The young man shivered. He rolled the stock themes of fantasy over in his mind: cars and stockbrokers and commuters, housewives and police, agony columns and commercials for soap, income tax and cheap restaurants, magazines and credit cards and streetlights and computers. . . 'It is escapism, true,' he said, aloud. 'But is not the highest impulse in mankind the urge toward freedom, the drive to escape?