The discipline that tries to study religions from outside any one of them. Its founders, its assumptions, its critics — and the question of whether the very category "world religions" is a colonial artefact in scholarly costume.
"He who knows one, knows none." Friedrich Max Müller's phrase, lifted from Goethe and applied to religions, became the founding aphorism of comparative religion in the 1870s. To understand any single tradition you have to compare it with others, because what looks like the essence of your own from inside is just one variant from outside.
Comparative religion — also called the history of religions, religious studies, or the academic study of religion — is the discipline that takes religions as objects of secular scholarship rather than as truth-claims to be defended or refuted. It assumes a working agnosticism. It produces taxonomies, genealogies, phenomenological descriptions, and comparisons across traditions.
This deck covers the founders (Müller, Tiele, Otto, Eliade, Smart), the methods (phenomenological, historical, sociological, anthropological), the canonical "world religions" framework, the postcolonial critique of that framework (Masuzawa, J.Z. Smith, McCutcheon), and where the field stands now.
The discipline's first problem is that no one can define its object. Every proposed definition either excludes things commonly counted as religion or includes things not commonly counted.
Substantive definitions identify religion by content: belief in supernatural beings (Tylor, 1871), the holy (Otto, 1917), ultimate concern (Tillich, 1957). These exclude non-theistic Buddhism, certain Daoist forms, and ritual traditions without doctrinal cores.
Functional definitions identify religion by what it does: provides social cohesion (Durkheim, 1912), explains suffering (Geertz, 1966), maps a sacred canopy (Berger, 1967). These tend to include nationalism, sport, consumerism — anything that performs the same social work.
Family-resemblance definitions (Wittgenstein-influenced; Saler, Smart) abandon necessary-and-sufficient conditions. Religion is what fits a cluster of features — myth, ritual, ethics, experience, doctrine, institutions, materiality. No single feature is required.
Most contemporary scholars work pragmatically: define religion locally for the specific question, acknowledge the term is European in origin and contested in scope. The Latin religio meant binding obligation; "religion" as a class of comparable systems is a 17th-19th-century invention.
F. Max Müller (1823-1900), German-born Oxford philologist, founded comparative religion as an academic project. His Royal Institution lectures of 1870, published as Introduction to the Science of Religion (1873), set the programme: comparative philology had revealed the Indo-European language family; comparative religion would do the same for religious traditions.
Müller edited the 50-volume Sacred Books of the East (1879-1910), the first systematic English translation of major Asian scriptures — Vedas, Upaniṣads, Bhagavad Gītā, Avesta, Pāli Canon, Confucian classics. The series made non-Christian texts accessible to Western readers as scriptures — comparable to the Bible — for the first time.
His method was philological-historical: trace the development of religious ideas through textual evolution. His theory was solar-mythological — many myths, he argued, are encoded descriptions of sun and sky phenomena (a thesis later mostly abandoned).
What survived: the comparative ambition, the canon of major scriptures, the assumption that religions can be studied as objects with histories. What did not: the specific evolutionary scheme (primitive → polytheistic → monotheistic), the privileging of Sanskrit and Aryan traditions, the equation of religion with text.
Parallel to Müller's philological project, an anthropological tradition emerged. E.B. Tylor (1832-1917) in Primitive Culture (1871) defined religion as "belief in spiritual beings" and proposed animism — the attribution of soul or spirit to all things — as the original religious form. Tylor's evolutionism: animism → polytheism → monotheism → (eventually) science.
James Frazer (1854-1941) extended the project in The Golden Bough (first edition 1890; final 12-volume edition 1915). The book gathered ritual practices from across cultures into a sweeping argument: magic precedes religion which precedes science; the dying-and-rising god is a near-universal pattern; vegetation cults underlie much of mythology.
Frazer's influence on literature was enormous — Eliot's The Waste Land, Joyce's Ulysses, much of modernist mythopoetics drew from The Golden Bough. His influence on anthropology was largely negative: armchair speculation, decontextualised quotation, evolutionary assumptions, all became targets of the next generation.
Émile Durkheim in The Elementary Forms of Religious Life (1912) studied Australian Aboriginal totemism as the simplest religious form and concluded that what religion fundamentally worships is society itself. Religion is the symbolic representation of collective life. The argument is reductive but the field's most enduring sociological intervention.
Rudolf Otto (1869-1937), German Lutheran theologian, published Das Heilige (1917, English: The Idea of the Holy, 1923) — one of the most influential single books in the field's history.
