四端之心与四大契约底线：道德从内生长还是由外约定？

English

What ultimately holds a society together? This is among political philosophy and ethics’ oldest questions. Two fundamentally different answers have each generated deep traditions, one in China and one in the West: the first says that the source of morality lies within the human heart — every normal person possesses certain moral “seeds,” and social order grows from these innate moral capacities; the second says that the foundation of morality lies in agreements between people — social order is established through rational individuals’ mutual commitments and promises. Mencius’s (c. 372-289 BCE) “Four Moral Sprouts” is the most classical expression of the first; the Western social contract tradition’s four foundational principles — liberty, equality, good faith, and accountability — is the most systematic expression of the second. Placing these two sets of four side by side opens a cross-civilizational conversation about human nature, moral foundations, and the bases of social life.

中文

维系一个社会的正常运转，最终依赖什么？这是政治哲学与伦理学最古老的问题之一。两种根本不同的回答，分别在中国与西方形成了各自深厚的传统：一种说，道德的根源在人的内心——每个正常的人心中都有若干道德的“种子”，社会秩序由这些内在的道德能力生长而来；另一种说，道德的基础在人与人之间的协议——社会秩序由理性的个体彼此约定、相互承诺而建立。孟子（约公元前372-前289年）的“四端之心”是前者最经典的表述；西方社会契约论传统（从洛克、卢梭到现代的罗尔斯）对处世底线的归纳——自由、平等、诚信、权责——是后者最系统的表达。将两组“四”并置比较，是一次关于人性、道德与社会基础的跨文明对话。

Mencius’s Four Sprouts: The Seeds of Morality Are Already There

孟子四端：道德的种子在人心

English
In Mencius (Gong Sun Chou I), Mencius proposes the celebrated “four sprouts” (siduan, 四端): the sprout of compassion (ceyin) is the beginning of humaneness (ren); the sprout of shame and aversion (xiuwu) is the beginning of righteousness (yi); the sprout of deference and yielding (cishu) is the beginning of ritual propriety (li); the sprout of moral judgment (shifei) is the beginning of wisdom (zhi). The character duan means “sprout, beginning” — the four sprouts are not completed virtues but the seeds of virtue: the nascent state of moral-emotional capacities that human beings possess innately.

To establish the compassion sprout, Mencius uses a famous thought experiment: if anyone suddenly saw a young child about to fall into a well, they would immediately experience alarm and distress. This reaction requires no deliberation, arises from no calculation of profit or reputation — it is humanity’s most primal moral emotion. Even a morally deficient person would not feel nothing in this situation. The universality of this feeling is evidence that the sprout of ren (humaneness) exists in every human heart. The shame sprout: feeling ashamed at one’s own wrongdoing, and feeling aversion toward others’ wrongdoing, is itself proof that an internal moral standard exists. The deference sprout: the natural tendency to yield and give way to others in interpersonal situations is the nascent form of ritual propriety. The moral-judgment sprout: the capacity to distinguish right from wrong, correct from incorrect, is innately present in every human being.

Mencius’s core argument: these four capacities are innate, not learned — “humans possessing these four sprouts is like humans having four limbs.” The moral question is not how to establish morality from nothing but how to cultivate and expand these already-existing moral seeds, just as agriculture’s task is not to create the land’s fertility but to cultivate it and allow it to fully develop.

中文
孟子在《孟子·公孙丑上》中提出了著名的“四端”论：恻隐之心，仁之端也；羞恶之心，义之端也；辞让之心，礼之端也；是非之心，智之端也。“端”字意为“萌芽、开端”——四端不是完成的美德，而是美德的种子，是人天生就具备的道德情感能力的萌芽状态。

恻隐之心——对他人痛苦的本能同情。孟子用一个著名的思想实验来说明：一个人忽然看见一个小孩将要落入井中，必然会产生惊悚恻隐之情，这种反应不需要思考，不出于功利计算，是人类最原初的道德情感。即便是道德上有缺失的人，也不会对此毫无感觉——这种感觉的普遍性，是人心中“仁”之萌芽存在的证据。羞恶之心——对自身不当行为的羞耻感与对他人恶行的厌恶感，是“义”的萌芽。孟子认为，人对做出不道德行为会感到羞耻，这种羞耻感本身就是内在道德标准存在的证明。辞让之心——对他人的谦让与退让意愿，是“礼”的萌芽，是人际关系中“以他人为先”的自然倾向。是非之心——对是与非、对与错的辨别能力，是“智”的萌芽，人天生就具备基本的道德判断能力。

