Final answer:
The quote is from Shakespeare's play Macbeth and portrays the protagonist's contemplation of the consequences of his violent and murderous actions.
Step-by-step explanation:
Analysis of the quote:
The quote you provided is from Shakespeare's play Macbeth. It is spoken by Macbeth himself as he contemplates the consequences of committing a heinous act, namely the assassination of King Duncan. The phrase 'with blade, with bloody blameful blade' is a powerful depiction of the weapon Macbeth uses, emphasizing the violence and bloodshed that accompanies his decision to murder the king. The phrase also reflects Macbeth's bravery or courage in carrying out this gruesome act.
Reasons for including the quote:
Shakespeare includes this quote in Macbeth to convey the internal conflict and moral dilemma faced by the protagonist. It highlights the psychological turmoil Macbeth experiences as he grapples with his ambition and the consequences of his actions. The use of vivid and evocative language helps to create a sense of tension and drama, drawing attention to the central theme of guilt and the destructive nature of unchecked ambition.