Sophie's World was a philosophical novel. It mainly told the story of a girl named Sophie who traveled through time and entered a different world called Zizelle. There, she met various characters and gradually explored the meaning of life and philosophical problems. In the novel, Sophie gradually realized the essence and philosophical significance of human existence through constantly traveling through different worlds and communicating with different characters. She discovered that human beings were not isolated individuals, but were interconnected and interacted with other things. In this world, there were many different religions, philosophers, cultures, and ideas that conflicted with each other but were also mutually dependent. Sophie believed that humans needed to find their own mission and goals to survive in this challenging and uncertain world. At the same time, she emphasized that humans needed to maintain an open, tolerant, and curious attitude in order to constantly explore and discover new things and principles. Sophie's World explored the meaning of human existence, philosophical issues, and values through the perspective of a little girl, and showed readers a world full of imagination and exploration.