Ethics — Complete Study Notes

This unit introduces ethics (moral philosophy) — what it is, how it developed as a discipline, the methods and approaches used to study it, how it relates to other sciences and to religion, and why studying it — and being moral — actually matters.

1.1 Meaning & Definition

The word "ethics" comes from the Greek ethos — meaning character, habit, customs, ways of behaviour. "Moral" comes from the Latin mores — customs, character, behaviour. So both roots point to the same idea: how we habitually behave, and whether that behaviour is good.

As a philosophical discipline, ethics studies the values and guidelines by which we live, and also justifies them — it isn't just about blindly following tradition or custom, but about analysing and evaluating these guidelines in the light of universal principles.

Is Ethics a "Science"?

Yes, in a special sense. Ethics is:

• A rational science — its principles are deduced by reason from things that concern the free will.
• A normative / regulative science — it regulates and directs human life, giving the right orientation to one's existence (unlike descriptive sciences, which merely record facts).
• Both theoretical and practical — theoretical because it provides the fundamental principles behind moral judgements; practical because it is concerned with actually attaining a good end.

Ethics vs Morality

In practice, however, the two words are very often used interchangeably.

1.2 Scope of Ethics

Ethics deals only with voluntary actions. Philosophers draw a key distinction here:

It is intention that makes the difference. Ethics deals only with human actions — those done knowingly and willingly.

1.3 History of Ethics — A Quick Timeline

Because ethics is the study of human behaviour itself, its "history" cannot be traced perfectly — but as a systematic discipline, we can trace clear stages of development in Western philosophy:

1.4–1.5 Methods & Approaches to Studying Ethics

Two Methods of Reasoning

Four Approaches to the Study of Ethics (Beauchamp's Model)

Tom L. Beauchamp divides approaches into two broad camps:

Non-normative approaches take no moral position; normative approaches make clear judgements about right and wrong. The boundaries between meta-ethics, normative ethics, and applied ethics are often blurry — e.g. the abortion debate touches all three.

1.6 Division of Ethics

1.7–1.8 Ethics, Other Sciences & Religion

Most sciences describe uniformities of experience (how objects/events actually occur) with no reference to an end. Ethics is different: it always refers to an end that humans desire to attain — this is why it is called the "fruit of all the sciences," ordering all other knowledge toward the ultimate end of human life.

1.9–1.10 Importance of Studying Ethics & Why Be Moral

Given rising crime, terrorism, pollution, deceptive advertising, and corruption, one might ask: are we heading toward a moral vacuum? Three good reasons to study ethics answer this:

Because humans are inherently social beings living in relationship with others and with nature, our actions always affect someone else — so ethical problems confront everybody, whether we're aware of it or not.

Why Be Moral?

Every human has a deep, natural desire for good — the summum bonum (highest good). Morality is not just obedience to external customs; it is a deep-down desire rooted in human nature itself, guided by reason toward common, objective principles.

Just as society needs rules to function, individuals need morality to attain a truly satisfying life — one that respects both common good and individual freedom.

1.12 Key Terms to Remember

The aim of Greek ethics was to discover the final end of human activity — what is the good life, and how do we reach it? This unit traces the answers given from the Pre-Socratics through the Sophists, Socrates, Plato, Aristotle, and finally the Epicureans and Stoics.

2.2–2.4 The Earliest Thinkers: Pythagoras, Heraclitus, Democritus

Pythagorean Ethics — Purification of the Soul

Pythagoras founded a religious-ethical (not merely political) association. His central idea was metempsychosis — the soul survives the body's death and may be reborn into another body. This made ethics urgent: good and evil actions are rewarded/punished across reincarnations, so one must undergo purification and soul-training.

Heraclitian Ethics — Living According to the Logos

Heraclitus taught: "To be ethical is to live a rational life, to obey the dictates of reason, which is the same for us all." His key concept, logos, is the universal rational law binding everything into unity. Man's own reason is a "moment" in this universal Reason — so morality means self-discipline and control of the passions. "Character is a man's guardian divinity."

Democritean Ethics — Eudaimonia

Democritus is considered the first Greek philosopher to build a systematic ethical theory, centred on eudaimonia (well-being) — combining "good existence" and "good feeling." "Medical science heals diseases of the body, but wisdom rids the soul of passions." Freedom from passion brings happiness; a little pain and moderation of pleasure is needed — "the less you desire, the less you are disappointed." Duty should come from a sense of right, not fear of punishment.

