Voltaire

To understand Voltaire's productivity is to understand dominant extraverted intuition operating without a governor. Ne does not specialize; it colonizes. It moves laterally across domains, finding structural similarities and unexpected connections, restless in the face of any single form or genre. Voltaire wrote verse tragedy in the manner of Racine and then satirized the conventions of that very genre in the same decade. He produced a serious history of Charles XII of Sweden and then, in Candide, eviscerated the philosophical optimism of Leibniz through a traveling comedy of horrors. He spent years on a popular account of Newtonian physics partly inspired by his time in England with Madame du Châtelet, and then turned to writing the Philosophical Dictionary—a deliberately unsystematic compendium that worked by juxtaposition and provocation rather than by architecture.

The England years (1726–1729) show Ne at its most generative. Voltaire arrived as a bitter exile and left with a new mental landscape. He absorbed Locke's empiricism, Newton's method, and the English practice of religious tolerance—not as an academic exercise but as intellectual ammunition. His Letters Concerning the English Nation(published in England in 1733, then smuggled into France) used England as a mirror held up to French backwardness. Ne thinks comparatively: it is always asking what another system or tradition reveals about the one it is examining. Voltaire never stopped asking that question, which is why his work ranges so widely—drama, history, philosophy, economics, theology—without ever feeling like dilettantism. Each domain was another angle on the same underlying question: what is superstition, and how do you kill it?

The sheer velocity of his output was itself an Ne phenomenon. Voltaire's correspondents frequently marveled at the rate at which manuscripts arrived—essays, poems, revised play drafts, polemical pamphlets, responses to critics he had read only the previous afternoon. He did not labor over a single masterpiece. He moved, constantly, from project to project, cause to cause. The Calas affair of 1762—in which he took up the defense of a Protestant merchant falsely convicted of murdering his son to prevent his conversion to Catholicism—consumed him for years and ended in the rehabilitation of the Calas family. But even in the middle of it, he was writing plays, corresponding with Catherine, and publishing philosophical squibs. The ENTP does not focus; it multiplies.

If Ne supplied the ammunition, auxiliary introverted thinking showed Voltaire how to aim. Ti is not interested in whether an idea is socially acceptable or emotionally comforting; it is interested in whether it is internally consistent. The ENTP's Ti works as a quality-control mechanism on Ne's proliferations, stripping away rhetoric to expose contradictions. In Voltaire's hands, this became the defining polemical method of the French Enlightenment: find the logical structure of an opponent's position, locate the point at which it collapses, and illuminate that collapse with sufficient theatrical vividness that no reader can unsee it.

Candide (1759) is Ti operating at its purest. Leibniz's philosophical optimism—the argument that this is the best of all possible worlds—is not refuted by sustained philosophical argument but by systematic narrative demonstration of its absurdity. Dr. Pangloss repeats his formula through earthquake, inquisition, rape, and slavery, and each repetition makes the formula more grotesque. Voltaire does not rebut optimism; he dissolves it by applying it faithfully to reality. This is Ti thinking: find the principle, follow it wherever it leads, and let the reductio ad absurdum do the work.

His campaign against the Catholic Church—waged under the rallying cry “Écrasez l'infâme!” (Crush the infamous thing!)—was similarly structured. Voltaire did not argue against Christianity on emotional grounds or from wounded personal faith. He argued against it as a system: its internal inconsistencies, its historical record of persecution, the gap between its professed values and its institutional behavior. He was particularly devastating on what we might now call motivated reasoning—the tendency of religious apologists to explain away evidence that contradicts their commitments. Ti cannot abide motivated reasoning, and Voltaire made a career of exposing it wherever it appeared, whether in theology, in jurisprudence, or in the self-serving arguments of the French aristocracy.

