朱熹 “修德为本” 思想的义理溯源、逻辑建构与道德合理性

The Doctrine of “Cultivating virtue as the foundation of moral cultivation” by Zhu Xi: Theoretical Origin, Logical Construction, and Moral Rationality Justification

—— 基于二程 “入德之门” 论述及《大学》八条目次第的贯通性研究

—A Coherent Study Based on the Cheng Brothers’ “Gateway to Virtue Realm of Sagehood” and the Eight-Item Sequence of The Great Learning

Introduction

The Song Neo-Confucian Movement was dedicated to the reconstruction of Confucian ethical systems and the reshaping of traditional Chinese social value orders. As the paramount synthesizer of Neo-Confucian thought, Zhu Xi elevated the pre-Qin Confucian tradition of personal self-cultivation into a foundational normative principle that permeates cosmological speculation, mind-nature philosophy, political ethics, and everyday moral praxis. On this basis, he systematically established a rigorous and holistic virtue ethical system centered on the core tenet of “cultivating virtue as the foundation of moral cultivation.” Rather than an original theoretical creation, this doctrine represents a creative inheritance of the Cheng Brothers’ Neo-Confucian legacy, a hermeneutical renewal of classical Confucian canons including The Great Learning, The Analects, and Mencius, and a targeted theoretical response to the intellectual and ethical challenges posed by the dominant discourses of Buddhism and Taoism in the Song Dynasty.

This study elaborates the core connotation, classical foundations, and fundamental value implications of Zhu Xi’s thesis of virtue-centered cultivation from a macroscopic perspective. At the same time, this paper explores the doctrine’s internal theoretical logic, practical structural framework, and moral legitimacy through genealogical inquiry and textual exegesis, focusing specifically on the Cheng Brothers’ proposition of the “Gateway to Virtue Realm of Sagehood for beginners” and the progressive eight-item cultivation sequence of The Great Learning. While the former provides a comprehensive theoretical overview, the latter delivers microscopic textual verification and logical corroboration. Together, they lay a solid foundational framework for interpreting Zhu Xi’s virtue-centric ideological system.

Through vertical tracing of ideological evolution, hierarchical interpretation of theoretical connotations, and systematic integration of practical doctrines, this study  constructs a full-spectrum analytical framework covering conceptual definition, ideological origin, logical construction, rationality justification, and contemporary value elucidation. This study comprehensively demonstrates how Zhu Xi inherited the Cheng Brothers’ discourse on moral initiation and reconstructed the canonical framework of the Three Cardinal Principles and Eight Items in The Great Learning. By transforming conventional moral self-discipline into an ultimate ethical foundation and ontological origin that bridges heavenly principle and human morality, as well as inner sageliness and outer kingliness, this research restores the holistic coherence and rigorous logical integrity of Zhu Xi’s Neo-Confucian virtue system.

I. Ideological Origin: The Cheng Brothers’ Canonical Foundation of the “Gateway to Virtue Realm of Sagehood” and Zhu Xi’s Neo-Confucian Inheritance

A precise understanding of the theoretical origin of Zhu Xi’s “cultivating virtue as the foundation of moral cultivation” doctrine hinges on recognizing the Cheng Brothers’ canonical positioning of The Great Learning, which constitutes the shared premise of Cheng-Zhu Neo-Confucian theories of moral learning and self-cultivation. Prior to the Tang Dynasty, The Great Learning circulated merely as an ordinary ritual treatise embedded in The Book of Rites and had not yet been established as the core introductory classic for Confucian moral cultivation. In the mid-Tang Dynasty, Han Yu initiated the reconstruction of Confucian orthodoxy to counter the prevailing influence of Buddhism and Taoism. In Yuan Dao (On the Original Dao), he cited the complete logical chain from mind rectification and intention sincerity to state governance and world pacification in The Great Learning, excavating its inherent logic of self-cultivation and political edification and laying preliminary groundwork for its subsequent canonical elevation.

It was the Northern Song Neo-Confucian scholars Cheng Hao and Cheng Yi who formally elevated The Great Learning to the status of the core classic for Confucian virtue cultivation. Cheng Yi’s definition of the text as “the Gateway to Virtue Realm of Sagehood for beginners”fundamentally restructured the paradigmatic approach to Confucian moral learning and provided the direct academic origin for Zhu Xi’s foundational virtue theory. The proposition of the “Gateway to Virtue Realm of Sagehood” embodies two definitive theoretical implications. First, The Great Learning offers an exclusive and accessible path for moral beginners to transcend natural biological existence and enter normative moral existence. Second, the text contains a hierarchical and systematic cultivation praxis that guides learners to progress from basic cognitive discipline to profound moral attainment and ultimately achieve the perfection of moral personality.

Dissatisfied with the disordered textual arrangement of the ancient version of The Great Learning preserved in The Book of Rites, the Cheng Brothers rearranged its structural sequence based on their Neo-Confucian interpretations and implicitly distinguished between canonical text and exegetical commentary. Their structural correspondence between core principles and explanatory paragraphs significantly enhanced the text’s systematicity and logical rigor, paving the way for Zhu Xi’s subsequent textual revision and theoretical systematization.

