People: Thomas Paine and the age of reason

Thomas Paine

The Age of Reason 

The Age of Reason; Being an Investigation of True and Fabulous Theology is a three-part deist treatise by Thomas Paine, the English-American political activist best known for Common Sense (1776) and Rights of Man. It was published in parts in 1794 (Part I), 1795 (Part II), and 1807 (Part III). 

Background and Context

Paine wrote much of it while in France during the French Revolution. He completed Part I hurriedly in December 1793, just before his arrest and imprisonment in the Luxembourg Prison during the Reign of Terror (he was released in 1794). He aimed to counter the rise of atheism and superstition amid revolutionary upheaval, promoting rational belief in God based on nature and reason rather than organised religion or scripture. 

Paine dedicated it to “my fellow-citizens of the United States of America” and positioned it as a defense of Enlightenment principles, fearing that political revolutions could lead to moral nihilism without a rational foundation for belief. 

Main Content and Arguments

The book is a passionate defense of deism (belief in a creator God knowable through reason and the study of the natural world/universe, without revelation, miracles, or church intermediaries) and a sharp critique of “revealed” religions, especially Christianity.

•  Part I: Outlines Paine’s personal creed and positive case for deism. He argues that the “structure of the universe” and its order provide clear evidence of a divine creator, but rejects claims of special revelations, miracles, or prophecies as hearsay or fraud. He criticises organised churches for corruption, power-seeking, and using mystery and superstition to control people. Paine emphasises reason as the only reliable tool for truth and presents his views accessibly for a broad audience. 

•  Part II: A detailed, often irreverent textual analysis of the Bible (Old and New Testaments). Using early forms of historical and literary criticism, Paine points out inconsistencies, chronological errors, implausible miracles, moral atrocities (e.g., wars and massacres attributed to God), and argues that books like the Pentateuch were not written by their traditional authors (e.g., not by Moses). He calls much of it “fabulous” (mythical) rather than divine, labelling Christianity a “fable” built on human inventions. He also critiques the Quran and other religious texts similarly. 

•  Part III: Shorter, consisting of additional reflections and responses to critics.

Paine’s style is direct, plainspoken, and polemical—aimed at ordinary readers rather than elites. He famously wrote that he had “never used any other weapon” than reason. 

As popular as….

The book was a bestseller in the U.S. and sparked a deist revival there, but it was highly controversial. Many branded Paine an atheist (despite his explicit deism) or blasphemer, which damaged his reputation in America—contributing to him dying in relative obscurity in 1809, with few attending his funeral. It drew fierce rebuttals from clergy and conservatives in Britain and the U.S., where it was seen as undermining Christianity and social order. In France, it aligned with revolutionary secularism but was polarising. 

Over time, it influenced freethinkers, Enlightenment thought, and later skeptics (e.g., echoes in Mark Twain). It remains a key text in the history of religious criticism, secularism, and rationalism, making sophisticated deist arguments accessible. 

Significance

The Age of Reason reflects Paine’s consistent commitment to liberty, reason, and anti-authoritarianism across politics and religion. It argues that true religion is universal and natural, not tied to any institution or book, and that “the way to God was… open to every man alike.” While some arguments (e.g., on biblical authorship) have been refined by modern scholarship, its core call to question dogma through reason endures. 

Key arguments in Part I of The Age of Reason focus on Paine’s positive case for deism and his critique of “revealed” religion. Written hurriedly in late 1793 while Paine was in France, this section emphasises reason, the natural world as evidence of a creator, and the rejection of organised churches and supernatural claims. It is more philosophical and constructive than the detailed biblical criticism in Part II. 

Paine’s Personal Creed (Chapter I)

Paine opens with a clear statement of belief:

•  One God (a creator), no more.

•  Hope for happiness beyond this life.

•  Equality of man.

•  Religious duties consist in “doing justice, loving mercy, and endeavouring to make our fellow-creatures happy.”

He rejects the creeds of all organised churches (Jewish, Roman, Greek, Turkish/Muslim, Protestant, etc.), declaring, “My own mind is my own church.” National churches are “human inventions set up to terrify and enslave mankind, and monopolise power and profit.” Mental infidelity—professing belief in what one does not truly believe—is a great moral evil. He sees the American and French Revolutions as breaking the church-state alliance, paving the way for religious liberty and a return to pure deism. 

Critique of Missions, Revelations, and organised Religion (Chapters II–V, VIII)

•  Revelation is impossible to transmit reliably: A direct revelation to one person becomes mere hearsay (second-hand report) for everyone else. Claims like the Ten Commandments or the Immaculate Conception cannot be verified and lose authority when passed on.

•  All major religions claim special missions from God (Moses for Jews, Jesus/apostles for Christians, Muhammad for Muslims), but the “way to God” is open equally to every person through reason and nature—no intermediaries needed.

