Summary: The Little Prince by Antoine de Saint-Exupéry Main Theme, Key Ideas, and Takeaways The main theme of The Little Prince is the importance of human connections and the value of human life. Key ideas include the importance of imagination, curiosity, and love, and the dangers of materialism and narrow-mindedness. The book's takeaway is that life is more than just the material things we possess, and that the things that truly matter are invisible to the eye.