The Ouroboros or Uroboros (/jʊərɵˈbɒrəs/; /ɔːˈrɒbɔrəs/, from the Greek οὐροβόρος ὄφις tail-devouring snake) is an ancient symbol depicting a serpent or dragon eating its own tail.
According to the Teachings of H.P. Blavatsky the Ouroboros symbolizes:
(1) Eternity, such as in Hinduism where the great serpent Ananta-Shesha, who some portray as having seven heads and others as being thousand-headed, represents Eternity and Infinity itself.
(2) The never-ending cycle of evolution within the Eternity
(3) The “circle of necessity” of the Egyptians or the numerous reincarnations of the soul throughout its cyclic evolutionary journey, periodically casting off its temporary body just as the serpent periodically casts off its skin.
(4) Wisdom, the serpent having always been the chief symbol of wisdom in all nations throughout history and revered as such in all the religions and philosophies of the world except theological Christianity. Yet Christ himself is recorded as using the ancient symbolism, which was perfectly known throughout the Middle East, when saying “Be ye wise as serpents and harmless as doves.” In Sanskrit the word “naga,” meaning serpent, is also a synonym for “initiate,” one who has been initiated into the Mysteries of the Esoteric Wisdom.
(5) The circle is also the ancient symbol of perfection.