The relationship between freedom and nature is the basic logical clue to understand Kant’s critical philosophy,and their harmony or unity constitutes the foundation and destiny of the critical philosophy.As Critique of Judgment focuses on the possibility of the harmony/unity of the concepts of freedom and nature,it is more than merely an intermediary,a link or a bridge between Critique of Pure Reason and Critique of Practical Reason.Rather,it is basically the development,destiny and foundation of these two other Critiques.It is precisely because of Critique of Judgment that Kant’s moral religion can make sense,and the meaning of faith in his critical philosophy be shown.This faith can be termed as the faith of Natural Idea(or Ideal Nature).