孟子的核心论点是：这四种能力是人天生就有的，而非后天习得的——“人之有是四端也，犹其有四体也”（人拥有这四端，就像拥有四肢一样自然）。道德的问题不是“如何从零开始建立道德”，而是“如何培育和扩充这些已经存在的道德种子”，就如同农业的任务不是创造土地的肥力，而是培育它、使之充分发展。

Four Contract Principles: Moral Boundaries Are Agreed Upon

四大契约底线：道德的边界由协议划定

English
The Western social contract tradition (from Locke’s Two Treatises of Government, 1689, and Rousseau’s Social Contract, 1762, to Rawls’s A Theory of Justice, 1971) proposes a different foundation for morality: in the “state of nature,” people are free but potentially conflicting individuals who, through rational deliberation, agree to surrender certain natural freedoms in exchange for the security and order guaranteed by rules. This agreement is the social contract, and its core foundational principles can be summarized in four.

Liberty: every person possesses inalienable basic freedoms — of thought, expression, belief, and action — limited only by others’ equivalent freedoms. Entering the social contract is for the protection, not the surrender, of freedom. Equality: parties to the contract enjoy equal standing in law and basic rights; no one is born with authority over others. Good Faith: parties must engage with honesty and trustworthiness in fulfilling their commitments; deception and betrayal fundamentally undermine the very possibility of contract. Accountability: those who exercise power must be answerable for their actions; power and responsibility must be matched — power without accountability is a fundamental violation of contractual spirit.

These four principles ultimately rely on the design and maintenance of external institutions: law protects liberty, constitution establishes equality, contract law enforces good faith, oversight mechanisms implement accountability. They constitute a proposal about how external rule systems between people should be designed — not a proposal about what people’s hearts should be like.

中文
西方社会契约论传统（从洛克《政府论》1689年、卢梭《社会契约论》1762年，到20世纪罗尔斯《正义论》1971年）提出了一种不同的道德基础论：人在“自然状态”下是自由但可能相互冲突的个体，为了和平共处，人们通过理性协商，放弃部分自然自由，换取由规则保障的安全与秩序——这个协议就是社会契约，契约的核心底线，可以归纳为四项原则。

自由：每个人拥有不可剥夺的基本自由——思想、言论、信仰、行动的自由，只要不侵犯他人的同等自由。这是契约的第一前提：人们进入社会契约，是为了保护而非放弃自由。平等：契约的各方在法律与基本权利层面享有平等地位，没有人天生拥有凌驾于他人之上的权利。诚信：契约各方必须以诚实、守信的态度履行约定，欺骗与背信行为根本上破坏了契约的可能性基础。权责：权力的行使者必须对其行为承担责任，权力与责任必须匹配——无责任的权力，是对契约精神的根本违背。

这四项原则最终都落脚于“外部制度”的设计与维护：法律保障自由、宪法规定平等、合同法约束诚信、监督机制落实权责。它们构成的是一套关于“人与人之间的外部规则体系应当如何设计”的方案，而非关于“人内心应当如何”的方案。

The Deepest Difference

两组“四”的深层差异

English
The most fundamental contrast between the four sprouts and four contract principles can be stated in one sentence: the four sprouts assume human hearts tend toward goodness and need cultivation; the contract principles assume humans may conflict with each other and need regulation.

The four sprouts’ moral logic is “inside-out”: moral capacity exists within every person’s heart, and moral realization is the self-expansion and maturation of this inner capacity (“expand and fill it out,” in Mencius’s words). If every person fully cultivated their four sprouts, social order would naturally emerge. This logic’s ultimate premise: human nature is basically good; external rules assist but cannot replace inner morality. The contract principles’ moral logic is “outside-in”: moral norms are external constraint systems that rational self-interested individuals establish through deliberation upon recognizing the danger of mutual conflict. This logic’s ultimate premise: human beings are self-interested rational actors who require external institutions to coordinate behavior.

This contrast is not a question of which is better but of what each can explain and where each has limits. The four sprouts theory’s strength: it explains why human societies maintain basic moral order even in the absence of law — because the moral seeds are in every human heart. Its limitation: if someone’s four sprouts are congenitally deficient or subsequently damaged, relying purely on internal moral self-discipline is clearly insufficient. The contract theory’s strength: it provides operational, verifiable institutional design principles that do not depend on optimistic assumptions about human nature. Its limitation: purely external rule-based constraint cannot cover every situation requiring moral judgment — rules are finite while real situations are infinite, and in the gaps between rules, what is ultimately relied upon is precisely human inner judgment.

