The popular outcry against this family was so violent in Languedoc, that every body expected to see the children of Calas broke upon the wheel, and the mother burnt alive.
Young Donat Calas was advised to fly into Switzerland: he went, and found a gentleman who, at first, could only pity and relieve him, without daring to judge of the rigour exercised against the father, mother, and brothers. Soon after, one of the brothers, who was only banished, likewise threw himself into the arms of the same person, who, for more than a month, took every possible precaution to be assured of the innocence of the family. Once convinced, he thought himself obliged, in conscience, to employ his friends, his purse, his pen, and his credit, to repair the fatal mistake of the seven judges of Thoulouse, and to have the proceedings revised by the king's council. This revision lasted three years, and it is well known what honour Messrs. de Grosne and Bacquancourt acquired by investigating this memorable cause. Fifty masters of the Court of Requests unanimously declared the whole family of Calas innocent, and recommended them to the benevolent justice of his majesty. The duke de Choiseul, who never let slip an opportunity of signalizing the greatness of his character, not only assisted this unfortunate family with money, but obtained for them a gratuity of 36,000 livres from the king.
On the ninth of March, 1765, the arret was signed which justified the family of Calas, and changed their fate. The ninth of March, 1762, was the very day on which the innocent and virtuous father of that family had been executed. All Paris ran in crowds to see them come out of prison, and clapped their hands for joy while the tears streamed from their eyes.
This dreadful example of bigotry employed the pen of Voltaire in deprecation of the horrors of superstition; and though an infidel himself, his essay on toleration does honour to his pen, and has been a blessed means of abating the rigour of persecution in most European states. Gospel purity will equally shun superstition and cruelty, as the mildness of Christ's tenets teaches only to comfort in this world, and to procure salvation in the next. To persecute for being of a different opinion, is as absurd as to persecute for having a different countenance: if we honour God, keep sacred the pure doctrines of Christ, put a full confidence in the promises contained in the holy scriptures, and obey the political laws of the state in which we reside, we have an undoubted right to protection instead of persecution, and to serve heaven as our consciences, regulated by the gospel rules, may direct.