Catharism ( KATH-ər-iz-əm; from the Ancient Greek: καθαροί, romanized: katharoí, "the pure ones") was a Christian quasi-dualist or pseudo-Gnostic movement which thrived in Southern Europe, particularly in northern Italy and southern France, between the 12th and 14th centuries. Denounced as a heretical sect by the Catholic Church, its followers were attacked first by the Albigensian Crusade and later by the Medieval Inquisition, which eradicated the sect by 1350. Many thousands were slaughtered, hanged, or burnt at the stake, sometimes without regard for "age or sex."Followers were known as Cathars or Albigensians, (after the French city Albi where the movement first took hold), but referred to themselves as Good Christians. They famously believed that there were not one, but two Gods—the good God of Heaven and the evil god of this age (2 Corinthians 4:4). Cathars believed that the good God was the God of the New Testament faith and creator of the spiritual realm; many Cathars identified the evil god as Satan, the master of the physical world. The Cathars believed that human souls were the sexless spirits of angels trapped in the material realm of the evil god. They thought these souls were destined to be reincarnated until they achieved salvation through the "consolamentum," a form of baptism performed when death is imminent. At that moment, they believed they would return to the good God as "Cathar Perfect." Catharism was initially taught by ascetic leaders who set few guidelines, leading some Catharist practices and beliefs to vary by region and over time.The first mention of Catharism by chroniclers was in 1143, four years later the Catholic Church denounced Cathar practices, particularly the consolamentum ritual. From the beginning of his reign, Pope Innocent III attempted to end Catharism by sending missionaries and persuading the local authorities to act against the Cathars. In 1208, Pierre de Castelnau, Innocent's papal legate, was murdered while returning to Rome after excommunicating Count Raymond VI of Toulouse, who, in his view, was too lenient with the Cathars. Pope Innocent III then declared de Castelnau a martyr and launched the Albigensian Crusade in 1209. The nearly twenty-year campaign succeeded in vastly weakening the movement; the Medieval Inquisition that followed ultimately eradicated Catharism. The lack of any central organization among Cathars, regional differences in beliefs and practices, as well as the lack of sources from the Cathars themselves, has prompted some scholars to question whether the Church exaggerated its threat, and others to wonder whether it even existed. Source: Wikipedia (en)