Rogers’s favorite quotation, which he often cited and which he kept framed near his desk in his office, came from The Little Prince, by the French author, airplane pilot, and war hero Antoine de Saint-Exupéry: “L’essentiel est invisible pour les yeux.” In English translation, the full passage reads: “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.”