367. (6) The zeal of conjugial love is called jealousness. Zeal in defense of truly conjugial love is the highest form of zeal, because that love is the greatest of loves, and its delights - which are also watched over zealously - are the greatest of delights; for, as shown previously, that love is the head of all loves. The reason is that conjugial love induces on the wife a form of love, and on the husband a form of wisdom; and when these two forms are united into one, nothing else can flow from them but what partakes of wisdom and at the same time of love. Since the zeal of conjugial love is the highest form of zeal, therefore we call it by a new name, jealousness, which denotes the very epitome of the quality of zeal.