In "Fahrenheit 451" how do the different characters question his beliefs? How does he answer their questions?
Clarisse questions his beliefs through her simple existence. She is so different from anyone he has known before, especially Mildred, that he can't help but wonder about life when he is around her. Her direct questions also throw him for a loop: "Are you happy?" (Montag, later, thinks to himself, "Of course I'm happy) and "You're not in love with anyone!" (Montag responds, "I am, very much in love!".
Mildred questions him about his suspicions regarding her suicide. She asks, "What would I want to go and do a silly thing like that for?" He responds by saying he doesn't know, and doesn't argue with her denial. But he ponders it, wondering. She also questions his reading of books, and his seeming turn to the "dark side"; she is unhappy and resisitant. He drags her along with him for a while, then gives up.
Mrs. Blake, the woman in the fire, makes Montag question the entire notion of book burning, and of his job. Her refusal to leave the house directly impacts him; he is so upset that he stays home from work the next day.
Faber questions everything about Montag's world; Montag responds positively. Faber becomes the voice in his head directing all else, and Montag listens. From there he rejects Mildred's friends, tries to play cool with Beatty-to no avail, and eventually completely surrenders his old world and beliefs.