Nostalgie de la boue (English: "nostalgia for mud") is a French phrase meaning the attraction to low-life culture, experience, and degradation, found at times both in individuals and in cultural movements.
[2] Marion Woodman the Jungian considered that a break or katabasis from the normal social world could leave the protagonist trapped by "a yearning for what I call pig consciousness—wallowing in mud and loving it".
[3] Helen Vendler considered that something of the kind happened to Seamus Heaney when, after a venture in abstraction, he recoiled to ground himself in a material world of mud and dirt.
Le Marquis: Mettez un canard sur un lac au milieu des cygnes, vous verrez qu’il regrettera sa mare et finira par y retourner.
(Translation: You put a duck in the middle of swans, you'll see that he will miss his pond and eventually return.)