"Based on the balancing act of the golden mean, bourgeois marriage mixed moderate but continuing sexual attraction, a mutual social and economic interest in living together, respect for the wife, a will to create a lineage, significant socio-cultural similarity, hypocrisy for dissimulating and managing adulterous liaisons (hence the importance of legal prostitution), and the building up of a patrimony to be transmitted. When the couple gets old, this leads to a habitual tenderness much stronger than the passionate and ephemeral simulation of today’s young couples."