In all those regions in which polygamy has existed or still exists, the status of woman is extremely low; she is treated as man's property, not as his companion; her life is invariably one of great hardship, while her moral, spiritual, and intellectual qualities are almost utterly neglected. Even the male human being is in the highest sense of the phrase naturally monogamous. His moral, spiritual, and aesthetic faculties can obtain normal development only when his sexual relations are confined to one woman in the common life and enduring association provided by monogamy. The welfare of the children, and therefore, of the race, obviously demands that the offspring of each pair shall have the undivided attention and care of both their parents. When we speak of the naturalness of any social institution, we necessarily take as our standard, not nature in a superficial or one-sided sense, or in its savage state, or as exemplified in a few individuals or in a single generation, but nature adequately considered, in all its needs and powers, in all the member of the present and of future generations, and as it appears in those tendencies which lead toward its highest development. The verdict of experience and the voice of nature reinforce, consequently, the Christian teaching on the unity of marriage. Moreover, the progress of the race toward monogamy, as well as toward a purer monogamy, during the last two thousand years, owes more to the influence of Christianity than to all other forces combined. Christianity has not only abolished or diminished polyandry and polygamy among the savage and barbarous peoples which it has converted, but it has preserved Europe from the polygamous civilization of Mohammedanism, has kept before the eyes of the more enlightened peoples the ideal of an unadulterated monogamy, and has given to the world its highest conception of the equality that should exist between the two parties in the marriage relation. And its influence on behalf of monogamy has extended, and continues to extend, far beyond the confines of those countries that call themselves Christian.