Otto argued that religious experience has a distinctive non-rational core: the encounter with the numinous (Otto's coinage, from Latin numen). The numinous is felt as mysterium tremendum et fascinans — a mystery that simultaneously terrifies and attracts. It is not derivable from morality or metaphysics; it is a primary category of consciousness, like colour or sound.
Examples Otto reached for: Moses at the burning bush, Isaiah's vision of the Lord in the Temple, Job in the whirlwind, the Bhagavad Gītā chapter 11 theophany. The phenomenology travels across traditions because, Otto argued, it tracks something real about religious encounter.
The book is theological — Otto thought the numinous reveals something true — but its phenomenological method became method-neutral. Mircea Eliade and the History of Religions school adopted Otto's category of the sacred while bracketing his theological commitments.
Critics have noted that Otto's "numinous" has a distinctly Lutheran-Romantic shape (Schleiermacher's "feeling of absolute dependence" stands behind it) and may not generalise as well as Otto thought.
Mircea Eliade (1907-1986), Romanian historian of religions, became the field's dominant 20th-century figure through his Chicago professorship (1957-1986) and a torrent of books — The Sacred and the Profane (1957), The Myth of the Eternal Return (1949), Patterns in Comparative Religion (1949), Shamanism (1951), A History of Religious Ideas (3 vols., 1976-83).
Eliade's central distinction: sacred and profane. Religious people experience certain spaces, times, and objects as qualitatively different — the sacred breaks into ordinary reality (a hierophany) and reorganises it. Sacred space has a centre (axis mundi); sacred time is repetition of mythic time (illud tempus); sacred ritual reactualises the foundational events.
The vocabulary spread: hierophany, axis mundi, illud tempus, coincidentia oppositorum, eternal return, homo religiosus. Generations of religious-studies students absorbed it.
The critiques are serious. Eliade universalised modern Romanian, Indian, and shamanic religious sensibilities into "the religious." His evidence was selective; his sources sometimes thin. His Romanian biography included pre-war involvement with the fascist Iron Guard, which he never adequately addressed. His successors (Jonathan Z. Smith especially) have demonstrated that many Eliadean "universals" are constructs, not findings.
Still, the framework — religion as a way of organising space, time, and value around the qualitatively different — remains pedagogically powerful and broadly true.
Ninian Smart (1927-2001), Scottish philosopher of religion at Lancaster and Santa Barbara, founded undergraduate religious-studies departments on both sides of the Atlantic and produced a teaching framework still in heavy use.
Smart's seven (later eight) dimensions of religion, from Worldviews (1983) and Dimensions of the Sacred (1996):
1. Doctrinal/philosophical — formal teachings, theology.
2. Mythic/narrative — stories that organise worldview.
3. Ethical/legal — codes of conduct.
4. Ritual/practical — what practitioners do.
5. Experiential/emotional — what practitioners feel.
6. Social/institutional — communal organisation.
7. Material — buildings, art, objects.
8. Political — relations to power (added later).
Smart's pedagogy: any religion can be analysed across all dimensions; differences between traditions show up as differences in emphasis. Theravāda Buddhism is doctrine-heavy and ritual-light; Shintō is ritual-heavy and doctrine-light. The dimensions don't reduce to each other.
Smart also coined worldview analysis — extending the comparative method to non-religious worldviews (Marxism, secular humanism, scientism), refusing the privileging of "religion" as a separate category.
One distinctive method of the field: the phenomenology of religion. The label, borrowed from Husserlian philosophy, names a descriptive approach — bracket the question of religious truth, describe what religious phenomena look like from the inside, find typologies that hold across traditions.
Major figures: Gerardus van der Leeuw (Religion in Essence and Manifestation, 1933) — the first systematic phenomenology, organising religious phenomena into 100+ types. Friedrich Heiler on prayer. Joachim Wach on religious experience. Mircea Eliade as practitioner-in-chief.
The method's tools: typology (sacrifice, prayer, pilgrimage, initiation appear as recurrent types); comparison (the same type takes characteristic forms across traditions); empathy (einfühlung — the scholar tries to grasp the phenomenon from the practitioner's point of view); epoché (suspension of judgement on truth-claims).
The critiques: phenomenology's "essences" tend to be the scholar's prejudices universalised; the method imports a particular (often Christian-Protestant) sense of what religion is and finds it everywhere; the bracketing of truth is itself a theological move.
