本文據我近年對程伊川、朱子系的理解，討論唐、牟二先生及余英時教授對朱陸異同如何解決的看法。並引入康德自由意志與無條件的實踐法則（道德法則）為互相涵蘊，而認知何謂無條件的實踐，須以法則來開始之說，說明程朱、陸王二系，其實是可以會通，都是儒學合理的，而且不可少之教法。

Based on my a-decade researches of the moral philosophy of the "mode of Chen-Zhu," I investigate and remark on Tang Junyi's, Mou Zongsan's and Yu Ying-shih's respective perspectives of the similarities and dissimilarities between Zhu Xi’s and Lu Jiuyuan’s moral theories. In addition, to benefit from one of Kant's important theses— freedom and unconditional practical law reciprocally imply each other, and our cognition of unconditional practice must start from unconditional law—, I offer a justification that it is theoretically feasible to bridge the moral theories between the "mode of Chen-Zhu" and the "mode of Lu-Wang." Therefore, both modes, in Confucian tradition, are justifiable and indispensable moral theories.