It is the image of a snake, dragon or worm forming a circle by biting its own tail. They are represented with the Greek inscription "917; 957; 964; 959; 928; 945; 957;» (hen to pan "the One is the All" or "All is One"), and represents the natural cycles, the 'eternal return', which restarts at the conclusion. They exist in the Egyptian, Greek, Chinese and Arabic traditions. Some versions show the animal with one half light and the other dark, such as Yin and Yang, day and night, life and death. Other interpretations attribute to him "the time and continuity of life", "the conscious and the unconscious", the alchemical quest to unite opposites. The name in Greek means "who eats his own tail", and is formed by the voices 959; 965; 961; 959; ( ouró "cola" ) 946; 959; 961; 959; 962; ( voros "food") . See capicúa .