It is true that the huge engine first set in motion by anger against this inhuman sect was soon turned against all heretics, and the fact will surprise no one who has the remotest knowledge of practical politics. The historian, when he plots the course of the ship of State, is at ease in his study. But the ship herself, when that run was made, was blown upon, this side and that, by the fiercest passions of man, and is so to-day. Rare, indeed, are the officers and crew that, when those gales are at their height, can hold the vessel steady. More often her course is as viciously jagged as that of lightning. It is not for the American, with our treatment of the South and the negro question since the Civil War before him, to cast a stone at the thirteenth century. In thirteenth century Languedoc, as in nineteenth century America, war made an end of nice distinctions. At the time of the Conference of Pamiers, in 1207, before the Crusade had begun, Peter de Vaux-Cernay could distinguish clearly between Waldensians and “heretics” par excellence: that is Manicheans. In 1226, nineteen years later, we find a Cardinal-Legate of the Holy See persuading Louis VIII of France to attack the city of Avignon because there were many Waldenses there, and this in spite of the fact that it was a fief of the Empire. From the first the theory of the Church had been that heresy itself, and not any one particular kind of heresy, however repulsive, was the enemy. Before the Albigensian Crusade is ended, we find that this theory is being worked out in fact.