Jean Calas affair

He printed legal briefs at his own expense and distributed them across Europe.

And in 1763, while the case was still open, he wrote a book about religious persecution that took the Calas affair as its occasion and the history of Christendom as its subject.

On the 4th of June 1764, the Royal Council annulled the judgment of the Parlement of Toulouse.

What the campaign had to accomplish is worth stating because it shaped the rest of his life.