2.5–2.6 The Sophists: Protagoras & Thrasymachus

2.7 Socratic Ethics — "Knowledge is Virtue"

Socrates believed that all moral virtues are rooted in knowledge — right insight leads directly to right action. This was revolutionary: earlier aristocratic thought held morals were the privilege of the elite; Socrates taught that doing good is possible for every human being.

2.8 Platonic Ethics

Plato held that "we are souls." The body, not the soul, is the source of evil — happiness comes from liberating the soul from the body's bondage. This is why Plato's ethics is called eudaimonistic (about attaining true well-being) and intellectualistic (reason must regulate the irrational appetites). For Plato, wisdom is the greatest virtue.

The Three-Part Soul & Its Virtues

The just man does what is right externally as a citizen because his soul is internally well-ordered. To live well, one must ultimately rise to a vision of the idea of the Good.

Plato's Political Thought — The Ideal State (Republic)

For Plato, ethics and politics are inseparable — a good life needs association with others in a state (polis). His "ideal state" mirrors the tripartite soul:

Notably, Plato held that women could rule a country too, since they have the same powers of reasoning as men, given the same training — a progressive view for his time. Rulers and soldiers in his ideal state were to have no private property or family life (a form of communal living).

2.9 Aristotelian Ethics

Aristotle asks: every action aims at some end, and every end aims at a higher end — so there must be a highest good for the sake of which all else is ordered. For man, this is not sensory life (like animals) or vegetative life (like plants), but the life of reason — realised as eudaimonia (happiness).

The Function Argument

Just as "a flutist becomes a good flutist by playing the flute well, not by playing cricket," a human becomes good by exercising reason well. Happiness is the natural by-product of this activity, not a separate goal in itself.

The Principle of the Mean

Pleasure, Contemplation & the Teleological Argument

Pleasure is a natural consequence of virtuous activity, not its goal — so pleasure alone cannot be the highest good. Since reason is the highest part of the soul, the contemplative life (theoretical wisdom) is even higher than the virtuous political life — because it most resembles the activity of God, who is pure contemplation. Still, Aristotle allows that not everyone can lead a life of pure contemplation — a virtuous, practical political life is a genuinely happy "second-best" life too.

Aristotle is credited with inventing teleology — the idea that "nature is among the causes which act for the sake of something." Every being strives to actualise its potential; among all these good ends, there must be a single supreme good, which Aristotle identifies with God.

2.10 Epicurean Ethics

Epicurus sought to free people from the fear of death instilled by religion, believing happiness depends on ourselves in this life. Pleasure is defined not as indulgence, but as "the absence of pain in the body and of trouble in the soul."

Epicurus classified human desires into three groups: natural and necessary, natural but not necessary, and neither natural nor necessary. Since Epicurus taught that each person should seek their own pleasure and tranquility, his theory is often called egoistic.

2.11 Stoic Ethics

The Stoics believed the cosmos is a harmonious unity governed by a living, intelligent God (logos), and man carries a spark of this divine fire (pneuma). Moral life means discovering this logos within and arranging one's life accordingly.

Mere duty isn't enough — right intention (coming from virtue) perfects the moral act. Since the same rational principle (the will of God) exists in everyone, Stoic ethics envisions a universal society of rational beings sharing the same rights and duties.

Medieval philosophy is the philosophy of Western Europe between the decline of classical pagan culture and the Renaissance. Its ethics is dominated by two towering figures — St. Augustine and St. Thomas Aquinas — who fused Greek philosophical method with Christian theology.

3.2–3.3 Characteristics & Ethical Merit of Medieval Philosophy

The first great period of Catholic philosophy was dominated by St. Augustine; the second culminates in St. Thomas Aquinas, for whom Aristotle "far outweighs" Plato. Philosophy was invoked to defend the faith rationally, appealing to reason so that arguments could persuade people of any creed — not merely theologians.

3.4 Importance of Natural Reason in Ethics

Both Plato and Aristotle had argued that humans possess a faculty of rational judgement for choosing the right way of acting — excellence in this is the virtue of practical wisdom (prudentia), and conduct following it is moral virtue. Medieval Christian thinkers like Clement of Alexandria saw this Greek discovery of ratio practica (practical reasoning) as coincident with Christian moral teaching — even without revelation, human reason can arrive at genuine moral conclusions.

