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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.

Tianwen Editorial Team February 16, 2026 58 min read PDF Markdown
A Deep Study of Xunzi's 'Jie Pi' Chapter: On the Cognitive Foundations of the Mind—Emptiness, Unity, and Tranquility

Section 3: The Scope and Methodology of This Article

This study will proceed from two primary perspectives:

First, the Pre-Qin Intellectual Perspective. Focusing primarily on Confucianism and Daoism, we will extensively reference the thought of the various pre-Qin schools. We aim not merely to "compare," but to find "resonances"—common concerns, similar imagery, and mutually illuminating wisdom found repeatedly in the writings of different thinkers.

Second, the Ancient Mythology and Folk Wisdom Perspective. Pre-Qin thought did not arise in a vacuum; it is deeply rooted in the myths, religious beliefs, and folk wisdom dating back to antiquity. Concepts such as the Mind, the image of "Clarity and Brightness," and the notion of "Spiritual Luminosity" all possess extremely distant cultural origins. We will trace these concepts back to their ancient foundations in order to gain a deeper understanding of the cultural soil from which Master Xunzi’s thought sprang.

Methodologically, this article will adhere to the following principles:

One, extensive quotation of original pre-Qin texts, ensuring that arguments are based on textual evidence, not speculation. Two, repeatedly asking "Why$12" to pursue the underlying reasons (suoyi ran) for every important proposition. Three, striving for clarity and accessibility, supporting fluent argumentation with rigorous textual analysis. Four, strictly limiting the resources to pre-Qin and ancient thought, excluding references from the Han Dynasty onward.