1.5.2

Criticisms of the Ontological Argument

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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'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'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

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.”
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1

Philosophy of Religion

1.1

Ancient Philosophical Influences: Plato

1.1.1Plato's Understanding of Reality1.1.2Plato's Theory of Forms1.1.3Plato's Analogy of the Cave1.1.4The Purpose of Plato's Analogy of the Cave1.1.5Evaluation of Plato's Theories
1.2

Ancient Philosophical Influences: Aristotle

1.2.1Aristotle's Understanding of Reality1.2.2Aristotle's Four Causes1.2.3Aristotle's Prime Mover
1.3

Ancient Philosophical Influences: Soul, Mind, Body

1.3.1Plato & Aristotle's Views of the Soul1.3.2Metaphysics of Consciousness1.3.3Materialism - Ryle’s Philosophical Behaviourism1.3.4Materialism - Identity Theory
1.4

The Existence of God - Arguments from Observation

1.4.1The Teleological Argument - Aquinas' Fifth Way1.4.2The Teleological Argument - Paley & Evolution1.4.3The Cosmological Argument1.4.4Hume's Criticisms: Teleological & Cosmological
1.5

The Existence of God - Arguments from Reason

1.5.1The Ontological Argument1.5.2Criticisms of the Ontological Argument
1.6

Religious Experience

1.6.1Introduction to Religious Experience1.6.2Mystical Experience1.6.3Conversion Experience1.6.4Understanding Religious Experience1.6.5Issues Relating to Religious Experience - Validity1.6.6Issues Relating to Religious Experiences - People
1.7

The Problem of Evil

1.7.1Presentations of the Problems of Evil1.7.2Discussion Points -
1.8

The Nature & Attributes of God

1.8.1Omnipotence1.8.2Omniscience1.8.3Boethius - Divine Knowledge, Free Will & Eternity1.8.4(Omni)benevolence1.8.5Eternity & Free Will
1.9

Religious Language: Negative, Analogical, Symbolic

1.9.1Apophatic & Cataphatic Way1.9.2Symbol1.9.3Discussion Points: Religious Language
1.10

Religious Language: 20th Century Perspective

1.10.1Logical Positivism & Verification Principle1.10.2Wittgenstein1.10.3Falsification Symposium: Flew & Hare1.10.4Falsification Symposium: Mitchell1.10.5Discussion Points: Verification & Falsification1.10.6Discussion Points: Aquinas vs Wittgenstein
2

Religion & Ethics

2.1

Natural Law

2.1.1St Thomas Aquinas - Telos & Four Tiers of Law2.1.2St Thomas Aquinas - Precepts2.1.3St Thomas Aquinas - Real & Apparent Goods2.1.4Discussion Points - Natural Law & Doing Good2.1.5Discussion Points - Telos & Double Effect Doctrine
2.2

Situation Ethics

2.2.1Fletcher's Situation Ethics2.2.2Fletcher's Concept of Conscience2.2.3Discussion Points: Moral Decision-Making2.2.4Discussion Points - Agape
2.3

Kantian Ethics

2.3.1Introduction to Kantian Ethics & Duty2.3.2Hypothetical & Categorical Imperative2.3.3Summum Bonum & Three Postulates2.3.4Discussion Points: Kantian Ethics
2.4

Utilitarianism

2.4.1The Utility Principle2.4.2Act & Rule Utilitarianism2.4.3Discussion Points: Utilitarianism
2.5

Euthanasia

2.5.1Key Concepts for Euthanasia Debates2.5.2Discussion Points: Natural Law & Situation Ethics2.5.3Discussion Points: Sanctity of Life2.5.4Discussion Points: Autonomy & Medical Intervention
2.6

Business Ethics

2.6.1Corporate Social Responsibility & Whistle-Blowing2.6.2Good Ethics & Globalisation2.6.3Discussion Points: Utilitarianism & Kantian Ethics2.6.4Discussion Points: CSR, Globalisation & Capitalism
2.7

Meta-Ethical Theories

2.7.1Naturalism2.7.2Intuitionism2.7.3Emotivism2.7.4Meta-Ethics
2.8

Conscience

2.8.1Aquinas' Theological Approach2.8.2Freud's Psychological Approach2.8.3Comparing Aquinas & Freud
2.9

Sexual Ethics

2.9.1Sexual Ethics2.9.2Development of Religious Beliefs on Sexual Ethics2.9.3Application of Sexual Ethics2.9.4Examining Sexual Ethics
3

Developments in Christian Thought

3.1

Saint Augustine's Teachings

3.1.1Human Nature3.1.2Original Sin & God's Grace
3.2

Death & the Afterlife

3.2.1Heaven, Hell, & Purgatory3.2.2Different Interpretations of the Afterlife3.2.3Election3.2.4The Final Judgement3.2.5Discussion Points: Heaven, Hell & Purgatory
3.3

Knowledge of God's Existence

3.3.1Natural Knowledge3.3.2Revealed Knowledge in Faith, Grace, & Jesus Christ3.3.3Revealed Knowledge in the Bible & Church3.3.4Discussion Points: Reason & Belief in God3.3.5Discussion Points: The Fall & Trust in God
3.4

The Person of Jesus Christ

3.4.1Jesus Christ’s Authority as the Son of God3.4.2Jesus Christ’s Authority as a Teacher of Wisdom3.4.3Jesus Christ’s Authority as a Liberator
3.5

Christian Moral Principles

3.5.1The Bible & Love3.5.2Bible, Church & Reason3.5.3Discussion Points: Christian Ethics3.5.4Discussion Points: Love & the Bible
3.6

Christian Moral Action

3.6.1Dietrich Bonhoeffer & the Confessing Church3.6.2Bonhoeffer & Civil Disobedience3.6.3Bonhoeffer's Teaching on Ethics as Action3.6.4Discussion Points: Civil Disobedience & Bonhoeffer
3.7

Development - Pluralism & Theology

3.7.1Pluralism & Theology: Exclusivism & Inclusivism3.7.2Pluralism & Theology: Pluralism3.7.3Discussion Points: Salvation3.7.4Discussion Points: Pluralism Undermining Beliefs
3.8

Development - Pluralism & Society

3.8.1Development of Multi-Faith Societies3.8.2Responses to Inter-Faith Dialogue3.8.3The Scriptural Reasoning Movement3.8.4Discussion Points: Social Cohesion & Scripture3.8.5Discussion Points: Conversion
3.9

Gender & Society

3.9.1Waves of Feminism3.9.2Traditional Christian Views on Gender Roles3.9.3Christian Views on Gender Roles & Family3.9.4Discussion Points: Secular Views of Gender3.9.5Discussion Points: Motherhood & Family
3.10

Gender & Theology

3.10.1Rosemary Radford Ruether3.10.2Mary Daly3.10.3Discussion Points: Ruether & Daly3.10.4Discussion Points: Male Saviour & Female God
3.11

Challenges

3.11.1Secularism - Sigmund Freud3.11.2Secularism - Richard Dawkins3.11.3Christianity & Public Life3.11.4Discussion Points: Spiritual Values3.11.5Discussion Points: Social Values & Opportunities3.11.6Karl Marx3.11.7Liberation Theology

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The Ontological Argument

Introduction to Religious Experience