People still practice Zoroastrianism. In terms of when it started, there's some debate. A lot of accounts have it starting as early or even earlier than 3,500 years ago, so around 1500 BCE, and some accounts put it a little bit closer to Cyrus the Great, maybe 700 or 600 BCE, and the accounts or the beginning of the religion is really around the teachings of Zarathustra, and his teachings really established one of the first, often viewed as monotheistic religions of the world, this idea that there is one god, and that god in the Zoroastrian faith is Ahura Mazda, Ahura Mazda, and it's viewed that Ahura Mazda does not take a human form, and you cannot even conceive, fully conceive, the human mind can't fully conceive of Ahura Mazda, but Ahura Mazda is, in the Zoroastrian faith, the one and only god, but in conjunction with the idea of Ahura Mazda, a lot of people refer to Zoroastrianism as a dualistic faith. Dualistic faith means that there's this kind of interest in counterbalancing forces, for example, light versus dark, and of course, good versus evil, and one of the main ideas or words here are the ideas of asha and druj. So asha, these are the ideas of being principled, honest, ordered, and druj is the opposite. Druj is the idea of being unprincipled, dishonest, chaotic, and so there's a lot of talk and kind of insight or trying to get a better understanding of these dualistic natures in the world, and trying for humanity to be on the site of the good, the light, the ordered, the principled, the honest. Now, right over here is a key symbol of Zoroastrianism that you might see.