But in marriage there must be above all else perfect companionship and mutual love of husband and wife, both in health and in sickness and under all conditions, since it was with desire for this as well as for having children that both entered upon marriage. Where, then, this love for each other is perfect and the two share it completely, each striving to outdo the other in devotion, the marriage is ideal and worthy of envy, for such a union is beautiful. But where each looks only to his own interests and neglects the other, or, what is worse, when one is so minded and lives in the same house but fixes his attention elsewhere and is not willing to pull together with his yoke-mate nor to agree, then the union is doomed to disaster and though they live together, yet their common interests fare badly; eventually they separate entirely or they remain together and suffer what is worse than loneliness.