Plato's Theory of Forms

Test yourself

Plato's Theory of Forms

Plato called the elements of true knowledge 'Forms'.

Summary of the theory of Forms

All things experienced through the senses are particular things.
We never sense abstract things, only particulars - we can see a beautiful face but not beauty itself.
Many things can be beautiful, so they share something called beauty even though they are different.
Therefore, there is a universal idea of beauty which really exists or it could not be shared by many different things.
This Plato called a Form.

The Form of Beauty

The Form of Beauty is indestructible because even if you destroyed all beautiful things, you would not destroy ‘beauty’.
And it is independent because beautiful things share in it but it is not limited to them.

Particulars: football example

Particulars like footballs are always a mixture of properties like roundness, whiteness etc.
Particulars are also relative. A ball can be large or round, but only relative to larger or rounder things.
This means that our knowledge of a particular thing will always be a mixture or relative to other facts.

Knowing particulars is opinion

Another way of saying this is that knowledge of particulars is actually opinion and not true knowledge at all.
- E.g., I might say “That ball is big!”. But it is only relatively big, not absolutely big - there will be other bigger balls.

Separation: episteme & doxa

For Plato, knowledge and opinion, or episteme and doxa respectively, are two different faculties.
- This is because opinion can be mistaken but knowledge cannot. You cannot know what is false. And as knowledge is about what is real, but ignorance is about what is not real (because if you are ignorant of something, you do not know of it at all), there also must be an intermediate faculty called opinion, which is a mixture of knowledge and ignorance. This is what knowledge of particulars is.

The Nature of Plato's Forms

For Plato, knowledge relates to the world of Forms and opinion to the world of the senses. This means that the Forms must exist separately from the particulars.

Simple

They are simple - not a mixture of anything.

Permanent

They do not change. If they could change, they could be what they are not - which is a contradiction.

Perfect

They are the standard by which the particular things which contain them are judged.

Separate from particulars

They do not exist in time and space - you do not destroy beauty by destroying every beautiful thing.

Logically prior to particulars

They are logically prior to the particulars, which is to say they take precedence over them.
This is because the particulars are what they are by virtue of the Forms, whereas the Forms are what they are by virtue of themselves.

The Good is the supreme Form

The Good is the supreme Form because it is only by this Form that all the other Forms are capable of being known.
- Eg, what do the Forms of Beauty, Justice, Truth etc all share in common? They are all themselves good, so they must participate in the Form of the Good.

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

Jump to other topics