9801. On the other hand, in proportion as the internal man has been closed toward heaven and to the Lord, in the same proportion a man is in cold and thick darkness in respect to the things of heaven. And then in proportion as the external man has been opened toward the world, in the same proportion the man thinks what is false, and wills what is evil, and thus is insane; for the light of the world extinguishes in him the light of heaven; and the fire of the life of the world extinguishes the fire of the life of heaven.