ZOROASTER..the man, the myth, the legend.
He showed that there were two sides in the world..two opposing forces, good and evil. He showed that the only god, Ahura Mazda, to worship was the good god. He was the god of everything good, true, and pure, and who wouldn't want a good, happy life? He beleived that people had free will and could act as they choose. He advocated good deeds, truth telling, and avoiding evil. His sacred text, the Avesta, served as a guideline. It simply stated that in the end, if you lived a good life, you'll be rewarded. I believe he was a great Persian leader, because he promoted a free willing lifestyle with the motive for happiness and reward.