Luther, the son of a poor miner, was born at Eisleben, Saxony, November 10, 1483. He became an Augustinian monk, in 1507 was consecrated a priest, and the next year was made professor of philosophy in the University of Wittenberg. In 1511 he visited Rome, and on his return to Wittenberg was made doctor of theology. He had already become known through the power and independence of his preaching. Although he went to Rome "an insane papist," as he said, and while he was still intensely devoted to the Church and its leaders, he made known his belief in what became the fundamental doctrines of Protestantism, exclusive authority of the Bible--implying the right of private judgment--and justification by faith. The immediate occasion of Luther's first great protest was the sale of indulgences by the Dominican monk John Tetzel. From early times the church authorities had granted indulgences or remissions of penances imposed on persons guilty of mortal sins, the condition being true penitence. At length the Church began to accept money, not in lieu of penitence, but of the customary penances which usually accompanied it. Before 1517 Luther had given warnings against the abuse of indulgences, without blaming the administration of the Church. But when in that year Tetzel approached the borders of Saxony selling indulgences in the name of the Pope, Leo X, who wanted money for the building of St. Peter's Church in Rome, Luther, with many of the better minds of Germany, was greatly offended by the vender's methods. Against the course of Tetzel Luther took a firm stand, and when the reformer posted his theses (summarized by Koestlin) on the church door at Wittenberg the first great movement of the Reformation in the sixteenth century was inaugurated. In accordance with the impartial plan of the present work regarding the treatment of controverted matters, it is here sought to satisfy the historic sense, which includes the sense of justice, by giving a presentation of each view of the story--the Protestant by Koestlin, the Catholic by Jean M. V. Audin, whose _Life of Luther_ has been called the "tribunal" before which the great reformer must be summoned for his answer. JULIUS KOESTLIN Luther longed now to make known to theologians and ecclesiastics generally his thoughts about indulgences, his own principles, his own opinions and doubts, to excite public discussion on the subject, and to awake and maintain the fray. This he did by the ninety-five Latin theses or propositions which he posted on the doors of the Castle Church at Wittenberg on October 31, 1517, the eve of All Saints' Day and of the anniversary of the consecration of the church.