In the Kalevala, the Finnish national epic, there is a myth of the world being created
from the fragments of an egg laid by a goldeneye on the knee of Ilmatar, goddess of the air:
One egg's lower half transformed
And became the earth below, And its upper half transmuted
And became the sky above;
From the yolk the sun was made,
Light of day to shine upon us;
From the white the moon was formed,
Light of night to gleam above us;
All the colored brighter bits
Rose to be the stars of heaven
And the darker crumbs changed into
Clouds and cloudlets in the sky.

The ancient symbol of the Orphic Mysteries was the serpent-entwined egg, which signified Cosmos as encircled by the fiery Creative Spirit. The egg also represents the soul of the philosopher; the serpent, the Mysteries. At the time of initiation the shell is broken and man emerges from the embryonic state of physical existence wherein he had remained through the fetal period of philosophic regeneration. —"The Secret Teachings of All Ages" by Manly P. Hall

Oh
light of the middle way,
enclosed in the egg,
embryonic,
full or ardor, oppressed.
Fully expectant,
dreamlike, awaiting lost memories.
As heavy as stone, hardened.
Molten, transparent.
Streaming bright, coiled on itself.
~Carl Jung; Red Book.