The Last Blasphemer: Abner Kneeland and the Fight for Free Thought

• Introduction
• Chapter 1 The Pulpit of Doubts
• Chapter 2 A Preacher Unbound
• Chapter 3 The Athens of America and Its Orthodoxy
• Chapter 4 The Boston Investigator
• Chapter 5 Heresy in Print
• Chapter 6 The Shadow of the 1782 Act
• Chapter 7 Arrest in the Hub
• Chapter 8 The City vs. Abner Kneeland
• Chapter 9 Arguments of the Common Good
• Chapter 10 A Divided Jury
• Chapter 11 The Orator of Infidelity
• Chapter 12 The Appeal to the Supreme Judicial Court
• Chapter 13 Chief Justice Lemuel Shaw
• Chapter 14 The Defense of Pantheism
• Chapter 15 Faith as a Civic Anchor
• Chapter 16 The Final Verdict
• Chapter 17 Sixty Days in the Leverett Street Jail
• Chapter 18 Martyrs and Radicals
• Chapter 19 The Transcendentalist Defense
• Chapter 20 William Ellery Channing’s Petition
• Chapter 21 The Furnace of Public Opinion
• Chapter 22 Walking Out a Free Man
• Chapter 23 The Exodus to Salubria
• Chapter 24 The Death of American Blasphemy Laws
• Chapter 25 Kneeland’s Living Legacy

On a damp, overcast morning in the late spring of 1838, an elderly man with thinning white hair and the steady, composed gaze of a lifelong preacher was escorted into Boston’s Leverett Street Jail. His crime was not theft, nor treason, nor any assault against his fellow citizens. In the eyes of the Commonwealth of Massachusetts, he had committed an offense far more dangerous to the social fabric: he had spoken his mind on the nature of God, and in doing so, he had dared to disbelieve. His name was Abner Kneeland, and when the heavy iron bolts slammed shut behind him, he entered American history as the last man ever imprisoned for the crime of blasphemy in the United States.

To look upon Boston in the 1830s was to behold a city that proudly proclaimed itself the "Athens of America"—a beacon of high culture, burgeoning industry, and enlightened civic order. Yet beneath its veneer of polished Unitarian liberalism and republican idealism lay an anxious Brahmin establishment terrified of what unfettered democracy might unleash. Kneeland, a former Universalist minister turned radical freethinker, did not merely question traditional theology; he carried his skepticism into the public square. Through his firebrand weekly paper, The Boston Investigator, and in thunderous lectures delivered to packed halls of working-class men and women, he advocated for pantheism, racial equality, labor rights, and universal access to birth control. To the city’s conservative elite, Kneeland was not merely a heretic; he was a social arsonist threatening to pull down the pillars of the moral republic.

The weapon chosen to silence him was Massachusetts’ antiquated Blasphemy Act of 1782, a direct legislative descendant of colonial Puritan statutes that had once mandated death for cursing the Almighty. Across five grueling trials stretching over four years, the Commonwealth marshaled its most formidable legal intellects against the aging editor. The battle culminated before Chief Justice Lemuel Shaw, the undisputed titan of nineteenth-century American jurisprudence. Shaw’s ruling was as chilling as it was calculated: an insistence that the state possessed an inherent right to police the boundaries of conscience in the name of civic peace. The courtroom became an arena where the fundamental promises of the American Revolution were laid bare, contested by those who viewed faith as the indispensable bedrock of civic order and those who believed that freedom of thought must be absolute or it is nothing at all.

Yet the authorities fundamentally miscalculated the power of a martyr. Kneeland’s sixty-day imprisonment sparked a profound intellectual revolt that fractured Massachusetts society. Even devout Christians who abhorred Kneeland’s pantheistic philosophy—most notably the renowned Unitarian divine William Ellery Channing—recoiled at the spectacle of an old man locked in a cell for his opinions. Ralph Waldo Emerson, Theodore Parker, and other emerging voices of American Transcendentalism rallied to Kneeland’s defense, recognizing that if the government could dictate what a citizen might believe about the heavens, no earthly liberty was safe. The resulting petition campaign and blistering public outcry transformed a quiet local prosecution into a national referendum on the meaning of religious freedom and the sacred right to dissent.

