„There is a tradition that a Parthian king, Valakhsh or Vologases, collected together fragments of the 21 books attributed to Zoroaster, which had survived Alexander's destruction of the Iranian prophet's works. However that may be, what evidence there is seems to indicate that the Parthians inherited and maintained what has been called 'a general Mazdayasnian religious predominance'. This means, in fact, that they continued the religioius situation that existed under the Achaemenians. For under these rulers, while Zoroaster's Ahura Mazdah was worshipped and Arta, the principle of cosmic good order, was exalted, the Iranian deities Mithra and Anahita were also acknowledged, contrary to the teaching of Zoroaster, and the Magi, the ancient Persian priestly caste, extended their influence. The Parthians were Mazdah worshippes and respected the Magi; several of their monarchs incorporated references to Arta and Mithra in their names. They were also fire worshippers...”

 

In: Richard Cavendish szerk.: Man, Myth & Magic – An Illustrated Encyclopedia of the Supernatural (vol. 16); Marshall Cavendish Corp. New York, 1970, 2144. o.