Arguments for the existence of God — AQA A-Level Religious Studies

Arguments for the existence of God form a central part of the AQA A-Level Religious Studies Philosophy of Religion component. This topic examines the key philosophical arguments that have been proposed throughout history to demonstrate that God exists, including the ontological, cosmological, and teleological arguments. Students must critically analyse each argument's strengths and weaknesses, considering objections from philosophers such as Hume, Kant, and Russell, as well as responses from defenders like Anselm, Aquinas, and Paley. Understanding these arguments is essential for evaluating the rationality of theistic belief and for engaging with broader debates about faith, reason, and evidence.

This topic matters because it addresses fundamental questions about the nature of reality and whether belief in God can be rationally justified. It connects to other areas of the course, such as the problem of evil and religious experience, as these often serve as counterarguments or alternative grounds for belief. Mastery of this topic requires not only memorising the arguments but also evaluating them critically, using philosophical reasoning to assess their validity and soundness. Students should be prepared to discuss how these arguments have evolved over time and their relevance in contemporary philosophy of religion.

In the AQA A-Level exam, questions on arguments for God's existence typically appear in the Philosophy of Religion paper, often requiring students to compare and contrast different arguments or to evaluate a specific argument in depth. High-scoring responses demonstrate a clear understanding of the logical structure of each argument, awareness of key criticisms, and the ability to construct a balanced evaluation. Students should also be familiar with the distinction between a priori and a posteriori arguments, as this underpins much of the debate.

• →A priori vs a posteriori arguments: Ontological arguments are a priori (based on reason alone), while cosmological and teleological arguments are a posteriori (based on empirical observation).
• →The ontological argument: Anselm's version defines God as 'that than which nothing greater can be conceived', arguing that existence in reality is greater than existence in the mind alone, so God must exist. Criticisms include Gaunilo's 'perfect island' objection and Kant's claim that existence is not a predicate.
• →The cosmological argument: Aquinas' Third Way (contingency) argues that since contingent beings exist, there must be a necessary being (God). The Kalam argument (based on the universe's beginning) also falls under this category. Hume and Russell challenge the principle of sufficient reason and the concept of necessary being.
• →The teleological argument: Paley's watchmaker analogy argues that the complexity and order in nature imply a designer. Hume's criticisms (e.g., the universe may be more like a vegetable than a watch) and Darwin's theory of evolution by natural selection provide strong objections. Modern versions include fine-tuning arguments.
• →Inductive vs deductive reasoning: Ontological arguments are deductive (if premises are true, conclusion must be true), while cosmological and teleological arguments are inductive (conclusion is probable but not certain). This affects how they are evaluated.

• Paley’s analogical argument for design
• Hume’s criticisms of the design argument
• Anselm’s a priori ontological argument
• Gaunilo’s criticisms of the ontological argument
• Kant’s criticisms of the ontological argument
• Aquinas’ Way 3 (Cosmological argument from contingency and necessity)
• Hume’s criticisms of the cosmological argument
• Russell’s criticisms of the cosmological argument
• Analysis of the basis of each argument (observation vs thought)
• Evaluation of the strengths and weaknesses of each argument
• Assessment of the status of these arguments as 'proofs'
• Evaluation of the value of these arguments for religious faith
• Analysis of the relationship between reason and faith

• 💡Ensure you can clearly distinguish between a priori and a posteriori arguments.
• 💡Be prepared to evaluate whether these arguments function as logical proofs or merely as supportive frameworks for existing faith.
• 💡When discussing criticisms, ensure you link them back to the specific scholar's argument (e.g., how Hume specifically challenges Paley).
• 💡Use specialist terminology accurately when discussing the nature of necessity and contingency.
• 💡Always define key terms clearly at the start of your answer, such as 'a priori', 'contingent', and 'necessary being'. This shows the examiner you understand the technical vocabulary.
• 💡When evaluating arguments, use a balanced approach: present the argument, then a criticism, then a possible response from the defender, and finally your own assessment. This demonstrates critical thinking and engagement with scholarly debate.
• 💡Refer to specific philosophers and their objections by name (e.g., Hume, Kant, Russell, Swinburne). Avoid vague statements like 'some philosophers say'. Use precise references to strengthen your argument.

• Misconception: The ontological argument proves God's existence beyond doubt. Correction: While Anselm's argument is logically valid, many philosophers (e.g., Kant) argue it is unsound because existence is not a property that can be added to a concept. The argument is widely rejected today, though it has modern defenders like Plantinga.
• Misconception: The cosmological argument is a single argument. Correction: It includes several versions, such as Aquinas' First Three Ways (motion, causation, contingency) and the Kalam argument (based on the universe's beginning). Each has different strengths and weaknesses.
• Misconception: The teleological argument was disproved by Darwin. Correction: Darwin's theory challenges Paley's argument by offering a natural explanation for apparent design, but it does not disprove the possibility of a designer. Some argue that evolution itself requires a fine-tuned universe, leading to modern fine-tuning arguments.