📚 AS WJEC Philosophy: Core Knowledge Review | AS WJEC 哲学：核心知识点梳理
The AS WJEC Philosophy course introduces students to fundamental questions about knowledge, morality, and the existence of God. This article summarises the core knowledge points that every student should master, including rationalism vs empiricism, the tripartite definition of knowledge, ethical theories such as utilitarianism, Kantian ethics, virtue ethics, and arguments for and against God’s existence. Each section provides a clear overview to support revision and exam preparation.
AS WJEC 哲学课程引导学生探究关于知识、道德和上帝存在的基本问题。本文梳理了每位学生必须掌握的核心知识点，包括理性主义与经验主义、知识的三要素定义、功利主义、康德伦理学、美德伦理学等伦理理论，以及关于上帝存在的论证与反驳。每个部分都提供清晰概述，助力复习与备考。
1. Rationalism and Empiricism | 理性主义与经验主义
Rationalism claims that reason is the primary source of knowledge, and that certain concepts and truths are innate. Empiricism argues that all knowledge comes from sense experience. Key rationalists include Descartes, who used methodological doubt to arrive at ‘I think, therefore I am’, and argued for innate ideas of God and the self. Empiricists like Locke rejected innate ideas, proposing the mind as a tabula rasa at birth, with simple ideas derived from sensation and reflection acquiring complex ideas. Hume further distinguished impressions and ideas, and argued that all meaningful ideas must be traceable to sense experience.
理性主义主张理性是知识的主要来源，某些概念和真理是天赋的。经验主义则认为所有知识来自感官经验。主要理性主义者包括笛卡尔，他采用方法论怀疑得出 “我思故我在”，并论证上帝和自我的天赋观念。经验主义者如洛克拒绝天赋观念，提出心灵出生时是一块白板，简单观念来自感觉与反省，进而形成复杂观念。休谟进一步区分印象与观念，并主张所有有意义的观念必须能追溯到感官经验。
Rationalism relies on a priori reasoning; empiricism relies on a posteriori evidence. This debate is central to epistemology.
理性主义依赖先天推理；经验主义依赖后天证据。这一争论是认识论的核心。
2. A Priori and A Posteriori Knowledge | 先天知识与后天知识
A priori knowledge is independent of experience, true by reason alone (e.g., mathematical truths like 2+2=4). A posteriori knowledge depends on empirical evidence (e.g., ‘water boils at 100°C’ at sea level). The analytic/synthetic distinction is often linked: analytic truths are true by definition (a priori), while synthetic truths require checking against the world (a posteriori). Kant introduced synthetic a priori judgments, claiming that some knowledge (such as causality) is both informative and independent of experience. Understanding these classifications helps evaluate philosophical arguments.
先天知识独立于经验，仅凭理性即可为真（例如数学真理 2+2=4）。后天知识依赖于经验证据（例如 “水在 100°C 沸腾”）。分析/综合区分常与之相关：分析真理按定义即为真（先天），而综合真理需要与世界核对（后天）。康德提出了先天综合判断，主张某些知识（如因果性）既具有信息内容，又独立于经验。理解这些分类有助于评价哲学论证。
Philosophers often ask whether moral or religious knowledge can be a priori.
哲学家常问道德或宗教知识能否是先天。
3. The Tripartite Definition and Gettier Cases | 三要素定义与葛梯尔案例
The traditional definition of knowledge is justified true belief (JTB): S knows that P if and only if (1) P is true, (2) S believes that P, and (3) S is justified in believing that P. Edmund Gettier’s famous counterexamples showed that JTB is not sufficient for knowledge. In a classic Gettier-type case, a person forms a justified true belief that is only accidentally true (e.g., based on a misleading clock that just happens to be correct). This sparked debate over what additional condition is needed, such as reliable causation or no false lemmas. For AS exams, you need to explain JTB and at least one Gettier-style counterexample, and discuss responses like the no false lemma condition or reliabilism.
