What is the secularization thesis (Wilson, early Berger), and why did some of its proponents later revise it?

The secularization thesis was one of the most influential theories in the sociology of religion in the twentieth century, before undergoing radical revisions by some of its most prominent theorists. This transformation is considered one of the most important developments in understanding the relationship between religion and modernity.

Inadequate Responses to Avoid

From some believers: "The secularization thesis was a conspiracy against religion" is an unhelpful oversimplification. Most secularization theorists were serious social scientists attempting to understand real transformations in Western societies. "The thesis's failure proves religion's victory" is an unjustified leap. The revisions mean that the relationship between religion and modernity is more complex than previously thought, not that religion has "triumphed."

From some secularists: "The thesis is correct, the revisions are merely political concessions" denies the evidence. The revisions are based on rigorous field research. "Religion will eventually disappear, it's just a matter of time" represents an ideological attachment to a discredited scientific thesis.

Content of the Classical Secularization Thesis

The thesis in its classical formulation (1960s-1980s) states: with the advancement of modernity, religion will inevitably decline on three levels:

First Level: Institutional Differentiation
Religion will separate from other societal institutions (politics, economics, education, health). This separation is inevitable and irreversible.

Second Level: Social Decline
Religion will lose its influence on social decisions and collective behavior. Religious standards will be replaced by rational secular standards.

Third Level: Individual Decline
Individuals will become less religious. Religious faith will weaken, practices will decline, religious identity will dissolve.

Key Theorists

Bryan Wilson (1926-2004): British sociologist, one of the leading theorists of secularization. In "Religion in Secular Society" (1966) he provided the most coherent formulation of the thesis. He saw secularization as an inevitable process linked to rationalization in the Weberian sense.

Peter Berger (1929-2017): American-Austrian sociologist. In "The Sacred Canopy" (1967) he presented an advanced theory of how religious pluralism leads to the weakening of the "sacred canopy" that religion provided for society. Pluralism makes religion a "choice" rather than "fate," and this weakens it.

Other theorists: Thomas Luckmann, David Martin, Steve Bruce. All provided different formulations, but the core was the same: modernity inevitably leads to religious decline.

Theoretical Foundations of the Thesis

The thesis was built on several assumptions:

1. Weberian Rationalization: Max Weber saw "disenchantment of the world" (Entzauberung) as an inevitable process. Science replaces religion in explaining the world.

2. Functional Differentiation: Émile Durkheim saw societies evolving from simple to complex through differentiation. Religion performed multiple functions that would be taken over by specialized institutions.

3. Conflict Between Science and Religion: The assumption that science and religion are in fundamental conflict, and that the advancement of one means the decline of the other.

4. Modernization as a Single Force: The assumption that modernity is a single, homogeneous process that will affect all societies in the same way.

Why the Thesis Seemed Convincing

In the 1960s and 1970s, the evidence seemed to support the thesis:
- Declining church attendance in Western Europe
- Weakening influence of religious institutions
- Spread of secular values among elites
- Success of secular systems (Soviet Union, China, Ataturk's Turkey)

Beginning of Doubts and Revisions

In the 1980s and 1990s, doubts began:

The Iranian Revolution (1979): A shock to the theory. A relatively modern state choosing a religious system.

Global Religious Awakening: Increasing religiosity in Latin America, Africa, Asia. Even in America, religiosity remained strong despite advanced modernity.

Collapse of Communism: Regimes that tried to eliminate religion failed, and religion returned strongly in Russia and Eastern Europe.

Internal Diversity in the West: Even in "secular" Europe, complex patterns emerged: individual religiosity without institutions, new spiritualities, return to religion among immigrants.

Peter Berger's Revision

Berger was among the earliest and most courageous revisionists. In "The Desecularization of the World" (1999) he declared explicitly:

"Our theory of secularization was wrong. The world today, with few exceptions, is as religious as it ever was, and in some places more religious than before."

His revision included:
- Acknowledging that modernity does not inevitably lead to secularization
- Distinguishing between Western Europe (the exception) and the rest of the world (the rule)
- Recognizing that pluralism may strengthen religion rather than weaken it (through competition)
- Understanding that religion adapts to modernity rather than disappearing

Other Revisions

José Casanova in "Public Religions in the Modern World" (1994): Distinguished between three dimensions of secularization. Institutional differentiation is real, but social and individual decline are not inevitable.

Grace Davie: Developed the concept of "believing without belonging" to describe the European situation. People still believe but don't attend churches.

Charles Taylor in "A Secular Age" (2007): Provided a deeper understanding. Secularization is not the disappearance of religion, but a transformation in the conditions of belief. Religion has become a "choice" among choices, and this changes its nature without eliminating it.

Alternative Theories

Instead of the linear secularization thesis, more complex theories emerged:

Religious Market Theory: Rodney Stark and Roger Finke. Religion flourishes under conditions of competition and pluralism, weakens under monopoly conditions.

Multiple Modernities Theory: Shmuel Eisenstadt. There is no single modernity, but multiple modernities, some secular and some religious.

Religious Transformation Theory: Religion doesn't disappear but transforms. New forms of religiosity and spirituality emerge.

Current State of the Debate

Current consensus:
- Secularization is not a historical inevitability
- The relationship between religion and modernity is complex and variable
- Western Europe is an exception, not the rule
- Religion shows remarkable capacity for adaptation and continuity
- Predicting religion's future is extremely difficult

Philosophical Lessons

First: The danger of historical determinism. Assuming that history moves in a single predetermined direction is a recurring error.

Second: The importance of epistemic humility. Even the best scholars may err when attempting to predict social futures.

Third: The complexity of religious phenomena. Religion is deeper and more flexible than reductionist theories assumed.

Fourth: The danger of generalizing from the European context. What happened in Western Europe is not a global model.

For Advanced Reading

- Advanced level: Charles Taylor's theory of the secular age and transformations of belief
- Peter Berger (ed.), The Desecularization of the World (Eerdmans, 1999)
- José Casanova, Public Religions in the Modern World (Chicago UP, 1994)
- Charles Taylor, A Secular Age (Harvard UP, 2007)
- Grace Davie, Religion in Britain Since 1945 (Blackwell, 1994)
- Page "Topic: Religion and Modernity" on the website