7179. There are two mental powers in a person; one is called the understanding, the other the will. The will has been given to a person for the sake of the good of love, and the understanding for the sake of the truth of faith; for the good of love attaches itself to the will, and the truth of faith to the understanding. And each mental power communicates with the other in a remarkable manner. They become joined together in the case of those governed by good and from this by truth; and they also become joined together in the case of those governed by evil and from this by falsity. With both groups those two mental powers make a single mind. But the situation is different with those who subscribe to truth so far as belief is concerned but are governed by evil so far as life is concerned, as it is likewise different with those who subscribe to falsity so far as belief is concerned but are governed by seeming good so far as life is concerned.