What is a quote that reveals the theme of happiness in 'Burning Bright'? How?
At the end of Fahrenheit 451 the reference to "the tree of life" shows happiness and rebirth:
And on either side of the river was there a tree of life, which bare twelve manner of fruits, and yielded her fruit every month; And the leaves of the tree were for the healing of the nations. Yes, thought Montag, that's the one I'll save for noon. For noon... When we reach the city.
The quote is a kind of biblical allusion, symbolic of the tree of knowledge in Genesis. As you know, paper is made from trees: so the tree is symbolic of surviving books and knowledge. The tree's leaves, or pages, will be used for the "healing of the nations."
The quote also reveals Montag as a leader of the Book People, survivors of this nuclear holocaust and censorship dystopia.