in the story Farenheit 451 what is symbolic about the title of part one "The Hearth and the Salamander?

"The hearth, or fireplace, is a traditional symbol of the home, and the salamander is one of the official symbols of the firemen, as well as what they call their fire trucks. Both of these symbols have to do with fire, the dominant image of Montag’s life—the hearth because it contains the fire that heats a home, and the salamander because of ancient beliefs that it lives in fire and is unaffected by flames."