Every great movement for reform bears within it the seeds of revolution, of the “tumult,” as Erasmus called it, and Luther’s was no exception to the general rule. Every Reformer who would carry through his reforming ideas successfully has to struggle against men and circumstances making for the “tumult,” almost as strenuously as against the abuses he seeks to overcome. We have already seen how these germs of revolution abounded in Germany, and how the revolutionists naturally allied themselves with the Reformer, and the cause he sought to promote. While Luther was hidden away in the Wartburg, the revolution seized on Wittenberg. At first his absence did not seem to make any difference. The number of students had increased until it was over a thousand, and the town itself surprised eye-witnesses who were acquainted with other University towns in Germany. The students went about unarmed; they mostly carried Bibles under their arms; they saluted each other as “brothers at one in Christ.” No rift had yet appeared among the band of leaders, although his disappointment in not obtaining the Provostship of All Saints had begun to isolate Andrew Bodenstein of Carlstadt. Unanimity did not mean dulness; Wittenberg was seething with intellectual life. Since its foundation the University had been distinguished for weekly Public Disputations in which students and professors took part. In the earlier years of its existence the theses discussed had been suggested by the Scholastic Theology and Philosophy in vogue; but since 1518 the new questions which were stirring Germany had been the subjects of debate, and this had given a life and eagerness to the University exercises. When Justus Jonas came to Wittenberg from Erfurt, he wrote enthusiastically to a friend about the “unbelievable wealth of spiritual interests in the little town of Wittenberg.” None of the professors took a keener interest in these Public Discussions than Andrew Bodenstein of Carlstadt. He had been a very successful teacher; had come under Luther’s magnetic influence; and had accepted the main ideas of the new doctrines. He had not the full-blooded humanity of Luther, nor his sympathetic tact, nor his practical insight into how things would work. He lacked altogether Luther’s solid basis of conservative feeling, which made him know by instinct that new ideas and new things could only flourish and grow if they were securely rooted in what was old. It was enough for Carlstadt that his own ideas, however hastily evolved, were clear, and his aims beneficent, to make him eager to see them at once reduced to practice. He had the temperament of a revolutionary rather than that of a Reformer.