In George Orwell's 1984, did O'Brien have any other intention apart from gaining Winston's trust by giving him "The Book"?
When he meets Winston Smith O'Brien obliquely refers to a member of the Outer Party--the philologist Syme--now officially an unperson. This small act of unorthodoxy emboldens Winston to visit O'Brien at his luxurious apartment to pick up a newer edition of the Newspeak Dictionary. Accompanied there by Julia O'Brien reaveals that he is a member of the shadowy Brotherhood, the purpose of which is to overthrow the Party at some ideterminate future date; to the co-conspirators O'Brien gives "The Book"--both an explanation of 1984's totalitarian society and a manifesto of liberation from it. Of course, the whole plan is a ruse to flush out a disloyal member of the Party. But is that the sole reason O'Brien has for giving Winston "The Book"? From the beginning to the end of the novel Winston depicts the Party as a mystery wrapped in an enigma, doing what it does for its own inscrutable reasons in the cause of doublethink. And O'Brien personifies this. He is a fearsome believer in the gospel of power for its own sake and at the same time a kindly grandfather, a symbol of Big Brother, deeply concerned about the sanity of his favoured patient, Winston. After his arrest, when Winston asks if the Party had also captured him, O'Brien replies that "they got me long ago". This mysterious assertion seems to imply that the strategem of "The Book" is not simply to capture Winston, the thought criminal, but to 'cure' him of his insane attachment to a reality outside the Party's control.