Diderot and the Encyclopædists (Vol. 2 of 2)

In Short

This volume evaluates the intellectual achievements, imaginative writings, and far-reaching political encounters of Denis Diderot and his fellow French philosophers during the years preceding the French Revolution. It traces Diderot’s literary creations, pioneer art criticism, journey to Russia to advise Empress Catherine, and critical engagement with rival thinkers like Helvetius and Holbach. Through rigorous analysis of their philosophical arguments and social battles, the work shows how these free-thinking iconoclasts dismantled ancient religious dogmas, laid the foundations for modern utilitarian governance, and reshaped European intellectual life despite fierce opposition from church and state.

The Story

The narrative opens by exploring Denis Diderot’s creative prose and speculative dialogues, analyzing works such as Supplement to Bougainville's Travels, The Nun, and Jacques le Fataliste. Diderot uses unconventional storytelling to challenge rigid social norms, conventional marriage morality, and artificial literary constraints. While examining his homage to Samuel Richardson and Laurence Sterne, the account candidly exposes the flaws of Diderot’s fiction, noting its occasional heavy irony, lack of poetic imagination, and reliance on coarse realism.

From imaginative literature, the focus shifts to Diderot’s groundbreaking work as an art critic for Grimm’s Salons. As a reviewer of artists like Greuze, Vernet, Boucher, and Fragonard, Diderot breaks away from dry academic formulas. He injects emotional resonance, moral reflections, and vivid narrative into aesthetic evaluation, anticipating future aesthetic theories while championing art that captures authentic human feeling.

The geographical and political scope expands as Diderot embarks on an arduous journey across Europe to the court of Empress Catherine II in St. Petersburg. Traversing Holland, Diderot reaches a imperial capital defined by a sharp, stark contrast between polished European aristocratic luxury and Asian-style serfdom. Although welcomed warmly for spirited imperial conversations, Diderot ultimately fails to function as a practical political adviser. Nevertheless, his journey illustrates the immense cultural authority held by French philosophers across European capitals.

The intellectual survey then scrutinizes the broader circle of radical thinkers who shaped the era's materialism and moral theory. Helvetius’s L'Esprit introduces utility as the bedrock of public morality and governance—a concept that directly inspires Jeremy Bentham’s legal reforms in England, even as its crude psychological premises invite fierce backlash. Baron d'Holbach's unyielding materialist philosophy rejects divine oversight, framing human nature as a machine governed by cause and effect, which triggers vigorous counterarguments from Voltaire and D'Alembert. Meanwhile, the Abbé Raynal exposes colonial brutality and warns of future slave uprisings, forecasting a fierce reckoning for Western powers.

The narrative concludes in Diderot’s final years as he drafts a university system for Russia and pens masterly dialogues like Rameau's Nephew. Through a sharp clash between a serene philosopher and a cynical, envious parasite, Diderot captures the deep moral decay of old-regime society, sealing a monumental intellectual legacy.

How It Unfolds

The literary experiments Diderot uses fiction and philosophical dialogues to critique conventional morality, exploring human sexuality, social hypocrisies, and religious restraint, though his prose often lacks poetic elevation.

The birth of art criticism Reviewing biennial Paris Salons for his friend Grimm, Diderot transforms art commentary from cold technical rules into a lively, highly personal blend of moral storytelling, aesthetic theory, and emotional reflection.

The journey to St. Petersburg Travel through Holland to the autocratic court of Catherine II highlights the vast distance between Western Enlightenment ideals and Russian serfdom, testing whether philosophical advice can influence royal power.

The philosophy of utility and materialism Radical treatises by Helvetius and Holbach challenge religious orthodoxy by arguing that utility drives morality and that nature functions as a giant machine, inspiring future English legal reforms despite sparking intense controversy.

The indictment of colonial oppression The Abbé Raynal delivers fiery critiques of slavery and imperial greed, urging monarchs to intervene while warning that oppressed populations will eventually rise in violent rebellion.

The final dialogues In his closing years, Diderot drafts comprehensive plans for Russian education and writes Rameau's Nephew, exposing the petty envy and moral compromises of a corrupt social order.

The People

• Denis Diderot: A restless, brilliant French philosopher who seeks to liberate human thought from dogmatic traditions. He writes bold fiction, invents modern art criticism, and travels to Russia, though his sprawling creativity sometimes lacks poetic polish and political pragmatism.
• Catherine II (Empress of Russia): An ambitious, highly cultivated ruler who seeks to polish her autocratic reign with French philosophy. She warmly receives Diderot in St. Petersburg and exchanges letters with Grimm, using intellectual patronship for political prestige.
• Claude Adrien Helvetius: A controversial philosopher whose book L'Esprit attempts to anchor morality and social reform in public utility. Though his psychological theories are flawed, his ideas lay the foundation for modern English utilitarianism.
• Baron d'Holbach: A steadfast materialist whose radical atheism views the universe as an unyielding machine, provoking sharp philosophical resistance from Voltaire while pushing necessarian ethics to their logical limit.
• Abbé Raynal: A former priest turned history writer who uses his popular works to denounce colonial tyranny and slavery, calling on kings to reform society before violent revolutions erupt.
• Rameau's Nephew: A cynical, parasite figure in Diderot's famous dialogue who openly admits his mediocrity and envy, embodying the shameless self-interest of a decadent society.

In Its Own Voice

"When we think of what European literature was, it ceases to be wonderful that Goethe should have been unable for six whole hours to tear himself away from a book that so few men to-day, save under some compulsion, could persuade themselves to read through."

Diderot's unconventional novel Jacques le Fataliste possessed a raw, disruptive energy that enchanted great German poets despite its heavy irony and lack of poetic refinement.

"A suit of deep mourning in company is the cloud that, as it passes, causes the momentary silence of the birds."

In his art criticism, Diderot frequently wanders into quiet, evocative observations about human emotions and social behavior.

"To see the great, to court them, study their taste, bow to their fancies, serve their vices, praise their injustice--there is the secret."

The unscrupulous protagonist of Diderot's final masterpiece sourly outlines the survival strategy required in a worldly, corrupt society.

What It's Really About

This study explores how ideas break free from rigid institutional control to reshape human society. Beneath the biographical details lies a core argument: the French Enlightenment was not merely an academic exercise, but a destructive and constructive force that dismantled religious dogma and social privilege. The narrative examines whether utility and reason can replace traditional religious morality without degrading human dignity, contrasting sentimental reform with cold materialism. It investigates the awkward relationship between radical thinkers and autocratic rulers, showing how difficult it is to translate abstract philosophy into real-world politics. Ultimately, it asks how society can build a just moral code when human beings are viewed as physical machines governed by natural laws.

Why Read It Today

This text appeals to readers who enjoy intellectual history, political philosophy, and 18th-century European culture. Written with balanced historical judgment and elegant prose, it brings a crucial era to life without relying on exaggerated praise or superficial summaries.

The reading experience requires patience. The text reflects 19th-century prose style, featuring long, complex sentences, untranslated French terms, and dense philosophical arguments. It assumes the reader is familiar with European history and literary figures.

What makes the book worth reading today is its clear-eyed evaluation of radical ideas. Rather than praising every Enlightenment figure uncritically, it highlights Diderot's literary failures, Helvetius's flawed logic, and the vanity of court life in St. Petersburg. At the same time, it honors their courage in fighting censorship and religious persecution. The central debate—how to balance personal freedom, social utility, and moral responsibility—remains deeply relevant to modern readers evaluating political and ethical progress.