Quote further evidence of Macbeth’s state of mind.What statement does Macbeth make that suggests Lady Macbeth is unaware of Macbeth’s plan to kill Banquo and Fleance?What does Macbeth’s statement indicate about their relationship as co-conspirators and about Lady Macbeth’s influence on Macbeth?

Evidence of Macbeth’s state of mind can be found in Act 3, Scene 1, where he says, "To be thus is nothing, but to be safely thus." This quote shows his paranoia and fear of losing the power he has gained. He is constantly worried about threats to his throne, which is a clear indication of his deteriorating mental state.

The statement that suggests Lady Macbeth is unaware of Macbeth’s plan to kill Banquo and Fleance is when he says, "Be innocent of the knowledge, dearest chuck, till thou applaud the deed" (Act 3, Scene 2). This means that he wants her to remain ignorant of his plans until they have been successfully carried out.

Macbeth’s statement indicates a shift in their relationship as co-conspirators. Initially, Lady Macbeth was the driving force behind the murder of King Duncan, but now Macbeth is taking the lead and keeping secrets from her. This suggests that he is becoming more independent and less influenced by Lady Macbeth. It also shows a decline in their relationship as they are no longer sharing important plans and decisions.