a divine command be necessary if the moral truth is already discoverable?
The Euthyphro Dilemma forces a critical examination of the relationship between divinity and morality. If morality is arbitrary, stemming solely from divine decree, then it loses its objective grounding and becomes subject to inexplicable shifts. If, conversely, morality is independent of divine will, then the unique role of divine command in establishing ethical norms is diminished, and the gods become more like observers of an existing moral order. Neither horn offers a completely satisfactory resolution for a strictly divine command theory that seeks to establish morality solely through God's will. Therefore, many philosophers argue that a robust ethical system requires a foundation that is not entirely contingent on either divine decree or divine preference, but rather on principles that possess an intrinsic moral value.