Zoroaster was the first (known) philosopher. We know few details of him with accuracy: he lived approximately 3,000 years ago - give or take a few centuries - and we know he lived somewhere near northeastern Iran or Afghanistan. He was also known as Zarathushtra Spitama or Ashu Zarathushtra, and was perhaps the first spiritual leader to teach dualism, deism, or monotheism - belief in one God, and in the black and white idea that we have the free will to choose between good and evil. He is considered an ancient Iranian prophet whose teachings eventually developed into