中文
将孟子四端与西方四大契约底线并置，最核心的差异可以用一句话概括：四端假设人心向善，需要的是培育；契约底线假设人可能相互冲突，需要的是规制。

四端的道德论是“由内而外”的：道德能力存在于每个人的内心，道德的实现是这种内在能力的自我扩充与成熟（“扩而充之”，孟子语）。如果每个人都充分培育了自己的四端，社会秩序就会自然形成。这种逻辑的终极预设是：人性本善，外在规则是内在道德的辅助，而非替代。契约底线的道德论是“由外而内”的：道德规范是理性的个体在认识到相互冲突的危险后，通过协商建立的外部约束体系。这种逻辑的终极预设是：人是自利的理性个体，需要外部制度来协调彼此的行为。

但这个对比不是“哪种更好”的问题，而是“两者各自能解释什么、各自存在什么局限”的问题。四端理论的力量在于：它解释了为什么人类社会即使在法律缺失的情况下仍然存在基本的道德秩序——因为人心中有这些道德的种子。它的局限在于：如果有人的“四端”先天不足或后天被损毁，纯粹依赖内在道德自律显然是不够的。契约底线理论的力量在于：它提供了可操作的、可验证的制度设计原则，不依赖于对人性的乐观假设。它的局限在于：纯粹外部规则的约束，无法覆盖所有需要道德判断的情境——规则是有限的，而现实情境是无限的，在规则与规则之间的空白处，最终依赖的仍然是人的内在判断。

Complementary, Not Opposed

互补而非对立

English
A mature modern civilization in practice requires both moral logics simultaneously. A society with four sprouts cultivation but without contract institutions is fragile in the face of human weakness and external pressure; a society with contract institutions but without inner moral culture falls into the trap of “comply because you must, not because you think it right” — producing ubiquitous “compliant but unethical” behavior. The four sprouts and the four contract principles complementarily cover the two necessary layers of moral life: the four sprouts address the source of moral motivation (why would a person want to be good?); the contract addresses the normalization and protection of moral behavior (how to ensure that even those who don’t want to be good cannot freely harm others).

Mencius himself articulated this dual necessity with striking precision: “Goodness alone is insufficient for governance; law alone cannot implement itself.” A single sentence, written twenty-three centuries ago, captures exactly each tradition’s necessity and limitation. The compassion sprout and equal rights; the moral-judgment sprout and accountability mechanisms — these pairs are not adversaries but potential dialogue partners: the sprouts provide the emotional motivation that animates the external framework; the framework provides the institutional protection within which the sprouts can be safely cultivated. A society that combines a richly cultivated inner moral culture with a well-designed external contract system may be a more ideal arrangement — not a reality that exists anywhere yet, but a goal worth continuous pursuit.

中文
一个成熟的现代文明，事实上需要同时依赖这两种道德逻辑。只有四端而没有契约制度的社会，在人性的弱点与外部压力面前会显得脆弱；只有契约制度而没有内在道德文化的社会，则会陷入“守规则是为了不被惩罚，而非因为认为规则是对的”的困境，导致无处不在的“合规而不道德”的现象。

孟子的四端理论与西方契约底线理论，恰好以互补的方式覆盖了道德生活的两个必要层面：四端关注的是道德动机的来源（为什么人会想要做好人），契约关注的是道德行为的规范与保障（如何确保即使不想做好人的人也不能任意伤害他人）。孟子曾说“徒善不足以为政，徒法不能以自行”——单纯的善良不足以治理国家，单纯的法律不能自动执行自己——这句话以两千三百年前的语言，精确地说出了这两种道德逻辑各自的必要性与局限。

“恻隐之心”与“平等权利”，“是非之心”与“权责机制”——这两组概念不是敌对的，而是可以对话的：前者为后者提供了道德的情感动力，后者为前者提供了制度的保障框架。一个既有充分培育的内在道德文化，又有完善的外部契约制度的社会，或许是一种较理想的形态——这不是一个已经存在的现实，而是一个值得持续追求的目标。

Four Moral Sprouts vs Four Contract Principles – Does Ethics Grow from Inside or Outside? | Great Four 四端之心与四大契约底线：道德从内生长还是由外约定？