Men and women need each other in their morontial and spiritual as well as in their mortal careers. The differences in viewpoint between male and female persist even beyond the first life and throughout the local and superuniverse ascensions. And even in Havona, the pilgrims who were once men and women will still be aiding each other in the Paradise ascent. Never, even in the Corps of the Finality, will the creature metamorphose so far as to obliterate the personality trends that humans call male and female; always will these two basic variations of humankind continue to intrigue, stimulate, encourage, and assist each other; always will they be mutually dependent on co-operation in the solution of perplexing universe problems and in the overcoming of manifold cosmic difficulties.

While the sexes never can hope fully to understand each other, they are effectively complementary, and though co-operation is often more or less personally antagonistic, it is capable of maintaining and reproducing society. Marriage is an institution designed to compose sex differences, meanwhile effecting the continuation of civilization and insuring the reproduction of the race.

Marriage is the mother of all human institutions, for it leads directly to home founding and home maintenance, which is the structural basis of society. The family is vitally linked to the mechanism of self-maintenance; it is the sole hope of race perpetuation under the mores of civilization, while at the same time it most effectively provides certain highly satisfactory forms of self-gratification. The family is man's greatest purely human achievement, combining as it does the evolution of the biologic relations of male and female with the social relations of husband and wife.

Sex mating is instinctive, children are the natural result, and the family thus automatically comes into existence. As are the families of the race or nation, so is its society. If the families are good, the society is likewise good. The great cultural stability of the Jewish and of the Chinese peoples lies in the strength of their family groups.

Woman's instinct to love and care for children conspired to make her the interested party in promoting marriage and primitive family life. Man was only forced into home building by the pressure of the later mores and social conventions; he was slow to take an interest in the establishment of marriage and home because the sex act imposes no biologic consequences upon him.

Sex association is natural, but marriage is social and has always been regulated by the mores. The mores (religious, moral, and ethical), together with property, pride, and chivalry, stabilize the institutions of marriage and family. Whenever the mores fluctuate, there is fluctuation in the stability of the home-marriage institution. Marriage is now passing out of the property stage into the personal era. Formerly man protected woman because she was his chattel, and she obeyed for the same reason. Regardless of its merits this system did provide stability. Now, woman is no longer regarded as property, and new mores are emerging designed to stabilize the marriage-home institution:

1. The new role of religion—the teaching that parental experience is essential, the idea of procreating cosmic citizens, the enlarged understanding of the privilege of procreation—giving sons to the Father.