Monogamy arose from the concentration of considerable wealth in the hands of a single individuals man-and from the need to bequeath this wealth to the children of that man and of no other.

• 一夫一妻制的产生是由于，大量财富集中于一人之手，也就是男子之手，而且这种财富必须传给这一男子的子女，而不是传给其它人的子女。