The Republic

Citation

Plato. (c. 380 BCE). The Republic (B. Jowett, Trans.). Free official edition: https://www.gutenberg.org/ebooks/1497

Chapter Summary

Context and Argument

The Republic is a dialogue in ten books, narrated by Socrates the day after a festival in the Piraeus. It asks what justice is and whether the just life is better than the unjust one. To answer, Socrates builds a city in speech and then looks for the same structure inside the soul: justice in the city is each class doing its own work, and justice in a person is each part of the soul doing its own work under the rule of reason. The middle books turn from politics to knowledge, arguing that only philosophers who have seen the Form of the Good are fit to rule. The last books return to the original question, ending with a myth about rewards after death.

Book I: Cephalus, Polemarchus and Thrasymachus

Socrates is detained at Cephalus's house and asks what justice is. Cephalus offers telling the truth and repaying debts, and the example of returning a weapon to a madman shows its limits. Polemarchus tries "helping friends and harming enemies", and Socrates argues that justice cannot be a way of harming anyone. Thrasymachus then claims that justice is the interest of the stronger and that injustice pays. Socrates replies using the analogy of the crafts, whose practitioners serve the object of their craft, and the book ends without a definition.

Book II: The Challenge and the City in Speech

Glaucon asks whether justice is good in itself or only for its rewards, and retells the story of the ring of Gyges to suggest that people are just only from fear of being caught. Adeimantus adds that parents and poets praise justice only for its consequences. Socrates proposes to look for justice in a city first, since it is larger, and sketches a city built on need and the division of labour, then a more luxurious one that requires guardians. The guardians' education begins with rules on what stories about the gods may be told.

Book III: Education of the Guardians

The censorship of poetry continues. Stories that make death or the underworld frightening, show gods or heroes behaving badly, or encourage excess are to be removed, and the discussion turns to style, music and gymnastics. The guardians are selected, must live without private property, and are to be told a founding story (the "noble lie", or Phoenician tale) of the earthborn citizens with gold, silver and bronze in their souls.

Book IV: Justice in the City and in the Soul

Adeimantus objects that the guardians will not be happy. The city, Socrates answers, is built for the whole. With wisdom, courage and moderation found in the city, justice is what remains: each class doing its own work. He then argues, from cases in which a person is pulled in two directions, that the soul has three parts (reasoning, spirited and appetitive), and that a just person is one whose parts do their own work.

Book V: Women, Family and Philosophic Rulers

Pressed by his companions, Socrates faces "three waves". Women of the guardian class receive the same education and tasks as men, since their natures differ only in strength. Guardians hold wives and children in common under regulated mating. Finally, cities will have no rest from evil until philosophers rule or rulers philosophise, which leads to the question of who philosophers are: those who love the vision of truth and are set apart from mere opinion.

Book VI: Philosopher Rulers and the Form of the Good

The book describes the philosophic nature and answers the charge that philosophers are useless, with the parable of the ship and its quarrelling crew. The Good is introduced through the analogy of the sun, and the divided line sets out four states of mind from imagining to understanding, with the lower two concerned with visible things and the upper two with the intelligible.

Book VII: The Cave and the Education of Rulers

The allegory of the cave shows prisoners mistaking shadows for reality and the painful ascent to the light. Socrates draws two conclusions: education turns the soul around rather than putting knowledge into it, and those who have seen the Good must go back down to rule. A curriculum follows, running through arithmetic, geometry, solid geometry, astronomy and harmonics, to dialectic, with a late age for the final stage.

Book VIII: Four Defective Regimes

Socrates ranks four decaying constitutions: timocracy, oligarchy, democracy and tyranny. Each arises from the one before and is matched with a type of person. Democracy's freedom turns into licence, and the tyrant emerges as champion of the people.

Book IX: The Tyrant and the Happy Life

The tyrannical person is ruled by lawless desire. Socrates offers three arguments that the just life is the happiest: the tyrant is the most enslaved of men, each kind of person judges pleasures by what he loves but only the philosopher has experience of all, and the pleasures of reason are the truest. The soul is pictured as a many-headed beast, a lion and a human being.

