Does Jürgen Habermas's position on the "post-secular" succeed in finding a legitimate place for religion in public discourse, or does it remain confined to the private sphere?

This question addresses one of the most important shifts in Habermas's late thought: his revision of his position on the role of religion in the public sphere. The shift from "secularization" to the "post-secular" represents a qualitative leap in contemporary political philosophy, especially in the context of post-Cold War Europe and the global rise of religious fundamentalisms.

Inadequate Responses to Avoid

From some defenders of religion:

"Habermas finally acknowledged the importance of religion." This is a misleading simplification. Habermas did not "acknowledge" religion in the traditional sense, but rather reassessed its possible role in deliberative democracy. His position remains essentially secular, with a pragmatic openness to translated religious contributions.

"Post-secular means the end of secularism." This is a conceptual error. "Post-secular" for Habermas does not mean transcending secularism, but rather reformulating it to accommodate the reality of religion's persistence in modern societies. The state remains neutral, but civil society opens to religious voices under certain conditions.

"Habermas supports religion entering politics." This misrepresents his position. Habermas carefully distinguishes between the informal public sphere (civil society, media) where religious discourse is permitted, and the formal institutional sphere (parliament, courts) where secular translation is required.

From some strict secularists:

"Habermas betrayed the Enlightenment project." This is an emotional accusation. Habermas sees that the incomplete Enlightenment needs to incorporate the normative potentials of religious traditions, not reject them. This is a development of the Enlightenment, not a betrayal of it.

"Allowing religion in public discourse threatens rationality." These are exaggerated fears. Habermas requires religious discourse to submit to public reason standards: argumentation, debate, criticizability. The religion that is accepted is that which accepts these conditions.

"Secular translation empties religion of its content." This criticism has partial validity, but Habermas responds that translation does not exhaust religious content, but makes some of it available for public debate. The private spiritual dimension remains preserved.

Why These Responses Are Inadequate

They share in oversimplifying a complex position. Habermas does not offer a definitive "solution" to the question of religion and politics, but rather an attempt to reformulate the relationship in light of contemporary challenges: the persistence of religion, cultural pluralism, and the crisis of meaning in secular societies.

The Evolution of Habermas's Position: From Secularization to Post-Secular

In his early works (The Structural Transformation of the Public Sphere, 1962), Habermas adopted the classical secularization narrative: religion retreats with the advance of rationalization and modernity. The bourgeois public sphere emerged as a secular space for rational debate.

In Theory of Communicative Action (1981), he developed a theory of "linguistification" of the sacred: what was sacred is gradually translated into rational discourse open to debate. Religion is preserved in the private sphere, while communicative reason governs the public sphere.

The transformation began in the 1990s and crystallized in:
- "Faith and Knowledge" (Peace Prize speech, 2001)
- Between Naturalism and Religion (2005)
- "Notes on a Post-Secular Society" (2008)
- The Power of Religion in the Public Sphere (with Taylor and others, 2011)

The Concept of "Post-Secular"

"Post-secular" for Habermas refers to a dual condition:

1. Descriptively: Recognition that religion has not disappeared as classical secularization theories expected. Religion transforms and adapts, but remains an influential social force.

2. Normatively: The need to rethink religion's role in deliberative democracy. Secular society needs to learn from religious traditions, just as believers need to accept the conditions of pluralism.

The Central Thesis: Institutional Translation

Habermas distinguishes between two levels:

First Level: The Informal Public Sphere
- Civil society, associations, media, public debates
- Religious discourse is permitted in its own language
- Believers have the right to express their religious convictions directly
- Condition: accepting pluralism and respecting others

Second Level: The Formal Institutional Sphere
- Parliaments, courts, government administrations
- "Translation" into secular language is required
- Decisions must be justified by arguments everyone can accept
- The "institutional filter" converts religious inputs into secular outputs

Example of Translation

Religious argument: "Abortion is sin because God creates the soul at conception"

Possible secular translation: "The fetus has a right to life because it is a potential human being deserving moral protection"

Translation preserves normative content (protecting life) but formulates it in language that non-believing citizens can evaluate by public reason standards.

