Mr. O'Brien and Winston are the principals starrings of the novel.
Textually O'Brien tells Winston: The first thing you must realize is that power is collective. The individual only has power in so far as he ceases to be an individual..alone...free.. the human being is always defeated.
That is the first thing from O'Brien to Winston.
A Theme is a Message the the Author wants to get across to his readers
A Central Idea is a element in a story that ties together the imformation
I Hope the Helps
√ Dante√
A reader might feel like they can relate to the situation that the writer is going through. They understand and therefor can relate emotionally to the situation.