Zoroaster other Zoroastrian elements are either not part of Zoroaster's own teachings or are used quite differently from how they are used in Zoroastrianism. Zoroaster appears in the Bahá'í Faith as a "Manifestation of God", one of a line of prophets who have progressively revealed the Word of God to a gradually maturing humanity. Zoroaster thus shares an exalted station with Abraham, Moses, Krishna, Jesus, Muhammad, the Báb, and the founder of the Bahá'í Faith, Bahá'u'lláh. Shoghi Effendi, the head of the Bahá'í Faith in the first half of the 20th century, saw Bahá'u'lláh as the fulfillment of a post-Sassanid Zoroastrian
Zoroaster will. The purpose of humankind, like that of all other creation, is to sustain "aša". For humankind, this occurs through active participation in life and the exercise of constructive thoughts, words and deeds. Elements of Zoroastrian philosophy entered the West through their influence on Judaism and Middle Platonism and have been identified as one of the key early events in the development of philosophy. Among the classic Greek philosophers, Heraclitus is often referred to as inspired by Zoroaster's thinking. In 2005, the Oxford Dictionary of Philosophy ranked Zarathustra as first in the chronology of philosophers. Zarathustra's impact lingers today due