In the village I lived in, when I resided in Provence, the local Boulanger requested my Iron skills to make a controversial weather vane for his bakery.
After some thought, I fabricated a Coq that rotated atop three of the compass points and a loaf which represented East or Yeast.
Lever is the French verb to rise, Levin is yeast ( A bread riser ). And the Coq, who is up before anyone, was, as I had assumed, the perfect metaphoric riddle.
But Pascal, Le Boulanger was not impressed, as I had neglected to consider, that the French don't speak English and hence, the Yeast polarity pun was lost on everyone.