Ancient Iranian religion was strongly connected. Beginning in the early 10th-century BC, the ancient Iranian religion was gradually displaced by Zoroastrianism, which contains many essential aspects of its predecessor. The sources on ancient Iranian religion, though limited, consist of textual and material sources. The textual sources are both Iranian and non-Iranian. An important Iranian source is the Avesta, which are Zoroastrian sacred scriptures made in the Avestan. This is considered the principal source of knowledge on ancient Iranian religions. It is a collection of several texts that seems to have been over a large span of time by a variety of authors. These
Mehrdad Avesta Mehrdad Avesta Mehrdad Avesta (; 8 August 1930 – 6 May 1991) was an Iranian contemporary poet. Mohammad Reza Rahmani, publicly known as Mehrdad Avesta, was born in Borujerd into a literature and art-oriented family. When he was young, he changed his first name from Mohammad Reza to Mehrdad and his family name from Rahmani to Avesta in order to show his passion for ancient Persian culture. Avesta entered the University of Tehran in 1948 and finished his academic studies in same university with a M.A. degree in Philosophy. When he was 25 years old, he started teaching literature, philosophy