Treatise on Tolerance

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The Treatise on Tolerance on the Occasion of the Death of Jean Calas from the Judgment Rendered in Toulouse (Pieces Originales Concernant la Mort des Sieurs Calas det le Jugement rendu a Toulouse) is a work by French philosopher Voltaire, published in 1763, in which he calls for tolerance between religions, and targets religious fanaticism, especially that of the Jesuits (under whom Voltaire received his early education), indicting all superstitions surrounding religions.


Voltaire's work follows the trial of Jean Calas (1698-1762), a Protestant accused of murdering his son Marc-Antoine to prevent his conversion to the Church and executed in Toulouse on March 10, 1762 despite enduring torture after the prosecution used perjured witnesses, in a case which Voltaire took to display Catholic prejudice and fanaticism. In 1765, after the king fired the chief magistrate and the case was retried by another court, Calas was posthumously exonerated and his family paid 36 thousand francs.

Voltaire's argument is illustrated in the following passages:

"There are about forty millions of inhabitants in Europe who are not members of the Church of Rome; should we say to every one of them, 'Sir, since you are infallibly damned, I shall neither eat, converse, nor have any connections with you?'";

"O different worshippers of a peaceful God! If you have a cruel heart, if, while you adore he whose whole law consists of these few words, "Love God and your neighbor'..."

"I see all the dead of past ages and of our own appearing in His presence. Are you very sure that our Creator and Father will say to the wise and virtuous Confucius, to the legislator Solon, to Pythagoras, Zaleucus, Socrates, Plato, the divine Antonins, the good Trajan, to Titus, the delights of mankind, to Epictetus, and to many others, models of men: 'Go, monsters, go and suffer torments that are infinite in intensity and duration. Let your punishment be eternal as I am. But you, my beloved ones, Jean Châtel, Ravaillac, Damiens, Cartouche, etc. who have died according to the prescribed rules, sit forever at my right hand and share my empire and my felicity.' You draw back with horror at these words; and after they have escaped me, I have nothing more to say to you."

Publication and reception[edit]

Voltaire finished the work by January 2, 1763, and it was printed by the Cramer brothers in Geneva in April 1763. After copies had been distributed to selected recipients include Madame de Pompadour, ministers of the French privy council, the king of Prussia, and some German princes, it began to be distributed in October 1763 and was quickly banned.[1][2]

In January 2015, after the Charlie Hebdo shooting, it was reported that Treatise on Tolerance had become a bestseller in France more than 250 years after its first publication.[3][4]


  1. ^ Davidson, Ian (2010). Voltaire: A Life. Profile. p. 328. ISBN 1846682266.
  2. ^ Harvey, Simon (2000). Voltaire: Treatise on Tolerance (Cambridge Texts in the History of Philosophy). Cambridge University Press. p. xiii. ISBN 0521649692.
  3. ^ "Voltaire's Treatise on Tolerance becomes bestseller following Paris attacks". The Guardian. 16 January 2015. Retrieved 11 August 2015.
  4. ^ "After Paris Attacks, Voltaire's 'Tolerance' Is Back In Vogue". NPR. 15 February 2015. Retrieved 31 August 2015.

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