Criticisms of the Ontological Argument

Gaunilo was a monk and a contemporary of Anselm, who argued you could not define things into existence. Immanuel Kant was a German philosopher in the Age of Enlightenment.

Gaunilo's counter-argument

Gaunilo constructed a reductio ad absurdum argument (disproving an argument by showing it's absurd) to show the flaw in Anselm’s argument.
- Imagine a lost island – the most excellent of all islands.
- You can form the idea of this island in your mind.
- So according to Anselm’s logic, the island must exist in reality.
- But this is absurd, and so is Anselm’s argument.
Anselm replied that islands are contingent things and so do not have necessary existence, whereas God does.

Kant's counter-argument

Kant argued that “It would be self-contradictory to posit a triangle and yet reject its three angles, but there is no contradiction in rejecting the triangle together with its three angles."
In other words, if God exists he must be necessary, but only if. Definitions can only tell us what God would be like if he existed.
Kant says that existence is not a real predicate. It does not give us any information about an object. ‘To exist’ merely means that an object is actual.

Quotation from Kant

Existence adds nothing to a concept: “If we take the subject (God) with all its predicates (eg. all knowledge), and say ‘God is’ or ‘There is a God’, we attach no new predicate to the concept of God…merely posit it as being an object that stands in relation to my concept. The content of both must be one and the same… The real contains no more than the merely possible. A hundred real thalers (German coins) do not contain the least coin more than a hundred possible thalers.”

