But he was careful. He didn't make a simple remark without rehearsing it beforehand. And he continually removed the expression from his face lest it be the wrong one, and give him away. He also avoided any strong light, such as the lamp on the kitchen table. Sometimes a weakness overcame him, his legs were unstrung, and he had to find some place to sit down, but this was easy enough to disguise. It was his voice that gave him the most trouble. It sounded false to him and not like his voice at all.