What Is Secularism? Meaning, Beliefs, History, Examples, And Criticism

Secularism is the political and philosophical principle that religion should be separate from the state, public institutions, and civic life — and that government decisions should be based on reason, evidence, and the common good rather than religious doctrine. It holds that no single faith should hold authority over public law, education, or governance, and that all citizens — religious or not — deserve equal standing before the state.

Secularism is not the same as atheism. A secular government can be full of deeply religious people; what makes it secular is that its laws and policies do not derive their authority from any sacred text or religious institution.

Quick Facts: Secularism at a Glance

Feature	Detail
Core Principle	Separation of religion and state
Origin	Coined by George Jacob Holyoake (1851), England
Philosophical Roots	Enlightenment, Stoicism, Classical Republicanism
Key Thinkers	John Locke, Voltaire, John Stuart Mill, Jean-Jacques Rousseau, Jawaharlal Nehru
Key Texts	A Letter Concerning Toleration (Locke, 1689), Two Treatises of Government (Locke, 1689)
Major Types	Hard secularism, Soft secularism, Assertive secularism, Passive secularism
Countries with Secular Constitutions	France, India, Turkey, USA, Mexico, South Korea
Opposite Concepts	Theocracy, State religion, Religious nationalism
Related Ideas	Laïcité (France), Pluralism, Religious freedom, Humanism
Still Relevant?	Yes — actively debated in law, education, and politics worldwide

Simple Definition of Secularism

At its simplest, secularism means that the government does not take sides on religion. Churches don’t run courts. Mosques don’t write tax law. Temples don’t decide school curricula. The state treats a Baptist, a Buddhist, a Muslim, an atheist, and an agnostic as equals — and makes its laws without privileging any one of their worldviews.

The word itself comes from the Latin saeculum, meaning “this age” or “this world” — as opposed to eternity or the divine. To be secular is to be concerned with the here and now, with earthly affairs governed by human reason rather than divine revelation.

It is important to note what secularism is not:

It is not anti-religion. Secular states protect the right to worship freely.
It is not atheism. Atheism is a personal belief; secularism is a principle of governance.
It is not the suppression of religion. It is the neutrality of the state toward religion.
It is not amoral. Secular ethics draws on reason, human rights, and shared civic values.

What Does Secularism Believe?

Secularism, as a doctrine, holds several interconnected beliefs about how societies should be organised:

1. Separation of church and state. Religious institutions should have no formal authority over government, and government should have no authority over religious doctrine. Each sphere is sovereign in its own domain.

2. Religious freedom for all. Every individual has the right to hold, practice, change, or abandon any religion — or none at all. This includes both the freedom of religion and the freedom from religion.

3. Equality before the law. No citizen receives fewer rights or greater burdens because of their faith. A Hindu and a Christian stand equal in court. A Muslim and an atheist hold equal claim to public services.

4. Public reasoning, not religious authority. Laws must be justified in terms that any citizen — regardless of faith — can in principle understand and evaluate. “Because God commands it” is not a valid basis for public law in a secular framework.

5. Pluralism as a civic value. Diverse religious and non-religious worldviews can coexist within a single political community. The state’s role is to manage that coexistence fairly, not to declare a winner.

6. Protection of conscience. No person should be compelled to participate in religious rituals, swear religious oaths, or subsidise religious institutions against their will.

What Problem Does Secularism Try to Solve?

Secularism emerged as a response to a cluster of deeply practical and historical problems — not as an abstract philosophical exercise.

The problem of religious war. In Europe, centuries of conflict between Catholics and Protestants — culminating in the Thirty Years’ War (1618–1648), which killed perhaps a third of Central Europe’s population — made it catastrophically clear that states built on religious uniformity were inherently unstable and violent. Secularism offered a peace treaty: the state would not take sides.

The problem of minority persecution. Where one religion holds state power, religious minorities are rarely treated equally. Jews, Muslims, Protestants, Catholics, and countless other groups have all experienced state-sanctioned discrimination when they were not members of the dominant faith.

Secular governance removes the mechanism through which majority faiths convert political power into religious oppression.

