Final answer:
The provided dialogue excerpts involve characters grappling with themes of vengeance and justice, with one character confronting moral ambiguity and another faced with an accusation and a relationship denial.
Step-by-step explanation:
The statements provided are excerpts of dialogue, indicating that the central theme revolves around the concepts of vengeance and justice within the context of a literary narrative. In the first excerpt, the character insists on forgetting the murders for a second, suggesting that the discussion should move away from the topic of killing.
The second excerpt sets a contrast between the notions of vengeance and justice; mentioning that the character had apparently promised to forego vengeance but now talks about obtaining justice, which introduces a moral ambiguity.
In the third excerpt, one character accuses the other of guilt, followed by a conversation that implies a refusal to acknowledge a relationship with a poor girl, adding another layer of complexity to the characters' moral standings.