The answer to your question is: Some strong examples that show why the subject is important to the narrator. Hope I have helped.
Well, it represents their key of achieving their long term dreams. It can also symbolize Walters greed and the destruction to his own original beliefs.
“Has he brought any papers home?” asked Donna.
Shakespeare makes Macbeth seem very strong and loyal to the king. Those adds to the drama because Macbeth quickly turns against the king by killing him.