QUOTE : Healing and protection are long-standing themes for the serpent: the wand of Asclepius, Greek god of medicine, wrapped by a single serpent, inspires the symbols of the American Medical Association and the World Health Organization. Hermes’ winged staff, entwined by a pair of snakes, forms the caduceus, a symbol of alchemy and commerce, and a second symbol of medicine. Jung considered ouroboros, the snake swallowing its own tail, to be the one archetypal symbol that explained absolutely everything.