37. Each individual has an internal and an external but there is a difference between the case of the good and that of the evil. The good have their internal in heaven and its light, and their external in the world and its light. For them this light is lit up by the light of heaven, so that for them the internal and the external act as one, like the efficient cause and the effect, or like prior and posterior. For the evil, however, their internal is in the world and its light, and their external too is in the same light. Consequently they see nothing by heaven's light, but only by the world's light, which they call the illumination of Nature. That is why anything to do with heaven seems to them to be in thick darkness, and anything to do with the world in light. It is obvious from this that the good have an internal and an external man, but the evil have no internal man, but only an external one.