Zhu Xi consistently upheld the Cheng Brothers’ academic judgment and fully affirmed the canonical status of The Great Learning as the fundamental “Gateway to Virtue Realm of Sagehood.” On this basis, he further deepened its theoretical connotations and reconstructed its ideological system. In his Preface to the Commentary on The Great Learning, Zhu Xi established a two-stage progressive framework for Confucian learning: elementary learning and great learning. From the age of eight, children across all social strata received elementary training in daily rituals, etiquette, and six traditional arts—ritual, music, archery, charioteering, calligraphy, and mathematics—aimed at cultivating habitual moral dispositions and foundational self-discipline. At the age of fifteen, outstanding learners advanced to the stage of great learning, which focuses on the ultimate disciplines of principle investigation, mind rectification, self-cultivation, and social governance.

Within this developmental framework, elementary learning undertakes foundational behavioral cultivation and moral nurture, while great learning initiates authentic in-depth virtue learning centered on “illuminating heavenly principle and cultivating the self.” The Great Learning precisely serves as the pivotal textual medium connecting preliminary habitual cultivation and advanced moral initiation.

Surpassing the Cheng Brothers’ foundational positioning, Zhu Xi conducted more profound theoretical excavation and systematic textual integration. Revising the Cheng Brothers’ rearrangement, he adjusted problematic textual sequences, supplemented interpretive omissions, and compiled the authoritative Daxue Zhangju (Chapter and Sentence Commentary on The Great Learning). He formally divided the text into one canonical chapter and ten commentary chapters: the canonical section records Confucius’ core teachings sorted and compiled by Zengzi, while the commentary section elaborates and interprets canonical propositions through the exegesis of Zengzi and his disciples.

Crucially, Zhu Xi tightly integrated the core value of The Great Learning with the Confucian ideal of “inner sageliness and outer kingliness.” He argued that the textual framework of the Three Cardinal Principles and Eight Items constitutes a complete moral praxis system spanning individual self-cultivation and universal social pacification, with personal virtue cultivation functioning as the unshakable central pivot and ultimate foundation of the entire system.

Furthermore, Zhu Xi accomplished the Neo-Confucian transformation of the Cheng Brothers’ “Gateway to Virtue Realm of Sagehood” thesis. Whereas the Cheng Brothers defined The Great Learning primarily from the pragmatic perspective of introductory moral education, Zhu Xi embedded this proposition into his cosmology of principle (理li) and vital energy (气qi), as well as his systematic mind-nature theory. He elevated the elementary behavioral initiation of “entering virtue” into a holistic academic system that bridges transcendent heavenly principle and mundane human ethics. For Zhu Xi, the unique value of The Great Learning lies in its comprehensive structural design: it encompasses grand cosmic and social ideals while detailing operable procedural cultivation disciplines, with virtue cultivation serving as the unifying core and fundamental fulcrum throughout. In essence, the Cheng Brothers’ discourse provides the logical origin of Zhu Xi’s foundational virtue theory, while Zhu Xi’s systematic exegesis expands this origin into a comprehensive virtue ethics system covering ontology, moral praxis, political philosophy, and everyday life.

II. Theoretical Connotation: Conceptual Definition and Classical Justification of Zhu Xi’s “Cultivating virtue as the foundation of moral cultivation”

Building on the inheritance and refinement of Cheng School thought, Zhu Xi clarified the theoretical connotation of “cultivating virtue as the foundation of moral cultivation” through canonical interpretation and the construction of his principle-qi cosmology and mind-nature theory. He systematically defined the core concept, clarified its ontological ground, and established its value priority, consolidating the theoretical foundation for its practical logical construction.

2.1 Fundamental Definition: Virtue as the Root and Self-Cultivation as the Foundation

The core proposition of Zhu Xi’s doctrine derives directly from the root-branch dialectic inherent inThe Great Learning. The classic states that “all things have roots and branches; all affairs have beginnings and endings. To know priority and sequence is to approach the Dao.” This maxim establishes the core logic of Confucian praxis: grasping the fundamental root is the essence of practicing the supreme Dao. Within the entire framework of the Three Cardinal Principles and Eight Items, virtue cultivation functions as the absolute foundation governing individual moral refinement and universal social governance.

The Great Learning adopts a bidirectional logical structure of retroactive tracing and progressive practice to consolidate the foundational priority of virtue cultivation. Retroactively, the supreme ideal of illuminating universal virtue presupposes state governance; state governance presupposes familial regulation; familial regulation presupposes personal self-cultivation. Progressively, the exhaustive investigation of things yields complete knowledge; complete knowledge yields sincere intention; sincere intention yields rectified mind; rectified mind yields self-cultivation; self-cultivation yields familial harmony; familial harmony yields orderly state governance; orderly state governance yields universal peace. In this closed-loop logical structure, self-cultivation serves as the exclusive hub connecting internal mind-nature nurture and external social praxis. The first four disciplines (investigating things, extending knowledge, sincere intention, rectifying mind) constitute the internal preparatory praxis of self-cultivation, while the subsequent three disciplines (regulating family, governing state, pacifying the world) represent its external extension and natural practical outcome.

