Antwerp was not only the centre of economic activity for the Low Countries, it became, as early as 1518, the cradle of Lutheranism. It is needless to recall here how the doctrines of Martin Luther, born in the German Empire, had gradually spread through Northern Europe, and how his criticism of the morals of the clergy had originated a criticism of the dogmas of the Roman Catholic religion. Hitherto similar movements, such as those started in the Low Countries by Gerard de Brogne and the Beggards during the Middle Ages, and, during the last century, by Gerard de Groote, the founder of the Brothers of the Common Life, had confined themselves to fighting the excesses of the Church, remaining throughout orthodox, as far as the dogmas were concerned. Now the principle of free individualism was transplanted from the economic to the religious domain, and capitalistic initiative and freedom of trade found corresponding expression in free interpretation of the Bible. The movement had been prepared and, to a certain extent, favoured by the educative action of the Brothers of the Common Life, who, though remaining strictly faithful to the Church, had nevertheless substituted, in their schools, lay for clerical teaching. It is interesting to remark that both Humanism, as represented by its greatest master, Erasmus, and the art of printing, represented by Thierry Maertens and Jean Veldener, who were its originators at Alost and Louvain, were closely connected with the educational movement promoted by the Brothers. Erasmus had first studied at Deventer. The extraordinary success of his _Adagia_, published in 1500, and of his early works, influenced by Thomas More (with whom he had been brought into contact during his stay in England as a protege of Lord Mountjoy), seems certainly strange in view of the unbending attitude taken by Charles V towards Lutheranism. But Humanism had become the fashion in high aristocratic and ecclesiastical circles, and neither the young emperor nor his gouvernante, Mary of Hungary, disguised their interest in the movement. It is true that Erasmus endeavoured to reconcile Christian dogmas with the new philosophy inspired by the Classics, but his attacks against asceticism, the celibacy of the priests and the superstition and ignorance of the monks would certainly not have been tolerated if they had influenced social life at large. The situation, at the beginning of the fifteenth century, among intellectuals and aristocrats was very much the same as that which prevailed at the courts of France, Prussia and Russia at the end of the eighteenth century. Princes and nobles extended to Voltaire similar favours, and for the same reasons. As long as their situation in the State was not threatened, they encouraged doctrines and intellectual pursuits which, besides providing them with fresh interests and distractions, justified to a certain extent the laxity of their morals. But, whatever their