Philip thought that he could easily seize a large part of Normandy and annex it to his dominions while John was engaged in defending himself against Arthur in England. Arthur, who was at this time only about fourteen years old, was, of course, too young to exercise any judgment in respect to such questions as these, so he readily agreed to what Philip proposed, and very soon afterward Philip assembled an army, and, placing Arthur nominally at the head of it, he sent him forth into Normandy to commence the war upon John. Of course, Arthur was only nominally at the head of the army. There were old and experienced generals who really had the command, though they did every thing in Arthur's name. A long war ensued, but in the end Arthur's army was defeated, and Arthur himself was made prisoner. John and his savage soldiery got possession of the town where Arthur was in the night, and they seized the poor boy in his bed. The soldiers took him away with a troop of horse, and shut him up in a dungeon in a famous castle called the castle of Falaise. You will see the position of Falaise on the map. After a while John determined to visit Arthur in his prison, in order to see if he could not make some terms with him. To accomplish his purpose more effectually, he waited some time, till he thought the poor boy's spirit must be broken down by his confinement and his sufferings. His design was probably to make terms with him by offering him his liberty, and perhaps some rich estate, if he would only give up his claims to the crown and acknowledge John as king; but he found that Arthur, young as he was, and helpless as was his condition in his lonely dungeon, remained in heart entirely unsubdued. All that he would say in answer to John's proposal was, "Give me back my kingdom." At length, John, finding that he could not induce the prince to give up his claims, went away in a rage, and determined to kill him. If Arthur were dead, there would then, he thought, be no farther difficulty, for all acknowledged that after Arthur he himself was the next heir. There was another way, too, by which John might become the rightful heir to the crown. It was a prevalent idea in those days that no person who was blind, or deaf, or dumb could inherit a crown. To blind young Arthur, then, would be as effectual a means of extinguishing his claims as to kill him, and John accordingly determined to destroy the young prince's right to the succession by putting out his eyes; so he sent two executioners to perform this cruel deed upon the captive in his dungeon.