Zhu Xi precisely captured this core implication and repeatedly emphasized the absoluteness and universality of “self-cultivation as the foundation” in his canonical commentaries. The classic assertion that “from the Son of Heaven to commoners, all take self-cultivation as the foundation”dismantles feudal hierarchical status disparities and establishes equal moral responsibility for all human beings regardless of social rank, embodying profound and universal ethical significance. From the perspectives of substance-function and root-branch dialectics, Zhu Xi clarified that “self-cultivation corresponds to the governance of the state and the world: self-cultivation is the root, and state and world governance is the branch.” As the ontological foundation of individual existence and social development, virtue cultivation constitutes the inner sagely substance of manifesting inherent bright virtue, while social governance represents the external kingly function derived from foundational self-cultivation.

The core textual support for this logic lies in The Great Learning’s definitive thesis that “virtue is the root; wealth is the branch.” Zhu Xi transcended the original narrow context of fiscal ethics and elevated this proposition into a universal social and political value principle. The original text argues that virtuous governance secures popular support, territorial stability, and sustainable fiscal resources, whereas prioritizing material profit over moral virtue inevitably triggers social contention and moral collapse. Zhu Xi further innovated this logical framework by affirming the rationality of legitimate material wealth while establishing the hierarchical order of “virtue generating wealth and wealth originating from virtue.” Material prosperity is ethically legitimate only when grounded in virtuous governance; excessive fiscal exploitation without moral foundation leads to the catastrophic consequence of “wealth accumulation dispersing the people,”while virtuous benevolence and equitable wealth distribution achieve the effect of “wealth dispersion uniting the people.” This theoretical transformation elevates individual moral cultivation to the fundamental normative principle of political governance, realizing the organic unity of personal ethics and socio-political ethics.

2.2 Ontological Ground: Heavenly Principle Endowment and the Restoration of Bright Virtue

Zhu Xi’s doctrine of “cultivating virtue as the foundation of moral cultivation” is not a mere normative social proposition, but an ontologically grounded moral doctrine rooted in his systematic Neo-Confucian cosmology and mind-nature theory. Its inherent necessity and moral rationality originate from humanity’s transcendent heavenly-endowed virtuous nature, rather than artificial social stipulation or external moral indoctrination.

Centering on the core Neo-Confucian thesis that “human nature is principle (性即理xing ji li)”, Zhu Xi constructed a complete existential chain connecting cosmic heavenly principle and human moral practice. All cosmic entities are constituted by li (the metaphysical, pure, and supreme ontological principle of the universe) and qi (the physical, diverse, and empirical vital energy that shapes tangible existence). As the most spiritually endowed beings in the cosmos, humans embody the integration of principle and vital energy: the heavenly principle instantiated in human beings constitutes the innate “heavenly-endowed nature” of benevolence, righteousness, ritual propriety, and wisdom, while vital energy forms human physical embodiment and existential carrier.

Within this system, “bright virtue (明德mingde)” serves as the pivotal concept bridging transcendent heavenly principle and human moral existence, providing the ultimate ontological foundation for virtue cultivation. Zhu Xi defines bright virtue as “the spiritually luminous principle endowed by heaven, encompassing all cosmic truths and enabling appropriate responses to all worldly affairs.”It represents humanity’s innate transcendent moral ontology, inherently perfect and fully embodying the supreme heavenly principle. In empirical existence, however, bright virtue is often constrained by turbid vital energy and obscured by selfish human desires. Nevertheless, its original luminous essence never vanishes and continuously manifests virtuous sprouts in daily human practice.

This definition reveals the essential nature of virtue cultivation: moral praxis is not external normative indoctrination, but the internal restoration of innate bright virtue through eliminating the obscuration of turbid vital energy and selfish desires. Employing the classic mirror metaphor, Zhu Xi illustrates that original human nature is intrinsically luminous; selfish desires and bad habits are analogous to accumulated dust, and virtue cultivation consists in constant cleansing to recover humanity’s inherent moral brightness.

To further validate the possibility and subjectivity of moral cultivation, Zhu Xi creatively distinguished between “innate moral knowledge (良知liangzhi)” and “moral conscience (良心liangxin)” as the subjective ground of virtue praxis. Liangzhi refers to the transcendent, universal, and immutable ontological moral nature endowed by heaven, constituting the eternal and objective foundation of human morality. Liangxin denotes the situational manifestation of innate moral knowledge when the human mind remains unobscured by selfishness, which is susceptible to change amid empirical mental activities and practical choices. The universality of innate moral knowledge guarantees the objective validity of universal moral principles, while the variability of moral conscience justifies the irreplaceable necessity of acquired moral cultivation. The essence of virtue cultivation lies in preserving and expanding moral conscience to fully actualize innate moral knowledge and transcend the limitations of turbid vital energy and selfish desires. This rigorous mind-nature theory furnishes solid philosophical grounding for the foundational status of virtue cultivation: moral praxis is not an external moral constraint, but the inevitable return to humanity’s authentic heavenly-endowed ontological nature.

2.3 Triple Normative Principles: Rational Judgment, Ethical Norms, and the Unity of Knowledge and Action

Based on the conceptual definition and ontological foundation of foundational virtue cultivation, Zhu Xi established three hierarchical and complementary normative principles, translating abstract metaphysical theories into concrete, operable practical moral standards.

