Lamenting= food of souls?

If this is true, then my soul runneth over.

(A quote from my trusty word of the day email defining satiety)

Isidore of Seville, in interpreting the Psalms in the seventh century, seconded the idea that tears produce satiety. "Lamenting," he wrote, "is the food of souls."
-- Tom Lutz, Crying: The Natural and Cultural History of Tears