The chief reason why married couples who do not love each other are still jealous are respect for power, fear of having one's own or one's wife's name slandered, and apprehension of a domestic catastrophe. It is well known that men respect power, that is, they want to be thought important as the result of receiving respect. For so long as they have this respect, they are mentally exalted and hold their heads high among men and women. This respect also involves a reputation for bravery; which is why it is to be found more among army officers than others.

The fear of having one's own or one's wife's name slandered is linked to the previous reason. Moreover, living with a prostitute or turning one's house into a brothel is a disgrace. The reason why some people are jealous out of apprehension of domestic catastrophe is that the husband is so much despised, and mutual help and duties come unravelled. But this jealousy in some cases declines with time and becomes nothing; and in some cases it turns into a mere pretence of love.