St Thomas Aquinas - Telos & Four Tiers of Law

St Thomas Aquinas and Natural Law

St Thomas Aquinas is a key thinker behind natural law. He believed that human conduct must follow certain principles found in nature.

Universal and fixed principles

These principles are universal and fixed. That is, they apply to everyone, everywhere, all of the time.
As humans, we have the ability to reason and work out what these principles are.
His theory is deontological, meaning it is only concerned with human action; not the result or consequence of that action.

“Do good and avoid evil”

The central principle or synderesis rule of natural law is that “Good is to be done and pursued and evil is to be avoided” (St. Thomas Aquinas, Summa Theologica).
In other words, “do good and avoid evil”.
Using this as the overriding guiding principle, we as humans must use our reason to work out what is the right action.

Other support for natural law

Aquinas’ thinking has had a major influence on Catholic teaching.
Many other thinkers support the theory of natural law, including Hugo Grotius (pictured), William Paley, John Locke and Aristotle.
Aristotle supported the idea that humans use reason to discern the natural law which is universal and unchanging.

The Concept of Telos and the Four Tiers of Law

Aquinas believed that humans act to achieve happiness (eudaimonia). Aquinas believed that there are four types of law that are made known to humans.

Human end goal - eudaimonia

Aquinas, like Aristotle, believed that humans act for an end (to achieve something).
Aristotle believed that this end is happiness or as he called it, eudaimonia.
This is not simply feeling happy; it is not bodily happiness. It is a deeper sort of happiness. It could be defined more closely as human flourishing.
Aquinas believed that this sort of happiness cannot be achieved in this world but only once we are reunited with God.

The Eternal Law

For Aquinas, the Eternal Law is part of God.
It is universal and absolute - that is, unchanging and applies to everyone, everywhere all of the time.

The Divine Law

The laws and rules found in the Bible.
- For example, the Decalogue or Jesus’ Parables.
The Divine Law has been revealed by God.
The Divine Law shows humans how they should live their lives.

The Natural Law

All humans can become aware of God’s eternal law through Natural Law.
Humans have the ability to reason (unlike animals) so they can work out, by observing the world, what actions follow this Natural Law.
Through natural law, humans can be aware of God’s Eternal Law even if they have not read the Bible.

The Human Law

The laws that humans create for their society that are derived from the Natural and Divine law.
Many societies have developed similar laws to preserve life or care for the sick, for example.

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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