The Last Blasphemer recovers this pivotal, forgotten crucible of American liberty. While schoolbooks teach that religious freedom was settled once and for all by the First Amendment in 1791, the reality was far messier: states retained the power to prosecute conscience well into the nineteenth century, and only the courage of dissenters like Kneeland forced the young republic to live up to its founding creed. This is the story of how an unfashionable radical, armed only with a printing press and an unbending conscience, exposed the hypocrisies of his age and forever altered the legal landscape of the nation. It serves not only as a dramatic portrait of antebellum America on the brink of intellectual transformation, but as a timely, urgent reminder that the fight for free thought is never permanently won—it is merely inherited by each generation anew.

The soil of Gardner, Massachusetts, was never meant to yield easy harvests. Sitting high in the hills of Worcester County, sixty miles west of Boston, the town was a patchwork of granite boulders, thin glacial till, and scrubby pine. When Abner Kneeland drew his first breath there on April 7, 1774, the American colonies were hurtling toward open rebellion against King George III. In the Kneeland household, as in almost every farmhouse across the Massachusetts backcountry, two forces governed daily existence with equal severity: the punishing New England climate and the unbending theology of the Puritan fathers.

His father, Timothy Kneeland, was a hardworking carpenter and farmer of Scottish ancestry who could trace his lineage back through the early settlement of the colony. His mother, Martha Wait, came from stalwart pioneer stock that had endured frontier skirmishes, devastating winters, and generations of relentless sabbatarian routine. Young Abner grew up inside a world measured by chore cycles and chapel bells. The farm demanded endless manual labor: hauling fieldstones into endless gray fences, splitting firewood against sub-zero winters, tapping sugar maples in the muddy spring thaw, and coaxing corn from stingy earth. Yet rigorous as the physical labor was, the psychological labor demanded by the local meetinghouse was heavier still.

Religion in rural Massachusetts in the late eighteenth century was not merely a matter of private Sunday reflection; it was the governing architecture of the universe. The Congregationalism of Kneeland’s youth remained thoroughly steeped in the Calvinism codified by the Westminster Confession. God was an absolute sovereign, infinite and inscrutable, whose majesty was matched only by the utter, inherited depravity of humankind. From the pulpit, ministers laid bare the terrifying mechanics of predestination. Before the foundation of the world, God had chosen a small remnant—the elect—for eternal bliss in heaven, entirely through His unmerited grace. The rest of humanity, regardless of their piety, charity, or earnest weeping, were justly condemned to burn forever in hellfire to demonstrate the perfection of divine justice.

For an inquisitive boy with a sharp, literal mind, this system posed agonizing problems. Calvinism did not invite debate; it demanded terrifying introspection. Kneeland later recalled that as a boy, he lay awake beneath the rough eaves of his family’s farmhouse, sweating with terror at the prospect of dying in his sleep. If an unregenerate child died before receiving a supernatural sign of saving grace, his soul tumbled directly into the eternal pit. What made the theology particularly haunting was its moral asymmetry. If an omnipotent God had decreed the fate of every soul before time began, on what grounds could human beings be held morally responsible for failing to believe? Such questions were not welcomed in Gardner. To question God’s decree was to demonstrate the very pride that proved one was damned.

Education offered Abner an escape, or at least a brief respite from the fieldstone and the specter of hell. Like many farm boys of modest means, his schooling was sporadic, confined to the few winter weeks when outdoor labor was suspended. Yet he displayed an intense, almost obsessive hunger for books. Paper was scarce, ink was homemade, and libraries were nonexistent in the hills, but young Kneeland devoured whatever print he could find: almanacs, old tracts, and above all, the King James Bible. He read the scriptures not with passive devotion, but with a forensic thoroughness, committing vast swathes of text to memory and cross-referencing chapters with an innate knack for systematic logic.

