(628 BCE - 551 BCE)
Zoroaster (also known as Zarathustra) lived in the eastern part of the Iranian Plateau. He received his illumination from Ahura Mazda, the supreme deity of truth and light. He founded Zoroastrianism, one of the world's oldest monotheistic religions. His teachings emphasized the cosmic struggle between truth (Asha) and falsehood (Druj), and the importance of good thoughts, good words, and good deeds.