The phenomenological strain has been largely displaced in the academy by historical, anthropological, and critical-theory approaches — but its tools (typology, comparison, careful description) remain in use.
William James (1842-1910), Harvard psychologist-philosopher, delivered the Gifford Lectures in Edinburgh in 1901-02, published as The Varieties of Religious Experience (1902) — the field's most enduring single book.
James bracketed institutions and doctrines and focused on personal religious experience. His sources were largely first-person accounts — conversion narratives, mystics, the "sick souls" and the "healthy-minded," cases of saintliness. He treated religion as primarily a phenomenon of individual consciousness, with churches and theologies as secondary elaborations.
Key concepts: the once-born versus the twice-born (the religiously content versus those who pass through crisis to faith); healthy-mindedness versus the sick soul; the mystical experience as having four marks (ineffability, noetic quality, transiency, passivity); the conversion as a sudden reorganisation of the self.
James's pragmatism is the philosophical frame: religious beliefs are evaluated by their fruits — what they enable in the life of the believer — not by their metaphysical truth. The argument made room for religion in a scientific age without requiring its supernatural commitments to be defended.
The book's influence on subsequent comparative study, on the psychology of religion, on the modern category of "spirituality" as distinguishable from "religion" — all enormous.
Max Weber (1864-1920) is to comparative religion's sociological wing what Eliade is to the phenomenological. The Protestant Ethic and the Spirit of Capitalism (1904-05) is the most-cited example: Calvinist anxiety about predestination, channelled into worldly vocation, helped produce the disciplined labour and reinvestment that capitalism required.
The argument is contested in details, but the comparative project Weber launched was vast. His Economic Ethics of the World Religions series (1915-19, on Confucianism, Hinduism, Ancient Judaism, with planned but unwritten volumes on Islam and early Christianity) compared how different religious orientations shape (and are shaped by) economic action.
Weber's tools: ideal types (heuristic abstractions like "the prophet," "the priest," "the bureaucrat" used to organise comparison); theodicy as the engine of religious development (every religion has to explain why the good suffer); routinisation of charisma (how the original prophetic energy gets institutionalised).
The Weberian programme is the foundation of contemporary sociology of religion. Robert Bellah, Peter Berger, José Casanova, Talal Asad — all are arguing in conversation with Weber.
The standard inventory: Hinduism, Buddhism, Judaism, Christianity, Islam — and usually Sikhism, Jainism, Zoroastrianism, Daoism, Confucianism, Shintō, Bahá'í. These are taught as a closed list in introductory courses, in textbooks, in the rotating chapel schedules of universities and the religious-affiliation boxes on government forms.
The list looks natural. It is not. Most of its members were not understood as instances of one shared category before the 19th century. "Buddhism" as the name of a single religion was coined in English around 1801; "Hinduism" around 1816 (the -ism ending borrowed from Christian usage); "Confucianism" by Jesuit missionaries earlier, but stabilised in the 19th century. Before these terms existed, what we now call religions were typically named after their adherents, their region, or their texts.
The framework solidified in the late 19th and early 20th centuries through several forces: Müller's Sacred Books of the East giving each "religion" a comparable scriptural base; the Chicago World's Parliament of Religions (1893) staging a representational tableau; colonial governance requiring religious classifications for census and legal purposes; the academic discipline organising itself by these units.
The framework is useful and pedagogically tractable. It is also a historically specific construction, not a discovery.
Tomoko Masuzawa, in The Invention of World Religions (2005), traced the genealogy of the "world religions" pluralism in 19th-century European scholarship and argued that the framework, far from being a generous post-colonial inclusion, was the mechanism by which European Christianity preserved its supremacy under altered terms.
The argument: as overt European Christian universalism became untenable in the late 19th century (post-Darwin, post-historical-criticism, post-colonial-encounter), the "world religions" pluralism replaced it — but with European/Christian assumptions baked in. What counts as a "religion" (a textual tradition with founder, doctrine, ethics, worship) is a Christian template. Hinduism, Buddhism, Confucianism, Islam — each was reshaped in scholarly description to fit. Traditions that didn't fit (much of indigenous, ancestral, ritualist practice) were left out or demoted to "primitive religion."
The result: a pluralist-looking framework that smuggles in particular (Protestant-textual) assumptions about what religion is, while presenting itself as neutral.
