Are there any major spiritual leaders in the founding or development of the religion? what status are the leaders given – as human teachers, or as supernatural figures themselves? are their words accepted as indisputably true information, or considered to be wise advice and guidance? does this religion have an institution with structure and hierarchy? if so, who are the supreme leaders of the organization, and what is their role and authority? are religious followers encouraged & allowed to acquire more knowledge about their religion by themselves?

Two most famous Zoroastrian leaders are Zoroaster himself who was considered to be a prophet. His teachings about the Ahura Mazda and the way the world should work are taken as the basis for Zoroastrianism. It is more of advice because there is no uniformity in it even though there are many similarities between various branches of Zoroastrianism. The main idea is that a person should be a good person and lead a good life that is not deceitful or evil. Doing the right thing and being truthful are highly praised and wanted, which goes even beyond religious beliefs. They are encouraged to develop because many modern Zoroastrian beliefs are made out of old ones that developed to suit the society nowadays, even though there are not that many Zoroastrians out there.

Herodotus taught that absolute right and wrong did exist.