People have called the Zoroastrians fire worshipers. It is a fact. They keep in their place of worship a constantly burning fire, but it is an object they keep before them when thinking of God, as fire purifies all things, and the light within purifies all souls. It is, in fact, a great comfort to have fire in the cold climate, and especially incense burning, which takes away the dampness of the place and gives a facility to the free and deep inhaling and exhaling of breath.