This made him remember about his wife, Katharine, who left his life 11 years ago.
Now he thinks and imagines...
He hopes the proles would unite and rebel against the government because they even want to control everything. Even their love lives! He realizes that he wrote this diary disappointed in the control they have over them, and feels like O'Brien is the only one who can understand him.
He also remembered a time when he sat with three men at a cafe and they were arrested. But he had seen them at his office and knew that they used to be part of the party and they were forced to admit no crimes they did not do.