The Dual Distinction Of Phenomenon And Noumenon

In the preface to the second edition of the Critique of the Pure Reason,Kant proposed the ideal how to master the knowledge previously.Realism thought all our cognition must conform to the object.However,idealism thought the object must conform to our cognition.But,in the view of Kant,he thought if institution has to conform to the construction of the objects,then I do see how we can know anything of them a priori.But if the object conforms to the constitution of our faculty of institution,I can represent this possibility to myself.In this condition,Kant propose the synthetic a priori to solve the problem which is objective,universality and necessity,and which could extend our cognition.The critique of pure reason is to discuss the synthetic a priori judgements which includes how is pure mathematic possible,how is pure natural science possible,how is metaphysics as a natural predisposition possible,and how is metaphysics possible as science.The first belong to the field of phenomenon.The last belong to the field of noumenon.This paper is to represent the “architectonically” in the critique of pure reason.Through Copernican Revolution,we can build the possibility of the cognition on the ground of self-consciousness.The field we can know called phenomenon and we cannot know but we can consider called things in themselves through to distinguish the negative and the positive of reason,so that we can leave the field to the freedom.Firstly,this paper discuss the system of the field of phenomenon which include sensation and cognition.Secondly,talking about the three object in the field of noumenon.The field of phenomenon is a room,and the field of noumenon is a room after this room.This paper through the dual distinction of phenomenon and noumenon to demonstrate that the purpose of Kant is to want to look for the freedom.