372. We have said that inherent in conjugial love is a fear of its being sundered, and an anguish at the possibility of its perishing; also that its zeal is like a fire against encroachment. When I was once reflecting on this subject, I asked some zealous angels about the seat of jealousness. They said that it is in the intellect of a man who receives his partner's love and loves her in return, and that its quality there is according to his wisdom. They said, too, that jealousness has something in common with esteem, which is also present in conjugial love; for anyone who loves his partner also esteems her. [2] On the point that zeal in a man has its seat in his intellect, the reason, they said, is that conjugial love protects itself through the intellect, as good protects itself through truth. Thus a wife protects those concerns which she has in common with a man through her husband. And for that reason zeal is implanted in men, and through men and on account of men in women. In response to my asking in what region of the mind in men it resides, they replied, in their souls, because it is also a protection against adulterous affairs. And since these are what principally destroy conjugial love, the man's intellect hardens at threats of encroachment and becomes like a horn smiting the adulterer.