Yes, the narrator is mad.Madness is the state of being mentally ill.He is mad because he says he could hear everything in heaven and in Earth, even things in hell. This is proven on page 1 when it states”I heard all things in heaven and in Earth.”This shows that he was going crazy. The next reason he is mad is because he stalked the old man. This is shown on page 2 when it states “It took me a whole hour to place my whole head within the opening so far that I could see him as he lay upon his bed.” This shows that he was so mad that he took an hour to place his head through a door just to look at the old man.My final reason for why he is mad is when he killed the old man but could still hear the heartbeat.This example can be found on page 4
