The concept of freedom is the thinking of Sartre s existential core of Sartre s "there is freedom" as the basis to people is freedom,freedom is a natural attribute of people,was later known as the "Absolute freedom" concept.

Ownership guaranty underwent a reconstruction process of ups in 19 century and downs in 20 century,but the reconstruction is not to discard a late concept and create a new ownership type but to reform and improve it and to desert the nature of absolute freedom and adopt the nature of relative limitation.

The thinking mode of "syllogism" type and the thinking mode of "absolute discretion" type are two kinds of extreme performance of the mode of judge thinking,but uncover the basic characte.