In the year 1508 the elector of Saxony nominated him professor of philosophy in the university of Wittenberg; and in 1509 he began to give biblical lectures. These lectures were the awakening cause of new life in the university, and soon a great number of students from all parts of Germany gathered round Luther. Even professors came to attend his lectures and hear his preaching. The year 1511 brought an apparent interruption, but in fact only a new development of Luther’s character and knowledge of the world. He was sent by his order to Rome on account of some discrepancies of opinion as to its government. The tone of flippant impiety at the court and among the higher clergy of Rome shocked the devout German monk. He then discovered the real state of the world in the center of the Western church. He returned to the university and took the degree of Doctor of Divinity at the end of 1512. The solemn oath he had to pronounce on that occasion, “to devote his whole life to study, and faithfully expound and defend the Holy Scripture,” was to him the seal of his mission. He began his biblical teaching by attacking scholasticism, at that time called Aristotelianism. He showed that the Bible was a deeper philosophy. His contemporaries praised the clearness of his doctrine. Christ’s self-devoted life and death was its center; God’s eternal love to mankind, and the sure triumph of Faith, were his texts.[E] SALE OF PAPAL INDULGENCES—LUTHER’S RESISTANCE. In the year 1517, the pope, Leo X., famous both for his luxurious habits and his love of art, found that his income was not sufficient for his expenses, and determined to increase it by issuing a series of absolutions for all forms of crime, even perjury, bigamy and murder. The cost of pardon was graduated according to the nature of the sin. Albert, Archbishop of Mayence, bought the right of selling absolutions in Germany, and appointed as his agent a Dominican monk of the name of Tetzel. The latter began traveling through the country like a peddler, publicly offering for sale the pardon of the Roman church for all varieties of crime. In some places he did an excellent business, since many evil men also purchased pardons in advance for the crimes they _intended_ to commit; in other districts Tetzel only stirred up the abhorrence of the people, and increased their burning desire to have such enormities suppressed.