自我是"智慧说"研究的主题之一，冯契从智慧的角度考察自我，强调在认识世界的同时认识自己，并将自我看作是由自在到自为的过程。在对自我的讨论过程中，冯契给予自我以明确的概念界定，心灵与德性作为自我认识的内容，构成自我概念的内涵。从观念史的角度考察自我，冯契将自我观念古今变迁看作是由单一的道德自我向独立而全面发展的个性自我认同的转变，并通过对中国传统价值学说的争论和近代价值变革的考察，提出了合理的价值体系的基本原则与"平民化"的自我观念。

The "Self" is one of the main topics in FENG Qi's "doctrine of wisdom". From the perspective of wisdom, FENG lays emphasis on knowing the self in the course of knowing the world, regarding the self as a process from being in itself to being for itself. According to FENG's definition, "mind" and "virtue" as the content of self-knowledge constitute the connotation of the concept of the self. In the intellectual history of the self, FENG argues, the self transforms from the pure moral self to the personality of independence and overall development. Examining the debates on China's traditional doctrines of values on the one hand and value reform in modern China on the other, FENG puts forward principles of a reasonable value system and a concept of the "civilian" self.