Historical Vedic religion the central ideas and theosophy in the Vedas, and synergistically integrated new ideas. Of the major traditions that emerged from Brahmanism are the six "darshanas", particular the Vedanta, Samkhya and Yoga schools of Hinduism. Vedic religion was followed by Upanishads which gradually evolved into Vedanta, which is regarded by some as the primary institution of Hinduism. Vedanta considers itself "the purpose or goal [end] of the Vedas." There are some conservative schools which continue portions of the historical Vedic religion largely unchanged (see Śrauta, Nambudiri). Of the continuation of the Vedic tradition in a newer sense, Jeaneane D. Fowler writes
Ancient Iranian religion sources on Iranian myths, both from indigenous texts and classical authors, originated after the emergence of Zoroastrianism, it is difficult to distinguish between myths that are Zoroastrian innovations from that those that are inherited. The fact that Zoroastrianism is heavily inspired by already existing ideas and has adapted from previous Iranian religions makes this discerning particularly hard. Like other ancient religions in general, Iranian religions did not have main collection of myth. Iranian myths are rather fragments from a diverse variety of myths that exhibit variations in common themes. There is a variant of the Noah's Ark myth in Iranian