First, the normative principle of “prioritizing righteousness over profit and regulating desire through morality” governs value judgment. Inheriting the core “virtue-root wealth-branch” logic, Zhu Xi constructed the Neo-Confucian discourse of righteousness-profit distinction. He never negated the legitimacy of moderate material interests, but insisted that all profit-seeking behaviors must be subordinated to moral righteousness. The inversion of root and branch—prioritizing private profit over public virtue—inevitably triggers social competition, ethical disorder, and moral degeneration. This principle applies primarily to scholar-officials and political governors, demanding that public governance prioritize moral rectitude over fiscal accumulation and guide societal value orientation through virtuous exemplariness.

Second, the ethical principle of “eliminating selfish partiality and upholding public justice” governs interpersonal relations. For Zhu Xi, heavenly principle embodies universal, impartial, and absolute goodness, whereas human selfish desire represents partial, private, and irrational inclination. The entire process of virtue cultivation consists in the dynamic progression of preserving heavenly principle and eliminating selfish desire. Practically, it requires practitioners to fulfill fundamental human ethics including filial piety, fraternal respect, and interpersonal faithfulness in daily social interactions, while restraining partial selfish motives in public affairs. This universal ethical standard applies equally to all social strata, realizing the egalitarian moral implication that all people, regardless of status, take self-cultivation as the foundational duty.

Third, the practical principle of “mutual reinforcement of knowledge and action with moral cognition as the prerequisite” governs moral praxis. Zhu Xi rejected two extreme deviations in moral practice: empty theoretical accumulation of moral knowledge without practical application, and blind practical conduct without rational moral guidance. He argued that moral cognition constitutes the fundamental prerequisite of valid moral action: only through investigating things and exhausting inherent principles can humans acquire clear moral judgment and establish correct practical orientation. Moral practice, in turn, embodies and completes moral cognition; abstract theoretical knowledge without practical implementation remains empty and invalid. Authentic virtue cultivation proceeds from rational learning and principle exploration to practical implementation in daily rituals and social affairs, gradually internalizing external moral norms into stable, inherent virtuous character.

III. Logical Construction: The Cultivation Sequence and Closed Theoretical System of the Eight Items in The Great Learning

The Cheng Brothers’ “Gateway to Virtue Realm of Sagehood” provides the classical premise of Zhu Xi’s doctrine, The Great Learning’s virtue-root thesis establishes its core value orientation, and mind-nature theory furnishes its ontological ground. On this basis, the eight-item cultivation sequence supplies the complete procedural logic for Zhu Xi’s “cultivating virtue as the foundation of moral cultivation” theory. By constructing a tripartite progressive structure of inner sagely self-cultivation, central pivot of self-cultivation, and outer kingly social extension, Zhu Xi transforms the abstract value proposition of foundational virtue cultivation into a staged, operable, and self-consistent closed-loop praxis system.

3.1 Holistic Framework: The Bidirectional Logical Structure of Root-Branch Hierarchy

Zhu Xi interprets the eight-item system as the systematic carrier of his foundational virtue theory, characterized by strict root-branch hierarchy, fixed sequential priority, and bidirectional logical verification through retroactive tracing and progressive practice. This framework anchors the supreme social ideal of universal moral edification to the most fundamental cognitive discipline of investigating things, and extends basic individual moral cultivation to the ultimate goal of universal peace, forming an integrated, self-contained theoretical loop.

Retroactive logic traces the supreme ideal backward to foundational practice: universal peace presupposes state governance; state governance presupposes familial regulation; familial regulation presupposes personal self-cultivation; self-cultivation presupposes mind rectification; mind rectification presupposes sincere intention; sincere intention presupposes extended knowledge; extended knowledge resides in the investigation of things. This backward deduction locates the ultimate foundation of all outer kingly social undertakings in individual virtue cultivation.

Progressive logic advances from foundational practice to the supreme social ideal: the investigation of things yields exhaustive knowledge; exhaustive knowledge yields sincere intention; sincere intention yields rectified mind; rectified mind yields self-cultivation; self-cultivation yields familial harmony; familial harmony yields orderly state governance; orderly state governance yields universal peace. This forward progression confirms the inviolable sequential order of moral praxis, wherein each cultivation stage serves as the necessary and indispensable foundation for the next.

For Zhu Xi, this bidirectional structure embodies rigorous metaphysical and practical causal necessity. The eight items interconnect organically without omission or arbitrary rearrangement. The entire theoretical system revolves around the central pivot of self-cultivation (virtue cultivation): the first four inner disciplines accomplish internal sagely moral nurture, while the latter three external disciplines realize outer kingly social extension. All inner moral cultivation and external social governance constitute differentiated manifestations of the single foundational principle of cultivating virtue.

3.2 Inner Sagely Dimension: The Cultivation Disciplines of Investigating Things, Extending Knowledge, Sincere Intention, and Rectified Mind

Zhu Xi categorizes investigating things, extending knowledge, sincere intention, and rectified mind as the inner sagely disciplines of moral self-cultivation. The core purpose of these inward disciplines is to eliminate the obscuration of turbid vital energy and selfish desires and restore humanity’s innate bright virtue, thereby accomplishing the fundamental transformation from natural biological existence to authentic moral existence. Among these four disciplines, investigating things and extending knowledge serve as the foundational initiation of authentic moral learning.

