Luther accordingly was sent to Augsburg. It was an anxious time for himself and his friends when he had to leave for that distant place, where the Elector, with all his care, could not employ any physical means for his protection, and to stand accused as a heretic before that papal legate who, from his own theological principles, was bound to condemn him. "My thoughts on the way," said Luther afterward, "were now I must die; and I often lamented the disgrace I should be to my dear parents."
He went thither in humble garb and manner. He made his way on foot till within a short distance of Augsburg, when illness and weakness overcame him, and he was forced to proceed by carriage. Another younger monk of Wittenberg accompanied him, his pupil Leonard Baier. At Nuremberg he was joined by his friend Link, who held an appointment there as preacher. From him he borrowed a monk's frock, his own being too bad for Augsburg. He arrived here on October 7th.
The surroundings he now entered, and the proceedings impending over him, were wholly novel and unaccustomed. But he met with men who received him with kindness and consideration; several of them were gentlemen of Augsburg favorable to him, especially the respected patrician, Dr. Conrad Peutinger, and two counsellors of the Elector. They advised him to behave with prudence, and to observe carefully all the necessary forms to which as yet he was a stranger.
Luther at once announced his arrival to Cajetan, who was anxious to receive him without delay. His friends, however, kept him back until they had obtained a written safe-conduct from the Emperor, who was then hunting in the environs. In the mean time a distinguished friend of Cajetan, one Urbanus of Serralonga, tried to persuade him, in a flippant and, as Luther thought, a downright Italian manner, to come forward and simply pronounce six letters—"Revoco" ("I retract"). Urbanus asked him with a smile if he thought his sovereign would risk his country for his sake. "God forbid!" answered Luther. "Where then do you mean to take refuge?" he went on to ask him. "Under heaven," was Luther's reply.
On October 11th Luther received the letter of safe-conduct, and the next day he appeared before Cajetan. Humbly, as he had been advised, he prostrated himself before the representative of the Pope, who received him graciously and bade him rise.
The Cardinal addressed him civilly and with a courtesy Luther was not accustomed to meet with from his opponents; but he immediately demanded him, in the name and by command of the Pope, to retract his errors, and promise in future to abstain from them and from everything that might disturb the peace of the Church. He pointed out, in particular, two errors in his theses; namely, that the Church's treasure of indulgences did not consist of the merits of Christ, and that faith on the part of the recipient was necessary for the efficacy of the sacrament. With respect to the second point, the religious principles upon which Luther based his doctrine were altogether strange and unintelligible to the scholastic standpoint of Cajetan; mere tittering and laughter followed Luther's observations, and he was required to retract this thesis unconditionally. The first point settled the question of papal authority. The Cardinal-legate could not believe that Luther would venture to resist a papal bull, and thought he had probably not read it. He read him a vigorous lecture of his own on the paramount authority of the pope over council, Church, and Scripture. As to any argument, however, about the theses to be retracted, Cajetan refused from the first to engage in it, and undoubtedly he went further in that direction than he originally desired or intended. His sole wish was, as he said, to give fatherly correction, and with fatherly friendliness to arrange the matter. But in reality, says Luther, it was a blunt, naked, unyielding display of power. Luther could only beg from him further time for consideration.
Luther's friends at Augsburg, and Staupitz, who had just arrived there, now attempted to divert the course of these proceedings, to collect other decisions of importance bearing on the subject, and to give him the opportunity of a public vindication. Accompanied therefore by several jurists friendly to his cause, and by a notary and Staupitz, he laid before the legate next day a short and formal statement of defence. He could not retract unless convicted of error, and to all that he had said he must hold as being Catholic truth. Nevertheless he was only human, and therefore fallible, and he was willing to submit to a legitimate decision of the Church. He offered, at the same time, publicly to justify his theses, and he was ready to hear the judgment of the learned doctors of Basel, Freiburg, Louvain, and even Paris upon them. Cajetan with a smile dismissed Luther and his proposals, but consented to receive a more detailed reply in writing to the principal points discussed the previous day.
On the morrow, October 14th, Luther brought his reply to the legate. But in this document also he insisted clearly and resolutely from the commencement on those very principles which his opponents regarded as destructive of all ecclesiastical authority and of the foundations of Christian belief. Still he entreated Cajetan to intercede with Leo X, that the latter might not harshly thrust out into darkness his soul, which was seeking for the light. But he repeated that he could do nothing against his conscience: one must obey God rather than man, and he had the fullest confidence that he had Scripture on his side. Cajetan, to whom he delivered this reply in person, once more tried to persuade him. They fell into a lively and vehement argument; but Cajetan cut it short with the exclamation, "Revoke." In the event of Luther not revoking or submitting to judgment at Rome, he threatened him and all his friends with excommunication, and whatever place he might go to with an interdict; he had a mandate from the Pope to that effect already in his hands. He then dismissed him with the words, "Revoke, or do not come again into my presence." Nevertheless he spoke in quite a friendly manner after this to Staupitz, urging him to try his best to convert Luther, whom he wished well. Luther, however, wrote the same day to his friend Spalatin, who was with the Elector, and to his friends at Wittenberg, telling them he had refused to yield. Luther added further that an appeal would be drawn up for him in the form best fitted to the occasion. He further hinted to his Wittenberg friends at the possibility of his having to go elsewhere in exile; indeed, his friends already thought of taking him to Paris, where the university still rejected the doctrine of papal absolutism. He concluded this letter by saying that he refused to become a heretic by denying that which had made him a Christian; sooner than do that, he would be burned, exiled, or cursed. The appeal, of which Luther here spoke, was "from the Pope ill-informed to the same when better informed." On October 16th he submitted it, formally prepared, to a public notary.
Luther even addressed, on October 17th, a letter to Cajetan, conceding to him the utmost he thought possible. Moved, as he said, by the persuasions of his dear father Staupitz and his brother Link, he offered to let the whole question of indulgences rest, if only that which drove him to this tragedy were put a stop to; he confessed also to having been too violent and disrespectful in dispute. In after-years he said to his friends, when referring to this concession, that God had never allowed him to sink deeper than when he had yielded so much. The next day, however, he gave notice of his appeal to the legate, and told him he did not wish longer to waste his time in Augsburg. To this letter he received no answer.
Luther waited, however, till the 20th. He and his Augsburg patrons began to suspect whether measures had not already been taken to detain him. They therefore had a small gate in the city wall opened in the night, and sent with him an escort well acquainted with the road. Thus he hastened away, as he himself described it, on a hard-trotting hack, in a simple monk's frock, with only knee-breeches, without boots or spurs, and unarmed. On the first day he rode eight miles, as far as the little town of Monheim. As he entered in the evening an inn and dismounted in the stable, he was unable to stand from fatigue and fell down instantly among the straw. He travelled thus on horseback to Wittenberg, where he arrived, well and joyful, on the anniversary of his ninety-five theses. He had heard on the way of the Pope's brief to Cajetan, but he refused to think it could be genuine. His appeal, meanwhile, was delivered to the Cardinal at Augsburg, who had it posted by his notary on the doors of the cathedral.