When the Hermit was a lad, and lived in the town, the crenellations of the walls had been square-topped, and a Guelf lord had flown his standard from the keep. Then one day a steel-coloured line of men-at-arms rode across the valley, wound up the hill and battered in the gates. Stones and Greek fire rained from the ramparts, shields clashed in the streets, blade sprang at blade in passages and stairways.