"two principles balance one another, active and passive, masculine and feminine,
which constitute the essence of creative power in the eternal cycle of birth and death.
represented in ancient alchemy by the symbol of the uroboros, the dragon that bites its own tail.
Self-devouring is the same as self-destruction,
but the union of the dragon’s tail and mouth was also thought of as self-fertilization.
Hence the texts say: “The dragon slays itself, weds itself, impregnates itself.”