In college I met a whimsical little sprite who told me this was her favorite book. I had never read it, and to impress my new friend, picked up a copy. It had me in tears, and I've read it repeatedly since, crying every time (in the good way). Though it appears to be a simple story for children, it becomes more relatable the older you get. It illustrates to me that as we grow up, we think we know what is best for ourselves and those around us, and how often we regret the choices we make in those moments of confidence. Most importantly though, it expresses the simple hope that the next choice will be better. That we can grow and improve, and even with our mistakes, we can leave a positive impact behind us.
An aviator whose plane is forced down in the Sahara Desert encounters a little prince from a small planet who relates his adventures in seeking the secret of what is important in life.