The problem of clerical authority over knowledge. When religious institutions control universities, courts, and scientific inquiry, the growth of knowledge is constrained by doctrinal commitments. The secular university — accountable to evidence and reason rather than orthodoxy — became the engine of the scientific and industrial revolutions.

The problem of political manipulation of religion. Secularism also protects religion from the state. When governments control churches, they use them as instruments of propaganda and social control. Secularism keeps religion independent, genuine, and self-governing.

The problem of conscience. Individuals have the right to arrive at their own convictions about ultimate questions. A state church, even a benevolent one, creates pressure for conformity that violates the deepest reaches of personal freedom.

History and Origins of Secularism

Ancient Roots

The idea that civic and religious authority should be distinct is not uniquely modern. Confucian political thought in China emphasised rational governance over priestly authority. Ancient Roman law distinguished between fas (divine law) and ius (human law).

Even within the Abrahamic traditions, the saying attributed to Jesus — “Render unto Caesar what is Caesar’s, and unto God what is God’s” — implies a boundary between temporal and spiritual power.

The Reformation and Religious Wars (16th–17th Century)

The Protestant Reformation shattered the unity of Western Christianity and made religious pluralism a political fact. By the mid-17th century, Europe had been devastated by wars fought in the name of religious truth. The Peace of Westphalia (1648) — which ended the Thirty Years’ War — established the principle of cuius regio, eius religio (whose realm, his religion), acknowledging that rulers, not universal religious authority, determined a nation’s faith.

This was an early, crude form of the state-religion relationship that secularism would later refine.

The Enlightenment (17th–18th Century)

The philosophical foundation of modern secularism was laid by Enlightenment thinkers who argued that reason, not revelation, should govern human affairs.

John Locke argued in A Letter Concerning Toleration (1689) that the state has no legitimate authority over the soul, and that religious persecution produces exactly the opposite of genuine faith.

Voltaire attacked clerical corruption and religious fanaticism with devastating wit. Rousseau theorised a “civil religion” — a minimal set of civic values separable from sectarian belief.

The American and French Revolutions (Late 18th Century)

Both revolutions institutionalised secular governance in different ways. The US Constitution’s First Amendment (1791) prohibited Congress from making any law “respecting an establishment of religion” — a radical novelty at the time. The French Revolution went further, actively dismantling the power of the Catholic Church and establishing laïcité as a national value — a more assertive form of secularism that would be formally codified in the 1905 Law on the Separation of the Churches and the State.

The 19th Century: Coining the Term

The word “secularism” was formally coined by the English writer George Jacob Holyoake in 1851. Holyoake wanted a term that could describe a positive, ethics-based alternative to religion — not merely atheism or anti-clerical politics, but a complete framework for organising life and society around reason, morality, and human welfare without reference to the supernatural.

The 20th Century: Global Spread

As colonialism receded and new nations formed, many adopted secular constitutions as a mechanism for managing religious diversity and preventing any single religion from dominating the new state. India under Jawaharlal Nehru became the world’s largest secular democracy.

Turkey, under Mustafa Kemal Atatürk, adopted an assertive, state-enforced secularism. Mexico enshrined secularism after centuries of Catholic Church dominance.

The 21st Century: Backlash and Contestation

In the 21st century, secularism faces significant political pressure from religious nationalist movements across the globe — in India (Hindutva), the United States (Christian nationalism), Turkey (political Islam under the AKP), and elsewhere.

The tension between secular governance and religiously motivated politics has become one of the defining conflicts of contemporary democracy.

Key Thinkers and Texts

John Locke (1632–1704)

A Letter Concerning Toleration (1689) and Two Treatises of Government (1689). Locke argued that the state’s purpose is the protection of civil goods — life, liberty, property — not the care of souls. Religious coercion is both illegitimate and counterproductive because genuine faith cannot be compelled.

Voltaire (1694–1778)

Treatise on Tolerance (1763). Voltaire’s polemic, written in the aftermath of the judicial murder of Jean Calas (a Protestant executed by Catholic authorities), became one of the most powerful arguments for religious tolerance and against clerical power in world literature.

Thomas Jefferson (1743–1826)

Jefferson famously described the First Amendment as building “a wall of separation between church and state.” His Virginia Statute for Religious Freedom (1786) was a direct precursor to the First Amendment.

