From what i think and see in the cover of Fahrenheit 451, i think the fireman Guy Montag burns stuff for a living but then finds a turning point that he didn't think would ever occur. I think the main message or theme of the story will be, maybe you thought things were just going to be the same from there on, things wouldn't turn away because you say to yourself,"well maybe this is all it is.... all its gonna be." You never know what will come your way in the future.