There is a passage in one of the sacred books relating how God created the earth and then created the heavens. What does this mean? Was heaven created after the earth? The meaning is that this creation which is around us is first impressed upon the mind, and then the mind creates its own world, its own heaven. It is the creation of mind, a higher world, yet within ourselves; and this world may be heaven, or it may be the opposite. As Omar Khayyam writes, "Heaven is the vision of fulfilled desire, and hell the shadow of a soul on fire", which shows that the desire is the source of heaven and its fulfillment. At the same time it is mental fire and disappointment, or worry, or anxiety, or torture that is the shadow of the soul on fire.