The egg is an ancient symbol of the soul.
Egg One of the most comprehensive symbols, equally suggestive in a spiritual, physiological, and cosmological sense. Among other things, it stands for primordial chaos, the universal matrix, the great Deep, the Virgin Mother, and also for the kosmos or world egg produced from it.
The egg is used in Easter celebrations as the symbol of the renewal of life. The Easter egg derives from the pagan custom of exchanging eggs at the birth-time of the year. Originally it had a deep esoteric hint completely lost sight of today where the custom is still held in the Occident, although commonly candies in the shape of eggs are exchanged. Giving a fellow disciple an egg in the old Mystery schools suggested the rebirth of nature, so apparent in the springtime, or again the initiation ceremonies that prevailed at the spring equinox, thereby expressing the hope that he too might at some time be “reborn,” able to free his spiritual nature from the enveloping shell as a chick frees itself from the egg.
Sometimes the word is used for the circle or zero, for the egg combines the senses of fertility and sphericity in one symbol. The egg with its central germ is the circle with the point. In company with the stroke for the masculine power in nature — sometimes represented as a vertical line — it makes the number 10, or the figure of relatively perfected or complete emanation. The egg was the symbol of life in immortality and eternity, and also the glyph of the generative matrix. The anatomy of a hen’s egg shows a wonderful analogy with the stages in comic evolution and the human principles.