Zoroastrianism is an ancient Persian religion founded by Zarathustra and is claimed to be the oldest monotheistic religion. Zoroastrian scriptures are found in the Avesta. The Zoroastrian creed is to live a life based on good thoughts (Manashni), good words (Gavashni) and good deeds (Kunashni). For more information on this religion's rich history, culture, influences, and progress in the modern day world, we have provided some helpful links.