Free love, however, has never been in good standing above the scale of rank savagery. The moment societal groups began to form, marriage codes and marital restrictions began to develop. Mating has thus progressed through a multitude of transitions from a state of almost complete sex license to the twentieth-century standards of relatively complete sex restriction.

In the earliest stages of tribal development the mores and restrictive taboos were very crude, but they did keep the sexes apart—this favored quiet, order, and industry—and the long evolution of marriage and the home had begun. The sex customs of dress, adornment, and religious practices had their origin in these early taboos which defined the range of sex liberties and thus eventually created concepts of vice, crime, and sin. But it was long the practice to suspend all sex regulations on high festival days, especially May Day.

Women have always been subject to more restrictive taboos than men. The early mores granted the same degree of sex liberty to unmarried women as to men, but it has always been required of wives that they be faithful to their husbands. Primitive marriage did not much curtail man's sex liberties, but it did render further sex license taboo to the wife. Married women have always borne some mark which set them apart as a class by themselves, such as hairdress, clothing, veil, seclusion, ornamentation, and rings.

Marriage is the institutional response of the social organism to the ever-present biologic tension of man's unremitting urge to reproduction—self-propagation. Mating is universally natural, and as society evolved from the simple to the complex, there was a corresponding evolution of the mating mores, the genesis of the marital institution. Wherever social evolution has progressed to the stage at which mores are generated, marriage will be found as an evolving institution.

There always have been and always will be two distinct realms of marriage: the mores, the laws regulating the external aspects of mating, and the otherwise secret and personal relations of men and women. Always has the individual been rebellious against the sex regulations imposed by society; and this is the reason for this agelong sex problem: Self-maintenance is individual but is carried on by the group; self-perpetuation is social but is secured by individual impulse.

The mores, when respected, have ample power to restrain and control the sex urge, as has been shown among all races. Marriage standards have always been a true indicator of the current power of the mores and the functional integrity of the civil government. But the early sex and mating mores were a mass of inconsistent and crude regulations. Parents, children, relatives, and society all had conflicting interests in the marriage regulations. But in spite of all this, those races which exalted and practiced marriage naturally evolved to higher levels and survived in increased numbers.

In primitive times marriage was the price of social standing; the possession of a wife was a badge of distinction. The savage looked upon his wedding day as marking his entrance upon responsibility and manhood. In one age, marriage has been looked upon as a social duty; in another, as a religious obligation; and in still another, as a political requirement to provide citizens for the state.