Recognizing that he had little natural affection for the plow, his family allowed him to pursue a path open to scholarly young men of his station. By his early twenties, he was teaching school in neighboring towns, earning a meager wage while polishing his own intellect. He attended the nearby Chesterfield Academy in New Hampshire for a time, supplementing his rudimentary schooling with classical grammar, mathematics, and rhetoric. He discovered that he possessed a clear, resonant speaking voice, a dignified carriage, and an unusual capacity to explain difficult concepts to ordinary listeners. These were the raw materials of an antebellum professional, and in eighteenth-century New England, there were really only two professions open to a literate young man without family fortune: medicine or the ministry.

Medicine had its attractions, and Kneeland dabbled in its study, acquiring a lifelong fascination with physiology and herbal remedies. But the spiritual question would not let him go. The terror of damnation that had haunted his childhood continued to gnaw at him. He needed to know where he stood with his Creator. In his early twenties, while living in Chesterfield, he experienced what he initially took to be a genuine religious awakening. Caught up in the earnest fervor of a local revival, he sought peace among the Baptists.

The Baptists of the New England hill country were a dynamic and defiant breed. Unlike the established Congregationalist standing order—whose ministers were supported by compulsory local taxation—Baptists maintained a fierce tradition of dissent, voluntary association, and the strict requirement that church members demonstrate a conscious, adult experience of conversion before being baptized by full immersion. In 1795, at the age of twenty-one, Kneeland submitted to baptism in the cold, rushing waters of a New Hampshire stream. He was formally received into the Baptist communion, thinking that by embracing this rigorous, personal faith he had finally escaped the dark shadow of uncertainty.

For several years, Kneeland poured his energy into this new spiritual home. He married Waitstill Orms, a young woman from a respectable local family, settled down, and resumed teaching and farming while serving as a licensed lay preacher. The Baptists welcomed his rhetorical polish and his encyclopedic grasp of the Bible. He traveled between scattered, rural congregations across southwestern New Hampshire and northern Massachusetts, delivering exhortations to small gatherings of farmers, mechanics, and frontier wives. He had found a voice, an audience, and a community.

Yet the peace did not last. Kneeland was cursed—or blessed—with an intellect that refused to stop thinking once it reached the boundaries of authorized doctrine. As he stood in drafty schoolhouses and barn-like meetinghouses preaching the Baptist gospel, the old theological contradictions surged back to the surface. He was preaching that Christ had died to save sinners, but Baptist orthodoxy held that Christ’s atonement was particular, intended only for the elect. If salvation was limited to a preordained few, why command all men to repent? Why warn sinners to flee from the wrath to come if their destruction was already etched in the bedrock of eternity?

Kneeland began to re-examine the Greek New Testament. Armed with lexicons, dictionaries, and a pencil, he spent late nights by candlelight scrutinizing every word and tense. What he found in the original texts startled him. The English words translated as "hell," "damnation," and "everlasting" were renderings of Greek terms—Hades, Gehenna, Tartarus, and aionios—that carried far more nuanced, fluid meanings. Aionios, in particular, meant "age-lasting" or pertaining to an epoch, not necessarily infinite duration without end. If biblical punishment was age-long rather than eternal, it served a disciplinary, corrective purpose rather than an act of vindictive, unending torment.

As these thoughts fermented in Kneeland’s mind, a new theological movement was tearing through the New England countryside, leaving outraged orthodox ministers in its wake: Universalism.

Propagated in America by charismatic itinerants like John Murray and Elhanan Winchester, Universalism directly assaulted the cornerstone of traditional Puritanism. The Universalists insisted that God was not an omnipotent tyrant who derived pleasure from the eternal screaming of His creatures, but a loving Father whose purpose was the ultimate restoration and salvation of all human souls through Christ. In a republic that had just thrown off earthly kings and declared the natural equality of human beings, the idea that God was a universal emancipator possessed a fierce, intuitive appeal. To orthodox Calvinists, however, Universalism was nothing short of a satanic poison. If hell did not exist, they argued, morality would collapse, the social order would dissolve into anarchy, and men would murder and sin with complete impunity.