•  Christianity builds on “fabulous” (mythical) foundations, borrowing from earlier pagan myths (e.g., virgin births, resurrections, giants). Paine views Jesus as a virtuous man and reformer whose story was mythologised, not as divine. 

True Theology vs. False Systems (Chapters VI, IX–XI, XIII)

•  Deism is the true theology: It is simple and universal—contemplating God’s power, wisdom, and goodness through His creation (the universe). True religion involves imitating God in moral, scientific, and mechanical ways. Paine praises the Quakers for their moral emphasis but notes they undervalue studying nature.

•  The “word of God” is not a book but the observable creation itself. Science and astronomy expand our ideas of God’s majesty far beyond any single world or scripture.

•  Christianity contradicts reason and nature: Its system (one small world, original sin, incarnation, atonement) is narrow, inconsistent, and absurd when viewed against the vast “machinery of the universe.” It shocks the moral sense (e.g., God punishing the innocent or requiring blood atonement) and cannot be true because a good God would not create a system that offends reason or a child’s sense of justice. 

The Universe as Evidence (Chapters XIV–XVI)

Paine uses astronomy and the structure of the solar system and multiple worlds to argue:

•  The immense, orderly universe proves a single, benevolent Creator.

•  Christianity’s focus on one tiny world and a localised redemption (e.g., God dying for an apple eaten by Adam and Eve) is ridiculously parochial and implies God neglects countless other worlds or absurdly repeats the drama everywhere. 

Means of Deception and Broader Impacts (Chapter XVII and others)

Paine identifies “mystery, miracle, and prophecy” as the three main tools used historically to deceive people and prop up priestcraft. Christianity harms education by prioritising dead languages and dogma over science and reason, restricting learning to protect its claims. He contrasts this with the liberating, moral effects of deism and free inquiry. 

So, what’s this all about?

Part I is Paine’s “profession of faith” and defense of rational religion amid revolutionary upheaval. He warns against atheism or superstition eroding morality and calls for a “revolution in the system of religion” parallel to political revolutions. His style is direct, accessible, and polemical, aimed at ordinary readers. He explicitly denies being an atheist—he is a deist who sees God in nature and reason, not in books or churches. 

These arguments set up the more scriptural demolition in Part II. The full text is public domain and available on sites like Wikisource. Modern readers note that while some scientific examples are dated, the core appeal to reason, individual conscience, and evidence from nature remains influential in freethought and secular traditions.

Part II of The Age of Reason (published 1795) is a detailed, often scathing textual critique of the Bible, focusing primarily on disproving its claim to be the “Word of God.” Paine wrote it with the actual texts in front of him (unlike much of Part I, composed from memory in prison). He concludes that the books are “much worse” than he had imagined—full of moral horrors, contradictions, chronological errors, and human fabrications rather than divine revelation

Paine systematically dismantles the traditional attribution and authority of the Hebrew Bible/Old 

Testament:

•  Authorship and composition: The Pentateuch (Genesis through Deuteronomy) cannot have been written by Moses. Evidence from the texts themselves includes third-person narration about Moses (“the Lord said unto Moses”), references to events after his death (e.g., his own burial), anachronisms, and retrospective phrasing. These books were composed centuries later by unknown authors as a “history” of earlier times, full of “ignorant and stupid pretenders to authorship.” Similar issues apply to Joshua, Samuel, Kings, Chronicles, etc. 

•  Moral indictment: Even if true, the content portrays a God commanding or endorsing atrocities—genocides, massacres of entire nations (including women, children, and infants) with “exulting ferocity,” assassinations, and cruelty (e.g., in the conquest narratives). Believing this as divine would require rejecting any notion of God’s moral justice. Paine argues one must “unbelieve all our belief in the moral justice of God” to accept it; the stories shock human sympathy and benevolence. 

•  Contradictions and implausibilities: Numerical inconsistencies (e.g., wildly varying census or population figures that don’t add up), chronological errors, duplicate or conflicting accounts (e.g., in Kings vs. Chronicles), and fabulous elements (talking animals, miracles without credible witnesses). Prophets are treated more like poets than historians, and many books (like Job) show non-Hebrew origins or lack internal evidence of divine inspiration. 

•  Overall verdict: The Bible is a collection of “fables,” traditions, and “downright lies,” not revelation. Antiquity makes tales less credible, not more. Paine contrasts it with works like Euclid (self-evident) or Homer (admired as genius, not literal truth). Without proven Mosaic authorship, the books lose all testimonial authority for incredible claims. 

