88. With such a difference between the spiritual and the natural (as shown above, n. 83), nothing from the sun of the natural world, that is, nothing of its heat and light, nor anything pertaining to any earthly object, can pass over into the spiritual world. To the spiritual world the light of the natural world is thick darkness, and its heat is death. Nevertheless, the heat of the world can be vivified by the influx of heavenly heat, and the light of the world can be illumined by the influx of heavenly light. Influx is effected by correspondences; and it cannot be effected by continuity.