To this Luther replied he would give an answer "with neither horns nor teeth." Unless he were refuted by proofs from Scripture, or by evident reason, his conscience bound him to adhere to the Word of God which he had quoted in his defence. Popes and councils, as was clear, had often erred and contradicted themselves. He could not, therefore, and he would not, retreat anything, for it was neither safe nor honest to act against one's conscience.
Eck exchanged only a few more words with him in reply to his assertion that councils had erred. "You cannot prove that," said Eck. "I will pledge myself to do it," was Luther's answer. Pressed and threatened by his enemy, he concluded with the famous words: "Here I stand, I can do no otherwise. God help me. Amen."
The Emperor reluctantly broke up the diet at about eight o'clock in the evening. Darkness had meanwhile come on; the hall was lighted with torches, and the audience were in a state of general excitement and agitation. Luther was led out; whereupon an uproar arose among the Germans, who thought that he had been taken prisoner. As he stood among the heated crowd, Duke Erich of Brunswick sent him a silver tankard of Eimbeck beer, after having first drunk of it himself.
On reaching his lodging, "Luther," to use the words of a Nuremberger present there, "stretched out his hands, and with a joyful countenance exclaimed, 'I am through! I am through!'" Spalatin says: "He entered the lodging so courageous, comforted, and joyful in the Lord that he said before others and myself, 'if he had a thousand heads, he would rather have them all cut off than make one recantation.'" He relates also how the elector Frederick, before his supper, sent for him from Luther's dwelling, took him into his room and expressed to him his astonishment and delight at Luther's speech. "How excellently did Father Martin speak both in Latin and German before the Emperor and the orders! He was bold enough, if not too much so." The Emperor, on the contrary, had been so little impressed by Luther's personality, and had understood so little of it, that he fancied the writings ascribed to him must have been written by someone else. Many of his Spaniards had pursued Luther, as he left the diet, with hisses and shouts of scorn.