1Philosophy of Religion

1.1Ancient Philosophical Influences: Plato

1.1.1Plato's Understanding of Reality

1.1.2Plato's Theory of Forms

1.1.3Plato's Analogy of the Cave

1.1.4The Purpose of Plato's Analogy of the Cave

1.1.5Evaluation of Plato's Theories

1.2Ancient Philosophical Influences: Aristotle

1.2.1Aristotle's Understanding of Reality

1.2.2Aristotle's Four Causes

1.2.3Aristotle's Prime Mover

1.3Ancient Philosophical Influences: Soul, Mind, Body

1.3.1Plato & Aristotle's Views of the Soul

1.3.2Metaphysics of Consciousness

1.3.3Materialism - Ryle’s Philosophical Behaviourism

1.3.4Materialism - Identity Theory

1.4The Existence of God - Arguments from Observation

1.4.1The Teleological Argument - Aquinas' Fifth Way

1.4.2The Teleological Argument - Paley & Evolution

1.4.3The Cosmological Argument

1.4.4Hume's Criticisms: Teleological & Cosmological

1.5The Existence of God - Arguments from Reason

1.5.1The Ontological Argument

1.5.2Criticisms of the Ontological Argument

1.6Religious Experience

1.6.1Introduction to Religious Experience

1.6.2Mystical Experience

1.6.3Conversion Experience

1.6.4Understanding Religious Experience

1.6.5Issues Relating to Religious Experience - Validity

1.6.6Issues Relating to Religious Experiences - People

1.7The Problem of Evil

1.7.1Presentations of the Problems of Evil

1.7.2Discussion Points -

1.8The Nature & Attributes of God

1.8.1Omnipotence

1.8.2Omniscience

1.8.3Boethius - Divine Knowledge, Free Will & Eternity

1.8.4(Omni)benevolence

1.8.5Eternity & Free Will

1.9Religious Language: Negative, Analogical, Symbolic

1.9.1Apophatic & Cataphatic Way

1.9.2Symbol

1.9.3Discussion Points: Religious Language

1.10Religious Language: 20th Century Perspective

1.10.1Logical Positivism & Verification Principle

1.10.2Wittgenstein

1.10.3Falsification Symposium: Flew & Hare

1.10.4Falsification Symposium: Mitchell

1.10.5Discussion Points: Verification & Falsification

1.10.6Discussion Points: Aquinas vs Wittgenstein

2Religion & Ethics

2.1Natural Law

2.1.1St Thomas Aquinas - Telos & Four Tiers of Law

2.1.2St Thomas Aquinas - Precepts

2.1.3St Thomas Aquinas - Real & Apparent Goods

2.1.4Discussion Points - Natural Law & Doing Good

2.1.5Discussion Points - Telos & Double Effect Doctrine

2.2Situation Ethics

2.2.1Fletcher's Situation Ethics

2.2.2Fletcher's Concept of Conscience

2.2.3Discussion Points: Moral Decision-Making

2.2.4Discussion Points - Agape

2.3Kantian Ethics

2.3.1Introduction to Kantian Ethics & Duty

2.3.2Hypothetical & Categorical Imperative

2.3.3Summum Bonum & Three Postulates

2.3.4Discussion Points: Kantian Ethics

2.4Utilitarianism

2.4.1The Utility Principle

2.4.2Act & Rule Utilitarianism

2.4.3Discussion Points: Utilitarianism

2.5Euthanasia

2.5.1Key Concepts for Euthanasia Debates

2.5.2Discussion Points: Natural Law & Situation Ethics

2.5.3Discussion Points: Sanctity of Life

2.5.4Discussion Points: Autonomy & Medical Intervention

2.6Business Ethics

2.6.1Corporate Social Responsibility & Whistle-Blowing

2.6.2Good Ethics & Globalisation

2.6.3Discussion Points: Utilitarianism & Kantian Ethics

2.6.4Discussion Points: CSR, Globalisation & Capitalism

3Developments in Christian Thought

3.1Saint Augustine's Teachings

3.1.1Human Nature

3.1.2Original Sin & God's Grace

3.2Death & the Afterlife

3.2.1Heaven, Hell, & Purgatory

3.2.2Different Interpretations of the Afterlife

3.2.3Election

3.2.4The Final Judgement

3.2.5Discussion Points: Heaven, Hell & Purgatory

3.3Knowledge of God's Existence

3.3.1Natural Knowledge

3.3.2Revealed Knowledge in Faith, Grace, & Jesus Christ

3.3.3Revealed Knowledge in the Bible & Church

3.3.4Discussion Points: Reason & Belief in God

3.3.5Discussion Points: The Fall & Trust in God

3.4The Person of Jesus Christ

3.4.1Jesus Christ’s Authority as the Son of God

3.4.2Jesus Christ’s Authority as a Teacher of Wisdom

3.4.3Jesus Christ’s Authority as a Liberator

3.5Christian Moral Principles

3.5.1The Bible & Love

3.5.2Bible, Church & Reason

3.5.3Discussion Points: Christian Ethics

3.5.4Discussion Points: Love & the Bible

3.6Christian Moral Action

3.6.1Dietrich Bonhoeffer & the Confessing Church

3.6.2Bonhoeffer & Civil Disobedience

3.6.3Bonhoeffer's Teaching on Ethics as Action

3.6.4Discussion Points: Civil Disobedience & Bonhoeffer

3.7Development - Pluralism & Theology

3.7.1Pluralism & Theology: Exclusivism & Inclusivism

3.7.2Pluralism & Theology: Pluralism

3.7.3Discussion Points: Salvation

3.7.4Discussion Points: Pluralism Undermining Beliefs

3.8Development - Pluralism & Society

3.8.1Development of Multi-Faith Societies

3.8.2Responses to Inter-Faith Dialogue

3.8.3The Scriptural Reasoning Movement

3.8.4Discussion Points: Social Cohesion & Scripture

3.8.5Discussion Points: Conversion

3.9Gender & Society

3.9.1Waves of Feminism

3.9.2Traditional Christian Views on Gender Roles

3.9.3Christian Views on Gender Roles & Family

3.9.4Discussion Points: Secular Views of Gender

3.9.5Discussion Points: Motherhood & Family

3.10Gender & Theology

3.10.1Rosemary Radford Ruether

3.10.2Mary Daly

3.10.3Discussion Points: Ruether & Daly

3.10.4Discussion Points: Male Saviour & Female God

3.11Challenges

3.11.1Secularism - Sigmund Freud

3.11.2Secularism - Richard Dawkins

3.11.3Christianity & Public Life

3.11.4Discussion Points: Spiritual Values

3.11.5Discussion Points: Social Values & Opportunities

3.11.6Karl Marx

3.11.7Liberation Theology

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