Ouroboros

In Hermeticism, the Ouroboros represents the unity of all opposites — creation and destruction locked in a loop that sustains itself. Alchemists used it to mark the prima materia, the base substance from which all transformation begins, and it frequently appeared on alchemical manuscripts alongside the phrase 'hen to pan' (one is all). In Gnosticism, it marks the boundary of the material world — the serpent encircles the cosmos, containing everything within its body. Jungian psychology later adopted it as a symbol of the unconscious before individuation begins, the psyche feeding on itself before differentiation. In Norse tradition, Jörmungandr — the World Serpent — performs the same structural role, encircling Midgard and biting its own tail until Ragnarök breaks the cycle.

The earliest confirmed depiction of the Ouroboros appears in the Egyptian funerary text known as the Enigmatic Book of the Netherworld, found in the tomb of Tutankhamun (14th century BCE). The word itself comes from Greek: 'oura' (tail) and 'boros' (eating), giving 'tail-devourer.' The symbol moved into Greek philosophical thought through contact with Egypt, appearing in Plato's Timaeus (c. 360 BCE), where the first living creature is described as circular and self-consuming. From there it entered Hellenistic alchemy — the earliest alchemical manuscript to depict it explicitly is the Chrysopoeia of Cleopatra (c. 3rd century CE). Medieval European alchemists inherited it through Arabic translations of Greek texts, and it remained a fixture in Western esoteric imagery through the Renaissance.

If you want to work with the Ouroboros as a contemplative symbol, the most direct entry point is alchemical iconography. C.G. Jung's 'Psychology and Alchemy' (1944) analyzes the symbol in depth without requiring any prior knowledge of either alchemy or psychology — it's genuinely readable. For something more visual, the Getty Museum's digitized collection of alchemical manuscripts includes several illustrated versions. Wearing or drawing the symbol is common in modern esoteric practice as a reminder of impermanence — not as a talisman with assigned properties, but as a visual anchor for thinking about cycles in your own life, particularly around endings that don't feel finished.