A new discussion on the moral value of "sympathy" in Kant's " Groundwork for the Metaphysics of Morals " based on the perspective of Confucian Moral Philosophy

In Kant's Groundwork for the Metaphysics of Morals, Kant abstracts his moral philosophy from the world of experience and practice, and wants to build a completely pure metaphysics of morals. But in his action to draw a line between the real world and metaphysical world, Kant excluded the behaviors stimulated from sympathy out of the moral behavior, and held the idea that this kind of behavior is not a moral behavior, but an action just out of hobbies. Based on the comparison with Mencius’ (孟子) construction of the metaphysics of morals, the author in this paper held the idea that we should reconsider the significance of sympathy in people’s mind. Kant’s discard to sympathy maybe the root of paradox that “moral behavior is inconsistent with happiness”