Le Petit Prince

The essence of French aviator Antoine de Saint-Exupery's most famous novel, 'Le Petit Prince' is contained in the line uttered by the fox to the Little Prince: "On ne voit bien qu'avec le cœur, l'essentiel est invisible pour les yeux" (It is only with the heart that one can see rightly; what is essential is invisible to the eye).
The fox was also right when he said, "It is the time you have wasted for your rose that makes your rose so important".

Alas, reality bites... humans are sometimes stupid. We don't see with our heart.
I saw this poster in a geologist friend's room and I can't help but smile.

Quel humuor!