361. The reason why a man is on fire when his love is attacked shall now be disclosed. From its creation, the human form in its inmosts is a form of love and wisdom. In man, all affections of love and thence all perceptions of wisdom are arranged in most perfect order so that together they make a unanimous whole and thus a one. These affections and perceptions are substantiate, substances being their subjects. Since, therefore, the human form is composed of them, it is plain that if the love is attacked, then, in an instant or simultaneously, the whole form is attacked together with each and every thing therein. From creation it is implanted in all living things to will to remain in their own form. Therefore the whole structure wills this from its several parts, and the parts from the whole. Hence, when the love is attacked, it defends itself by its understanding, and the understanding by things rational and imaginative whereby it represents to itself the outcome; and, more especially, by those things which make one with the love which is attacked. Were this not done, the whole form would fall asunder because of the loss of that love.  Hence then it is, that in order to resist attacks, love hardens the substances of its form and erects them into crests, as it were, being so many pricks; that is to say, it bristles up. Such is that exasperation of love which is called zeal. Therefore, if there is no opportunity to resist, anxiety arises, and grief; for the love foresees the extinction of its interior life together with the delights thereof. On the other hand, if the love is favored and soothed, the form relaxes, softens, dilates; and the substances of the form become smooth, bland, gentle, and alluring.