(Another) Reply. The Amahraspands and other Yazads (existed for ever), because all creation and good creatures have been created by Ohrmazd. He tried. He created with purity. He saw, that it was (mixed) with light and darkness. Ahriman, like a worm, is so much associated with darkness and old age, that he (Ahriman) perishes in the end. And if Ahriman had been beaten (annihilated), then those numberless creatures and created beings would not have existed, because the world is to continue mixed for nine thousand years, because the creatures arc not of one nature, because they (partake) of light and darkness. From light (proceed) fragrance and goodness (and) every virtue and joy. From darkness (proceed) every harm because on account of the opposition of their natures, they are rivals and opponents with one another, as cold with heat, bad smell with fragrance, and darkness with light, and every other kind of evil with goodness. From all this, this must be known, that all power is not all of one nature, since all natures are opposed to their own natures, and (are) not increasers of power, because God has ordered (lit. controlled) that when water reaches water, wind reaches wind, and fire reaches fire, all their natures have boundless increase for one another. When they are of opposite natures light comes to and reaches darkness, fragrance to bad smell, heat to cold, dryness to moisture