• Cassius Dio. Roman History, Books 55–56. The narrative backbone for the decade.
• Ovid. Tristia and Epistulae ex Ponto. The exile poetry, especially Tristia 2.
• Res Gestae Divi Augusti. The thirty-five-section self-account, read at the funeral and inscribed on the Mausoleum tablets and at Ancyra.
• Suetonius. Life of Augustus, chapters 22–25, 65, 97–101. The death scene, the Teutoburg reaction, and the late exiles.
• Suetonius. Life of Tiberius, chapters 15–21. The adoption, the Pannonian command, and the final years with Augustus.
• Tacitus. Annals, Book 1, chapters 1–10 and 53. Retrospective account of the death, the succession, and the exiles.
• Velleius Paterculus. Roman History, 2.103–124. Contemporary eyewitness for the Pannonian revolt and for Teutoburg's aftermath.

• Barrett, Anthony. Livia: First Lady of Imperial Rome. Yale University Press, 2002. Essential for the final years and for the succession politics around Tiberius and Postumus.
• Galinsky, Karl, editor. The Cambridge Companion to the Age of Augustus. Cambridge University Press, 2005. Essential collected essays on the reign as a whole, especially the chapters on the Res Gestae and the succession.
• Goldsworthy, Adrian. Augustus: First Emperor of Rome. Weidenfeld and Nicolson, 2014. The best general biography for the final decade.
• Levick, Barbara. Tiberius the Politician. Revised edition, Routledge, 1999. Essential on the adoption of 4 CE and on Tiberius's role in the German and Pannonian commands.
• Wells, Peter S. The Battle That Stopped Rome: Emperor Augustus, Arminius, and the Slaughter of the Legions in the Teutoburg Forest. W. W. Norton, 2003. The best popular account of Teutoburg for the archaeological context at Kalkriese.
• White, Peter. “Ovid and the Augustan Milieu,” in Brill's Companion to Ovid (ed. Barbara Weiden Boyd). Brill, 2002. The best recent treatment of the exile and the likely political context of the carmen et error.

• Cassius Dio. Roman History, Books 54–55. The narrative backbone for this episode. Dio covers Agrippa's death in the closing sections of Book 54, and the main subsequent events in Book 55. He is working two centuries after the events from sources he does not name.
• Cenotaphia Pisana (CIL XI 1420–1421). The inscribed decrees from the town of Pisa voting public mourning for Lucius in 2 CE and for Gaius in 4 CE. Primary epigraphic evidence for how the deaths were received in provincial Italy.
• Macrobius. Saturnalia, Book 2. Preserving earlier collected anecdotes of Julia's wit. The late date (early fifth century CE) counsels caution, but the material has the texture of authentic first-century traditions.
• P. Colon. inv. 4701. The papyrus fragment of Augustus's funeral oration for Agrippa, preserved from Egypt and now held in the University of Cologne. One of the few documents in the Augustan corpus allowing us to hear the emperor in his own words.
• Pliny the Elder. Natural History, 7.149. Catalogues the private disasters that marred Augustus's public fortune, including Julia's conduct and the deaths of Gaius and Lucius.
• Res Gestae Divi Augusti, section 14. Augustus's own brief account of the adoption of Gaius and Lucius and the offices he arranged for them, written after both were dead.
• Seneca the Younger. De Beneficiis, 6.32. The fullest ancient meditation on the Julia case and what it revealed about the nature of imperial power exercised within the family.
• Suetonius. Life of Augustus, chapters 63–65. On Julia, the marriages, and the crisis of 2 BCE. The detail that Augustus wept composing the letter to the Senate and refused visitors for days afterward is chapter 65.
• Suetonius. Life of Tiberius, chapters 7–15. The central character source for Tiberius in this period. The Vipsania-in-the-street passage is chapter 7. The Rhodes withdrawal and the years on the island are chapters 10–13.
• Tacitus. Annals, Book 1. Retrospective from the Tiberian reign, essential for political analysis but coloured by what Tiberius became as emperor.
• Velleius Paterculus. Roman History, Book 2, chapters 96–102. The most important contemporary witness. Velleius served under Tiberius in Germany and under Gaius Caesar in Armenia. He is an eyewitness for the Artagira incident in 3 CE.

• Barrett, Anthony. Livia: First Lady of Imperial Rome. Yale University Press, 2002. Essential for the domestic politics and the role Livia played in the Tiberius negotiations.
• Fantham, Elaine. Julia Augusti: The Emperor's Daughter. Routledge, 2006. The fullest modern treatment of Julia, invaluable for reading against the hostile ancient tradition.
• Goldsworthy, Adrian. Augustus: First Emperor of Rome. Weidenfeld and Nicolson, 2014. The best general biography, with a good narrative of the 2 BCE crisis.
• Levick, Barbara. Tiberius the Politician. Revised edition, Routledge, 1999. The standard modern treatment, with a careful reconstruction of the Rhodes period and the reasons for the withdrawal.
• Syme, Ronald. The Augustan Aristocracy. Oxford University Press, 1986. Essential for the prosopographical reconstruction of the senatorial class and the Julia conspiracy reading.
• Syme, Ronald. The Roman Revolution. Oxford University Press, 1939. Foundational on the dynastic politics and the political interpretation of the 2 BCE crisis.

