According to this theory, exogamoustribes can only obtain their wives from other tribes; and since in savagery there is a permanent state of war between tribe and tribe, these wives could only be obtained by capture.

• 根据这一说法，外婚制的部落只能从别的部落娶妻，而这在与蒙昧时代相适应的各部落之间战争不断的状态下，只有用抢劫的办法才能做到。