John Stuart Mill (1806–1873)

On Liberty (1859). Mill’s liberal framework — especially the harm principle — provided a secular basis for personal freedom, including freedom of conscience and religious practice, grounded in reason rather than divine command.

George Jacob Holyoake (1817–1906)

Coiner of the term “secularism” and author of The Principles of Secularism (1871). Holyoake presented secularism not as an attack on religion but as a positive moral and civic philosophy.

Charles Bradlaugh (1833–1891)

A leading advocate of secularism in Victorian Britain, co-founder of the National Secular Society, and the first openly non-religious member of the British Parliament — who fought for years for the right to affirm rather than swear a religious oath.

Jawaharlal Nehru (1889–1964)

The Discovery of India (1946). Nehru’s vision of a secular India — a democracy capable of encompassing Hindus, Muslims, Sikhs, Christians, and others as equal citizens — shaped the Indian Constitution and remains an influential model of pluralist secularism.

Jürgen Habermas (b. 1929)

Contemporary German philosopher who has theorised the relationship between secular public reason and religious discourse, arguing in works like Between Naturalism and Religion (2008) that secular democracy must engage — not merely exclude — religious voices in the public sphere.

Main Types or Branches of Secularism

Secularism is not a single, uniform doctrine. Scholars and policymakers distinguish several distinct varieties:

1. Hard (Assertive) Secularism

The state actively marginalises religion from the public square. Religion is treated as a purely private matter, and its expressions in public life are restricted. France’s laïcité is the clearest example: religious symbols such as headscarves, crucifixes, and kippot are banned in public schools and government offices. Turkey’s Kemalist secularism was another historically assertive model.

Strength: Maintains a clear, enforceable boundary between religion and state.
Weakness: Can feel oppressive to deeply religious citizens who experience their faith as inherently public.

2. Soft (Passive) Secularism

The state is neutral between religions and between religion and non-religion, but does not actively suppress religious expression in the public sphere. Citizens — including public officials — may express religious views, but the state itself takes no religious position.

The United Kingdom and many Scandinavian countries, despite having established churches, practice something closer to soft secularism in their actual governance.

Strength: More tolerant of religious pluralism in public life.
Weakness: The boundary between state neutrality and implicit religious favouritism can be blurry.

3. Liberal Secularism

Rooted in John Rawls’s political philosophy, liberal secularism holds that the state must justify its laws in terms that all citizens — religious and non-religious — can accept in principle.

Religious arguments are not automatically excluded from political debate, but they must be “translated” into publicly accessible reasoning before they can legitimately inform law.

Strength: Respectful of religious citizens while maintaining secular public standards.
Weakness: The translation requirement can seem dismissive of traditions in which faith and reason are inseparable.

4. Political Secularism

A narrower, institutional version: the formal separation of church and state, guaranteed by constitutional law, without making broader claims about the role of religion in society. The United States model — officially secular government, vibrantly religious civil society — is the paradigm case.

5. Ethical/Humanist Secularism

Associated with figures like Holyoake, this tradition presents secularism not merely as a principle of governance but as an alternative ethical framework — one based on human reason, well-being, and solidarity rather than divine command. It is closest to what might broadly be called secular humanism.

Examples of Secularism in Real Life

France: Laïcité

France’s separation of church and state is among the strictest in the world. The 1905 law formally disestablished the Catholic Church and prohibited state funding of religious organisations.

Public schools are religion-free zones. In 2004, France extended the ban on religious symbols to schools, covering all conspicuous religious insignia.

This has generated intense controversy, particularly regarding Muslim women’s headscarves and, later, the full-face veil.

India: Constitutional Secularism

India’s Constitution (1950) declares the country a secular republic — notable given that the nation was founded alongside Pakistan, explicitly created as an Islamic state.

Indian secularism does not require the removal of religion from public life but mandates that the state treat all religions equally.

In practice, this has produced complex compromises, including allowing religious personal law systems for different communities while maintaining a common criminal code.

United States: The Wall of Separation

The First Amendment’s Establishment Clause prohibits the federal government from establishing a state religion or favouring one religion over others.