Kneeland resisted the pull of Universalism at first. He had been taught that its teachers were emissaries of the devil. But he could not unsee what he had discovered in his biblical studies. In 1801, when a prominent Universalist preacher named Hosea Ballou passed through New Hampshire, Kneeland sought him out. Ballou was a towering figure in American religious history, a largely self-educated philosopher of extraordinary clarity who was systematically dismantling the last vestiges of Calvinism within the Universalist ranks. Ballou did not merely preach that all men would be saved; he preached that God was entirely benevolent and that the traditional doctrine of the Trinity—three co-equal persons in one Godhead—was irrational and unscriptural.

The meetings between the young, troubled Baptist teacher and the brilliant Universalist apostle were transformative. Ballou did not resort to emotional hysterics or appeals to blind faith. He used patient, Socratic logic, opening the scriptures and challenging Kneeland to find a single verse where God’s love was overridden by infinite cruelty. Kneeland parried with the verses he had spent his life memorizing, but one by one, Ballou contextualized them, stripping them of their medieval terrors.

The intellectual wall collapsed. In 1803, Kneeland took the dramatic, painful step of formally breaking with the Baptists. In a close-knit rural society where church membership was the very foundation of social standing and neighborly trust, such a departure was not taken lightly. The Chesterfield Baptist Church convened a council, declared Kneeland guilty of entertaining heretical notions, and formally excommunicated him. To his former brethren, he was a fallen brother walking straight into the jaws of destruction.

Kneeland, however, felt a sense of immense liberation. The God of terror who had haunted his childhood was gone, replaced by a Deity whose love encompassed the whole of creation. He applied for fellowship with the newly organized General Convention of Universalists, and in 1804, at the age of thirty, he was officially ordained as a minister of the gospel of universal salvation.

For the next several years, the Reverend Abner Kneeland was a rising star in the Universalist firmament. He accepted a pastoral call to the town of Langdon, New Hampshire, where he served both as minister and a respected town figure. His sermons were marked by clarity, deep textual learning, and an unyielding commitment to reason. He was not a theatrical, fist-pounding revivalist; he stood before his listeners like a sensible country lawyer arguing a profound case of cosmic equity. His congregation grew, and his standing within the denomination soared. In 1810, the citizens of Langdon went so far as to elect their articulate minister to represent them in the New Hampshire State Legislature, where he served with quiet competence.

Yet beneath the apparent stability of his pastoral career, the old restlessness returned. The problem with using reason to escape an orthodox dogma is that reason does not automatically halt once an agreeable resting place is reached. Kneeland had used the razor of rational analysis to slice away the doctrine of endless torment, then the doctrine of original sin, and then the doctrine of the Trinity. But having accepted that human reason was the final arbiter of truth, why should it stop there?

While living in Langdon, Kneeland threw himself into the study of language, science, and the broader intellectual currents of the Atlantic world. He corresponded with leading thinkers, mastered the mechanics of printing, and began preparing a new edition of the Greek New Testament with parallel English translations, complete with critical footnotes pointing out variant readings and scribal errors. The deeper he dug into the textual history of the scriptures, the more the Bible appeared to him not as a miraculous, verbally inspired oracle dropped from the clouds, but as a deeply human anthology—written by fallible men, compiled through messy political councils, and filled with historical, scientific, and internal contradictions.

Personal tragedies deepened his internal crisis. In 1806, his wife Waitstill died, leaving him with three young children to care for. He remarried, to Lucinda Mason, but she too died just a few years later. The raw reality of disease, loss, and death mocked the neat theological platitudes he was expected to offer from the pulpit. He could assure weeping widows that their loved ones were in a better world, but increasingly, a cold voice inside his head asked: How do you know?

By 1811, Kneeland’s private doubts had metastasized into a full-blown crisis of faith. He could no longer preach the standard miracles of the Bible with a clean conscience. Did the sun truly stand still for Joshua? Did an iron axe-head float on the water for Elisha? Was Jesus of Nazareth literally born of a virgin without human paternity? To the eighteenth-century Enlightenment minds he was now devouring—philosophers like John Locke, David Hume, and Thomas Paine—miracles were violations of the fixed, unchanging laws of nature. If nature was governed by uniform principles, stories of resurrections and celestial interventions looked less like divine truth and more like ancient mythology.

