In Germany the religious formularies, composed with the object of securing even an appearance of unity or at least of preventing religious chaos, were not powerful enough to resist the anti-Christian Enlightenment that swept over Europe in the eighteenth century. At best these formularies were only the works of men who rejected the authority of the Church, and as works of men they could not be regarded as irreformable. With the progress of knowledge and the development of human society it was thought that they required revision to bring them more into harmony with the results of science and with the necessities of the age. The influence of the writings imported from England and France, backed as it was by the approval and example of Frederick II. of Prussia, could not fail to weaken dogmatic Christianity among the Lutherans of Germany. The philosophic teaching of Leibniz (1646-1710), who was himself a strong upholder of dogmatic Christianity and zealous for a reunion of Christendom, had a great effect on the whole religious thought of Germany during the eighteenth century. In his great work, /Theodicee/, written against Bayle to prove that there was no conflict between the kingdoms of nature and grace, greater stress was laid upon the natural than on the supernatural elements in Christianity. His disciples, advancing beyond the limits laid down by the master, prepared the way for the rise of theological rationalism. One of the greatest of the disciples of Leibniz was Christian Wolf (1679-1754), who was not himself an opponent of supernatural religion. The whole trend of his arguments, however, went to show that human reason was the sole judge of the truths of revelation, and that whatever was not in harmony with the verdict of reason must be eliminated. Many of his disciples like Remiarus, Mendelssohn, and Garve developed the principles laid down by Wolf until the very mention of dogma was scouted openly, and Theism itself was put forward as only the most likely among many possible hypotheses. In the revulsion against dogmatic beliefs the party of the Pietists founded by Spener towards the end of the seventeenth century found much support, while the Conscientiarians, who maintained that man's own conscience was the sole rule of faith, and that so long as man acts in accordance with the dictates of conscience he is leading the life of the just, gained ground rapidly. Some of its principal leaders were Matthew Knutzen and Christian Edlemann who rejected the authority of the Bible. The spread of Rationalism was strengthened very much by the appearance of the /Allgemeine Deutsche Bibliothek/, founded in 1764 by Nicolai in Berlin, through the agency of which books hostile to Christianity were scattered broadcast amongst a large circle of readers.