A Combat between Natural Human Nature and Social Human Nature——An Interpretation on Involution of Frollo's Natural Human Nature

A hypothesis of social rational people who have both substantial and moral preference is given, an elementary model of principal - agent theory based on the hypothesis is founded, the studies of motivation contracts are made individually, according to the situation of complete and incomplete information.

The historical development of constitutional philosophy depends on the basic effect on constitution of humanism, of which natural humanism breeds the bud of ancient constitution with "priority of rule by law", rational humanism conduces to the formation of modern constitution with "limited government", and social humanism sets off the development of modern constitution.

Social Reasonableness and Social Justifiability——Thinking on the possibility of building a people-oriented society;