3.5a St. Augustine: Sin, Vice & Virtue

Augustine accepted akrasia — the ancient problem of why we do what we know we ought not to do. In his Confessiones, he famously describes stealing pears as a boy of sixteen — not for the pears themselves (he had better ones at home) but purely for "the flavour of sinning."

On virtue and vice, Augustine distinguishes things desirable in themselves (to be enjoyed) from things desirable for the sake of something else (to be used). Vice is wanting to use what should be enjoyed, or vice versa. He follows St Paul in holding that love is the root of all virtue — temperance is love "keeping itself whole… for God"; courage is love "bearing everything readily for the sake of God." "Virtue is nothing but the perfect love of God."

3.5b Augustine on "Ought" and "Can"

Augustine confronted Pelagianism — the heresy (from the monk Pelagius) that emphasised human effort alone in salvation, and held that "ought" simply implies "can": if something is unavoidable, it cannot be a sin.

Augustine's reply: "ought" does imply "can" — but only "can, with the gratuitous assistance of God's grace" — not "can, on one's own strength alone." This became the orthodox Christian position against Pelagius.

3.5c Augustine on Killing & the Just War

Augustine interprets "Thou shalt not kill" carefully: "One who owes a duty of obedience to the giver of the command does not himself kill; he is an instrument, a sword in its user's hand." So an executioner, or a soldier fighting "on the authority of God," may cause death without technically "killing" in the morally culpable sense.

3.6 Aquinas' View on Ethics

Aquinas develops his moral theory most fully in the Second Part of the Summa Theologiae (sometimes called the "Treatise on Happiness"). Like his predecessors, he sees ethics as having two topics: the ultimate goal of human existence, and how it is won or lost.

The Ultimate End: The Beatific Vision

Aquinas argues that everything a human being seeks, it ultimately seeks for the sake of one final end: happiness. The genuine (often unrecognised) object of this desire is God — perfect goodness itself. Perfect happiness is achieved only in the beatific vision — the direct contemplation of God, the first cause of everything, which is also the perfection of all knowledge.

Goodness & Badness of Human Acts

Because intellect and will are closely linked, moral evil is never mere intellectual error — bad volition can stem from defective deliberation, and vice versa.

The Four Cardinal Virtues

These four cardinal virtues can be acquired by human effort. But the three theological virtues — faith, hope, and charity — cannot be earned; they must be directly "infused" by God.

Aquinas' Treatise on Law & Natural Law

Natural law is the naturally-knowable rational foundation of morality — human laws should be derived from it. As a striking consequence: "A tyrannical law, since it is not in accord with reason, is not unconditionally a law but is, rather, a perversion of law." Even natural law itself rests on the more fundamental eternal law — God's own providence and governance of the universe.

3.7 The Nature of Virtue Ethics

Virtue ethics focuses primarily on what sort of person one should try to be, rather than on rules for individual actions. The ultimate aim is eudaimonia (flourishing/happiness). According to Aristotle, a re-quoted authority here: "Virtue is a permanent state of mind, formed with the concurrence of the will and based on an ideal of what is best in actual life, an ideal fixed by reason."

Virtue ethicists reframe the central moral question into three parts:

Aristotle offers eleven virtues in the Nicomachean Ethics (e.g. bravery, temperance, truthfulness); Aquinas adds the four cardinal virtues plus three theological virtues. Self-knowledge must be honest and grounded in how we actually act in spontaneous, unplanned situations — not in wishful self-image.

Modern ethical theories split into two great camps: Consequentialism (Bentham) and Non-consequentialism / Deontology (Kant). This unit captures the spirit of both thinkers and asks whether we can be truly autonomous moral agents.

4.1 Consequentialism vs Non-consequentialism

4.2 Immanuel Kant (1724–1804)

Kant is considered the most important ethicist of modern times, developing his theory chiefly in the Foundations of the Metaphysics of Morals (1785), Critique of Practical Reason (1788), and Metaphysics of Morals (1797). He proposed a universal ethics — rules acceptable to everyone, everywhere, at every time.

