About a hundred years after the final settlement of the boundary line between Protestantism and Catholicism, began to appear the signs of the fourth great peril of the Church of Rome. The storm which was now rising against her was of a very different kind from those which had preceded it. Those who had formerly attacked her had questioned only a part of her doctrines. A school was now growing up which rejected the whole. The Albigenses, the Lollards, the Lutherans, the Calvinists, had a positive religious system, and were strongly attached to it. The creed of the new sectaries was altogether negative. They took one of their premises from the Protestants, and one from the Catholics. From the latter they borrowed the principle, that Catholicism was the only pure and genuine Christianity. With the former, they held that some parts of the Catholic system were contrary to reason. The conclusion was obvious. Two propositions, each of which separately is compatible with the most exalted piety, formed, when held in conjunction, the groundwork of a system of irreligion. The doctrine of Bossuet, that transubstantiation is affirmed in the Gospel, and the doctrine of Tillotson, that transubstantiation is an absurdity, when put together, produced by logical necessity the inferences of Voltaire.
Had the sect which was rising at Paris been a sect of mere scoffers, it is very improbable that it would have left deep traces of its existence in the institutions and manners of Europe. Mere negation, mere Epicurean infidelity, as Lord Bacon most justly observes, has never disturbed the peace of the world. It furnishes no motive for action. It inspires no enthusiasm. It has no missionaries, no crusaders, no martyrs. If the Patriarch of the Holy Philosophical Church had contented himself with making jokes about Saul's asses and David's wives, and with criticising the poetry of Ezekiel in the same narrow spirit in which he criticised that of Shakespeare, Rome would have had little to fear. But it is due to him and to his compeers to say that the real secret of their strength lay in the truth which was mingled with their errors, and in the generous enthusiasm which was hidden under their flippancy. They were men who, with all their faults, moral and intellectual, sincerely and earnestly desired the improvement of the condition of the human race, whose blood boiled at the sight of cruelty and injustice, who made manful war, with every faculty which they possessed, on what they considered as abuses, and who on many signal occasions placed themselves gallantly between the powerful and the oppressed. While they assailed Christianity with a rancor and unfairness disgraceful to men who called themselves philosophers, they yet had, in far greater measure than their opponents, that charity towards men of all classes and races which Christianity enjoins. Religious persecution, judicial torture, arbitrary imprisonment, the unnecessary multiplication of capital punishments, the delay and chicanery of tribunals, the exactions of farmers of the revenue, slavery, the slave trade, were the constant subjects of their lively satire and eloquent disquisitions. When an innocent man was broken on the wheel at Toulouse, when a youth, guilty only of an indiscretion, was beheaded at Abbeville, when a brave officer, borne down by public injustice, was dragged, with a gag in his mouth, to die on the Place de Grêve, a voice instantly went forth from the banks of Lake Leman, which made itself heard from Moscow to Cadiz, and which sentenced the unjust judges to the contempt and detestation of all Europe. The really efficient weapons with which the philosophers assailed the evangelical faith were borrowed from the evangelical morality. The ethical and dogmatical parts of the Gospel were unhappily turned against each other. On one side was a church boasting of the purity of a doctrine derived from the Apostles, but disgraced by the massacre of St. Bartholomew, by the murder of the best of kings, by the war of Cevennes, by the destruction of Port Royal. On the other side was a sect laughing at the Scriptures, shooting out the tongue at the sacraments, but ready to encounter principalities and powers in the cause of justice, mercy, and toleration.