The Phoenix is a mythological bird that bursts into flames at death. Then, it rises from the ashes and is born again. The bird represents Montag’s spiritual rebirth and society’s attempt to rediscover. Also, the phoenix is likened to ourselves and how we destroy ourselves and rebuild again and again.
In the story, Granger suggest that they build a giant mirror factory and take a look at themselves. Clarisse is also compared to a mirror for helping Montag to see himself. Finally, the mirrors represent who we really are.
The hearth symbolizes both fire and the home. In addition, the salamander symbolizes fire because of its mythology. In the story, the symbols are ironic because Montag does not live unharmed by fire like the salamander in mythology. Also, Montag's home is corrupted. This fact is evidenced by Mildred’s overdose of sleeping pills.