Masuzawa's book joined a wider critical literature — Talal Asad's Genealogies of Religion (1993), Russell McCutcheon's Manufacturing Religion (1997), Daniel Dubuisson's The Western Construction of Religion (1998), Richard King's Orientalism and Religion (1999) — challenging the field's foundational categories.
Jonathan Z. Smith (1938-2017), University of Chicago, was the field's most acute internal critic. His essays — Map Is Not Territory (1978), Imagining Religion (1982), To Take Place (1987), Drudgery Divine (1990), Relating Religion (2004) — punctured Eliadean universalism while preserving the comparative project.
Smith's signature claims:
"Religion is solely the creation of the scholar's study." The famous opening of Imagining Religion. Religion as an analytical category is a product of academic work, not an object found in the world. The job of the scholar is to be self-conscious about that.
Comparison is artificial and that is fine. What scholars compare is not "naturally" comparable; they make it so by choosing their categories. The question is whether the comparison illuminates. Bad comparisons assume similarity and ignore difference; good comparisons hold both in tension.
Difference is the productive site. What matters is not what religions share but where they diverge — and what each divergence implies about the choices a tradition makes within shared problem-spaces.
Smith's relentless self-reflexivity reshaped the field's methodological self-understanding. He is the comparativist's comparativist — careful, ironic, allergic to grand systems.
Talal Asad, anthropologist (CUNY Graduate Center), in Genealogies of Religion (1993) and Formations of the Secular (2003), argued that "religion" as a transhistorical, transcultural category is itself a product of specific Western (especially post-Reformation Christian) history.
The argument's force: medieval Christianity did not have "religion" in the modern sense; religio meant something more like "monastic discipline" or "binding obligation." The privatised, belief-centered, institutionally-distinguishable thing called "religion" emerged through the wars of religion, the rise of the secular state, the Reformation's emphasis on inward faith, and the Enlightenment's separation of church from state.
When this historically specific concept gets exported as a universal category for studying other cultures, it distorts. Islam, in particular — Asad's primary case — does not fit the Protestant-private-belief template; islām is integrated practice, law, and community, not a separable interior commitment.
Asad's complementary argument about secularism: "the secular" is not the absence of religion but a specific configuration that makes possible (and requires) a particular conception of religion. The two co-emerged.
The implication for comparative religion: take seriously that the discipline's central category is local in origin and may be misshapen for what it is asked to measure.
Clifford Geertz (1926-2006), anthropologist of Java, Bali, and Morocco, gave the field its most-quoted definition: religion is "a system of symbols which acts to establish powerful, pervasive, and long-lasting moods and motivations in men by formulating conceptions of a general order of existence and clothing these conceptions with such an aura of factuality that the moods and motivations seem uniquely realistic" (Religion as a Cultural System, 1966).
The definition is functional (what religion does) and symbolic (how it does it). Religion is a meaning-system, encoded in symbols, internalised through ritual, that orients its participants toward the world.
Geertz's larger contribution was methodological: thick description. The ethnographer should not just describe behaviour but the layered meanings practitioners attach to it. A wink is not a wink: it is a wink-as-conspiracy, a wink-as-parody, a wink-as-rehearsal of a wink — and only the embedded interpretation reaches what is happening.
Applied to religion, thick description means studying particular practices in particular places with full attention to local meaning, before generalising. Geertz's Islam Observed (1968) compared Moroccan and Indonesian Islam not by listing common doctrines but by tracing how different cultural configurations took up the same scriptural inheritance and produced quite different lived religions.
From the 1990s, a different programme: the cognitive science of religion. Rather than seeking the meaning or function of religious beliefs, this approach asks why human minds find certain religious ideas memorable, intuitive, and transmissible.
Key figures: Pascal Boyer (Religion Explained, 2001), Scott Atran (In Gods We Trust, 2002), Justin Barrett (Why Would Anyone Believe in God?, 2004), Harvey Whitehouse (Modes of Religiosity, 2004), Ara Norenzayan (Big Gods, 2013).
The programme's central claims: religious concepts are minimally counter-intuitive — they violate ontological expectations just enough to be memorable (a tree that listens; a person who is invisible) without becoming incoherent. Agency-detection is hyperactive in human cognition — we evolved to over-attribute agency, which biases us toward seeing intentional beings everywhere. Ritual works through specific cognitive mechanisms — repetitive, embodied actions that bypass propositional belief.
The cognitive turn reframes religion as a natural product of how human minds work in any cultural context — explaining recurrence without invoking either revelation or specific Western universals.