Kneeland possessed a stubborn, almost pathological honesty. He could not bring himself to preach what he did not fully believe, nor could he play the hypocrite for the sake of a regular pastoral salary. In 1812, he took a step that stunned his parishioners: he resigned his pulpit in Langdon and stepped away from the active Christian ministry.

He did not immediately abandon Christianity entirely; rather, he stepped into a wilderness of secular labor, attempting to quiet his intellectual torment with physical and commercial enterprise. He moved to New York City and joined his brother in a business venture, working as a merchant and trying his hand at developing pedagogical materials. He patented a new spelling system, wrote an introductory grammar textbook, and attempted to reinvent himself as an educator and entrepreneur. But Kneeland was an indifferent businessman, and New York was expensive and unforgiving. The business venture soured, and within a few years, he was nearly destitute.

Meanwhile, the Universalist movement had not forgotten him. Ministers of Kneeland’s intellectual caliber and oratorical presence were rare, particularly in the mid-Atlantic states where Universalism was trying to establish a permanent foothold in the growing cities. In 1817, after five years out of the pulpit, Kneeland received an urgent overture from the First Universalist Society of Philadelphia. The congregation was small, factional, and desperately in need of a sophisticated, learned pastor who could hold his own against the city’s powerful Presbyterian and Episcopal establishments.

Kneeland hesitated. He was fifty-three years old, tired, and acutely aware that his private views on the supernatural were far more radical than those of the average churchgoer. Yet he missed the pulpit. He believed in the moral teachings of Jesus—in the beauty of the Sermon on the Mount, the brotherhood of humanity, and the urgent necessity of moral reform. Perhaps, he reasoned, he could strip the gospel of its superstitious baggage and preach a purely rational, ethical Christianity. He convinced himself that as long as he affirmed the supreme benevolence of God and the ultimate harmony of creation, he was being true to the spirit of the Universalist charter.

He accepted the call and arrived in Philadelphia in the autumn of 1818.

The move appeared to inaugurate the most triumphant chapter of his life. In the burgeoning metropolis, Kneeland found a stage worthy of his talents. He was tall, dignified, and possessed an innate, patrician grace that commanded respect the moment he stepped onto the platform. His snow-white hair, which had begun turning early, framed a pale, thoughtful face dominated by piercing, analytical eyes. He did not yell, leap, or trade in emotional melodrama; he spoke with the quiet, devastating authority of a philosopher dissecting a problem in natural history.

Crowds began to fill the Universalist meetinghouse on Lombard Street. Kneeland was not merely preaching; he was publishing. Between 1818 and 1825, he turned out a dizzying stream of intellectual output. He launched and edited a religious periodical, The Christian Messenger, which reached subscribers throughout the mid-Atlantic and New England. He issued a new, monumental edition of the New Testament in Greek and English, painstakingly setting type himself and adding exhaustive critical notes that earned the admiration of classical scholars across the nation. He published volumes of lectures on the harmony of nature and divine revelation.

In the pulpit, however, the tightrope he walked was beginning to fray. Kneeland could not suppress his fascination with natural philosophy, mechanical science, and modern biblical criticism. More and more, his sermons drifted from traditional spiritual themes to lectures on biology, astronomy, geology, and sociology. When he spoke of "God," his language grew increasingly abstract. He spoke less of a personal Heavenly Father who answered prayers and more of the "Great First Cause"—an impersonal, eternal energy animating the physical universe according to immutable laws.

Conservative members of the Philadelphia congregation grew deeply uneasy. Where was the living Jesus? Where was the assurance of individual personal immortality? When members approached him in private to ask whether he believed in the literal physical resurrection of Christ, Kneeland gave answers that were evasive, nuanced, and troubling. He argued that the spiritual resurrection—the survival of Christ’s moral teachings—was the true essence of the miracle, and that whether the physical body of Jesus walked out of the tomb was a historical question of secondary importance.

To the orthodox within his own church, this was not Universalism; it was outright infidelity disguised in pastoral vestments. Rumors began to circulate through the Philadelphia religious press that the minister of Lombard Street was a deist in disguise, a wolf in sheep’s clothing who was systematically undermining the faith of his flock.

