Fundamentals

Liberalism and pluralism: living with disagreement

By Daniel Sardá · Published on October 05, 2026

7 min read1,406 words

A free society does not require everyone to share the same idea of a good life. It needs rules that let people disagree without turning one particular conviction into an obligation for everyone else.

Two citizens may live under the same laws and yet disagree profoundly about religion, family, morality, education, or what makes a life go well. That difference is not an anomaly for politics to correct. It is a normal condition of free societies.

The problem begins when one of those convictions seeks to become a binding rule for everyone through public power. The relationship between liberalism and pluralism is best understood through this question: how can people with incompatible ideas live together without some having to submit to the life plans of others?

The liberal answer is not to erase disagreement or to declare every option equally valuable. It is to limit coercion, protect equal rights, and establish common rules within which each person can direct their own life.

Key idea: Liberal coexistence does not require agreement about the good life; it requires limits on imposing one answer by force.

From diversity to pluralism

Diversity describes a fact: people hold different beliefs, identities, preferences, and customs. Pluralism makes a more demanding claim. It recognizes that genuine goods can conflict and that there may not always be a single measure that ranks them for every case.

Liberty and security, for example, both matter, but they can pull in different directions. So can equality, autonomy, tradition, loyalty, and creativity. Choosing between them sometimes involves a real loss: protecting one value may reduce the room available for another.

This idea is especially associated with Isaiah Berlin. His account of value pluralism holds that some human ends can be incompatible and incommensurable. That does not mean every preference is sound, every act must be accepted, or we cannot reason about our choices. It means moral life can contain conflicts for which no perfect solution preserves every good at once.

For that reason, pluralism is not relativism. Relativism is often understood as denying shared standards for judging between alternatives. Pluralism, by contrast, allows us to recognize real values, criticize abuses, and defend limits, even while denying that all goods always fit into one unified and harmonious system.

What liberalism adds

Pluralism helps explain why conflict arises, but it does not by itself determine how a society should be organized. The existence of multiple values does not automatically entail a liberal regime. John Gray, among other critics, has questioned precisely the claim that pluralism necessarily leads to liberal morality or institutions.

The liberal argument adds further premises: people should enjoy equal liberty, coercion requires justification, and power should not simply impose a contested conception of the good life. Rather than asking which human ideal society as a whole should pursue, it asks what conditions allow different citizens to act as free and equal persons.

That is why liberties of conscience, expression, association, and religion matter. They are not prizes granted to ideas a majority regards as correct. They are safeguards against arbitrary power, making it possible for individuals and communities to develop different projects within a common framework. Individual liberty does not eliminate rival convictions; it prevents one from being imposed on the rest without justification.

Imagine two neighbors with opposing religious convictions. One sees freedom of conscience as required by faith; the other defends it because no authority should decide what anyone must believe. They do not share an ultimate reason, yet both can support the same legal protection. Their political convergence does not erase their moral difference.

Key idea: Pluralism identifies conflicts among goods; liberalism offers rights, procedures, and limits on power for living with them.

To tolerate is not to approve

In everyday language, tolerance can suggest sympathy, openness, or indifference. In political terms, liberal tolerance contains a sharper tension: someone disapproves of a belief or practice, has reasons to object to it, and yet recognizes stronger reasons not to prevent it by force.

To tolerate, then, is not to approve. Nor does it require suspending moral judgment. Someone may regard another person's religion, manner of dress, or public opinion as mistaken while defending that person's freedom to hold it.

But tolerance alone can be fragile. If a minority depends on the goodwill of the majority, what is permitted today may be prohibited tomorrow. A right provides a different kind of protection: it does not rest on the sympathy of those with greater power or on permission that can be withdrawn at discretion.

It is also important to distinguish respect from agreement. Political respect is owed to a person as the holder of equal liberty, not necessarily to every one of their ideas. One can firmly challenge an argument, try to persuade the person who holds it, and leave their right to express it intact.

This distinction avoids two extremes. The first makes social approval a condition of coexistence. The second mistakes freedom for an absence of criticism. A plural society needs both room to live differently and room to debate those differences.

Political consensus or mere coexistence?

One influential response to modern disagreement comes from John Rawls's political liberalism. Its starting point is reasonable pluralism: under free institutions, people reasoning in good faith can arrive at incompatible religious, philosophical, and moral doctrines.

Rawls calls an overlapping consensus the support that those different doctrines can give to the same political conception for their own reasons. This is not moral unanimity. Each group keeps its deeper beliefs while finding within them reasons to accept shared liberties and political principles.

Another possibility is a modus vivendi: a practical arrangement of coexistence among groups that remain in disagreement. In Gray's work, this approach emphasizes the contextual character of politics in the face of conflicts that may not admit a higher reconciliation. Its appeal is realism: peace sometimes depends on concrete compromises rather than a common justification.

The difference matters. An overlapping consensus aims at stability sustained by normative reasons from diverse perspectives. A modus vivendi may depend more on an equilibrium of interests and therefore be more vulnerable when the distribution of power changes. At the same time, it may adapt better to circumstances in which a more ambitious consensus is unavailable.

No universal formula is needed to grasp the central point: political coexistence can rest on different reasons and does not need to settle every philosophical dispute before it can produce legitimate rules.

Pluralism also needs limits

Recognizing disagreement does not mean that everything must be permitted. One person's liberty exists alongside the equal liberty of others. Threats, violence, fraud, or the deprivation of rights do not become acceptable merely because they express a tradition or a sincere conviction.

The challenge is to formulate limits through general rules, applicable without turning one group's preference into a privilege. Restrictions require public justification: they should show which right they protect, what harm they seek to prevent, and why coercion is necessary. Invoking disgust, custom, or the majority's moral superiority is not enough. A constitutional order gives these requirements institutional form.

This does not make the state neutral in every possible sense. A liberal order is not indifferent to violence, arbitrary censorship, or legal discrimination. It favors certain political conditions—equality before the law, basic liberties, and limits on power—that allow diverse human projects to coexist. When neutrality is invoked, it must be specified: neutral with respect to which ends, by which means, and within what limits.

Key idea: Protecting pluralism does not mean giving up common rules. It means requiring those rules to safeguard equal rights and requiring coercion to be justified.

Institutions for free disagreement

Liberalism does not promise to reconcile every value or turn conflict into harmony. Its contribution is more modest and, at the same time, more demanding: to keep every disagreement from becoming a struggle to seize power and compel everyone else.

When freedom of conscience, individual rights, legal equality, and general rules operate as effective limits, losing a political argument should not mean losing the ability to live by one's convictions. And winning a majority should not grant a license to impose a complete vision of the good life.

A plural society will necessarily be uncomfortable. There will be criticism, hard choices, and goods that cannot all be preserved at once. The test of its institutions is not whether they eliminate that discomfort, but whether they allow disagreement to continue without collapsing into domination. That is what it means to live together in freedom: to share a political framework without having to share one moral destiny.