Fire is an interesting symbol in Fahrenheit 451 because it symbolizes two different things. Through the firemen, who burn books and wear the number "451" on their helmets, fire symbolizes destruction. (451°F is the temperature at which paper and books burn.) Yet at the same time, Clarisse reminds Montag of candle-light, and so fire, when controlled, symbolizes the flickering of self-awareness and knowledge.
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