This has been interpreted through centuries of Supreme Court jurisprudence covering school prayer, public nativity scenes, government chaplains, and taxpayer funding of religious schools — with ongoing and hotly contested boundaries.

Turkey: Kemalist Secularism

Atatürk’s reforms of the 1920s and 1930s radically dismantled the Ottoman religious establishment: the caliphate was abolished, Islamic courts replaced by a civil code, religious dress restricted, and the call to prayer briefly required to be recited in Turkish rather than Arabic.

Turkey’s secularism was enforced by the military as a constitutional principle — until the AKP government of Recep Tayyip Erdoğan began rolling back many of these provisions from 2002 onward.

Mexico: Secular State after Religious Dominance

After independence, Mexico’s liberal reformers — particularly under Benito Juárez in the mid-19th century — stripped the Catholic Church of its vast landholdings, political influence, and legal privileges.

The 1917 Constitution went further, banning religious organisations from owning property and clergy from public office. These restrictions were relaxed in the 1990s but Mexico remains constitutionally secular.

Everyday Secular Institutions

Secularism also manifests in the mundane architecture of modern life: civil marriage (a legal contract independent of religious ceremony), secular public hospitals and schools, secular courts that judge evidence rather than religious testimony, and secular oaths or affirmations that replace religious ones in legal proceedings.

Strengths of Secularism

Protection of religious minorities. When no single religion holds state power, minority faiths are far better protected. History demonstrates with grim consistency that theocratic or confessional states oppress those who do not belong to the dominant faith.

Promotion of genuine religious freedom. Paradoxically, secularism is one of religion’s best protections. A secular state cannot force citizens to adopt a particular faith — but nor can it suppress sincere religious practice. Religious diversity flourishes most reliably under secular governance.

Reduction of religiously motivated violence and conflict. States that remove religion from political competition reduce one of history’s most potent sources of civil war and communal violence. The Westphalian settlement and the subsequent development of secular governance in Europe are inseparable from the end of the continental wars of religion.

Accountability through reason. When laws must be justified by publicly accessible reasons rather than divine authority, they become open to rational scrutiny, revision, and democratic challenge. No law can hide behind the claim that God commands it.

Adaptation to diverse, pluralist societies. Modern nations are profoundly multi-faith. A secular framework is the only coherent basis for governing a society in which Hindus, Muslims, Christians, Buddhists, Jews, and atheists all claim equal citizenship.

Protection of science and knowledge. Secular institutions — particularly universities and research bodies — have been the primary engines of scientific advance. Where religious authority governs knowledge, inquiry is constrained by doctrinal commitments.

Criticisms of Secularism

It is not truly neutral. Critics — especially from religious traditions — argue that secularism is not a neutral playing field but itself a substantive worldview, one that privileges rationalism, individualism, and scientific materialism over other ways of knowing.

By excluding explicitly religious reasoning from public law, secularism imposes its own values under a mask of neutrality.

It marginalises religious citizens. When religious arguments are deemed inadmissible in public debate, people of deep faith are effectively told to leave their most fundamental commitments at the door of civic life.

This is experienced as a form of second-class citizenship — you may participate in democracy, but only if you translate your convictions into secular language first.

It has historically been a tool of empire and cultural imperialism. The imposition of secular governance on colonised peoples — particularly in the Muslim world — was often accompanied by the suppression of indigenous religious practices and institutions. “Secularism” in these contexts was not neutral but was a carrier of specifically European, post-Christian values.

It has its own fundamentalisms. Hard secularism in France has been criticised for producing its own brand of intolerance — one that cannot accommodate religious expression in any public space and that disproportionately burdens Muslim women who face a binary choice between their faith and full participation in civic life.

It may undermine social cohesion. Religious institutions have historically provided crucial social infrastructure — education, healthcare, charity, community. A rigidly secular state that removes religion from public life without replacing this infrastructure may produce moral and social atomisation.

It rests on contested philosophical assumptions. The liberal-secular insistence on individual conscience, rational autonomy, and the public/private distinction is itself a particular philosophical tradition — not a universal, self-evident framework. Communitarian critics argue that it underestimates the degree to which human identity is constituted by community, tradition, and — for billions of people — faith.