Tertiary extraverted feeling in an ENTP does not produce warmth in the conventional sense. It produces something more theatrical: a finely calibrated awareness of social atmospheres, an instinct for what an audience wants to feel, and a tendency to manage one's public persona with the deliberateness of a stage director. Voltaire's Fe was expressed most vividly in his love of the theater—not merely as a form but as a mode of being. He wrote more than fifty plays, directed amateur productions at Ferney, and understood instinctively that the Enlightenment's arguments needed to be dramatized, performed, made vivid, if they were to reach beyond the educated elite.

His cultivation of his own celebrity followed the same logic. The pen name “Voltaire” (adopted in the early 1720s, its derivation still debated) was itself a performance decision: a more memorable, more aristocratic-sounding identity than the bourgeois ”Arouet.” He managed his correspondence with Catherine II as a carefully orchestrated exchange of flattery and intellectual sparring, positioning himself as the indispensable sage of Ferney. When Catherine bought his library for 15,000 livres and installed him as its paid keeper, he accepted with a performance of grateful humility that was entirely strategic—he needed the financial security, but he also needed the association with an enlightened monarch to reinforce his own prestige.

The distinction between tertiary and auxiliary Fe matters here. Voltaire was not, at bottom, a deeply empathetic man. He could be cruel in print, dismissive of rivals, and shockingly callous about people he considered beneath him—his correspondence contains anti-Semitic passages that no amount of Enlightenment enthusiasm can excuse. His Fe was an instrument of social navigation rather than genuine fellow-feeling, which is precisely what tertiary Fe in an ENTP looks like: social intelligence deployed in service of the self and its causes, not as an end in itself. He cared abouthumanity in the abstract far more reliably than he cared about any particular human being who stood in his way.

Inferior introverted sensing in an ENTP tends to express itself in two characteristic patterns: a troubled relationship to tradition and precedent (which Ne dismisses while Si secretly craves), and an unusually tenacious memory for personal injury. Voltaire displayed both. His relationship to the past was deeply ambivalent: he championed reason and progress against what he saw as the dead weight of tradition, yet he also produced serious historical scholarship—his Age of Louis XIV and Essay on the Customs and Spirit of Nations were genuine contributions to historiography, not mere polemics. He needed the past even as he argued against its authority.

The grudges were more straightforward. Voltaire nursed slights across decades. His imprisonment in the Bastille in 1717—for satirical verses aimed at the Regent—left him with a permanent alertness to the dangers of proximity to power without the protection that power could offer. His second imprisonment in 1726, followed by his forced exile to England, deepened the wound. He spent the next fifty years keeping himself just far enough from Paris to be safe, while remaining close enough to the French cultural conversation to matter. Inferior Si does not let go easily; it stores injuries in the body, in the nervous system, as procedural knowledge about what is dangerous.

The twenty years at Ferney were, in this sense, an inferior Si resolution: the ENTP who had spent his life in motion finally building a fixed point. He planted trees at Ferney (famously remarking that an old man who plants trees believes in the future), established the watchmaking workshops, and created a small community of dependents he genuinely felt responsible for. This was not inconsistency; it was the inferior function finding its late expression, the restless mind discovering that it needed roots in order to conduct its endless war against everything that refused to make sense.

Why ENTP Over INTP

The Fe dimension is decisive. Voltaire's famous saying—“I disapprove of what you say, but I will defend to the death your right to say it”—is an Fe formulation, not a Ti one. The INTP would simply note that suppressing speech is logically incoherent with a commitment to truth. Voltaire felt the injustice of censorship as an affront to something social, something about the shared intellectual atmosphere that makes civilization possible. His Calas campaign was similarly driven: not by abstract principle alone, but by the theatrical horror of an innocent man tortured and executed, an image that demanded public witness and public outrage. ENTPs use Fe to mobilize; INTPs prefer to demonstrate. Voltaire always mobilized. The Denis Diderot of his circle was, by contrast, more privately emotional—his Fi ran deeper and more personally—but even Diderot lacked Voltaire's instinct for the performance, the crowd, the perfectly timed polemic. Voltaire alone understood that the Enlightenment needed a showman, and he became one.