对“心性是一”命题的正确理解对于正确理解牟宗三的整体思想至关重要。从根本上说,杨泽波教授对牟宗三“三系论”的批评就是对其“心性是一”思想的不接受、不认同。而正确理解“心性是一”思想需要一种更为根本性的眼光,这就是目的论的视角。在目的论的视野下,“心性是一”可以看作“人类理性目的论”的必然结论。 A correct understanding of the proposition that “one’s heart and one heart is one” is of crucial importance in correctly understanding the overall thinking of Mou Zongsan. Fundamentally, Professor Yang Zebo’s criticism of Mou Zongsan’s “three-line theory” is that it does not accept or disapprove of his “one-heart-one” thinking. However, to correctly understand the idea that “one’s heart is one” needs a more fundamental perspective, this is the teleological perspective. In the field of teleology, “one heart and one heart” can be regarded as the inevitable conclusion of “human rational teleology”.