"He obeyed the Party, but he sill hated the Party. In the old days he had hidden a heretical mind beneath an appearance of conformity. Now he has retreated a step further: in the mind he had surrendered, but he had hoped to keep the inner heart inviolate. He knew that he was in the wrong, but he preferred to be in the wrong" (231).
What you can see here is Winston mentally broken. The amount of torture the Party has done to him has reached a level were he cant function like his old self. He has given into the idea that the Party is great that Big Brother is what matters, what he needs to love. He is not to love or obey no one else than Big Brother. That any idea for rebellion should be eliminated from his mind. Even though they broke Winston mentally in his heart he still beliefs whats right. That the Party is bad and so is Big Brother that a change has to happen. Winston finally obeyed the party but just outwardly his spirit is not yet broken. He still beliefs.
Do it to Julia! Do it to Julia! Not me! Julia! I don't care what you do to her. Tear her face off, strip her to the bones. Not me! Julia! Not me!" (236)

This quote is really strong because it shows how much Winston is really broken. For him to sell out Julia like that reminds me of that one guy who didn't want to be taken to Room 101 that he was screaming to so anything but take him to Room 101. He preferred have his family killed right in front of him. Even though in this case Winston is being torture with his worse nightmare, rats. Rats in 1984 I represent them in two ways. Greed/theft: when thinking back to that time when Winston stole chocolate and got shared, Phobia/Petrify: During a scene in which Julia and Winston are together he tells her that he is afraid of rats. It doesn't clearly state why Winston fear them maybe something happened to him when he was younger. Thinking about it maybe Julia betrayed Winston by telling O'Brien about it.