Warnings and threats innumerable came to Hutten, from enemies who feared and hated, from friends who were fearful and trembling; but he never flinched: He had "dared it." The bull of excommunication which came from the Pope frightened him no more than it did Luther. But at last he was compelled to retire from the cities, and he took up his abode in the Castle of Ebernburg, with Franz von Sickingen. Franz von Sickingen was one of the great nobles of Germany, and he ruled over a region in the bend of the Rhine between Worms and Bingen. His was one of the bravest characters of that time. A knight of the highest order, he became a disciple of Hutten and Luther, and on his help was the greatest reliance placed by the friends of the growing reform. His strong Castle of Ebernburg, on the hills above Bingen, was the refuge of all who were persecuted by the authorities. The "Inn of Righteousness" ("_Herberge von Gerechtigkeit_"), the Ebernburg was called by Hutten. The Humanists who had stood with Hutten in the struggle between Reuchlin and Pfefferkorn saw with growing concern the gradual transfer of the field of battle from questions of literature to questions of religion. Reuchlin, growing old and weak, wrote a letter, disavowing any sympathy with the new uprisings against the time-honored authority of the Church. This letter came into Hutten's hands, and, with all his reverence for his old friend and master, he could not keep silence. "Eternal Gods!" he writes. "What do I see? Have you sunk so deep in weakness and fear, O Reuchlin! that you cannot endure blame even for those who have fought for you in time of danger? Through such shameful subservience do you hope to reconcile those to whom, if you were a man, you would never give a friendly greeting, so badly have they treated you? Yet reconcile them; and if there is no other way, go to Rome and kiss the feet of Leo, and then write against us. Yet you shall see that, against your will, and against the will of all the godless courtesans, we shall shake off the shameful yoke, and free ourselves from slavery. I am ashamed that I have written so much for you--have done so much for you,--since when it comes to action you have made such a miserable exit from the ranks. From me shall you know henceforth that whether you fight in Luther's cause or throw yourself at the feet of the Bishop of Rome, I shall never trust you more." The poor old man, thus harassed on all sides, found no longer any rest or comfort in his studies. Worn-out in body, and broken in spirit, he soon died.