Chapter II: The New Testament

Paine shifts to Christianity’s foundations, treating the Gospels and related books similarly:

•  Historical and textual problems: Contradictions in genealogies of Jesus, timelines (e.g., issues with Herod, the census under Quirinius), and resurrection accounts. The four Gospels were compiled later, not by eyewitness apostles; their titles are late attributions. Much of the narrative resembles earlier pagan myths (virgin births, resurrections, etc.). 

•  Jesus as a figure: Paine respects Jesus as a virtuous man and reformer whose teachings (e.g., mercy, justice) align with deism’s moral core. However, the supernatural elements, miracles, and divinity claims are “fabulous” embellishments. The story of his life and death was mythologisedband imposed on the world by later church authorities for power and control. 

•  Foundations of Christianity: It rests on Old Testament prophecies (which Paine already undermined) and hearsay. The New Testament continues the pattern of unreliable testimony for incredible events.

Paine speculates on how the canon formed and was enforced, viewing it as a human invention layered on a simple moral teacher’s story. 

Key Overarching Arguments and Tone

•  Revelation vs. hearsay: True revelation can only be direct to an individual; anything passed on is second-hand and loses authority. The Bible’s claims fail this test. 

•  Moral and rational test: Any system offending reason, justice, or humanity (e.g., original sin, atonement via blood, eternal punishment, or commanded massacres) cannot come from a benevolent Creator. The “real Word of God” is the observable universe and nature.

•  Priestcraft and deception: Organised religion uses the Bible to monopolize power, profit, and control through mystery, miracle, and prophecy.

•  Style: Direct, polemical, and accessible—aimed at ordinary readers. Paine is blunt and irreverent, calling much of it “lies, wickedness, and blasphemy,” but he maintains he is attacking corrupted systems, not true religion or morality.

Part III of The Age of Reason (published 1807) is the shortest section, subtitled An Examination of the Passages in the New Testament, Quoted from the Old and Called Prophecies Concerning Jesus Christ. Paine wrote it in the late 1790s while in the United States but delayed publication (Thomas Jefferson reportedly advised against it in 1802 due to potential backlash). It continues the biblical criticism from Part II but focuses narrowly on alleged Old Testament prophecies fulfilled by Jesus in the New Testament.

Introductory Chapter: “An Essay on Dreams”

Paine explores the nature of the mind—its faculties of imagination, judgment, and memory—to explain dreams. During sleep, imagination runs freely while judgment and memory are suspended, producing strange visions. This serves as a rational, naturalistic explanation for “prophetic dreams” and visions in the Bible, undermining claims of divine inspiration or revelation through such means. It sets up his critique of prophecy as unreliable or fabricated. 

Main Content: Examination of Prophecies

Paine systematically analyses New Testament passages (especially in Matthew) that quote or allude to Old Testament texts as prophecies about Jesus’ birth, life, ministry, death, and resurrection. 

He argues:

•  Most “prophecies” are taken out of context: They refer to contemporary events in Jewish history, not future predictions about a Messiah centuries later. Examples include passages from Isaiah, Psalms, and others commonly cited by Christians. 

•  Misapplication and distortion: The Gospel writers (or later editors) forced unrelated verses to fit Jesus’ story. Paine examines them one by one, showing linguistic, historical, or contextual mismatches. For instance, he argues that virgin birth prophecies or suffering servant passages do not align with the original Hebrew meanings or intent. 

•  No credible fulfillment: Even if some vague similarities exist, they are coincidental or retrofitted. True prophecy would need clear, unambiguous evidence, not strained interpretations.

This builds on Part II’s broader critique, reinforcing that the New Testament rests on a shaky foundation of the Old, making Christianity a “fabulous” (mythical) system rather than revealed truth. 

Broader Reflections and Conclusion

Paine reiterates core deist themes:

•  The true “Word of God” is the creation/universe, accessible through reason.

•  Organised religion relies on mystery, miracle, and (falsely interpreted) prophecy to deceive and control.

•  Jesus was a virtuous moral teacher, but the supernatural and messianic claims around him are human inventions.

He ends by offering his reasoned opinion on the afterlife: A just and benevolent Creator implies future justice—rewards for good and accountability for evil—but this is speculation based on reason, not revelation or certainty. He emphasises humility: no one can claim definitive knowledge of such matters. 

Like the earlier parts, the writing is direct, polemical, and aimed at general readers. Part III is more focused and repetitive of prior points but sharpens the attack on Christianity’s scriptural basis. It was controversial and contributed to Paine’s reputational decline in America, though it influenced later freethinkers and biblical skeptics. Modern scholarship views many of his textual observations as precursors to higher criticism, even if some specifics are dated. 

I will leave this here. Read his work for yourself, consider and come to your own conclusions. What role does organised religion play in society? Should the teachings of these religions be taken at face value or scrutinised? 

The full text is in the public domain and available on sites like Wikisource. Modern editions often include introductions contextualizing it within Paine’s life and the Age of Enlightenment.