They grouped the topics into 102 chapters, for which Adler wrote the 102 introductions. Four colors identify each volume by subject area—Imaginative Literature, Mathematics and the Natural Sciences, History and Social Science, and Philosophy and Theology. The volumes contained the following works: Volume 1 The Great Conversation Volume 2 Syntopicon I: Angel, Animal, Aristocracy, Art, Astronomy, Beauty, Being, Cause, Chance, Change, Citizen, Constitution, Courage, Custom and Convention, Definition, Democracy, Desire, Dialectic, Duty, Education, Element, Emotion, Eternity, Evolution, Experience, Family, Fate, Form, God, Good and Evil, Government, Habit, Happiness, History, Honor, Hypothesis, Idea, Immortality, Induction, Infinity, Judgment, Justice, Knowledge, Labor, Language, Law, Liberty, Life and Death, Logic, and Love Volume 3 Syntopicon II: Man, Mathematics, Matter, Mechanics, Medicine, Memory and Imagination, Metaphysics, Mind, Monarchy, Nature, Necessity and Contingency, Oligarchy, One and Many, Opinion, Opposition, Philosophy, Physics, Pleasure and Pain, Poetry, Principle, Progress, Prophecy, Prudence, Punishment, Quality, Quantity, Reasoning, Relation, Religion, Revolution, Rhetoric, Same and Other, Science, Sense, Sign and Symbol, Sin, Slavery, Soul, Space, State, Temperance, Theology, Time, Truth, Tyranny, Universal and Particular, Virtue and Vice, War and Peace, Wealth, Will, Wisdom, and World Volume 4 Homer (rendered into English prose by Samuel Butler) The Iliad The Odyssey Volume 5 Aeschylus (translated into English verse by G.M. Cookson) The Suppliant Maidens The Persians Seven Against Thebes Prometheus Bound The Oresteia Agamemnon Choephoroe The Eumenides Sophocles (translated into English prose by Sir Richard C. Jebb) The Oedipus Cycle Oedipus the King Oedipus at Colonus Antigone Ajax Electra The Trachiniae Philoctetes Euripides (translated into English prose by Edward P. Coleridge) Rhesus Medea Hippolytus Alcestis Heracleidae The Suppliants The Trojan Women Ion Helen Andromache Electra Bacchantes Hecuba Heracles Mad The Phoenician Women Orestes Iphigenia in Tauris Iphigenia in Aulis Cyclops Aristophanes (translated into English verse by Benjamin Bickley Rogers) The Acharnians The Knights The Clouds The Wasps Peace The Birds The Frogs Lysistrata Thesmophoriazusae Ecclesiazousae Plutus Volume 6 Herodotus The History (translated by George Rawlinson) Thucydides History of the Peloponnesian War (translated by Richard Crawley and revised by R. Feetham) Volume 7 Plato The Dialogues (translated by Benjamin Jowett) Charmides Lysis Laches Protagoras Euthydemus Cratylus Phaedrus Ion Symposium Meno Euthyphro Apology Crito Phaedo Gorgias The Republic Timaeus Critias Parmenides Theaetetus Sophist Statesman Philebus Laws The Seventh Letter (translated by J. Harward) Volume 8 Aristotle Categories On Interpretation Prior Analytics Posterior Analytics Topics Sophistical Refutations Physics On the Heavens On Generation and Corruption Meteorology Metaphysics