In their moments together winston thinks he understands the force that will destroy big brother. what is that force?

Big Brother is known as the state of mind based on belief in total obedience to someone else's authority and the administration of that way of thinking through the oppression of one's subordinates.

During his encounter with Julia, there is a brief episode in which he believes to understand the force that will destroy Big Brother. This force is none other than Love and Loyalty. These concepts can be considered as the antithesis of oppression when you compare the actions a leader may apply over his or her subordinates.