The Phoenix mentioned during the end of the book is a symbol of the fire station and is on the firemen's helmet and the fire truck. It is symbolic because the actual bird supposedly starts a fire every 500 years and then jumps into it setting itself on fire and when it dies a new phoenix jumps from the fire to continue on. This is to say that books are going to be burned but they will eventually come back from the fire to be with the world and to let everyone read them.