The fable of Stone Soup is probably my favorite piece of European folklore. In the Russian version, which I prefer, called Axe Porridge, the story goes something like this:
A soldier returning from war stops at a village, hungry and tired. He knocks on the door of a rich, stingy Scrooge of a woman. In response to his request for food, she of course claims she has nothing. So the canny soldier asks her for just a pot and water, claiming he can make “axe porridge” out of an old axe-head he spots lying around. Intrigued the woman agrees.
You know how the rest of the story goes: the soldier quietly hustles a bunch of other ingredients — salt, carrots, oats — out of the old woman, under the guise of “improving the flavor” of the axe porridge. He does this one ingredient at a time, offering an evolving narrative on the progress of the porridge (“this is coming along great; now if only I had some oats to thicken it.”)
The result is some excellent porridge that they share, while applauding the idea of axe porridge together. The shared fiction that soup can be made out of an axe-head results in the fact of real porridge for all.
There are some deep insights into the psychology of wealth and the nature of progress in this fable, insights that are very relevant for our times.