Julia and Winston are obviously most alike in their rebellion against the Party. They have no wish to remain slaves to Party doctrine and repression. The very fact of their having a secret love affair goes against all the Party teachings, as the Party aims to suppress such emotions as love between individuals. As Winston reflects on the first time he and Julia have sex: ‘It was a political act’.
Winston and Julia are also alike as they are both courageous and both are fully aware that in the end they will be captured by the Party and killed; they are under no illusions whatsoever on that score. It is also true, though, that they aren’t quite courageous enough to state their rebellion openly, but stage it covertly while maintaining an outward show of conformity: Julia, for instance, is involved in the Party Anti-Sex League while Winston gets on with his daily clerical work and keeps his journal containing his real thoughts quite hidden.
However, there are also notable differences between Winston and Julia – physical differences, for a start. Julia is much younger than Winston and very attractive, while Winston is verging on middle age and unimpressive in appearance. But the most important and fundamental difference between them is that Winston is intellectual while Julia is instinctual. Winston rebels against the Party because of his ideals of how society should be, while Julia rebels because the Party puts a check on her physical needs, desires and appetites. She wants to be free to express her sexuality, which the Party strictly forbids, and apparently she’s had several affairs with Party members before Winston. She also wants things like make-up and chocolates which in the world of the Party are unheard-of luxuries. Winston is not concerned with physical comforts; he prefers to spend his time reading and thinking. This essential difference between them is aptly illustrated when Julia manages to fall asleep while Winston is reading Emmanuel Goldstein’s book to her.