Inheriting the core tenets of the Cheng School, Zhu Xi prioritizes “investigating things and extending knowledge” as the primary gateway to the Dao. He defines gewu (格物investigating things) as exhausting the inherent principles of all affairs and entities to the utmost degree, and zhizhi (致知extending knowledge) as fully expanding innate moral cognition to eliminate all ignorance and conceptual confusion. Ordinary human beings are inherently obscured by turbid vital energy and selfish desires, lacking conscious moral discernment and often conflating carnal desires with universal moral principles. Without prior principle investigation and cognitive clarification, moral nurture becomes blind, confused, and misguided. The discipline of investigating things and extending knowledge functions to enlighten human moral cognition, distinguish good from evil, clarify the substance of heavenly principle, and initiate authentic moral life.

Upon establishing clear and accurate moral cognition, cultivation advances to the disciplines of sincere intention and rectified mind, which mark the pivotal transition from abstract cognitive understanding to resolute volitional moral commitment. Zhu Xi defines sincere intention as purifying internal mental motivation to eliminate self-deception and unify all subjective intentions toward goodness. He regards sincerity of intention as the critical boundary between virtue and vice, where passive cognitive clarity transforms into active, resolute moral choice. Rectified mind further deepens this disciplinary practice by eliminating excessive emotional turbulence and selfish obsession to maintain constant mental vigilance, reverence, and rectitude. As the fundamental master of human conduct, an unrectified mind cannot sustain consistent virtuous practice even with clear moral knowledge. Only through cultivating sincere intention and rectified mind can stable moral will be established to support subsequent comprehensive self-cultivation.

Zhu Xi emphasizes that the four inner sagely disciplines are not isolated, discrete stages, but mutually supportive and interdependent practical components in lived moral practice. Principle investigation requires a state of reverent mental composure, while sincere intention and rectified mind depend on principled cognitive clarity to avoid empty, aimless spiritual practice. The ultimate goal of integrated inner cultivation is the full manifestation of innate bright virtue through eliminating selfish obscuration, laying a solid theoretical and practical foundation for the central pivot of comprehensive self-cultivation.

3.3 Central Pivot: Self-Cultivation as the Nexus of Inner Sageliness and Outer Kingliness

Within the eight-item sequential system, self-cultivation exclusively serves as the indispensable nexus integrating inner sagely moral nurture and outer kingly social praxis. The preceding four cognitive and mental disciplines culminate entirely in the realization of self-cultivation, while the subsequent three social governance disciplines originate solely from perfected self-cultivation. This pivotal position unifies internal moral refinement and external social practice, preventing Confucian moral theory from degenerating into empty introspective mysticism and avoiding the hollow political rhetoric of social idealism disconnected from moral foundations.

Zhu Xi substantiates this pivotal status through dual dialectical frameworks of substance-function and root-branch ontology. In terms of substance and function, inner virtue cultivation constitutes the metaphysical substance of moral value, while external social undertakings constitute its phenomenal practical function. Without self-cultivation as the mediating pivot, inherent inner virtue cannot be translated into effective social practice, and all public governance loses its normative moral foundation. In terms of root and branch, self-cultivation is the foundational root of all social undertakings, while familial regulation, state governance, and universal pacification are its derivative branches. Zhu Xi insists absolutely that “disordered roots cannot yield flourishing branches”: corrupted foundational self-cultivation renders all social governance impossible, just as a rotten tree trunk cannot produce luxuriant foliage and fruitful outcomes.

Essentially, this pivotal mechanism embodies the comprehensive penetrative power of foundational virtue cultivation. Inner sagely disciplines complete the perfection of moral personality at the individual spiritual level, while outer kingly practices extend cultivated virtuous attainment to social and public domains. For Zhu Xi, virtue cultivation is never a private, individual spiritual affair, but a public normative enterprise with profound social and political significance. Perfected inner virtue necessarily radiates outward to influence family, society, and the state, making the quality of social and national governance a direct manifestation of individual and ruling moral attainment.

3.4 Outer Kingly Dimension: The Extended Praxis of Regulating Family, Governing State, and Pacifying the World

The core pivotal function of self-cultivation lies in externalizing internal perfected virtue into the outer kingly praxis of familial regulation, state governance, and universal pacification, thereby realizing the tangible social value of foundational virtue cultivation. Different from inward mental refinement, outer kingly practice expands progressively outward from the individual to the family, state, and global society, with every stage firmly grounded in prior personal self-cultivation.

Regulating the family constitutes the primary tier of outer kingly practice and the immediate social embodiment of virtue cultivation. As the fundamental cellular unit of society and the natural bridge connecting individual self-cultivation and national governance, the family serves as the most basic field of everyday moral practice. Those who faithfully practice filial piety, fraternal respect, and benevolent harmony within the family accomplish the first critical step of external virtue extension; by contrast, those incapable of regulating their own family through virtuous influence can never achieve effective state governance or popular edification. Familial regulation realizes moral edification through personal virtuous exemplariness, elevating the overall moral attainment of the household and actualizing the Confucian ideal of “edifying the entire state without stepping outside one’s family.” Domestic virtues of filial piety and fraternal deference naturally transform into civic loyalty and social integrity, laying a robust moral foundation for national political governance.

