been a feature of the British Secret Service. "I wanted to present the Service unromantically as a way of life, men going daily to their office to earn their pensions." Writing in his 70s, Greene drew on his own experience in MI6 and explored the moral ambiguities raised by his old boss, legendary Soviet double agent Kim Philby, although Greene stated that Castle, the main character in the novel, was not based on Philby. Another theme Greene explored was what he considered the hypocrisy of the West's relations with South Africa under apartheid. He thought that even though the West publicly opposed apartheid, "they simply could not let South Africa succumb to black power and Communism" (from the Introduction to the 1982 edition of The Human Factor). References 1992, The Human Factor, Everyman's Library, Novels by Graham Greene 1978 British novels British thriller novels British spy novels British novels adapted into films The Bodley Head books