“Goodbye, said the fox. And now here is my secret, a very simple secret. It is only with the heart that one can see rightly. What is essential is invisible to the eye.” Antoine de Saint-Exupéry, The Little Prince The Little Prince is a novella of equal appeal to children and adults. It is the most famous work of Antoine de Saint-Exupéry. In addition, the thoughts and prayer of Antoine de Saint-Exupéry are included at the end of the book.