The phrase is shared by the , who teaches the Little Prince about the nature of relationships:
The full sentence is: "On ne voit bien qu'avec le cœur. L'essentiel est invisible pour les yeux." This translates to: . LEssentiel est Invisible
It suggests that the most important things in life—like love, friendship, and character—cannot be understood through physical sight alone. They must be felt and experienced through the "heart" or one's inner essence. Key themes in the text The phrase is shared by the , who