How a Simple Human Smile Saved His Life
In a creative sandbox for what would become Saint-Exuperys most famous 
line in The Little Prince-- 'What is essential is invisible to the 
eye.'--  he writes: "How does life construct those lines of force which 
make us alive?Real miracles make little noise! Essential events are so 
simple!" One such essential event in Saint-Exupery's life had to do with
 the mundane miracle of a simple smile, a gift he so poetically 
describes as, "a certain miracle of the sun, which had taken so much 
trouble, for so many million years, to achieve, through ourselves, that 
quality of a smile which was pure success."
https://www.brainpickings.org/2014/04/18/antoine-de-saint-exupery-letter-to-a-hostage-smile/?mc_cid=c4ca16d6fb&mc_eid=76262496ff
https://www.brainpickings.org/2014/04/18/antoine-de-saint-exupery-letter-to-a-hostage-smile/?mc_cid=c4ca16d6fb&mc_eid=76262496ff