The _Ninety-five Theses_ had a circulation which was, for the time, unprecedented. They were known throughout Germany in a little over a fortnight; they were read over Western Europe within four weeks “as if they had been circulated by angelic messengers,” says Myconius enthusiastically. Luther was staggered at the way they were received; he said that he had not meant to determine, but to debate. The controversy they awakened increased their popularity. In the _Theses_, and especially in the _Resolutiones_, Luther had practically discarded all the practices which the Pope and the Roman Curia had introduced in the matter of Indulgences from the beginning of the thirteenth century, and all the ingenious explanations Scholastic theologians had brought forward to justify these practices. The readiest way to refute him was to assert the power of the Roman Bishop; and this was the line taken by his critics. Their arguments amount to this: the power to issue an Indulgence is simply a particular instance of the power of papal jurisdiction, and Indulgences are simply what the Pope proclaims them to be. Therefore, to attack Indulgences is to attack the power of the Pope, and that cannot be tolerated. The Roman Church is virtually the Universal Church, and the Pope is practically the Roman Church. Hence, as the representative of the Roman Church, which in turn represents the Church Universal, the Pope, when he acts officially, cannot err. Official decisions are given in actions as well as in words, custom has the force of law. Therefore, whoever objects to such a long-established system as Indulgences is a heretic, and does not deserve to be heard.(165) But the argument which appealed most powerfully to the Roman Curia was the fact that the sales of the _Papal Tickets_ had been declining since the publication of the _Theses_. Indulgences were the source of an enormous revenue, and anything which checked their sale would cause financial embarrassment. Pope Leo X. in his “enjoyment of the Papacy” lived lavishly. He had a huge income, much greater than that of any European monarch, but he lived beyond it. His income amounted to between four and five hundred thousand ducats; but he had spent seven hundred thousand on his war about the Duchy of Urbino; the magnificent reception of his brother Julian and his bride in Rome (1514) had cost him fifty thousand ducats; and he had spent over three hundred thousand on the marriage of his nephew Lorenzo (1518). Voices had been heard in Rome as well as in Germany protesting against this extravagance. The Pope was in desperate need of money. It is scarcely to be wondered that Luther was summoned to Rome (summons dated July 1518, and received by Luther on August 7th) to answer for his attack on the Indulgence system. To have obeyed would have meant death.