The events now to be related, which took place in 1315, Arnold learned from the lips of an aged monk in the Engelberg monastery, who had been a participant in them. This still vigorous old man, Father Vincentius, was known throughout the valley as the “one-eyed,” for he had lost his left eye. He was not a man of great erudition, but having had experience in the art of healing he knew how to compound medicines for the sick, and to treat wounds and broken limbs. He was reverenced and loved by the pastoral folk of the valley, for many of them owed their good health and their lives to his skill. As he was always ready, by day or by night, in good or in bad weather, to visit sick-beds, he was looked upon as an angel of mercy. Father Vincentius had been wild and reckless in his youth, but in his later years he returned to the Church and consecrated himself as a Benedictine monk to the service of suffering humanity. Arnold was very fond of the monk, and his devotion was returned by Father Vincentius, who occasionally took the lad with him on his visits to the sick. Upon one of these visits, which took them to the end of the valley, the monk told him about the war which Leopold waged against the three cantons.