Practical joking was a favourite sport with him, but only indulged in when harm could befall no one, and incident offered some funny situation. To hurt one willingly was, I think, impossible in Wagner. He was ever kind and would never have attempted anything that might result in real pain.
His superabundance of animal spirits, well-seconded by his active frame, led him often into hairbrained escapades which threatened to terminate fatally. But his fearless intrepidity was tempered and dominated by a strong self-reliance, which always came to the rescue at the critical moment.
On one occasion when the boys of the Kreuzschule were assembled in class for daily work, an unexpected holiday was announced for that day. A chance like that was a rare thing at schools on the continent. The boys, wild with excitement, rushed pell mell from the building, and showed their delight in the usual tumultuous manner of school-boys freed from restraint. Caps were thrown in the air, when Wagner, seizing that of one of his companions, threw it with an unusual effort on to the roof of the school-house, a feat loudly applauded by the rest of the scholars. But there was one dissentient, the unlucky boy whose cap had been thus ruthlessly snatched. He burst into tears. Wagner could never bear to see any one cry, and with that prompt decision so characteristic of him at all periods of his life, decided at once to mount the roof for the cap. He re-entered the school-house, rushed up the stairs to the cock-loft, climbed out on the roof through a ventilator, and gazed down on the applauding boys. He then set himself to crawl along the steep incline towards the cap. The boys ceased cheering at the sight and drew back in fear and terror. Some hurriedly ran to the “custodes.” A ladder was brought and carried up stairs to the loft, the boys eagerly crowding behind. Meanwhile Wagner had secured the cap, safely returned to the opening, and slid back into the dark loft just in time to hear excited talking on the stairs. He hid himself in a corner behind some boxes, waited for the placing of the ladder, and “custodes” ascending it, when he came from his hiding-place, and in an innocent tone inquired what they were looking for, a bird, perhaps? “Ja, ein Galenvogel” (yes, a gallows bird), was the angry answer of the infuriated “custodes,” who, after all, were glad to see the boy safe, their general favourite. He did not go unrebuked by the masters this time, and was threatened with severe chastisement the next time he ventured on such a foolhardy expedition.