The tender light of evening is suddenly blotted out by the vapors, the light of the sun is quenched in gloom. […] They adored fire, light, and the sun, as emblems of Ormuzd, the source of all light and purity, but did not regard them as independent deities. […] This light was called by men the Aurora Borealis*. […] The light appears in the east and disappears in the west. […] The rays of light are his messengers and servants.