Post-secular critics argue it is historically dated. Thinkers including Jürgen Habermas have argued that the “secularisation thesis” — the prediction that modernisation would inevitably reduce religion’s social role — has not come true. Religion remains enormously powerful worldwide. A politics that simply ignores this is descriptively false and normatively inadequate.

Secularism vs Religion

It is essential to distinguish between secularism and anti-religion, though the two are frequently conflated — sometimes deliberately, by political actors seeking to frame secularism as an attack on faith.

	Secularism	Religion
Domain	Governance, law, public institutions	Personal belief, practice, community, meaning
Question it answers	How should a diverse society be governed?	What is the nature of ultimate reality and how should we live?
Stance on the other	Neutral — protects religious freedom	Varies widely; most traditions accept some distinction between spiritual and temporal authority
Basis for authority	Reason, consent, democratic legitimacy	Revelation, tradition, religious authority
Relationship	Can coexist — many deeply religious people support secular governance

The tension between secularism and religion is real, but it is most acute at the margins — in debates over abortion, LGBTQ+ rights, religious dress in schools, the teaching of evolution, and the public funding of faith-based institutions. At the core, secularism does not say “religion is false.” It says “religion is not the basis of our collective law.”

A useful distinction is between political secularism (a principle of governance) and philosophical secularism (a worldview that holds that only the natural world exists).

Confusing the two produces much unnecessary conflict. One can be a devout believer and fully support political secularism — as millions of people across the world are.

Is Secularism Good or Bad?

Secularism — like most political principles — is neither good nor bad in the abstract. Its value depends on what it is protecting, how it is applied, and what context it operates within.

Where secularism has been demonstrably good: In highly diverse, multi-faith societies, secular governance has enabled political coexistence between communities that might otherwise be in violent competition. The protection of religious minorities in secular constitutional democracies is, on the historical record, substantially better than under confessional or theocratic states.

Where secularism has been applied badly: Hard-line versions that treat religion as inherently dangerous — to be driven out of public life entirely — have produced their own forms of intolerance.

The aggressive Kemalist secularism that banned the headscarf from Turkish universities, or the French state’s repeated confrontations with Muslim communities over laïcité, illustrate how secularism can become a cudgel rather than a shield.

The honest verdict: The principle of separating religious authority from political power is one of the durable achievements of the Enlightenment — and the historical record of theocracies and confessional states provides abundant justification for it.

But the application of that principle requires humility, contextual sensitivity, and a genuine commitment to protecting all citizens’ rights — including the right to be visibly, publicly, and proudly religious.

Secularism is not an endpoint. It is a framework within which the ongoing negotiation between different visions of the good life can take place — peacefully, and with equal rights for all.

Is Secularism Still Relevant Today?

Yes — emphatically so. Secularism is not an achieved settlement but an ongoing political contest. Several developments make it acutely relevant in the 2020s:

The global rise of religious nationalism. From India’s BJP and its Hindutva ideology to Christian nationalist movements in the United States, Brazil, and Eastern Europe; from political Islam in the Middle East to Buddhist nationalism in Myanmar — religious movements are actively challenging secular constitutional orders around the world. The principles of secular governance are not self-sustaining; they require active defence.

New forms of the church-state question. Contemporary battles over abortion rights, LGBTQ+ equality, faith-based adoption agencies, religiously motivated vaccine exemptions, and the place of religion in public schools all require careful thinking about the proper relationship between religious conscience and secular law.

The headscarf and religious expression debates. Questions about whether secular states can require religious believers to suppress visible symbols of faith — headscarves, crucifixes, turbans, kippot — are intensely contested in France, Germany, Canada, and many other democracies. These debates require a nuanced secularism that can distinguish between state neutrality and state hostility.

Post-secular democracies. Many scholars argue that Western liberal democracies must move beyond a simple secular-vs-religious binary and develop frameworks for what Habermas calls the “post-secular society” — one that acknowledges both the legitimacy of secular public reason and the continuing importance of religious traditions in shaping citizens’ deepest commitments.

Artificial intelligence and ethics. As AI systems begin to make consequential decisions about human lives, the question of what ethical framework should govern them — secular, religious, or some synthesis — is beginning to emerge as a serious public question.

