Be innocent of the knowledge, dearest chuck,
Till thou applaud the deed.

– William Shakespeare

Macbeth, Act 3, Scene 2. Macbeth tells his wife that she is better off not knowing what he is planning for Banquo and his son until she can celebrate the deed. In the same sentence that he displays affection for his wife by calling her “dearest chuck,” Macbeth is referring to the murders he has planned of his friend Banquo and Fleance. Macbeth’s coolness reflects his brutalized and insensitive nature as he progressively grows more tyrannical and cruel. He knows that he is becoming evil, but wishes Lady Macbeth to remain “innocent” of the crime his hired thugs have been sent to commit.