心性在亚当.斯密的伦理思想体系中具有重要的意义。“商业心性”和“同情心性”都是商业社会中的人之本性。追根溯源,心性不仅是亚当.斯密建构其价值体系的基础,还是其人格理论形成的内因,是其全部伦理思想的本原。从“心性”这个新的视角出发,有利于我们全面正确地把握亚当.斯密的伦理思想。 Heart is of great significance in Adam Smith’s ethical system. “Commercial heart ” and “sympathy ” are all human nature in commercial society. Tracing back to the source, the nature of mind is not only the foundation of Adam Smith’s construction of its value system, but also the internal cause of his personality theory, which is the origin of all ethics. From the new point of view of “Xinxing”, it helps us to grasp Adam Smith’s ethical thoughts in an all-round and correct manner.