In "Silver on the Tree" by Susan Cooper, a conversation unfolds between Will and Bran regarding the fate of leaves during autumn. Will remarks on their disappearance, suggesting a deeper, natural cycle of life that involves renewal. This reflection prompts a moment of levity and connection between the two characters, as Bran appreciates the poetry in Will’s words. Bran's grin indicates that he finds comfort in this poetic thought, recognizing the beauty in the cycle of nature. Will's acknowledgment of the leaves growing again adds a layer of insight, illustrating that while change may be dramatic, it is not permanent. Their dialogue captures a blend of philosophy and friendship, reflecting the themes of growth and renewal prevalent in the story.