“In a starless May night the town slept and the river flowed quietly through shadow. Over the empty courts of the university loomed the chapel tower, full of silent bells. A young man was climbing over the ten-foot iron gates of the chapel quadrangle. Clinging to the ironwork he dropped down inside, and crossed the courtyard to the doors of the chapel. He took out of his coat pocket a large sheet of paper, and unfolded it; fished around and brought out a nail; stooped and took off one of his shoes.”