Probinism Perspective on Secularism

Probinism — as a critical-inquiry framework concerned with probing the foundational assumptions of political doctrines and testing their coherence against lived human experience — approaches secularism with neither reflexive endorsement nor reflexive rejection.

From a Probinist standpoint, several probing questions are essential:

Does secularism deliver its own promise? Secularism promises equal treatment of all citizens regardless of faith. The Probinist asks: does it, in practice? In the United States, “secular” public life is saturated with Protestant Christian assumptions about working weeks, holidays, and civic norms. A secularism that claims neutrality while quietly encoding majority-culture preferences is not delivering its foundational commitment.

Is the public/private distinction coherent? Secularism often asks religious citizens to keep their faith “private.” But for many traditions, faith is not a private matter — it is a total way of life that includes dress, diet, family structure, economic relationships, and political participation. The Probinist perspective takes this seriously rather than dismissing it as obscurantism.

What fills the vacuum? When secularism displaces religious authority, what replaces it as the source of moral community, shared meaning, and social solidarity? The Probinist warns against assuming that rational individualism is a sufficient substitute — the evidence from highly secularised societies suggests that the collapse of religious community correlates with rising loneliness, social fragmentation, and — in some contexts — susceptibility to secular ideological extremisms.

Who decides what counts as “public reason”? The liberal-secular insistence that public law must be justified in terms accessible to all citizens sounds fair in principle. But the Probinist presses: who adjudicates what counts as “publicly accessible”? In practice, this judgment has often been made by educated elites whose own liberal-secular commitments they fail to recognise as substantive philosophical positions.

The irreducible tension. Probinism ultimately identifies secularism as a genuine achievement that solved a real and bloody problem — the violence of states built on religious uniformity — but one that carries its own unresolved tensions, particularly between formal neutrality and substantive pluralism. The honest Probinist conclusion is that secularism is better than the alternatives yet still incomplete: a work-in-progress rather than a solved problem.

FAQs About Secularism

What is secularism in simple terms?

Secularism means that the government does not favour any religion, and that laws are based on reason and the common good rather than religious doctrine. Everyone — religious or not — has equal rights as a citizen.

Is secularism the same as atheism?

No.

Atheism is the personal belief that God does not exist. Secularism is a principle about how government should operate. A deeply religious person can fully support secularism, and many do.

Which countries are secular?

Countries with formally secular constitutions include the United States, France, India, Turkey, Mexico, South Korea, Japan, and many others. However, the degree and style of secularism varies enormously between them.

Is secularism anti-religious?

No. Secularism protects religious freedom — including the freedom to worship, practice, and organise. It opposes state religion, not religion itself.

What is the difference between secularism and laïcité?

Laïcité is the French model of secularism, characterised by strict removal of religion from public institutions and public space. It is a more assertive form of secularism than the Anglo-American model, which generally tolerates more religious expression in public life.

Why is secularism important?

Because it protects minority faiths from majority religious domination, creates a level political playing field for citizens of all beliefs, allows laws to be based on reason and evidence, and provides a framework for diverse societies to coexist peacefully.

Can a religious person support secularism?

Yes, and many do. Secularism protects religious freedom — which means it protects religious believers as much as anyone else. In fact, members of minority religious communities often have strong reasons to support secular governance, since they benefit most from state neutrality.

What is the difference between secularism and humanism?

Secular humanism is a complete philosophy of life — an ethical framework based on reason and human welfare without reference to the supernatural. Secularism, in its political sense, is narrower: it is a principle of governance, not a complete worldview.

One can be a secular humanist, but one can also be a religious believer who supports secular governance.

Is secularism Western?

The modern doctrine of secularism was largely developed in Western Europe and North America.

But the practical need for state neutrality between religions is not uniquely Western — it has emerged in South Asia, East Asia, Africa, and the Middle East wherever religiously diverse societies have sought peaceful coexistence.

Many non-Western thinkers have developed and adapted secular principles for their own contexts.

Is secularism dying?

Not dying, but contested. Religious nationalist movements have challenged secular arrangements in many countries. At the same time, secular norms remain embedded in international human rights law and in the constitutional orders of most of the world’s democracies.

The contest is real, but reports of secularism’s death are premature.

Table of Contents