Religious Experience, the Design Argument and the Cosmological Argument
Religious Experience as Evidence for God
Religious experience refers to moments when a person feels they have encountered God directly. Catholics believe such experiences are a genuine route to knowledge of God, though the Church exercises caution — not every claimed experience is accepted as authentic. The Catechism of the Catholic Church at paragraphs 66–67 teaches that although God’s revelation in Christ is complete, private revelations and religious experiences can “help live more fully by it in a certain period of history”. Crucially, the Catechism makes clear that no new public revelation is possible after Jesus: private religious experiences cannot add to or override the deposit of faith.
Atheists and Humanists challenge the evidential value of religious experiences. They argue that a subjective inner experience — however powerful — is not verifiable evidence that God exists. The same brain states that produce a religious experience could, in their view, be produced by meditation, sleep deprivation, or psychological suggestion. Dawkins argues in The God Delusion that religious experience reflects the brain’s tendency to detect agency and pattern, not a real encounter with God. Catholics respond that the moral transformation, lasting peace, and convergence across cultures of religious experiences point to something real beyond neurological processes.
Catechism of the Catholic Church 66–67 teaches that God’s revelation is complete in Christ, but private revelations (including religious experiences) can help believers live more fully by it. The Church insists that no private revelation adds to the deposit of faith — it can only deepen understanding of what has already been revealed.
The Design Argument
The design argument (also called the teleological argument) proposes that the order, complexity and beauty of the natural world are best explained by an intelligent designer. Paul states in Romans 1:18–24 that “since the creation of the world God’s invisible qualities — his eternal power and divine nature — have been clearly seen, being understood from what has been made.” For Catholics, this verse establishes that the natural world itself reveals God to those who look carefully.
The most celebrated version of the design argument comes from William Paley, who published Natural Theology in 1802. Paley argued using the watchmaker analogy: if you found a watch on a heath, you would conclude it had a designer because of its intricate, purposeful construction. Paley argued that living organisms — eyes, hearts, wings — are far more complex than any watch. They must therefore have a designer vastly more intelligent than any human craftsman: God.
Richard Dawkins, in The Blind Watchmaker (1986), argues that natural selection entirely explains apparent design without any designer. Evolution shows that complexity can accumulate gradually through random mutation and differential survival — no intelligence is required. Dawkins calls Paley “gloriously and utterly wrong.” Humanists add that the natural world also contains enormous amounts of what looks like bad design: vestigial organs, disease, predation, extinction. If a designer made the universe, they argue, it is not an all-loving, all-powerful God. Catholics respond that evolution is compatible with Catholic teaching (the Church does not reject it) and that the laws of physics governing evolution still point to a lawgiver. Many Catholic thinkers argue that the orderliness of the cosmos — the fact that evolution follows predictable laws — is itself evidence of a rational mind behind nature.
Aquinas’s First Three Ways: The Cosmological Argument
The cosmological argument argues that the existence of the universe requires a cause outside itself. The most celebrated Catholic version comes from Thomas Aquinas, whose Summa Theologica presents five arguments. The spec focuses on the first three, which are all forms of the cosmological argument.
Aquinas’s First Three Ways are: (1) the argument from motion (everything in motion was put in motion by something else — there must be an unmoved mover, God); (2) the argument from causation (everything has a cause — there must be a first uncaused cause, God); (3) the argument from contingency (things in the universe exist but might not — there must be a necessary being, God, who cannot fail to exist). All three are a posteriori: they begin from observation of the world and reason to God.
The prime mover is the conclusion of the First Way. Aquinas observed that everything in the universe is in motion or in a state of change. For something to change, it must be acted upon by something already in the relevant state. You cannot have an infinite chain going backwards — at some point, there must be something that initiates motion without itself being moved. This first mover is what Catholics call God. The argument from contingency takes a different angle: the universe did not have to exist. Its existence demands explanation; that explanation is a being whose existence is necessary rather than contingent — God.
Students regularly confuse three distinct philosophical arguments. Aquinas’s First Three Ways are a posteriori (starting from observation of the world: motion, causation, contingency) and conclude to God as first mover, first cause, and necessary being. The Ontological Argument, by contrast, was devised by St Anselm of Canterbury in his Proslogion (c.1078) and is a priori (based on the concept of God alone, not observation). Anselm’s argument is NOT in the Edexcel spec for Paper 3 — do not bring it in. The Kalam cosmological argument (“everything that begins to exist has a cause; the universe began to exist; therefore the universe has a cause”) is the Islamic version associated with al-Ghazali — covered in the Islam route, not here. Aquinas and al-Ghazali made different arguments and lived in different centuries. Never attribute the Kalam to Aquinas or the Five Ways to al-Ghazali.