二，What is politics and how to explain and improve politics:3 approaches on politics 1.Moral politics:ideal polity Confucious,Plato 2.Divine politics:earth vs.heaven Augustine:power on the earth from God in the heaven Dong Zhongshu(董仲书)：harmony between man and nature (“天人合一”，“天子受命于天，天下受命于天子”、“天子”、“真龙天 子”)