大卫·休谟《人性论》第三卷
对应原著部分：Book III, Part III（Of Justice）
中文部分（高度概括）
在《人性论》第三卷第三部分中，休谟专门讨论正义问题，并将其与一般道德情感区分开来。他指出，正义并非源自自然情感，而是一种人为的德性，其产生依赖于特定的社会条件。
休谟认为，正义之所以必要，是因为三项事实条件同时存在：资源有限、人类自利倾向明显、以及人类并非完全利他。在这种情况下，仅靠自然情感不足以维持社会秩序，于是人们通过约定与规则来稳定财产、履行承诺，并协调行为。
因此，正义并非像仁慈那样直接源于情感，而是通过社会实践逐渐建立起来的制度性德性。规则本身最初并非因其道德性而被遵守，而是因为其公共效用。当这些规则被长期遵循，其效用通过同情机制被普遍感受，正义才获得道德评价。
休谟的结论是，正义的道德性并非原初属性，而是建立在社会有用性基础之上的次生评价。
本单元问题与回答（15 题）
问 1：第六单元在《人性论》中对应哪一部分？
答：第三卷第三部分，专门讨论正义。
问 2：休谟如何区分正义与其他德性？
答：将正义视为人为德性，而非自然德性。
问 3：什么是自然德性？
答：直接源于人类自然情感的德性，如仁慈。
问 4：什么是人为德性？
答：依赖社会规则与约定而形成的德性。
问 5：正义为何不是自然德性？
答：因为它不直接源于自然情感。
问 6：正义产生依赖哪些条件？
答：资源有限、自利倾向和有限的利他性。
问 7：在这些条件下会出现什么问题？
答：社会秩序无法仅靠自然情感维持。
问 8：正义规则是如何产生的？
答：通过社会约定与实践逐渐形成。
问 9：财产权在正义中扮演什么角色？
答：是正义规则的重要内容之一。
问 10：承诺为何需要正义规则？
答：因为承诺的履行需要稳定的社会预期。
问 11：正义规则最初为何被遵守？
答：因为它们具有公共效用。
问 12：正义如何获得道德评价？
答：通过同情机制感知其社会效用。
问 13：正义的道德性是原初的吗？
答：不是，是次生的。
问 14：正义是否依赖理性发现？
答：不依赖，而依赖社会实践。
问 15：本单元的核心结论是什么？
答：正义是一种基于社会有用性的人为德性。
Study Notes · Unit Six
David Hume, A Treatise of Human Nature
Corresponding section: Book III, Part III (Of Justice)
In Book III, Part III of the Treatise, Hume offers a focused account of justice and distinguishes it from other moral virtues. He argues that justice is not a natural virtue but an artificial one, arising only under specific social conditions.
According to Hume, justice becomes necessary because of three circumstances: the scarcity of resources, the predominance of self-interest, and the limited extent of human benevolence. Under these conditions, natural sentiments alone are insufficient to sustain social order, and rules are introduced through convention to regulate property, promises, and conduct.
Justice therefore differs from virtues such as benevolence, which arise directly from natural feeling. Rules of justice are initially followed not because they are perceived as morally good, but because they serve the public interest. Over time, their utility is felt through sympathy, and justice acquires moral approval.
Hume concludes that the moral status of justice is not original but derived from its social usefulness.
Questions and Answers (Unit Six)
Question 1: Which part of the Treatise does this unit correspond to?
Answer: Book III, Part III, which focuses on justice.
Question 2: How does Hume distinguish justice from other virtues?
Answer: He classifies justice as an artificial virtue rather than a natural one.
Question 3: What is a natural virtue?
Answer: A virtue that arises directly from natural human sentiments, such as benevolence.
Question 4: What is an artificial virtue?
Answer: A virtue that depends on social rules and conventions.
Question 5: Why is justice not a natural virtue?
Answer: Because it does not arise directly from natural sentiment.
Question 6: On what conditions does justice depend?
Answer: Scarcity of resources, self-interest, and limited benevolence.
Question 7: What problem arises under these conditions?
Answer: Social order cannot be maintained by natural sentiments alone.
Question 8: How do rules of justice emerge?
Answer: Through social convention and practice.
Question 9: What role does property play in justice?
Answer: It is a central object of rules of justice.
Question 10: Why do promises require rules of justice?
Answer: Because their fulfillment depends on stable social expectations.
Question 11: Why are rules of justice initially followed?
Answer: Because they promote public utility.
Question 12: How does justice acquire moral approval?
Answer: Through sympathy with its social usefulness.
Question 13: Is the morality of justice original?
Answer: No, it is secondary.
Question 14: Does justice depend on rational discovery?
Answer: No, it depends on social practice.
Question 15: What is the central conclusion of this unit?
Answer: Justice is an artificial virtue grounded in social utility.
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