A serious heretical outbreak had been occurring in Southern France. There, it would seem, all the schisms that had disturbed the Church since her foundation were gathered together--Arians, Manichæans, and Gnostics--to which were added certain more recent sects, such as the Cathars, the Waldenses, and the Boni Homines, or Good People. These new-comers deserve a word of explanation. The Cathars, like the Gnostics, were dualists; indeed, their creed was little more than a development of Gnosticism. They believed that the earth was the only hell or purgatory, that it was given over to the power of the devil, and that human bodies were no more than the prisons of the angel spirits that fell with Lucifer. In heaven their celestial bodies still awaited them, but they could not resume these until they had worked out their expiation. To accomplish this a man must die reconciled with God; failing that, another earthly existence awaited him in the body of man or beast, according to his deserts. It will be seen that, saving for abundant Christian elements introduced into this faith, it was little more than a revival of metempsychosis, the oldest and most fascinating of intelligent beliefs. The Waldenses, or Vaudois, with whom were allied the Good People, were the earliest Protestants, as we understand the term. They claimed for every man the right to interpret the Bible and to celebrate the sacraments of the Church without the need of being in holy orders. Further, they denied that the Roman Church was the Church of Christ. These sects were known collectively as the Albigenses, so called because the Council of Lombers, convoked to pronounce their condemnation, had been held in the Diocese of Albi in 1165. [Illustration: _Photo by Anderson._ ST. PETER THE MARTYR PREACHING. From the Painting by Berruguete.] Pope Innocent III made an attempt to convert them; with this aim in view he sent two monks, Peter de Castelnau and one Rodolfe, to restore order amongst them and induce them to return to submission. But when they murdered one of his legates the Holy Father had recourse to those other less legitimate measures of combating liberty of conscience. He ordered the King of France, the nobles and clergy of the kingdom, to assume the crusader’s cross, and to proceed to the extirpation of the Albigensian heretics, whom he described as a worse danger to Christendom than the Saracens; and he armed them for the fray with the same spiritual weapons that John VIII had bestowed upon those who went to war in Palestine in the ninth century. Upon all who might die in the service of the Church he pronounced a plenary indulgence.