If among the Latins the women of royal blood always stayed at home and received as their consorts men of another stock, and often of another country, who reigned as kings in virtue of their marriage with a native princess, we can understand not only why foreigners wore the crown at Rome, but also why foreign names occur in the list of the Alban kings. In a state of society where nobility is reckoned only through women--in other words, where descent through the mother is everything, and descent through the father is nothing--no objection will be felt to uniting girls of the highest rank to men of humble birth, even to aliens or slaves, provided that in themselves the men appear to be suitable mates. What really matters is that the royal stock, on which the prosperity and even the existence of the people is supposed to depend, should be perpetuated in a vigorous and efficient form, and for this purpose it is necessary that the women of the royal family should bear children to men who are physically and mentally fit, according to the standard of early society, to discharge the important duty of procreation. Thus the personal qualities of the kings at this stage of social evolution are deemed of vital importance. If they, like their consorts, are of royal and divine descent, so much the better; but it is not essential that they should be so. At Athens, as at Rome, we find traces of succession to the throne by marriage with a royal princess; for two of the most ancient kings of Athens, namely Cecrops and Amphictyon, are said to have married the daughters of their predecessors. This tradition is to a certain extent confirmed by evidence, pointing to the conclusion that at Athens male kinship was preceded by female kinship.