What Italy contained of ancient codices soon saw the light. The visit of Poggio Bracciolini to Constance (1414) opened up for Italian scholars the stores that lay neglected in transalpine monasteries. Poggio's office of Apostolic Secretary obliged him to attend the Council of Constance for the purpose of framing reports and composing diplomatic documents. At the same time he had ample leisure on his hands, and this he spent in exploring the libraries of Swiss and Suabian convents. The treasures he unearthed at Reichenau, Weingarten, and above all S. Gallen, restored to Italy many lost masterpieces of Latin literature, and supplied students with full texts of authors who had hitherto been known in mutilated copies. The account he gave of his visit to S. Gallen in a Latin letter to a friend is justly celebrated.[96] After describing the wretched state in which the 'Institutions' of Quintilian had previously existed,[97] he proceeds as follows:--'I verily believe that, if we had not come to the rescue, he [Quintilian] must speedily have perished; for it cannot be imagined that a man magnificent, polished, elegant, urbane, and witty could much longer have endured the squalor of the prison-house in which I found him, the savagery of his jailers, the forlorn filth of the place. He was indeed right sad to look upon, and ragged, like a condemned criminal, with rough beard and matted hair, protesting by his countenance and garb against the injustice of his sentence. He seemed to be stretching out his hands, calling upon the Romans, demanding to be saved from so unmerited a doom. Hard indeed it was for him to bear, that he who had preserved the lives of many by his eloquence and aid, should now find no redresser of his wrongs, no saviour from the unjust punishment awaiting him. But as it often happens, to quote Terence, that what you dare not wish for comes to you by chance, so a good fortune for him, but far more for ourselves, led us, while wasting our time in idleness at Constance, to take a fancy for visiting the place where he was held in prison. The monastery of S. Gallen lies at the distance of some twenty miles from that city. Thither, then, partly for the sake of amusement and partly of finding books, whereof we heard there was a large collection in the convent, we directed our steps. In the middle of a well-stocked library, too large to catalogue at present, we discovered Quintilian, safe as yet and sound, though covered with dust and filthy with neglect and age. The books, you must know, were not housed according to their worth, but were lying in a most foul and obscure dungeon at the very bottom of a tower, a place into which condemned criminals would hardly have been thrust; and I am firmly persuaded that if anyone would but explore those _ergastula_ of the barbarians wherein they incarcerate such men, we should meet with like good fortune in the case of many whose funeral orations have long ago been pronounced.