Governing the state constitutes the second tier of outer kingly practice, extending the virtuous logic of familial regulation to the broader domain of national political administration. The personal moral cultivation of rulers fundamentally determines the ultimate efficacy of state governance. Virtuous rulers extend familial benevolence to statecraft, implementing benevolent policies, reducing public fiscal burdens, and conducting universal moral edification for the populace. Without solid personal virtue, institutional coercion and punitive governance alone can never secure genuine popular obedience and long-term social stability. Zhu Xi advocates the governance paradigm of “transforming the populace through personal virtue”: rulers must first rectify their own conduct to establish universal moral exemplariness, then guide public morality and eliminate social vice to achieve enduring political order.

Pacifying the world constitutes the ultimate culmination of outer kingly practice, realizing the universal manifestation of bright virtue across the global society. Zhu Xi interprets “pacifying all under heaven” not as military domination or coercive territorial unification, but as universal moral edification that inspires all human beings to recover their innate bright virtue and achieve harmonious social order. The core practical principle underpinning this supreme ideal is the “measuring-square norm (xie ju zhi dao)” of empathic reciprocity, which advocates treating others as one wishes to be treated, eliminating selfish partiality, enabling universal proper placement of all individuals, and realizing public justice. This supreme governance ideal remains fundamentally grounded in foundational self-cultivation; only virtuous individuals who restrain selfish desire and uphold impartial justice can fully practice empathic reciprocity and accomplish universal peaceful order.

Through this progressive outer kingly sequence, Zhu Xi extends the logical system of “cultivating virtue as the foundation of moral cultivation” seamlessly from individual mind-nature cultivation to universal public governance. Inner sagely disciplines accomplish the internal perfection of individual virtue, while outer kingly practices realize the external social extension of perfected virtue. The eight-item system thus forms a complete, self-consistent, and closed-loop moral praxis system entirely anchored in the foundational principle of virtue cultivation.

IV. Moral Rationality Justification: Triple Theoretical Support from Ontology, Praxis Theory, and Political Ethics

Zhu Xi’s virtue foundationalism, constructed upon the Cheng Brothers’ “Gateway to Virtue Realm of Sagehood” thesis and The Great Learning’s eight-item framework, is not mere rhetorical moral exhortation, but a theoretically rigorous doctrinal system justified by three interlocking layers of rationality: ontological necessity, practical operability, and political ethical legitimacy.

4.1 Ontological Justification: Heavenly Principle Embodiment and Bright Virtue Restoration

The ultimate rationality of foundational virtue cultivation originates from Neo-Confucian cosmic ontology. Human virtue is the immanent embodiment of transcendent heavenly principle, and virtue cultivation constitutes humanity’s essential ontological duty to accord with cosmic principle and restore primordial human nature. Inheriting the Cheng Brothers’ core thesis that “human nature is principle,” Zhu Xi elaborated the classic Neo-Confucian theory of “one principle, manifold manifestations”: the singular, universal, and complete heavenly principle diversifies and instantiates itself in individualized human innate nature, just as a single moon is fully reflected in myriad rivers. All human virtuous nature essentially embodies the supreme and perfect heavenly principle.

As the immediate human manifestation of transcendent heavenly principle, bright virtue defines humanity’s essential moral ontology, thereby validating the absolute necessity of virtue cultivation. Heavenly principle constitutes the supreme, universally perfect normative ground of all cosmic existence. Virtue cultivation eliminates the selfish obscuration of turbid vital energy to fully manifest immanent heavenly principle within the self and achieve ultimate unity with the cosmic Dao. This moral obligation is not a man-made social convention, but a transcendent heavenly endowment and essential human destiny. Neglecting virtue cultivation means abandoning one’s heavenly-endowed nature, deviating from universal cosmic principle, and forfeiting the essential moral value of human existence.

Zhu Xi further consolidates this ontological justification through the critical distinction between the Dao-mind and the human-mind. The Dao-mind originates from heavenly-endowed nature and embodies pure, universal moral rationality; the human-mind derives from physical vital energy and contains mixed selfish desires and irrational impulses. In empirical existence, human transcendent Dao-mind is always obscured by the selfish human-mind. Virtue cultivation consists in preserving the sovereign dominance of the Dao-mind and restraining the arbitrary agitation of the human-mind, establishing moral rationality as the master of human consciousness. This theoretical transformation redefines moral cultivation from external behavioral discipline to internal ontological necessity, furnishing unshakable metaphysical grounding for the foundational status of virtue cultivation.

4.2 Praxis Justification: Moral Initiation and Perfection Through Integrated Inner-Outer Cultivation

The practical rationality of virtue foundationalism resides in the complete Cheng-Zhu praxis system of moral initiation and virtue perfection, which integrates principle investigation and reverent nurture to guarantee ordered, operable, and effective moral cultivation.

The dimension of “entering the Dao” represents the foundational transition from ignorant natural existence to conscious moral existence, with investigating things and extending knowledge as its primary disciplinary method. Obscured by turbid vital energy and selfish desires, ordinary people lack clear moral discernment and frequently confuse carnal desires with universal moral principles. Mere internal spiritual nurture without prior cognitive clarification leads to empty, aimless quietism and misguided moral judgment. Principle investigation and knowledge extension enlighten human moral cognition, clarify the boundary between good and evil, and establish correct practical orientation, enabling authentic initiation into moral life.

