„Here is my secret. It is very simple. It is only with the heart that one can see rightly; What is essential is invisible to the eye.“
— Antoine de Saint-Exupéry French writer and aviator 1900 - 1944
Variant translations: Here is my secret. It is very simple: one sees well only with the heart. The essential is invisible to the eyes. The essential things in life are seen not with the eyes, but with the heart.