Its critics note that "explaining" religion at this level may not say much about what religions actually mean to practitioners. The cognitive and the hermeneutic do not exclude each other; both are needed.
Joachim Wach (1898-1955), Eliade's predecessor at Chicago, in Sociology of Religion (1944) and Types of Religious Experience (1951) developed Weberian typology with phenomenological texture. The natural communities of family, kin, and locality acquire religious dimensions; specifically religious communities (sects, churches, mystical brotherhoods) emerge with distinctive structures.
Robert Bellah (1927-2013), Berkeley sociologist, produced two major comparative works. Tokugawa Religion (1957) applied Weberian analysis to Japan; the essay Civil Religion in America (1967) named a phenomenon — the quasi-religious public-political symbolism of American national life — that has been studied ever since.
Bellah's late Religion in Human Evolution (2011) is the field's most ambitious recent synthesis: religion traced from animal play through tribal, archaic, and axial forms, drawing on cognitive science, evolutionary theory, and history. Bellah took seriously the Axial Age hypothesis — the claim, first developed by Karl Jaspers (1949), that around 800-200 BCE multiple civilisations independently developed reflective philosophical-religious traditions (Confucius and Lao Tzu in China; the Buddha and the Upaniṣads in India; the Hebrew prophets; the Greek philosophers) — and asked what cognitive and social conditions made the parallel possible.
What comparative religion looks like in 2026:
History. Most departmental hires are historians of specific traditions: a Buddhologist, an Islamicist, a scholar of Hebrew Bible. Comparative work happens at the seams.
Anthropology / ethnography. Lived-religion approaches — what people actually do, how religion appears in everyday life — have largely displaced text-and-doctrine focus. Robert Orsi's Between Heaven and Earth (2005), Saba Mahmood's Politics of Piety (2005).
Critical theory. Postcolonial, feminist, queer, race-critical analyses of religious traditions and of the discipline itself.
Sociology of religion. Survey research, congregational studies, secularisation theory and its critics. Rodney Stark, Christian Smith, Grace Davie, José Casanova, Robert Putnam.
Cognitive science of religion. Boyer, Atran, Whitehouse — described above.
Material religion. Religion as object, body, sense, place. The journal Material Religion (founded 2005). Sally Promey's work on visual religion.
Departments that called themselves History of Religions in 1980 are now mostly called Religious Studies or Religion; the methodological pluralism has expanded; the universalist phenomenological grand-narrative has receded.
A perennial methodological question. Should the scholar of a religion be a practitioner, or a non-practitioner, or does it not matter? What can each see that the other cannot?
The outsider claim: critical distance enables analysis. The believer cannot bracket her commitments; the non-believer can describe what is happening without confessional interest. The naturalist study of religion requires methodological atheism (or at least methodological agnosticism).
The insider claim: religion is meaningful from inside; the practitioner has access to dimensions the outsider misses. The phenomenology of prayer is unavailable to the non-prayer. Ethnographic empathy has limits.
The pragmatic position (Russell McCutcheon, Bruce Lincoln, others): the scholar's job is critical-historical-anthropological description, not theological insider-discourse. The discipline is a public, secular, comparative inquiry. Practitioners are sources, not colleagues qua practitioners.
The complicating position (Tyler Roberts, Thomas Tweed, others): the strict insider/outsider distinction is itself constructed; many scholars are partial-practitioners, or were once, or work on traditions adjacent to their own. The relevant skill is reflexivity about position, not adherence to one ideal-type role.
In practice, departments of religion include both: scholars who are professed members of the traditions they study and those who are not. The discipline's collective work has to be readable across that line.
One question the discipline circles without settling: what should we make of the plurality? If multiple traditions claim ultimate truth and disagree, what does the comparative scholar's bracketing imply for the believer?
John Hick (1922-2012) developed the most influential pluralist theology. An Interpretation of Religion (1989) argued that the major traditions are differently culturally-conditioned responses to the same ultimate Real, which transcends all descriptions. The Real-in-itself is unknowable; the Real-as-experienced takes the personal forms of theistic traditions and the impersonal forms of non-theistic ones.
Critics (Gavin D'Costa, Paul Griffiths, Mark Heim): Hick's pluralism is itself a position, not a neutral framing — and the position's specifics (a Kantian noumenal Real underlying all phenomenal religion) are themselves a Western philosophical construction.
