One reason for Winston’s rebellion, and eventual downfall, is his sense of fatalism—his intense (though entirely justified) paranoia about the Party and his overriding belief that the Party will eventually catch and punish him. As soon as he writes “DOWN WITH BIG BROTHER” in his diary, Winston is positive that the Thought Police will quickly capture him for committing a thoughtcrime. Thinking that he is helpless to evade his doom, Winston allows himself to take unnecessary risks, such as trusting O’Brien and renting the room above Mr. Charrington’s shop. Deep down, he knows that these risks will increase his chances of being caught by the Party; he even admits this to O’Brien while in prison. But because he believes that he will be caught no matter what he does, he convinces himself that he must continue to rebel. Winston lives in a world in which legitimate optimism is an impossibility; lacking any real hope, he gives himself false hope, fully aware that he is doing so.