The principal events in Christian Wolff’s life are these: He was the son of a baker, and was born at Breslau in 1679. He first studied Theology and then Philosophy, and in 1707 he became Professor of Mathematics and Philosophy at Halle. Here the pietistic theologians, and more especially Lange, treated him in the basest manner. Piety did not trust this understanding; for piety, if it is true, embodies a content which is speculative in nature, and which passes beyond the understanding. As his opponents could make no headway by their writings, they resorted to intrigues. They caused it to be conveyed to King Frederick William I., the father of Frederick II., a rough man who took an interest in nothing but soldiers, that according to the determinism of Wolff, free will was impossible, and that soldiers could not hence desert of their own free will, but by a special disposition of God (pre-established harmony)—a doctrine which, if disseminated amongst the military, would be extremely dangerous. The king, much enraged by this, immediately issued a decree that within forty-eight hours Wolff should leave Halle and the Prussian States, under penalty of the halter. Wolff thus left Halle on the 23rd of November, 1723. The theologians added to all this the scandal of preaching against Wolff and his philosophy, and the pious Franke thanked God on his knees in church for the removal of Wolff. But the rejoicings did not last long. Wolff went to Cassel, was there immediately installed first professor in the philosophic faculty at Marburg, and at the same time made a member of the Academies of Science of London, Paris, and Stockholm. By Peter the First of Russia he was made Vice-President of the newly instituted Academy in St. Petersburg. Wolff was also summoned to Russia, but this invitation he declined; he received, however, an honorary post, he was made a Baron by the Elector of Bavaria, and, in short, loaded with public honours which, more especially at that time, though even now it is the case, were very much thought of by the general public, and which were too great not to make a profound sensation in Berlin. In Berlin a commission was appointed to pass judgment on the Wolffian philosophy—for this it had not been possible to eradicate—and it declared the same to be harmless, that is to say, free from all danger to state and religion; it also forbade the theologians to make it a subject of dispute, and altogether put an end to their clamour. Frederick William now issued a recall in very respectful terms to Wolff, who, however, hesitated to comply with it owing to his lack of confidence in its sincerity. On the accession of Frederick II. in 1740 he was again recalled in terms of the highest honour (Lange had meanwhile died), and only then did he comply. Wolff became Vice-Chancellor of the University, but he outlived his repute, and his lectures at the end were very poorly attended. He died in 1754.[276]