Mark Heim's Salvations (1995) proposed instead a "more-than-one" pluralism: different traditions aim at and achieve different religious ends, not different versions of the same end. Buddhist nirvāṇa and Christian theosis are not two names for one thing.
Comparative theology (Francis X. Clooney) takes a different path: the theologian works as Christian (or whatever) but reads deeply in another tradition, allowing it to reshape one's own theological understanding without erasing difference.
The "world religions" framework groups traditions thousands of years old. The same period that solidified the framework also produced new religions in unprecedented numbers — and the field has had to reckon with them.
The 19th century: Mormonism (Joseph Smith, 1830), Bahá'í (Bahá'u'lláh, 1863), Theosophy (Blavatsky, 1875), Christian Science (Mary Baker Eddy, 1879). The early 20th century: Pentecostalism (Azusa Street, 1906), Cao Đài (Vietnam, 1926), Rastafari (Jamaica, 1930s). Postwar: Soka Gakkai's global expansion, Scientology (L. Ron Hubbard, 1954), the Unification Church, ISKCON (Hare Krishnas, 1966), Falun Gong (China, 1992).
The discipline's vocabulary moved from "cults" (loaded, journalistic) to new religious movements (NRMs — neutral, sociological). Eileen Barker founded INFORM (1988) for objective study of NRMs. Massimo Introvigne's CESNUR. The journal Nova Religio.
NRMs raise specific questions: how does a religion become "established"? What distinguishes a movement from a sect from a cult from a religion proper? How should the state treat them? What happens to second-generation members of a founder's tradition? The answers feed back into how the older religions are understood — they too were once new.
The most consequential methodological shift of the past 30 years. Move attention away from texts, doctrines, and official institutions toward what religion looks like in the daily lives of practitioners.
Robert Orsi's The Madonna of 115th Street (1985) studied the annual feast of the Madonna among Italian immigrants in East Harlem — what the saint did for women's lives, the family-religious negotiations, the materiality of votive candles and processions and food. Between Heaven and Earth (2005) generalised the method.
David Hall's Lived Religion in America (1997) collected the early manifesto of the approach. Saba Mahmood's Politics of Piety (2005) on women's piety movements in Cairo, taking seriously the agency of religious women in tradition-conserving rather than tradition-rejecting ways.
What lived-religion scholarship reveals: religion is not primarily what theologians say it is. It is improvised, embodied, materially mediated, often theologically inconsistent. Folk Catholicism, Pentecostal possession, evangelical home decor, prayer-cloth ministries, religious tattooing, devotional Instagram — all become legitimate objects of study.
The risk: the loss of analytical traction if every individual practice is its own thing. The corrective: comparison still works at the level of patterns of practice, even when individual instances are particular.
The mid-20th-century social-scientific consensus held that secularisation was the trajectory of modernity: as societies industrialised, urbanised, and educated, religion would recede from public life and lose adherents. Bryan Wilson, Steve Bruce, Karel Dobbelaere developed the thesis.
The empirical record forced revision. The United States remained highly religious. Pentecostalism expanded explosively across the Global South. Islam grew demographically and politically. Even in Western Europe (the secularisation thesis's strongest case), the picture was more complicated — religion as institution declined; religion as personal "spirituality" (or as ethnically-identified residual practice) persisted.
José Casanova's Public Religions in the Modern World (1994) argued that secularisation has multiple dimensions — institutional differentiation, religious decline, religious privatisation — and that they don't always go together. Modernity does separate religion from the state; it does not necessarily make people non-religious.
Charles Taylor's A Secular Age (2007) — an 800-page philosophical history — argued that what changed is not the prevalence of religion but the conditions of belief. In 1500, Christian belief was a default; in 2000, it is one option among many. The "secular age" is the age of contested belief, not the age of unbelief.
Peter Berger, who had been a leading secularisation theorist, publicly recanted in the 1990s and reframed modernity as the age of pluralism, not secularisation.
Comparative religion has always had a strong popular-pedagogical wing. Huston Smith's The World's Religions (1958, originally The Religions of Man) sold over three million copies and remains the most-assigned introductory textbook. Smith — Methodist, MIT and Berkeley professor, charismatic — presented each tradition through its strongest claims rather than its weakest. The book is sympathetic, devotional, frankly partisan toward perennialism (the view that all great traditions point to one truth).
