A Deep Study of Xunzi's 'Jie Pi' Chapter: On the Cognitive Foundations of the Mind—Emptiness, Unity, and Tranquility
This paper provides an in-depth analysis of the core proposition in Xunzi's 'Jie Pi' concerning the nature of cognition: 'How does man know$41 By the mind. How does the mind know$42 By being empty, unified, and tranquil.' It systematically interprets the dialectical relationship and philosophical implications of 'emptiness' (xu), 'unity' (yi), and 'tranquility' (jing) in cognition, tracing their ancient intellectual origins to reveal the systematicity and sophistication of Pre-Qin cognitive theory.
Section 5: From Knowledge to Action
Master Xunzi says:
"Knowing the Dao, one can discern; knowing the Dao, one can act; this is one who embodies the Dao."
After knowing the Dao, one must be able to discern (cha), and further, one must be able to act (xing 行). Knowing and being able to act—this is the one who "embodies the Dao" (ti dao zhe 体道者).
There is an important thought here: Cognition is not the end point; practice is. Even the best cognition is empty if it cannot be translated into action; even the profoundest principle is useless if it is not embodied in behavior.
Master Kong also emphasized this:
"If one memorizes the three hundred Odes but is assigned to government duties and cannot manage them; if sent on a mission to the four quarters, he cannot manage independent negotiation—of what use is all that learning$5" (Analects, Chapter 5.11)
The value of knowledge lies in practice; the purpose of cognition is action—this is a fundamental conviction of pre-Qin Confucianism. Master Xunzi’s concept of the "embodier of the Dao" is the concentrated manifestation of this conviction.