 In the camp he learned German by talking with the guards, and he designed the sets for the prisoners' productions of "Macbeth" and other plays, making highly imaginative use of the limited resources available to him.The experience of designing in a prison camp seems to have liberated his imagination.He later wrote of his teenage years that "claustrophobic family life and the cocoon of public schools at that time" had made him what an acquaintance described as "a nice English schoolboy."