9801. But to the extent that the internal man has been closed towards heaven and to the Lord it dwells in coldness and thick darkness so far as things of heaven are concerned. And to the extent then that the external man has been opened towards the world it thinks what is false and wills what is bad, and for this reason is insane. For the light of the world residing with the external man banishes the light of heaven, and the fire of the life of the world banishes the fire of the life of heaven.