传统的知识定义是确证的真信念（JTB）：S 知道 P 当且仅当 (1) P 为真，(2) S 相信 P，且 (3) S 有合理理由相信 P。埃德蒙·葛梯尔的著名反例表明，JTB 不足以构成知识。在典型的葛梯尔案例中，一个人形成了合理真信念，但该信念只是偶然为真（例如，基于一个恰好走准的坏钟）。这引发了争论，思考需要添加什么条件，如可靠的因果过程或无假前提条件。AS 考试中，你需要解释 JTB 并至少给出一例葛梯尔式反例，讨论无假前提条件或可靠主义等回应。
4. Scepticism and Perception | 怀疑论与知觉
Philosophical scepticism questions whether we can have any knowledge about the external world. Global scepticism argues that it is possible we are deceived by an evil demon (Descartes) or are brains in vats, so our sensory beliefs could be entirely false. Local scepticism might target specific areas such as induction (Hume). Perceptual theories like direct realism, indirect realism, and idealism offer different responses. Direct realism claims we perceive objects directly; indirect realism says we perceive sense-data caused by objects; idealism denies mind-independent matter. In WJEC, you may also explore the argument from illusion and hallucination. Evaluating whether perceptions provide reliable knowledge is essential.
哲学怀疑论质疑我们能否拥有关于外部世界的任何知识。全面怀疑论主张，我们可能被邪恶妖魔欺骗（笛卡尔），或者是缸中之脑，因此我们的感官信念可能完全为假。局部怀疑论可能针对特定领域，如归纳（休谟）。知觉理论如直接实在论、间接实在论和唯心论提供了不同回应。直接实在论声称我们直接感知对象；间接实在论认为我们感知由对象引起的感知材料；唯心论否认独立于心灵的物质。WJEC 考试中，你可能还需探讨幻觉论证与错觉论证。评价知觉是否提供可靠知识至关重要。
5. Utilitarianism | 功利主义
Utilitarianism is a consequentialist ethical theory stating that the right action is the one that maximises overall happiness or ‘utility’. Jeremy Bentham proposed act utilitarianism, focusing on the quantity of pleasure calculated by the hedonic calculus (intensity, duration, certainty, propinquity, fecundity, purity, extent). John Stuart Mill refined the theory, arguing for higher and lower pleasures, asserting ‘it is better to be a human being dissatisfied than a pig satisfied’. Rule utilitarianism (Mill) suggests that we should follow rules that tend to promote the greatest happiness. Strengths include its apparent simplicity and fairness; weaknesses include the problem of measuring happiness, the challenge of justice (e.g., the tyranny of the majority), and the demandingness of impartiality. Understanding how to apply utilitarian reasoning to moral dilemmas is a core skill.
功利主义是一种后果论伦理理论，主张行为的道德正确性取决于它是否最大化总体幸福或 “效用”。杰里米·边沁提出了行为功利主义，注重快乐的数量，通过快乐计算（强度、持续时间、确定性、近远性、丰富性、纯度、范围）衡量。约翰·斯图亚特·密尔完善了该理论，主张高低快乐之分，声言 “宁做不满的人，不做满足的猪”。规则功利主义（密尔）建议我们应遵循那些倾向于促进最大幸福的规则。其优势包括表面的简洁性与公平性；弱点包括幸福难以衡量、正义的挑战（如多数人的暴政），以及公正性要求过高。理解如何将功利主义推理应用于道德困境是核心技能。
6. Kantian Ethics | 康德伦理学
Immanuel Kant’s deontological ethics emphasises duty and the categorical imperative, rather than consequences. The categorical imperative has several formulations. The first formulation: ‘Act only on that maxim through which you can at the same time will that it should become a universal law.’ This universalisability test exposes contradictions in conception (e.g., making a false promise) or in will. The second formulation, the humanity formula: ‘Act so that you treat humanity, whether in your own person or in that of another, always as an end and never merely as a means.’ Kantian ethics also stresses autonomy, acting from reason and duty rather than inclination. For AS, you need to explain these principles, apply them to issues like lying or stealing, and evaluate strengths (respect for persons, universal standards) and weaknesses (conflicting duties, rigidity, lack of guidance on imperfect duties).