The dimension of “perfecting virtue” represents the ultimate completion of moral personality formation, with reverent internal nurture as its core disciplinary method. Independent principle investigation remains confined to theoretical cognition and cannot transform inherent personal character. Reverent nurture internalizes external principled knowledge into stable moral disposition through constant mental vigilance, preservation of quiescent innate nature, and rectification of manifest daily conduct. Sustained reverent discipline translates abstract moral knowledge into embodied virtuous character, accomplishing authentic moral perfection.

Zhu Xi stresses the inseparable and complementary relationship between cognitive exploration and internal nurture. Principle investigation provides rational normative guidance to prevent blind spiritual practice, while reverent nurture supplies an upright mental foundation to avoid empty intellectualism. Their organic integration guarantees progressive, orderly, and holistic moral praxis, avoiding the dual theoretical pitfalls of empty mystical enlightenment and fragmented external empirical learning, and fully validating the practical rationality of virtue foundationalism.

4.3 Political Ethical Justification: Root-Branch Hierarchy and Virtue-Ritual Centered Governance

The socio-political rationality of virtue foundationalism derives from The Great Learning’s root-branch political ethics, which organically integrates individual moral cultivation with social governance and national destiny to establish definitive normative political criteria.

The core of this political ethics lies in the inviolable root-branch hierarchical order: virtue cultivation constitutes the foundational root of national governance, while material wealth, institutional systems, and penal codes are secondary derivative branches. While affirming the legitimate value of economic development and material prosperity, Zhu Xi insists that fiscal prosperity must be permanently subordinated to moral governance. Only virtuous rule can secure popular support, stable livelihoods, and sustainable fiscal resources. Rulers who invert the root-branch order by prioritizing wealth accumulation over moral edification inevitably trigger social conflict and popular alienation, leading to long-term political crisis and governance collapse.

In practical governance, Zhu Xi transforms foundational virtue theory into the core paradigm of “governing through moral transformation.” Governor’s personal moral attainment fundamentally determines governance quality: virtuous rulers practice empathic reciprocity, implement benevolent policies, reduce public burdens, and inspire popular compliance through personal exemplariness. By contrast, governance relying solely on institutional coercion and punitive measures without moral foundation can never achieve genuine social harmony and popular recognition.

Zhu Xi further establishes the hierarchical relationship between virtue-ritual governance and policy-penalty governance. Virtue and ritual constitute the fundamental transformative governance that cultivates goodness at the source of human consciousness; policies and penalties constitute auxiliary remedial governance that restrains wrongful conduct. Sustainable long-term governance requires prioritizing moral edification and ritual cultivation while supplementing institutional punishment as a last resort. Abandoning the moral foundation of governance to rely solely on legal punishment maintains only superficial social order and triggers continuous societal moral decline. This integrated political ethical system elevates individual virtue cultivation into the foundational principle of national survival and social prosperity, completing the socio-political rationality justification of “cultivating virtue as the foundation of moral cultivation.”

V. Value Interpretation: Historical Status and Contemporary Enlightenment

Zhu Xi’s foundational virtue doctrine, synthesized from the Cheng School’s moral initiation theory and The Great Learning’s eight-item praxis framework, represents the pinnacle of traditional Confucian virtue ethics. It fundamentally reshaped the ideological development of late imperial China and continues to provide profound normative enlightenment for contemporary civic moral construction, national governance modernization, and social value reconstruction.

5.1 Historical Status: Neo-Confucian Systematic Reconstruction of the Confucian Virtue Tradition

The core historical contribution of Zhu Xi’s theory lies in its systematic Neo-Confucian reconstruction of the pre-Qin Confucian virtue tradition, which resolved the theoretical crisis confronting Confucian ethics amid the medieval ideological dominance of Buddhism and Taoism. Pre-Qin Confucianism consistently prioritized personal self-cultivation: Confucius advocated virtue-centered governance, Mencius established individual cultivation as the root of social governance, and The Great Learning summarized the complete logical sequence of self-cultivation and universal governance. Nevertheless, Han-Tang Confucian virtue discourse remained confined to practical interpersonal and political ethics, lacking robust metaphysical ontological grounding and systematic procedural praxis. Meanwhile, Buddhism advocated the illusoriness of mundane existence and transcendental spiritual liberation, while Taoism pursued eremitic transcendence and immortality. Both marginalized mundane moral cultivation and undermined the social-normative authority of Confucian ethics.

The Cheng Brothers initiated the Confucian intellectual revival by canonizing The Great Learning as the foundational Gateway to Virtue Realm of Sagehood to counter heterodox thought. Zhu Xi consummated this revival through comprehensive systematic theoretical construction. Centering on the metaphysics of heavenly principle, he integrated cosmology, mind-nature theory, cultivation praxis, and political philosophy, anchoring Confucian virtue ethics in transcendent cosmic ontology and supplying robust metaphysical grounding. He systematized the eight-item progressive praxis sequence, transforming scattered abstract moral maxims into operable lifelong cultivation disciplines for all scholars. Through distinguishing heavenly-endowed nature and temperamental nature, as well as Dao-mind and human-mind, he resolved classical Confucian theoretical dilemmas regarding the origin, necessity, and methodology of moral cultivation, elevating traditional Confucian virtue discourse from fragmented practical norms to a self-consistent Neo-Confucian theoretical system.