Autonomy of Will — The Foundation of Morality

Kant distinguishes phenomena (things as they appear) from noumena (things in themselves). Morality, he argues, is possible only if the human will is free — "How can we say that one is morally wrong or right, if he/she were not free to act otherwise?" The ability to be motivated by reason alone, free of internal/external influence, is what Kant calls the autonomy of the will.

The Categorical Imperative

To test any action: ask whether you could will that everyone, in the same situation, act the same way. If what you do could be willed by all rational beings as a universal law, it is morally permissible; if not, it is forbidden.

Non-consequentialism of Kant's Ethics

For Kant, moral worth comes only from acting "out of a sense of duty" — not from fear, self-interest, or pleasure. His famous example: a man who refuses a bribe purely from fear of the anti-corruption squad acts rightly, but earns no moral credit, because his motive is not duty itself.

The Good Will

A Good Will is good in itself, unconditionally — not good because of what it achieves. It is corruptible by inclination, but a free will striving purely by reason equals a Good Will — "the highest good."

4.3 Jeremy Bentham (1748–1832)

Bentham, chief expounder of Utilitarianism, presented his theory mainly in An Introduction to the Principles of Morals and Legislation (1789). He believed the world is torn between two great forces: the quest for pleasure and the avoidance of pain — and that society should aim for the "greatest happiness of the greatest number."

Pleasure: The End of Human Life

Using an analysis of language, Bentham argued that words are meaningful only if they refer to something experienced. "Good" ultimately just means "pleasure and absence of pain" — and this is the core of morality. "Obligation" refers to acts we're directed to do under threat of pain if we fail.

The Principle of Utility

This principle governs not only private individuals but governments too. No action is good or evil in itself — even things like fame, freedom, and education are only instrumentally good, useful only insofar as they produce happiness (an intrinsic good).

The Hedonistic Calculus (Calculus of Felicity)

Bentham tried to put happiness on a quantitative, scientific footing, proposing seven measurable factors of pleasure:

Through these seven factors, Bentham believed we could calculate which course of action produces the greatest happiness — and therefore which one we ought morally to take.

4.4 Kant vs Bentham — Head to Head

Contemporary Western Ethics — roughly, ethics since 1900 — takes a fresh, sceptical look at the "one norm fits all" tradition of the past. It re-examines normative ethics, meta-ethics, virtue ethics, and practical ethics as four distinct but related tasks of moral philosophy.

5.1 Five Epochs of Western Ethics

After Sidgwick (c. 1900), five new questions began driving ethics: What should moral philosophy actually do? Do we need one "monolithic" norm? Should logic/language take precedence? Should we revive Aristotelian virtues? Should ethics have practical application?

5.3 Normative Ethics: A New (Sceptical) Look

Older ethics was dominated by a single circular debate: teleological norms (act toward a "purpose") vs deontological norms (act from "duty"), each claiming to be the sole necessary/sufficient basis for moral evaluation. Contemporary ethics grew sceptical of this "monolithic" approach.

The key insight: relative worth of norms depends on social, economic, cultural, and political factors, and mindsets change with time — yet this does not mean ethical inquiry itself becomes pointless.

5.4 Meta-ethics (Second-Order Ethics)

If first-order (normative) ethics asks "is this action right or wrong?", meta-ethics steps back and asks: "what do our moral words even mean, and how can moral claims be true?" A key issue is the is/ought problem — logically, you cannot derive a value ("ought") purely from a fact ("is") without smuggling in some evaluative premise.

Major Meta-ethical Positions

5.5 Virtue Ethics: The Aristotelian Revival

In a landmark essay, G.E.M. Anscombe asked whether modern moral philosophy had become too overloaded with theory, at the cost of actually living a virtuous life. This sparked a revival of Aristotelian "virtue ethics" — focusing on "being good" (character) rather than obeying rules.

Critics point out that virtue ethics can't fully escape theory: calling "honesty" a virtue still requires a norm to justify why it counts as one — so contemporary virtue ethics represents, in a sense, a "return to theory."

5.6 Practical Ethics: Forgotten Past Unearthed

If virtues matter, so does actually applying ethics to real problems. Contemporary ethics rejects the old "chauvinistic," top-down model — where an expert ethicist plays "Philosopher King," prescribing moral dictates in isolation (much like ancient sophistry or medieval casuistry).

This gave rise to professional ethics — applying moral experience to specific fields where value-crises regularly arise: environmental ethics, bioethics, medical, business, legal, and media ethics, among others.