对应原著部分：Book III（Of Morals），重点涵盖 Part I–II
《人性论》第三卷中，休谟系统讨论道德判断的来源与性质。本卷的核心主张是，道德区分并非源自理性，而是源自情感。理性只能发现事实与关系，却不能产生“应当”或“善恶”的评价。
休谟首先区分事实判断与价值判断。他指出，道德评价并不是对事物性质的描述，而是一种伴随行为观念而产生的情感反应。因此，道德并非被发现于对象之中，而是产生于观者的情感结构之中。
在此基础上，休谟提出，道德判断的直接根源是同情（sympathy）。人类能够通过同情，将他人的感受纳入自身的情感经验，从而形成对行为的赞许或反感。正是这种情感机制，使得道德评价具有一定的普遍性，而不完全沦为个人偏好。
因此，道德并不是理性的产物，而是建立在激情、情感与人类共同心理结构之上的实践性现象。
本单元问题与回答（15 题）
问 1：第五单元在《人性论》中对应哪一部分？
答：第三卷（Of Morals），重点是第一与第二部分。
问 2：第三卷讨论的核心问题是什么？
答：道德判断的来源与性质。
问 3：休谟是否认为道德源自理性？
答：不认为。
问 4：理性在道德中的作用是什么？
答：提供事实与关系的认识。
问 5：什么不能由理性产生？
答：善恶与应当的评价。
问 6：道德判断属于哪一类判断？
答：价值判断。
问 7：道德评价是否描述对象的性质？
答：不是。
问 8：道德评价本质上是什么？
答：一种情感反应。
问 9：什么是同情（sympathy）？
答：对他人情感的感受与分享能力。
问 10：同情在道德中起什么作用？
答：使道德评价具有扩展性与稳定性。
问 11：道德是否完全主观？
答：不是，因为同情建立在共同的人类心理结构上。
问 12：休谟是否否认道德规则的存在？
答：没有。
问 13：道德规则的基础是什么？
答：情感与社会心理机制。
问 14：这一理论是否排除理性参与道德讨论？
答：不排除，但限制其角色。
问 15：本单元的核心结论是什么？
答：道德根源于情感，而非理性。
Study Notes · Unit Five
David Hume, A Treatise of Human Nature
Corresponding sections: Book III (Of Morals), mainly Parts I–II
In Book III of the Treatise, Hume examines the origin and nature of moral judgment. His central claim is that moral distinctions are not derived from reason but from sentiment. Reason can discover facts and relations, but it cannot generate judgments of virtue, vice, or obligation.
Hume distinguishes factual judgments from moral evaluations. Moral judgments do not describe properties of objects; rather, they express emotional responses that arise when we contemplate actions and characters. Morality, therefore, is not found in the object but in the observer’s sentiment.
Hume further argues that sympathy is the key mechanism underlying moral judgment. Through sympathy, individuals share in the feelings of others, allowing moral approval and disapproval to extend beyond private interest. This shared psychological structure gives moral judgments a degree of generality.
Accordingly, morality is grounded not in reason but in passions, sentiments, and common human psychology.
Questions and Answers (Unit Five)
Question 1: Which part of the Treatise does this unit correspond to?
Answer: Book III, Of Morals, mainly Parts I and II.
Question 2: What is the central concern of Book III?
Answer: The origin and nature of moral judgment.
Question 3: Does Hume think morality is derived from reason?
Answer: No.
Question 4: What role does reason play in morality?
Answer: It identifies facts and relations.
Question 5: What cannot be produced by reason?
Answer: Judgments of virtue, vice, and obligation.
Question 6: What type of judgment is a moral judgment?
Answer: A value judgment.
Question 7: Do moral judgments describe properties of objects?
Answer: No.
Question 8: What are moral judgments fundamentally?
Answer: Emotional responses.
Question 9: What is sympathy?
Answer: The capacity to feel and share the emotions of others.
Question 10: What role does sympathy play in morality?
Answer: It extends and stabilizes moral evaluation.
Question 11: Is morality entirely subjective?
Answer: No, because sympathy rests on shared human psychology.
Question 12: Does Hume deny the existence of moral rules?
Answer: No.
Question 13: What grounds moral rules?
Answer: Sentiment and social psychological mechanisms.
Question 14: Does this theory exclude reason from moral discussion?
Answer: No; it limits its role.
Question 15: What is the central conclusion of this unit?
Answer: Morality originates in sentiment rather than in reason.
Discover more from Geoffrey Chen
Subscribe to get the latest posts sent to your email.