Karen Armstrong, former Catholic nun turned independent scholar, has written widely-read narrative histories: A History of God (1993), The Battle for God (2000), The Case for God (2009). Her work emphasises the practical-mystical core common across the major traditions.
Diana Eck at Harvard founded the Pluralism Project (1991) documenting the actual diversity of religion in America.
Bill Moyers's The Power of Myth conversations with Joseph Campbell (PBS, 1988) brought a popular-Jungian comparative mythology to enormous audiences.
The popular tradition's strengths: accessibility, narrative power, civic value. Its weaknesses: a tendency toward perennialism that flattens difference, and an assumption that the "essence" of each tradition is its most contemplative and ethical strand (rather than its everyday or violent or doctrinal forms).
The post-1979 period — Iranian Revolution, Sikh militancy in Punjab, the rise of Hindutva, the Lebanese civil war, the Bosnian war, 9/11, the Buddhist-Muslim violence in Sri Lanka and Myanmar — forced the discipline to address violence not as an aberration of religion but as one of its possible registers.
Mark Juergensmeyer's Terror in the Mind of God (2000) compared religious-violent movements across traditions and identified shared features: cosmic war framing, performative violence as ritual, opposition to a globalising secular order.
R. Scott Appleby's The Ambivalence of the Sacred (2000) argued that the same religious resources that produce violence also produce peacemaking — the question is which strand is mobilised.
William Cavanaugh's The Myth of Religious Violence (2009) pushed back: the framing of "religious violence" as a distinctive category of violence is itself a secular-state ideological move, used to legitimate state violence by contrast.
The discipline's general view by 2025: religion does not cause violence in any simple sense, but religious frames are powerfully available for violence-justification, and traditions vary in how they regulate that availability. Generic "religion is violent" / "religion is peaceful" claims do badly against the comparative evidence.
One short course, one classic-text introduction, and one sympathetic public theologian.
Institute for Continued Learning · Comparative Religion lecture
Then two further watch-links worth your time:
— Huston Smith on The World's Religions (Hinduism). The grand old man of perennialist comparative religion. Imperfect, but the gold-standard pedagogy.
— Karen Armstrong on God. The most-read living comparative writer. A working summary of the comparative-mystical case.
Read alongside: Huston Smith, The World's Religions (the textbook). Tomoko Masuzawa, The Invention of World Religions (the critique). Jonathan Z. Smith, Imagining Religion (the methodologist). Charles Taylor, A Secular Age (the philosophical history). Robert Orsi, Between Heaven and Earth (the lived-religion turn).
Three claims for the discipline.
It is the only place where the world's religious traditions are studied together, as a comparative subject, by people who are not committed to defending any of them. Whatever its colonial origins, the field has produced an enormous archive of careful description of human religious life — what people across cultures have actually believed, done, fought about, lived through. There is no other discipline that does this.
It is methodologically sophisticated about its own categories. Few fields have spent as much energy auditing their foundational concepts. The result is a discipline self-aware about its construction — a useful thing for any field to be.
It informs how citizens of plural societies make sense of their neighbours. Most people will live their lives among practitioners of multiple religions. The capacity to understand, fairly, what those neighbours are doing is a civic skill. Comparative religion is the discipline that takes that skill as its core curriculum.
Four directions.
Decolonisation in earnest. The post-Masuzawa critique has been absorbed at the level of theory. The next phase is curricular and institutional: rebuilding introductory courses that don't reproduce the "world religions" closed list as natural; bringing indigenous and African traditions into central rather than supplementary roles; addressing the field's predominantly white-Western scholarly demographic.
Climate religion. Religious traditions have become major actors in environmental politics — Pope Francis's Laudato Si' (2015), engaged Buddhism's climate work, indigenous water-protector movements, evangelical climate-denial. The intersection is a growing research field.
The "nones" question. The fastest-growing religious-affiliation category in many Western countries is "none." The category is heterogeneous (atheist, indifferent, "spiritual but not religious"). Understanding what religious life looks like outside institutions — and whether it is religious at all — is the field's most pressing sociological question.
Post-secular politics. The assumption of religion-as-private-belief is straining. Religious actors operate in public — and the discipline's old categories may need rebuilding to keep pace.
Comparative Religion — Volume XV, Deck 5 of The Deck Catalog. Set in Iowan Old Style on dark slate. Gold and rose accents.
Thirty leaves on the discipline that tries to study religions from outside any one of them — and on the long argument over whether such an outside is possible.
↑ Vol. XV · Rel. · Deck 5