372. It was said that in conjugial love is implanted fear lest it be divided, and grief lest it perish; and that its zeal is like fire directed against violation. Once, when meditating upon this, I asked certain zealous angels respecting the seat of jealousy. They said: "It is in the understanding of the man who receives the love of his partner and loves her in return, and its quality there is according to his wisdom." They also said that jealousy has something in common with honor, which also is within conjugial love, for he who loves his partner also honors her.  As to the reason why with a man zeal resides in his understanding, they said: "Conjugial love protects itself by the understanding, as good protects itself by truth. So a wife protects those things which she has in common with the man by her husband. Therefore, zeal is implanted in men, and through men and on account of men, in women." To the question, in what region of the mind does it reside with men, they answered: "In their souls, because it is also a protection against adulteries, and because these are what principally destroy conjugial love. Therefore, in the presence of attempts at its violation, the man's Understanding hardens and becomes as a horn smiting the adulterer."