The main theme of 'Fahrenheit 451 Part 1' revolves around censorship and the oppressive power of an authoritarian society that seeks to control information and suppress independent thought.

In 'Fahrenheit 451 Part 1', key characters include Guy Montag, a firefighter who begins to question his role in burning books, and Clarisse McClellan, a free-spirited young woman who influences Montag's awakening.

Ray Bradbury uses symbolism extensively in 'Fahrenheit 451 Part 1', with fire representing both destruction and enlightenment, and the mechanical hound symbolizing the oppressive control of the state.

The title 'Fahrenheit 451' refers to the temperature at which book paper catches fire and burns, symbolizing the societal destruction of free thought in Part 1 of the novel.

In 'Fahrenheit 451 Part 1', Clarisse McClellan plays a pivotal role as she challenges Montag's perceptions and encourages him to question the societal norms that dictate his role as a fireman.