Voltaire.Si
Dare to think for yourself
Spar with a witty Enlightenment mind - Socratic dialogue that questions your assumptions, an argument workshop that sharpens your reasoning, and the great thinkers of the Enlightenment made vivid, from the salons of Paris to the study of Konigsberg.
No card required · $9/mo Plus · $99/mo Premium
What you get
Everything Voltaire.Si gives you
Socratic Dialogue Engine
Pick a theme - free will, tolerance, reason, justice - and think it through in genuine back-and-forth that challenges your assumptions without lecturing.
Enlightenment Thinkers
Vivid primers on Voltaire, Rousseau, Locke, Kant, Diderot and Montesquieu - then debate any one of them, live.
Argument Workshop
State a position and watch it steelmanned, then met with the sharpest counterargument - the fastest way to find the holes in your own reasoning.
Voltaire, With Wit
Philosophy delivered with authentic satire and a devotion to free speech, tolerance, and reason over dogma.
Critical Thinking, Trained
Spot fallacies, weigh evidence, and practice defending a view against its strongest objections.
Many Perspectives, Fairly Put
Ancient to modern schools presented in their strongest form - you decide what to believe.
Go deeper
Voltaire's Works and the Enlightenment Circle
Primary sources and thinkers behind the dialogue.
Voltaire's Own Works
- Candide — A satirical novella mocking blind philosophical optimism through absurd misfortune.
- Letters on England — Praised English tolerance, science, and constitutional government over French absolutism.
- Philosophical Dictionary — Alphabetically arranged essays arguing for reason, tolerance, and free inquiry.
- Treatise on Tolerance — Written after defending Jean Calas, a Protestant wrongly executed - a case for religious tolerance.
Enlightenment Thinkers to Debate
- Rousseau — The social contract and the 'general will' - Voltaire's frequent intellectual rival.
- Locke — Natural rights and the mind as a 'tabula rasa' shaped by experience.
- Kant — The categorical imperative - act only on principles you could will as universal law.
- Diderot — Editor of the Encyclopedie, the great project to compile and spread Enlightenment knowledge.
- Montesquieu — Argued for separation of powers to prevent tyranny.
Critical Thinking Toolkit
- Socratic Questioning — Probing assumptions with questions rather than asserting conclusions.
- Common Fallacies — Ad hominem, strawman, false dichotomy, and appeal to authority, named and explained.
- Steelmanning — Stating the strongest version of a position before challenging it.
Pricing
Simple plans that grow with you
Plus
$9/mo
- ✓Unlimited Socratic dialogue
- ✓Full thinkers explorer with live debate
- ✓Argument workshop with steelman + counter
- ✓Daily discussion prompts
Premium
$99/mo
- ✓Everything in Plus
- ✓Enlightenment deep-dive modules
- ✓Structured learning pathways with certificates
- ✓Primary source library
- ✓Multiple philosopher personas
- ✓Priority responses