5563. Occasionally pains are felt in the skull, sometimes in one part, at other times in another, when what seem like nodules which are separate from all other bones and so are the source of the pains are detected there. Experience has taught me that things of this nature are caused by falsities originating in evil desires. And what is a marvel, the genera and species of falsities have their own particular locations in the skull, as considerable experience has also enabled me to know. In the case of people undergoing reformation such nodules, which are pieces of hardness, are broken down and made soft; and this is done in a variety of ways. In general it is done by means of instruction in what is good and true, by means of incisive inroads made by truths, an activity accompanied by pain inwardly, and also by means of actual tearings apart, an activity accompanied by pain outwardly. For falsities originating in evil desires are of such a nature as to cause hardness; they are the opposite of truths. In the case of truths, because they take shape in accord with the shape heaven takes, they flow so to speak spontaneously, freely, gently, and softly. But the shape taken by falsities is the opposite because they incline in the opposite direction from heaven. As a consequence that flow associated with the form taken by heaven is blocked and hardnesses develop. For this reason those in whom deadly hatred and desires for revenge accompanying such hatred have existed, and in whom falsities originating in such desires have been present, possess skulls that are completely hardened. Some have skulls like ivory, which no rays of light, which are truths, can penetrate but are altogether turned back.