On the basis of summarizing the ethnic ideas of former greeks , aristotle , according to the greek actual demand in his time , expounded what the differences were between greeks and barbaric races , why barbaric races were accustomed to servility , how the servility of barbaric races influenced their autocracy , and why the greeks ' keeping barbaric races in bondage were valid , and so on 摘要亚里士多德在总结希腊前人民族思想的基础上，结合当时希腊世界现买需要，系统阐述了希腊民族与野蛮民族的区别、野蛮民族具有奴性的原因、野蛮民族奴性对其专制政体的影响、希腊人奴役野蛮民族的合法性等问题。