This theoretical reconstruction elevated The Great Learning to a canonical status superior among the Four Books and established “cultivating virtue as the foundation of moral cultivation” as the core normative paradigm of post-Song Confucianism. Following the Yuan Dynasty’s 1313 institutional reform, Zhu Xi’s Four Books Commentary became the official standard for imperial civil service examinations, shaping literati self-cultivation and state governance for nearly seven hundred years. It molded the traditional Chinese intellectual ideal of inner sageliness and outer kingliness, structured ancient social governance models and popular value orientations, and formed the core theoretical pillar of China’s traditional virtue-centered cultural spirit.

5.2 Contemporary Enlightenment: Practical Reference for Civic Moral Construction and Modern Governance

As the quintessential essence of traditional Chinese moral civilization, Zhu Xi’s foundational virtue doctrine offers multi-dimensional normative enlightenment for contemporary civic moral construction, modern national governance system optimization, and social value consensus reconstruction.

First, it provides a complete knowledge-action integrated cultivation path for contemporary civic moral construction. Zhu Xi’s praxis theory emphasizes progressive moral development from rational cognitive clarification to habitual internalization, effectively addressing the prevalent modern disjunction between abstract moral knowledge and concrete moral action. Contemporary moral education should transcend superficial ideological propaganda, integrate rational principle learning and daily practical nurture, and guide citizens to internalize universal moral norms through routine interpersonal and social practice. Meanwhile, its universal egalitarian moral principle reinforces the modern requirement of equal moral accountability for all social strata, consolidating societal moral consensus and optimizing the overall civic ethical climate.

Second, it supplies traditional normative resources for the modern integration of rule of law and rule of virtue. Zhu Xi’s core logic of prioritizing moral transformation over punitive coercion resonates closely with contemporary national governance philosophy. Legal institutions provide rigid external behavioral constraints, while moral ethics offer internal normative self-regulation, both indispensable to comprehensive modern governance. Modern statecraft must uphold the exemplary role of governors’ personal moral cultivation, strengthen universal civic moral edification alongside institutional legal improvement, and realize comprehensive governance rooted in moral nurture and assisted by legal restraint. Additionally, the empathic reciprocity of the measuring-square principle provides critical normative guidance for contemporary public policy formulation, correcting the modern deviation of prioritizing economic indicators over people’s wellbeing and realizing the creative modern transformation of the traditional “virtue as root, wealth as branch” principle.

Third, it establishes a classical value criterion for rectifying contemporary profit-oriented moral alienation. Zhu Xi’s righteousness-profit dialectic does not negate the legitimacy of moderate material pursuit, but insists on the absolute priority of moral righteousness and the normative restriction of profit-seeking behavior. This provides an effective theoretical remedy for market economy-induced money worship and extreme egoism. It guides individuals, enterprises, and public institutions to conduct legitimate profit-seeking within legal and moral boundaries, balance material development and spiritual moral cultivation, and construct healthy, rational, and sustainable contemporary social value systems.

In summary, Zhu Xi’s doctrine of “cultivating virtue as the foundation of moral cultivation” constitutes a holistic, rigorous, and systematic Neo-Confucian virtue ethics system, rather than fragmented moral viewpoints or isolated political arguments. Inheriting the Cheng Brothers’ “Gateway to Virtue Realm of Sagehood” thesis and systematically interpreting the Three Cardinal Principles and Eight Items framework of The Great Learning, it constructs an integrated theoretical system that bridges ontology and phenomenal existence, mental cultivation and political praxis, and individual spiritual life and mundane daily practice. Centered on heavenly principle as the ultimate value origin, grounded in mind-nature theory as the immanent existential basis, structured by the eight-item progressive praxis sequence, sustained by the complementary disciplines of principle investigation and reverent nurture, and extended through the self-cultivation-to-universal-governance sequence, this doctrine achieves triple-layered moral rationality justification at the ontological, practical, and political ethical levels.

The two preliminary foundational studies form a mutually complementary holistic system: the first establishes the macroscopic theoretical framework of the doctrine’s core connotation and classical basis, while the second verifies its microscopic logical legitimacy through academic genealogy and textual exegesis. Macroscopic theoretical interpretation and microscopic textual verification jointly construct the complete theoretical panorama of Zhu Xi’s virtue foundationalism.

Zhu Xi’s core theoretical contribution lies in elevating the scattered pre-Qin Confucian discourse of individual self-cultivation to a universal foundational ethical principle that unites heaven and humanity, as well as inner sageliness and outer kingliness, accomplishing the Neo-Confucian transformation and theoretical sublimation of traditional Confucian virtue thought. This doctrine embodies the core essence of traditional Chinese moral culture. Its profound dialectics of root-branch priority, internal-external moral unity, and individual-social moral correlation provide irreplaceable theoretical resources for contemporary civic moral construction, modern national governance optimization, and social value consensus cultivation. Its rigorous internal logical consistency fully demonstrates the profound theoretical depth of traditional Confucian virtue ethics, serving as a crucial theoretical medium for understanding Chinese virtue civilization and realizing the creative inheritance and innovative development of traditional excellent Chinese culture.

Zhu Xi’s Virtue-Centered System

Cheng Brothers’ Gate of Entering Virtue

 Eight Items and Self-Cultivation as Root

Neo-Confucian Justification of Moral Legitimacy

Inner Sagehood, Outer Kingship, and Contemporary Relevance