Emotion is an essential component of human nature, and therefore it is necessary to explore the issue of a desirable emotional state if we want to properly discuss human well-being. This article examines the issue by advocating a new understanding of the Zhuangzi’s 莊子 ideas on emotion. In terms of the Zhuangzi’s ideas on the desirable emotional state, scholars have presented various interpretations to date, even arguing that the ideas themselves are mutually contradictory or inconsistent. This article shows that the (...) Zhuangzi’s ideas about emotions are in fact consistent by dividing emotions into two types: “conventional knowledge-dependent emotions” and “true knowledge-dependent emotions.” It then examines the characteristics of a desirable emotional state and the conditions necessary to reach it and explores the implications of the Zhuangzi’s ideas for discussions on well-being in modern times. (shrink)