Zoroaster scholars, philosophers, and theologians to test his knowledge on religion and jurisprudence. Among the summoned scholars was a Zoroastrian High Priest. Al-Ridha questioned the priest on his beliefs saying,“Tell me about Zoroaster, whom you claim is a prophet; what is your evidence for his Prophethood?” to which the response was “We did not see him, but the tales of our ancestors informed us that he had legalized for us what no other person before had made legal.” Imam Al-Ridha responded “This is the case with all other nations. Tales had come to them about what the prophets had accomplished, what
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