Mutual Learning Obligations

Habermas proposes that the "post-secular" imposes obligations on both sides:

On Religious Citizens:
- Accept secular reason's authority in the political realm
- Recognize the legitimacy of other viewpoints
- Develop capacity for "translation" when necessary
- Distinguish between personal conviction and public argument

On Secular Citizens:
- Openness to normative potentials of religious languages
- Not exclude religious contributions in advance
- Recognize that secular reason may sometimes be "narrow"
- Participate in translation, not impose it unilaterally

Religion's Normative Potentials

Habermas sees religious traditions as containing "semantic resources" that secular reason alone cannot generate:

- Concepts of absolute justice and universal solidarity
- Hope in the face of despair and suffering
- Capacity for deep moral motivation
- Critique of ideologization and reification in late capitalism

Example: The concept of "human dignity" in human rights has religious roots (imago Dei) that have been secularized. But the secular version may lose some of the motivational force of the religious original.

Critique of the Habermasian Position

From the Religious Right:

The basic criticism is that "translation" distorts the religious message. William Connolly and Stanley Hauerwas argue that demanding translation assumes the superiority of secular reason and reduces religion to merely a source of secular arguments.

Christopher Eberle contends that some religious truths are in principle untranslatable. Concepts like "salvation" or "holiness" lose their essential meaning when secularized.

From the Secular Left:

Paolo Flores d'Arcais sees Habermas as opening the door too much to religion. Allowing religious discourse in the public sphere threatens liberal neutrality and can lead to religious majority dominance.

Cristina Lafont poses a dilemma: either citizens are allowed to vote according to their religious convictions (threatening democratic legitimacy), or they are asked to vote against their consciences (threatening authenticity).

From a Postcolonial Perspective:

Talal Asad and Saba Mahmood criticize Habermas's assumption that "religion" and "secular" are universal categories. This distinction is the product of a particular European experience, and imposing it on other contexts represents epistemic violence.

From Analytic Philosophy of Religion:

Nicholas Wolterstorff argues that the requirement for "reasons everyone can accept" is illusory. In a deeply pluralistic society, there are no truly neutral reasons. Honesty requires allowing people to argue from their particular positions.

Contemporary Developments (2018-2026)

The debate has evolved in multiple directions:

"Agonistic Democracy" Stream (Chantal Mouffe, William Connolly):
Rejects Habermas's ideal of rational consensus. Democracy is permanent struggle between competing visions, and religion is a legitimate part of this struggle.

"Contextual Secularism" Stream (Rajeev Bhargava, Alfred Stepan):
Proposes that each society needs its own formula for the relationship between religion and state. The European model (even in Habermas's version) is not universal.

"Critical Post-Secularism" Stream (Jürgen Manemann, Michele Dillon):
Develops Habermas's vision with greater focus on critiquing late capitalism. Religion as a critical force against neoliberalism, not just a source of meaning.

Where We Stand in This Debate Today

The debate over the "post-secular" has not lost momentum but deepened in the 2020-2026 period under pressure from new crises: the rise of religious populism in Western democracies and the Global South, the COVID-19 pandemic that forcefully returned religious discourse to the public sphere, and wars with religious dimensions that exposed the fragility of coexistence models. Habermas's latest book Also a History of Philosophy (2019) reframed the relationship between faith and knowledge within a comprehensive philosophical history, but did not resolve structural problems. Postcolonial criticism (Asad, Mahmood, Bhargava) is gaining influence, demanding transcendence of the European religious/secular binary. The "multiple secularisms" stream is advancing academically. The philosophically sound position today: Habermas's thesis remains an indispensable reference framework, but needs fundamental modifications to accommodate civilizational pluralism and transcend Eurocentric definitions of both "religion" and "secular."

From the Perspective of Rational Preferability (rajḥān ʿaqlī)

Habermas's position offers an important contribution but is insufficient for establishing religion's place in the public sphere:

─ He is correct in rejecting the a priori exclusion of religious discourse, because exclusion assumes certainty about religion's inability to provide normative truths—an unproven assumption.
─ He is correct in requiring rational argumentation, because the public sphere requires a shared language.
─ But he weakens his position by reducing religion to "semantic resources" without evaluating its truth claims. The question is not only: "Is religion socially useful?" but: "Are its claims true or rationally preferable?"
─ The cumulative rational preferability method transcends this shortcoming: if cosmological, moral, and consciousness-related evidence accumulates in favor of God's existence, then the legitimacy of religious discourse is derived not only from its social utility, but from its epistemic strength.

Religion that deserves a place in public discourse is not only what accepts the conditions of Habermasian translation, but what provides cumulative argumentation that makes it rationally preferable—this is preferability, not definitive certainty.