Final answer:
In Act V, Scene 5 of Macbeth, Macbeth reveals his imperviousness to fear and horror, highlighting the theme of madness and ambition.
Step-by-step explanation:
In Act V, Scene 5 of the play Macbeth, Macbeth reveals that he has grown impervious to fear and horror. This underscores the play's theme of madness and ambition. Throughout the play, Macbeth becomes increasingly consumed by his ambition for power, which leads him to commit heinous acts and lose touch with reality.