The monkey trial wasn't really about a monkey. It wasn't even really about John Scopes, the young teacher who agreed to be the test case. It was about something bigger, messier, and far more revealing: a country trying to decide what kind of modern it wanted to be.
People argue about this. Here's where I land on it.
In 1925, Dayton, Tennessee became the stage for a collision that had been building for decades. On the flip side, on one side: William Jennings Bryan, three-time presidential candidate, defender of the common man, and a believer who thought evolution poisoned the moral fabric of society. That said, on the other: Clarence Darrow, the most famous defense attorney in America, an agnostic who saw religious fundamentalism as a threat to intellectual freedom. The press descended. Still, the nation watched. And underneath the spectacle, a quieter question pulsed: *Can you be a modern person and still believe?
That question didn't start in Dayton. And it didn't end there either.
What Was Happening Between Science and Religion in the 1920s
The 1920s weren't just flappers and jazz. Because of that, Relativity rewrote the universe. Practically speaking, Quantum mechanics broke the clockwork. Genetics began cracking the code of inheritance. Because of that, they were a decade where the ground shifted under everyone's feet — scientifically, culturally, theologically. Psychology (Freud, Jung, the rising behaviorists) suggested the self wasn't what we thought it was. And biblical criticism — the historical, textual study of scripture — had been trickling down from German universities into American seminaries for fifty years.
Mainline Protestant denominations — Methodists, Presbyterians, Baptists, Congregationalists, Episcopalians — were fracturing. The fundamentalist-modernist controversy wasn't a sideshow. It was the main event in church after church, seminary after seminary, denominational assembly after assembly Still holds up..
The modernist impulse
Modernists (they called themselves "liberal Protestants" or just "thinking Christians") argued that faith had to engage modern knowledge. They read the Bible historically, not literally — inspired, yes, but written by humans in specific times, carrying cultural assumptions. They didn't see evolution as a threat; they saw it as how God worked. They embraced the social gospel: Christianity as a force for labor reform, public health, racial justice (sometimes), and international peace.
Harry Emerson Fosdick's 1922 sermon "Shall the Fundamentalists Win?" crystallized the modernist case. Preached at First Presbyterian Church in New York — funded by John D. On the flip side, rockefeller — it argued for intellectual tolerance. The fundamentalists did win that particular battle (Fosdick left the Presbyterian pulpit), but they lost the cultural war. Rockefeller later funded Riverside Church, a modernist cathedral on the Hudson. Symbolism matters.
The fundamentalist reaction
Fundamentalists — the term comes from The Fundamentals, a twelve-volume set of essays published 1910–1915 — drew a line. Five non-negotiables: biblical inerrancy, the virgin birth, substitutionary atonement, Christ's bodily resurrection, and the historical reality of miracles. Evolution denied the first and undermined the rest. Higher criticism (they called it "destructive criticism") turned scripture into mere literature.
No fluff here — just what actually works.
They weren't all uneducated. In practice, j. Here's the thing — gresham Machen, Princeton theologian and later founder of Westminster Seminary, held doctorates from Germany. That said, he wrote Christianity and Liberalism (1923), arguing that modernism wasn't Christianity at all — it was a different religion wearing Christian vocabulary. He had a point, structurally. But the movement's public face became Bryan: populist, anti-intellectual, convinced that evolution led to social Darwinism, eugenics, and the brutalization of the weak Worth keeping that in mind. That's the whole idea..
He wasn't wrong about eugenics. On the flip side, the 1927 Buck v. Bryan saw the connection. Think about it: bell decision (Oliver Wendell Holmes: "Three generations of imbeciles are enough") came after Scopes. The leading American biologists of the 1920s — many of them — supported forced sterilization laws. Modernists often didn't.
Why This Conflict Mattered — And Still Does
The 1920s didn't just produce a famous trial. They produced the template for how Americans argue about science and religion today.
The culture war template
Before the 1920s, "science vs. Practically speaking, religion" wasn't a fixed polarity in American public life. Most scientists were Christians. Most clergy accepted an old earth. The warfare thesis — the idea that science and religion are inherently, permanently at war — was popularized in this decade by books like John William Draper's History of the Conflict Between Religion and Science (1874, but widely reprinted) and Andrew Dickson White's A History of the Warfare of Science with Theology in Christendom (1896). The 1920s made it felt Surprisingly effective..
