The leading reason for the separation of a couple's minds is the loss of good will, and so love, on the wife's part, when the man suffers from a loss of capability. For just as heat in both partners is mutually shared, so is coldness. Reason and experience both establish that the loss of love on the part of either partner puts an end to friendship, and so long as there is no fear that family property at home will suffer, good will too may be lost. If therefore the man thinks to himself that he is to blame, and the wife still continues to show chaste good will towards him, this may lead to a friendship which, being between married partners, looks like a love imitating conjugial love. Experience shows that a friendship like that of this love may exist between elderly couples, as a result of their living and working together, and enjoying each other's company in a calm, confident, loving and fully civilised way.