Níðhöggr
The dragon gnawing the deepest root of the World Tree while an eagle watches from the crown.

At the deepest root of Yggdrasil, the World Tree, the dragon Níðhöggr gnaws without rest — while high in the crown sits an eagle, and up and down the trunk runs the squirrel Ratatoskr, carrying insults between them. It is the oldest comic diagram of the mind: the heights and the depths locked in mutual accusation, with chattering thought as their messenger. Yet the tree lives, tended daily by the Norns at the well — gnawed below, renewed above, its endurance made of both.
The Great Correspondence
The Night WatchNüwa & Fuxi, serpent-bodied, gave humanity the 64 trigrams. The 64 descends from a serpent's hand. Here are this serpent's threads in the lattice.
«The Root mansion belongs to the root-gnawer: what works at the base of the World Tree keeps watch at the base of the sky.»
The SGE Reading
Shadow as permanent tenant: the gnawing below is not an emergency but a condition — met by daily tending, not by eviction.
Canon Resonance
The inner weather of every character who mistakes the eagle-serpent quarrel for their whole self.
A Micro-Practice
Notice today one 'message' your mind carries between your ideals and your appetites. Thank the squirrel; decline the delivery.
Sources & Respect
Poetic and Prose Edda (Grímnismál, Gylfaginning).