Scopes was a media event — the first trial broadcast on radio. Which means h. In real terms, l. Mencken's sneering coverage from Baltimore shaped how urban America saw rural faith. Think about it: the fundamentalists won legally (Scopes was convicted, fine $100, overturned on a technicality) but lost the narrative. Inherit the Wind (1955 play, 1960 film) cemented the caricature: ignorant yokels vs. brave rationalists.
That caricature still distorts everything. It makes secular people dismiss religious believers as anti-science. Think about it: it makes religious people dismiss scientific consensus as ideological. Both sides inherit a script they didn't write.
The lost middle
The tragedy of the 1920s is what got crushed in the middle. Theistic evolution — the view that God creates through evolutionary processes — had been the dominant position among educated American Protestants since the 1870s. That said, asa Gray, Darwin's chief American correspondent, was a devout Presbyterian. So was James Dwight Dana, the leading geologist of his generation. In 1925, the majority of American scientists who expressed a religious preference were Christians. The majority of clergy in mainline denominations accepted evolution Most people skip this — try not to..
But the loudest voices polarized. The fundamentalists, in their defensiveness, made a young earth a test of orthodoxy — something no major Christian tradition had ever required before the 20th century. Here's the thing — the modernists, in their eagerness to accommodate, sometimes jettisoned the supernatural entirely. (Augustine, Aquinas, Calvin, Wesley — none read Genesis as a scientific chronology.
The middle didn't disappear. That said, it went quiet. It's still quiet.
How the Conflict Played Out — Institution by Institution
The 1920s battle wasn't fought in one courtroom. It was fought in denominations, seminaries, school boards, and publishing houses.
The Northern Baptist Convention
1922: Fosdick's sermon. 1923: The Fundamentalist Fellowship forms inside the convention. That said, 1924: They try to force a confession of faith on missionaries. Day to day, 1925: They lose the vote but claim the moral high ground. 1932: The conservatives split, forming the General Association of Regular Baptist Churches. The pattern repeats across denominations — pressure, defeat, schism Small thing, real impact..
Short version: it depends. Long version — keep reading.
Princeton Theological Seminary
The fortress of Reformed orthodoxy. Machen, Vos, Warfield (died 1921), Wilson — giants of scholarship and conf
essional. When the fundamentalist-modernist controversy erupted, Princeton became the epicenter of the conservative counteroffensive. Day to day, machen's 1923 book Christianity and Liberalism argued that modernism was not Christianity at all but a rival religion — a secular philosophy dressed in theological language. He was tried by his own denomination, the Presbyterian Church in the USA, and suspended in 1924. He refused to recant. In 1929, he founded Westminster Theological Seminary as a confessional fortress — a place where the Westminster Confession of Faith would be taught without apology Which is the point..
But the story is more complicated than a simple siege narrative. So princeton had already fractured before the controversy peaked. Charles Erdman, a professor of practical theology, was a moderate who supported the ordination of evolutionary creationists. The board of directors, under pressure from the denomination's northern leadership, forced Erdman's appointment over Machen's objections. Think about it: machen saw this as proof that the institution had been captured. Erdman saw Machen as a rigidist destroying fellowship. But both were Princeton men. Both believed they were defending the faith Less friction, more output..
The denomination split in 1936. On top of that, machen's Orthodox Presbyterian Church was small — never more than a few thousand members — but its intellectual influence was outsized. It produced a generation of conservative theologians and, eventually, the Christian educational movement that included institutions like Covenant College and Reformed Theological Seminary. The schism also left the mainline Presbyterian Church (USA) increasingly liberal, setting the stage for the culture-war battles of the late 20th century.
The Publishing Wars
If Princeton was the theological fortress, the publishing houses were the front lines. That said, on the liberal side, Charles Clayton Morrison's The Christian Century (Chicago) became the leading voice of the Religious Left, championing social justice, evolution, and a non-literal reading of scripture. The Presbyterian and Reformed Publishing Company, founded by Machen, became the institutional voice of conservative scholarship. The conflict played out in book catalogs and journal editorial boards. Morrison's magazine reached a circulation of over 30,000 by the 1920s — enormous for a religious publication — and shaped the consensus among mainline Protestant intellectuals Less friction, more output..