The crisis reached a tipping point when Kneeland invited outside thinkers to speak from his pulpit whose views were notoriously radical. He became fascinated by the emerging utopian socialist ideas of Robert Owen, the wealthy Welsh industrialist who had established the communal experiment at New Harmony, Indiana. Owen openly declared that all organized religions were engines of ignorance and human subjugation. When Owen visited Philadelphia, Kneeland welcomed him warmly, attended his lectures, and publicly defended Owen’s right to be heard without persecution.

The conservative faction of the Philadelphia society had had enough. In 1825, open warfare broke out within the church. Accusations of heresy were lodged, congregational meetings devolved into shouting matches, and the trustees moved to censure their pastor. Kneeland, refusing to apologize or compromise his intellectual freedom, led a substantial faction of his supporters out of the Lombard Street building. They organized a new, independent society, meeting in rented halls where Kneeland could lecture with absolute freedom.

Yet the split took a heavy emotional toll. Kneeland was weary of the perpetual sectarian warfare, weary of having to justify his intellectual progress to councils and committees, and increasingly alienated from the very concept of organized, sectarian Christianity. In 1827, after a bitter, exhausting struggle that fractured the Philadelphia movement, Kneeland resigned his charge and turned north, accepting a temporary invitation to preach to an independent congregation in Prince Street, New York City.

It was in New York that the final threads holding Kneeland to the Christian tradition snapped completely. The city was a cauldron of radical social ideas, labor organizing, and open religious skepticism. Here, Kneeland encountered a circle of thinkers who did not merely seek to reform Christianity, but to replace it entirely with a secular, rational order founded on science, human rights, and social justice.

Among them was Frances Wright, a brilliant, scandalous Scottish-born reformer who had arrived in America to lecture on women’s rights, the abolition of slavery, and the tyranny of religious superstition. Wright was a dynamo of radicalism: an open materialist who traveled the country delivering electrifying speeches to vast crowds, shocking polite society by appearing unchaperoned on public stages and demanding equal legal rights for women and free public education for all children.

Kneeland heard Wright speak and was utterly captivated. Her critique of clerical power, her insistence that true morality had nothing to do with supernatural creeds, and her call for a society based on reason resonated with everything he had privately concluded over decades of solitary study. Wright and her intellectual partner, Robert Dale Owen (son of Robert Owen), established a newspaper called the Free Enquirer and transformed a former church in New York into the "Hall of Science"—a secular temple dedicated to public lectures on chemistry, mechanics, physiology, and political economy.

Kneeland threw himself wholeheartedly into the Wright-Owen circle. He abandoned the Prince Street church, broke his final formal ties with the Universalist denomination, and joined the editorial circle of the freethinkers. The transformation was complete. The boy from Gardner who had cowered under the rafters in terror of the Calvinist hell, the young Baptist schoolmaster baptized in a frozen stream, the rising Universalist theologian who had debated Hosea Ballou and edited the Greek scriptures, had stepped outside the church doors forever.

He was no longer a minister of Christ. He was a champion of Free Thought.

In taking this step, Kneeland severed himself from the protective embrace of the religious establishment. In early nineteenth-century America, a man could be a Baptist, a Methodist, a Universalist, or even a skeptical Unitarian, and still remain within the boundaries of respectable citizenship. But an "infidel"—a man who openly declared that the Bible was a human creation and that nature was the only true divinity—was viewed as a public enemy, a moral monster, and a traitor to the republic.

Kneeland, now in his late fifties, did not care. He had spent his life searching for truth, shedding dogmas like outworn garments. He was convinced that the human race was on the verge of a magnificent intellectual awakening, and that the superstition which had bound humanity for millennia was finally crumbling before the light of science and reason.

In 1830, a group of workingmen and freethinkers in Boston, Massachusetts—the ancient citadel of the Puritans—sent an urgent letter to New York. They were organizing a society to advance the principles of free inquiry, and they needed a leader. They needed an editor to establish an uncompromising newspaper, a public lecturer of unblemished moral character, deep learning, and oratorical power who could stand up against the city’s entrenched religious and political aristocracy.

Abner Kneeland packed his bags, loaded his printing materials, and set his face toward Boston. The pulpit of doubts was behind him; the storm of his life was about to begin.