The themes of this story include something very rebellious, as Winston and Julia live their lives in exactly the opposite way that the Party wants them to. However, it also contains an overtone of inevitability and the acceptance of one's fate, as they both know that it isn't sustainable, and won't accomplish much. This inevitability is proven as their rebellious spirits are finally extinguished by the large overtones of oppression and control that are also in the story.
I chose this sculpture because, as mentioned, although Winston and Julia continue to rebel against everything they know, Winston still holds many fears. In a way you would not quite expect from his actions, he seems deeply afraid of what is to come, in his lifetime and beyond.