What Is Moral Relativism: Cultural Values, Ethics, and Its Critics

The Basic Claim: Morality Varies

Moral relativism is the view that moral truths are not universal and objective but are relative to something — most commonly a culture, society, or individual. The observation that drives it is one of the oldest in anthropology and philosophy: different societies have held dramatically different, and sometimes mutually incompatible, moral beliefs. Ancient Spartans approved of infanticide for weak children; many contemporary societies consider it monstrous. Some cultures practiced and celebrated human sacrifice; others consider it the worst of crimes. The ancient Greeks kept slaves; most modern societies consider slavery a fundamental moral wrong. If morality were objective and universal, why would there be such profound disagreement across cultures?

It is important at the outset to distinguish several different claims that often travel under the label "moral relativism." Descriptive moral relativism is merely a factual claim: moral beliefs and practices vary significantly across cultures. This is not controversial — it is well-documented empirically. Meta-ethical moral relativism is a stronger philosophical claim: moral truths are not absolute but are relative to cultural or individual frameworks — there is no culture-independent standard by which to judge moral claims. Normative moral relativism draws a practical conclusion: we should not judge other cultures' moral practices by our own standards, and cultures should tolerate each other's different moral practices. These three claims are often conflated but are logically distinct, and accepting one does not require accepting the others.

Cultural Relativism and Anthropological Evidence

The most influential version of moral relativism is cultural relativism — the view that moral norms are valid only relative to the culture that holds them. This view received a major boost from early 20th century anthropology. Figures like Franz Boas and his students (including Margaret Mead and Ruth Benedict) argued that cultures should be understood on their own terms rather than judged against a Western standard assumed to represent progress or civilization. Benedict's Patterns of Culture (1934) described cultures as integrated wholes in which practices that seemed shocking to outsiders made sense within their own cultural logic — the potlatch ceremonies of the Pacific Northwest, the aggression-valuing cultures of Melanesia, the shame-based ethics of Japan all represented coherent alternative moral frameworks.

This anthropological perspective was motivated partly by a laudable reaction against the ethnocentrism and racism of 19th-century social thought, which ranked cultures on a single scale of progress with Western Europe at the top. But Benedict and others moved from the empirical observation of moral diversity to the stronger meta-ethical claim that no culture's values could be judged better or worse than any other's, which is a philosophical leap that the empirical evidence does not support. The fact that cultures disagree about moral questions does not, by itself, show that there are no right answers — people disagree about historical and scientific questions too, but we do not conclude from this that historical and scientific truth is relative to culture.

Individual Relativism and Subjectivism

A related position is individual moral relativism or subjectivism — the view that moral claims are expressions of individual feelings, attitudes, or preferences, and that there is no objective moral truth beyond what the individual believes or feels. A.J. Ayer's emotivism, developed in Language, Truth and Logic (1936), held that moral statements like "cruelty is wrong" are not genuine claims about the world at all but merely expressions of emotion ("boo to cruelty!") and therefore neither true nor false. C.L. Stevenson's more sophisticated expressivism held that moral claims function primarily to express and influence attitudes.

These metaethical positions have appealing elements: they take seriously the observation that moral disagreements often seem deeply persistent in a way that disagreements about facts are not, and they avoid the need to posit mysterious non-natural moral properties. But they also face powerful objections. If moral claims are merely expressions of emotion, then "the Holocaust was wrong" and "the Holocaust was not wrong" are both equally valid — which seems to collapse any distinction between moral seriousness and moral nihilism. And if morality is just a matter of individual taste, then moral progress — the abolition of slavery, the extension of rights to women and minorities — is not genuinely progress but merely change, which many find deeply counterintuitive.

The Tolerance Paradox and Self-Refutation

One of the most frequently cited objections to moral relativism is that it appears to be self-refuting or at least internally inconsistent when it moves to the normative claim that we should tolerate other cultures' moral practices. The normative relativist says: different cultures have different moral standards, and therefore we should not judge other cultures by ours. But "we should not judge other cultures" is itself a universal moral claim — it claims that tolerance and non-judgment are moral obligations that apply across cultures. If moral standards are relative, this claim is also relative, and a culture that believes in judging and criticizing other cultures is on no worse footing than the relativist who urges tolerance.

In other words, if relativism is true, there is no more reason to be tolerant of other cultures than to be intolerant of them — tolerance is not derivable from relativism but must be imported from some non-relativist commitment to respect and non-harm. The philosopher James Rachels, in The Elements of Moral Philosophy, makes this argument effectively: relativism cannot ground the very tolerance it is invoked to support. A more coherent position might be that tolerance and humility about one's own cultural biases are morally required not because morality is relative but because respect for persons and the recognition of one's own fallibility are genuine moral values.

What Moral Relativism Gets Right

Despite these objections, moral relativism has captured something important that moral philosophers cannot afford to ignore. The history of moral certainty is deeply uncomfortable: confident moral reformers have committed atrocities in the name of objective moral truth. Colonial powers imposed their "superior" morality on subject peoples with devastating results. Religious moral absolutism has justified persecution, torture, and war. A degree of epistemic humility about one's own moral views — recognizing that one's moral intuitions may be shaped by one's cultural context, class, gender, and historical moment — is intellectually virtuous and ethically important.

Moreover, careful attention to moral diversity has genuinely expanded moral thinking. The encounter with other cultures' moral practices has sometimes revealed that Western moral assumptions were parochial rather than universal. The recognition that different cultural practices can embody genuine moral wisdom — that there are multiple ways of organizing human social life that promote flourishing — is an important correction to crude universalism. The appropriate response is not relativism but moral humility: a willingness to critically examine one's own moral beliefs, to take seriously moral arguments and evidence from other cultural traditions, and to revise one's views in light of better arguments.

Beyond Relativism: Moral Universalism and Cross-Cultural Ethics

The most persuasive response to moral relativism is not a confident assertion of some particular moral code's universality but a more modest moral realism: there are moral truths, they are not reducible to cultural preferences, and we can make genuine progress in understanding them — but this progress is difficult, requires taking seriously a wide range of moral evidence and argument, and demands humility about our current level of understanding. Philosopher Martha Nussbaum's capabilities approach, which identifies a list of central human capabilities (life, bodily health, sense, imagination, emotions, practical reason, affiliation, play, and control over one's environment) as the basis of universal standards of justice, represents one attempt to develop a substantive universalism that is also sensitive to cultural variation in how these capabilities are expressed and supported.

Cross-cultural ethical dialogue remains both possible and necessary. When we engage with other cultures' moral practices — asking whether they respect human dignity, whether they allow people to live flourishing lives, whether they distribute burdens and benefits fairly — we are not simply imposing our own cultural standards but engaging in genuine moral reasoning that draws on shared human capacities for empathy, reason, and the recognition of suffering. Moral relativism, by denying the possibility of such dialogue, ultimately impoverishes both cross-cultural understanding and our own moral development. The challenge is to take moral diversity seriously without concluding that anything goes.