All the books of the famous Abelard were burnt by order of Pope Innocent II.; but it was his _Treatise on the Trinity_, condemned by the Council of Soissons about 1121, and by the Council of Sens in 1140, which chiefly led St. Bernard to his cruel persecution of this famous man. That great saint, using the habitual language of ecclesiastical charity, called Abelard an infernal dragon and the precursor of Antichrist. Among his heresies Abelard seems to have held the opinion that the devil has no power over man; but at all events the Church had in those days, as Abelard learnt to his cost, though, considering that his disciple Arnauld of Brescia was destined to be burnt alive at Rome in 1155, Abelard might have deemed himself fortunate in only incurring imprisonment, and not sharing the fate of his works as well as that of his illustrious follower. The latter calamity befell John Huss, who, having been led before the bishop's palace to see his own condemned works burnt, was then led on to be burnt himself, in 1415. Many of his works, however, were republished in the following century; but the twenty-nine errors which the Council of Constance detected in his work on the Church would probably nowadays seem venial enough. It was his misfortune to live in those days when the inhumanity of the world was at its climax. It continued at that climax for some time, though heretical authors were not always burnt with their books. Enjedim, for instance, the Hungarian Socinian, who died in 1596, survived the burning in many places of his "Explanations of Difficult Passages of the Old and New Testament, from which the Dogma of the Trinity is usually established" (_Explicationes locorum difficilium_, etc.). Peter d'Osma also, the Spanish theologian, whose _Treatise on Confession_ was condemned by the Archbishop of Toledo in the fifteenth century, might have esteemed himself happy that only his chair shared the burning of his book. Pomponacius, an Italian professor of philosophy, whose _Treatise on the Immortality of the Soul_ (1516), was burnt by the Venetians for the heretical opinion that the soul's immortality was not believed by Aristotle, and could only be proved by Scripture and the authority of the Church, seems to have died peacefully in 1526, albeit with the reputation of an atheist, which his writings do not support. Desperiers was only imprisoned when his _Cymbalum Mundi_, censured by the Sorbonne, was consigned to the flames by the Parlement of Paris (March 7th, 1537). And Luther, all of whose works were condemned to be burnt by the Diet of Worms (1521), actually survived their burning twenty-five years, though he himself had publicly burnt at Wittenberg Leo X.'s bull, anathematising his books, as well as the Decretals of previous Popes.