The great synthesizer of Song dynasty Neo-Confucianism, known as Master Hui'an and the leading figure of Min Learning. He fused Zhou Dunyi's Supreme Ultimate, Zhang Zai's qi theory, and the Cheng brothers' Heavenly Principle into an immensely comprehensive and rigorous system of objective Neo-Confucianism. His Collected Commentaries on the Four Books became the absolute standard for the imperial examinations through the Yuan, Ming, and Qing dynasties, profoundly shaping the modes of thought, ethical order, and political institutions of the East Asian Confucian cultural sphere for eight hundred years.
Zhu Xi, courtesy name Yuanhui, also Zhonghui, ancestral home Wuyuan in Huizhou, born in Youxi, Fujian. Precocious from childhood—as soon as he could speak, his father pointed to the sky and said "This is heaven," and Xi asked "What is above heaven?" His father was astonished. He passed the jinshi examination at nineteen and held posts such as registrar in Tong'an, prefect of Nankang, and intendant of tea and salt in eastern Zhejiang, governing with emphasis on education, water conservancy, and disaster relief. He rebuilt the White Deer Grotto Academy and personally wrote its rules; he also established the Wuyi Retreat and the Yuelu Academy for teaching, with disciples throughout the realm. In his later years, when Han Tuozhou held power, Zhu Xi was denounced as a "false learning rebel," his teachings banned, his disciples scattered. He died in illness and exhaustion under political pressure at Jianyang. Yet after his death, Emperor Lizong posthumously honored him as Grand Preceptor, and for the Yuan, Ming, and Qing dynasties, Zhu Xi's learning became the official orthodoxy. His Collected Commentaries on the Four Books became the sole standard for the imperial examinations, with an influence in the history of Chinese thought that is virtually unrivaled.
Zhu Xi's cosmological compass is "principle precedes qi" (li zai qi xian): "principle" is the transcendent, purely good metaphysical substance—the prior blueprint of why things are as they are. "Qi" is the material that implements principle; principle and qi are inseparable yet not mixed. "The Supreme Ultimate is principle"—the Supreme Ultimate is the totality of all principles; each thing contains one Supreme Ultimate while all converge in a single Supreme Ultimate. In human nature theory, he inherits Zhang Zai's distinction of "nature of Heaven and Earth" and "physical nature,"主张 using the cultivation of "dwelling in reverence and exhausting principle" to transform physical nature. In cultivation theory, he integrates Cheng Yi's "investigating things to extend knowledge" with "nourishing through reverence," valuing both outward investigation and inward examination. In social ethics, he proposes "preserving heavenly principle and eliminating human desire"—its original intent was to use reason to curb selfish desire and rebuild social moral order, but later generations distorted it into an asceticism of礼教 bondage.
"Before the existence of heaven and earth, there was already this principle. All things each contain one Supreme Ultimate and all share one Supreme Ultimate. Preserve heavenly principle; eliminate human desire. — Zhuzi Yulei"
Zhu Xi's "preserve Heavenly Principle, extinguish human desire" was later distorted into the oppressive edifice of feudal ritualism that killed, yet his original intent was to curb greed and tyranny and rebuild the moral floor of society. How should we dialectically engage this historical paradox?
Zhu Xi and Aquinas both use reason to construct grand theological-philosophical syntheses, fusing faith and reason, heavenly principle and natural law into a comprehensive edifice of order.
Can a comprehensive rational synthesis of faith and philosophy be sustained without contradiction? Do the grand systems of Zhu Xi and Aquinas represent the peak of human philosophical achievement, or the ultimate trap of scholastic thinking?
Zhu Xi's "investigating things to extend knowledge" and Aristotle's empirical investigation both begin from particular things and abstract to universal principles, embodying the fusion of rationalism and empiricism.
Can the method of investigating particular things genuinely lead to universal truth? Do the epistemological methods of Zhu Xi and Aristotle represent parallel discoveries of the same rational-empirical approach?
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