Book X: Poetry, the Soul and the Myth of Er

The ban on imitative poetry is renewed on the ground that the artist produces appearances at a third remove from the Forms, and that poetry feeds the passions. The argument for the soul's immortality follows, and Socrates restores to justice the rewards he set aside. The myth of Er describes judgement, the choice of new lives and rebirth.

Key Concepts

Books I–II

• Justice as the interest of the stronger: Thrasymachus's claim that rulers make laws to suit themselves and that injustice is the better policy.
• Ring of Gyges: Glaucon's thought experiment about a person who could act unjustly without being detected.

Books III–V

• Noble lie: a founding story that gives the classes a shared origin and a reason to accept their roles.
• Tripartite soul: reason, spirit and appetite, distinguished because they can pull against one another.
• Three waves: the equal education of women, community of family among the guardians, and rule by philosophers.

Books VI–VII

• Form of the Good: the object of highest knowledge, compared to the sun.
• Divided line and cave: two images of the ascent from appearance to understanding.
• Dialectic: the final stage of the rulers' education, reached after mathematical studies.

Books VIII–X

• Regime decline: the sequence from the best city to timocracy, oligarchy, democracy and tyranny.
• Imitation: art as a copy of copies, the basis of the case against poetry.
• Myth of Er: a closing story of judgement and the choice of lives.

Critical Analysis

Strengths

• A question that organises everything. The challenge of Glaucon and Adeimantus in Book II sets a clear problem, and each later book can be read as part of the answer: city, soul, knowledge, decline of regimes, then reward.
• Arguments in the form of images. The ship, sun, line and cave give a concrete handle on abstract claims about knowledge and the Good.
• Unusual breadth. In one work a student meets political theory, moral psychology, education, epistemology, aesthetics and eschatology, including an account of how democracy decays into tyranny.

Limitations

• Hard to take as a political programme. Censorship, the noble lie, rigid classes and the abolition of private family life for rulers all invite the question whether Plato proposes them seriously or uses the city as a model of the soul. Book IX itself says the city may exist only as a pattern laid up in heaven.
• Argumentative gaps. The inference from justice as a harmony of the soul to justice as ordinary honesty and respect for others is not secure, and the Book I refutations are not fully conclusive.
• The free translation is Victorian. Jowett's English is readable but often paraphrases, so it suits a first read better than close quotation. Page references in class usually use Stephanus numbers, which many modern editions print in the margin.

Where It Fits in the Course

In this course on classics of political thought, The Republic is the foundation text. Book II of Aristotle's Politics criticises Plato's proposals for unity and common property, so the two are best read in that order. The social-contract writers (Hobbes's Leviathan, Locke's Second Treatise of Government and Rousseau's The Social Contract) ground politics in consent and interest, a different starting point from justice as order in the soul. Machiavelli's The Prince is a contrast in method, concerned with how rulers in fact keep power. Tocqueville's Democracy in America and Mill's On Liberty give modern accounts of democracy to set beside Book VIII, and the Strauss and Cropsey collection and Wolin's Politics and Vision both have chapters on Plato.

How to Use This Book

The Republic can be read without philosophical background, but it is long, so plan for it as a multi-week project. A sensible first pass covers Book I for its argument over justice, Book II (to the end of the city sketched in speech), Book IV for the definition of justice, the end of Book V and Books VI–VII for the philosopher and the cave. A second pass takes Books VIII–IX, which are easier to read and are often assigned for the theory of regimes. Book X can follow as a coda, with the first part on poetry read in light of Book III.

Keep a running table linking each class of the city to the part of the soul it matches. A modern translation with notes and Stephanus numbers is a useful companion to the free Jowett text, for example the Penguin Classics edition listed on this page, and seminar questions usually turn on small differences of wording.

Edition and Sources

This guide covers Benjamin Jowett's English translation as published in Project Gutenberg eBook #1497 (https://www.gutenberg.org/ebooks/1497), which includes Jowett's introduction and analysis. All ten books and Jowett's analysis were read. The guide revises and corrects the site's earlier notes on the work.