伊曼努尔·康德的义务论伦理学强调义务与绝对命令，而非后果。绝对命令有几个表述。第一表述：”只按照你同时能够愿意它成为一个普遍法则的准则去行动。” 这个可普遍化检验揭露了构思上的矛盾（如做出虚假承诺）或意愿上的矛盾。第二表述，即人性公式：”你要如此行动，即无论是你自身的人格中还是他人的人格中，永远把人当作目的，而不仅仅当作手段。” 康德伦理学也强调自律，即出于理性和义务而非偏好行事。对于 AS 考试，你需要解释这些原则，将其应用于如说谎或偷窃等问题，并评价其优势（尊重人、普遍标准）和劣势（义务冲突、僵化、对不完全义务缺乏指导）。
7. The Teleological Argument | 设计论论证
The teleological (design) argument claims that the order, purpose, and complexity in the universe suggest a designer – God. William Paley’s analogy of the watchmaker: if you find a watch, its intricacy implies a watchmaker; similarly, nature’s design implies a divine designer. The argument uses examples from biology and astronomy. David Hume’s criticisms, formulated before Darwin, question the analogy (world is more like a vegetable than a machine), argue the argument is not a true inference (effect to cause), and highlight the problem of evil – an imperfect world suggests an imperfect designer. Darwin’s theory of evolution by natural selection offered a naturalistic explanation for apparent design. Contemporary versions, like fine-tuning arguments, are also discussed. For WJEC, compare Paley with Hume and assess the strength of the evidence.
设计论（目的论）论证主张宇宙中的秩序、目的和复杂性暗示着一位设计者——上帝。威廉·佩利的钟表匠类比：如果你发现一只手表，其精妙性意味着存在钟表匠；同理，自然的设计意味着神圣设计者。论证利用生物学和天文学的例子。大卫·休谟在达尔文之前提出的批评质疑了这一类比（世界更像一株植物，而非机器），主张这不是真正的推论（由果推因），并强调恶的问题——不完美的世界暗示不完美的设计者。达尔文的自然选择进化论为表面的设计提供了自然主义解释。当代版本如精密调谐论证也常被讨论。WJEC 要求比较佩利与休谟，评价证据的力度。
8. The Problem of Evil | 恶的问题
The problem of evil challenges the existence of an omnipotent, omnibenevolent God given the existence of evil and suffering. The logical problem argues that the following statements are inconsistent: God is omnipotent, God is wholly good, and evil exists. The evidential problem focuses on the amount and distribution of suffering that seems unnecessary for any greater good. Theodicies attempt to justify God’s ways. The free will defence (Plantinga) holds that God cannot give free will and simultaneously prevent moral evil, because free will is a greater good. The soul-making theodicy (Irenaeus, developed by Hick) sees suffering as necessary for moral growth. Process theology and belief in a limited God are alternative responses. For AS, you should explain the logical and evidential problems, evaluate at least two major responses, and identify their strengths and weaknesses.
恶的问题挑战了全能与全善的上帝存在，因为世界上存在恶与苦难。逻辑问题主张以下命题不一致：上帝全能、上帝全善、恶存在。证据问题则着眼于苦难的数量和分布，似乎对任何更大善来说都是不必要的。神义论尝试为上帝之道辩护。自由意志辩护（普兰丁格）认为，上帝无法既赋予自由意志又同时阻止道德恶，因为自由意志是更大的善。灵魂塑造神义论（伊里奈乌，希克发展）视苦难为道德成长所必需。过程神学和信仰有限上帝是替代回应。对于 AS 考试，你需要解释逻辑与证据问题，评价至少两种主要回应，并确定其优劣。
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