“In some respects I think the tendency of the Negro for several centuries past has been an actual retrograde one. As we come to read the unwritten history of Africa by researches into languages, manners, customs, traditions, we seem to see a backward rather than a forward movement going on for some thousand years past—a return towards the savage and even the brute. I can believe it possible that, had Africa been more isolated from contact with the rest of the world, and cut off from the immigration of the Arab and the European, the purely Negroid races, left to themselves, so far from advancing towards a higher type of humanity, might have actually reverted by degrees to a type no longer human.” On the other hand, G. Stanley Hall says that our intercourse with the African races “had been a curse and not a blessing. Our own Indians are men of the Stone Age whom Bishop Whipple thought originally the noblest men on earth. Look at them now!”[21] Up to a short time ago men of authority asserted that marriage had sprung up from a “state of promiscuity,” the believers in this theory forgetting that even “among animals the most akin to man, this state of promiscuity is rather exceptional.” Most of the people cited as following this practice have been shown to have individual marriage to the exclusion of other forms. Undoubtedly in many cases what are called group marriages have been mistaken for promiscuity. Almost equally low in the social scale is polyandry, where one woman may have several husbands. Whatever the origin of marriage, the fact is, however, that the idea of marriage comes after the idea of the child—as in the animal world, the family is established for the purpose of taking care of the children that have been brought into the world.[22] In _Mahabharata_, the Indian poem, we are told that marriage was founded by Swetaketu, son of the Rishi Uddalaka; according to the Chinese annals, the Emperor Fou-hi established the custom; the Egyptians ascribed its introduction to Menes, and the Greeks to Kekrops. Nowhere is it assumed as a condition of the race of all time. Its origin, growth, and development are really the origin, growth, and development of the idea of protecting human offspring. A convincing scientific explanation of marriage, however, has been set forth by Westermarck.[23] Among the great sub-kingdom of the Invertebrata not even the female parent exhibits any anxiety about the offspring. The heat of the sun hatches the eggs of the highest order, the insects, and in most cases the mother does not even see her young.[24]