Books; other than to read and be food for the soul, what else can books do to our lives?
When the lifecycle of a book reaches almost the end, we use it to sprout the next generation green life, making it a full circle. Let the trees grow more books; let the books grow more trees. When plants grow to a certain point, we only need to plant the entire book into the ground, water the plant, let the pages rot and become nutrients for the plant, let the book reincarnate to become a tree.