All religions are ridiculed by those of opposite though equally insane belief.

Nothing appears more ridiculous in the eyes of a sensible man than for one denomination to criticize another whose creed is equally foolish. A Christian thinks that the Koran, the Divine revelation announced by Mohammed, is but a tissue of impertinent dreams and impostures injurious to Divinity. The Mohammedan, on his side, treats the Christian as an idolater and a dog; he sees but absurdities in his religion; he imagines he has the right to conquer his country and force him, sword in hand, to accept the faith of his Divine prophet; he believes especially that nothing is more impious or more unreasonable than to worship a man or to believe in the Trinity. The Protestant Christian, who without scruple worships a man, and who believes firmly in the inconceivable mystery of the Trinity, ridicules the Catholic Christian because the latter believes in the mystery of the transubstantiation. He treats him as a fool, as ungodly and idolatrous, because he kneels to worship the bread in which he believes he sees the God of the universe. All the Christian denominations agree in considering as folly the incarnation of the God of the Indies, Vishnu. They contend that the only true incarnation is that of Jesus, Son of the God of the universe and of the wife of a carpenter. The theist, who calls himself a votary of natural religion, is satisfied to acknowledge a God of whom he has no conception; indulges himself in jesting upon other mysteries taught by all the religions of the world.

- Paul Henri Thiry, Baron d'Holbach writing as Jean Meslier