Macbeth Act 1 - Macbeth acknowledges that he has no motivation to kill Duncan and take the throne other than his ambition which will lead him down a bad path
Lady Macbeth Act 1 - Lady Macbeth believes that Macbeth's Ambition is not enough and uses words such as attend, suggesting he needs to have wickedness to kill Duncan (Illness). This hints Macbeth is mentally weak
Macbeth Act 5 - Macbeth now understands the consequence for his actions, stating that life is meaningless as his ignorance (idiot) and ambition has robbed him and his wife of everything valuable in life
Lady Macbeth Act 5 - Lady Macbeth is haunted by the idea that she cannot wash Duncan's blood of her hands due to her ambition. She carries a candle which metaphorically represents forgiveness before killing herself