Meanwhile, The Fundamentals (1910–1915), a twelve-volume series funded by two California millionaires, Lyman and Milton Stewart, had already distributed 3 million free copies to clergy and missionaries worldwide. The essays in The Fundamentals ranged from orthodox Presbyterianism to dispensational premillennialism. The word "fundamentalist" was coined in 1920 by Curtis Lee Laws, a Northern Baptist editor, to describe those who would "stand against modernism at any cost.They were not a unified manifesto but a loose coalition of conservatives united against modernism. " It was originally a badge of honor.
The School Boards and Textbooks
The Scopes Trial was the most dramatic battle, but the real trenches were in school boards across the South and Midwest. Also, oklahoma, Tennessee, Arkansas, Mississippi, and Texas all passed or attempted anti-evolution legislation in the 1920s. The legislation was rarely enforced vigorously — Tennessee's law wasn't even tested until 1925 — but its presence in statute books sent a message: this state is not neutral on the origins question Simple as that..
Textbook publishers felt the pressure. Even so, when the Tennessee law passed, publishers of biology textbooks pulled their books from the state market rather than face litigation. Some rewrote chapters on evolution to be vaguer, replacing "evolution" with "development" or "transformation." Others simply stopped selling in Southern states. The result was a generation of students in the Bible Belt who received a diluted science education — not because teachers were ignorant, but because publishers were risk-averse.
This pattern would repeat in different forms for decades: the Balanced Treatment Acts of the 1970s (requiring "creation science" alongside evolution), the Kansas State Board of Education battles of 1999, the Dover, Pennsylvania trial of 2005. Each episode follows the same arc: legislative pressure, publisher retreat, courtroom challenge, and a temporary legal victory for one side followed by a long, slow erosion of the policy.
The Denominational Fault Lines
The fundamentalist-modernist controversy did not stay contained within Presbyterian and Baptist circles. It rippled outward.
In the Methodist Episcopal Church, the Methodist Episcopal Church South had always been more doctrinally conservative than its northern counterpart. The
...split became irreconcilable during the 1920s as northern bishops appointed progressive ministers to southern congregations, triggering mass walkouts and the formation of the Methodist Protestant Church in 1939. Similarly, the Presbyterian Church USA and Presbyterian Church in the USA (the "Old School") divided in 1936 after decades of conflict over theological seminaries and missionary policies.
The Southern Baptist Convention, founded in 1845 specifically to maintain slaveholding autonomy, had always prioritized local church control over denominational oversight. Consider this: this structure proved remarkably adaptable to fundamentalist organizing. By the 1930s, Southern Baptist newspapers like The Baptist Bulletin were publishing anti-evolution articles, and the convention's annual meetings featured increasingly strident sermons against modernism. Unlike Presbyterian or Methodist splits, the Baptist model allowed fundamentalists to work within existing structures while gradually shifting theological and educational priorities through decades of sustained pressure on local boards and seminary trustees.
The Lutheran landscape split along ethnic lines as well as theological ones. That's why german-language churches tended toward liberalism and were less affected by fundamentalist appeals, while English-language congregations embraced the fundamentalist message. This created parallel denominational structures that would eventually merge only after decades of separation.
Perhaps most significantly, the Church of Christ (Campbellite) movement, which had emphasized unity and restoration rather than doctrinal precision, fractured when fundamentalists gained influence in the 1930s and 1940s. The once-broad coalition split into multiple factions: the "Old Guard" churches that maintained progressive stances, and new fundamentalist congregations that separated entirely.
No fluff here — just what actually works.
These denominational realignments reflected a broader cultural transformation. As fundamentalism spread beyond its initial Protestant strongholds, it found fertile ground among immigrant communities seeking religious certainty in an era of rapid social change. Pentecostal and Holiness movements, while distinct in their emphasis on spiritual gifts, shared fundamentalism's suspicion of higher criticism and evolutionary theory. By the 1940s, a generation of ministers trained in fundamentalist-approved institutions was entering pulpits across America, carrying forward assumptions about biblical authority that would shape American Christianity for decades to come It's one of those things that adds up..