• Acta Ludorum Saecularium (CIL VI 32323). The inscribed contemporary record of the Secular Games, recovered in 1890 from the banks of the Tiber.
• Cassius Dio. Roman History, Book 54. The narrative spine for 23 to 17 BCE, including the moral legislation and the equestrian reaction in the Forum.
• Donatus. Life of Virgil. The Octavia scene and the account of Virgil's death and the deathbed request to destroy the Aeneid.
• Horace. Carmen Saeculare. The Secular Hymn, performed June 3, 17 BCE. Note the prayer for marriage and childbirth that directly references the Lex Julia.
• Horace. Odes, Book 4. The retrospective on the Parthian settlement.
• Macrobius. Saturnalia, Book 2. The Julia anecdotes, preserved from earlier sources.
• Propertius. Elegies, Book 3. Contemporary elegy on Marcellus.
• Res Gestae Divi Augusti, sections 6, 8, 14, 19–21, 29. Augustus's own account of the laws, the building programme, and the family arrangements.
• Seneca the Younger. Ad Marciam de Consolatione. The fullest ancient account of Octavia's grief.
• Suetonius. Life of Augustus, chapters 21, 29–30, 34, 63–64. The moral legislation (chapter 34), the literary circle, and the family arrangements.
• Tacitus. Annals, Books 1 and 3. Retrospective on the succession and on the moral legislation. The analysis of the Julian laws in Book 3, chapters 25–28, is the sharpest ancient critique of the legislation.
• Virgil. Aeneid, Book 6, lines 860–886. The Marcellus passage, in the descent to the underworld.

• Fantham, Elaine. Julia Augusti: The Emperor's Daughter. Routledge, 2006.
• Galinsky, Karl. Augustan Culture. Princeton University Press, 1996. Essential on the moral legislation and its relationship to the literary programme.
• Goldsworthy, Adrian. Augustus: First Emperor of Rome. Weidenfeld and Nicolson, 2014.
• McGinn, Thomas. Prostitution, Sexuality, and the Law in Ancient Rome. Oxford University Press, 1998. On the Lex Julia de Adulteriis and its enforcement.
• Syme, Ronald. The Roman Revolution. Oxford University Press, 1939.
• Treggiari, Susan. Roman Marriage: Iusti Coniuges from the Time of Cicero to the Time of Ulpian. Oxford University Press, 1991. The standard reference on Roman marriage law and the Augustan legislation.

This episode has been drafted primarily from Suetonius's Life of Augustus. Suetonius was writing in the early second century CE, a century after Augustus's death, with access to the imperial archives as Hadrian's private secretary. Almost all the physical description, the working habits, the superstitions, and the details of the household come from his Life. In the cases where they do not come from Suetonius, they are usually in Cassius Dio, writing another century later still from Greek-speaking Bithynia in Asia Minor—modern northwestern Turkey.

Both sources have limitations. Suetonius is thematic, rather than chronological. He groups anecdotes by category—ancestry, physique, virtues, vices, notable sayings, superstitions, death—rather than narrating events in order. This makes his Life of Augustus a strange reading experience for a modern biographer, because it is not really a biography, in our sense. It is a character portrait assembled from archival material and organised by theme. It is also, in places, organised to illustrate a moral conclusion Suetonius has already reached. When he reports that Augustus was moderate in his diet and modest in his household, he is not only telling us what the archive says. He is also telling us what a good emperor ought to look like, and holding Augustus up as the example.

Dio is more chronological, but further from the events and working, for this period, from sources he does not name. His account of the 23 BCE illness is the fullest we have. It is not necessarily the most accurate, because the details of a sickroom scene reach him across two centuries, and what he records may already have been shaped by the political uses to which the story was put.

What neither of them can see is the ordinary population of the empire. Augustan Rome had roughly a million inhabitants. The Italian peninsula had perhaps six million. The empire, from Spain to the Euphrates, held fifty or sixty million. Almost nothing in Suetonius or Dio is about any of them. The empire that Augustus administered through his correspondence did not, in the sources, contain the people it was administering. Tacitus's famous analytical verdict, quoted last episode, that the principate was built on grain for the people, bonuses for the army, and the sweetness of peace for everyone else, is, among other things, the rare ancient moment when one of the senatorial historians looks outside the senatorial chamber and names who the settlement was actually for. It was for the soldiers who got their pay, for the urban poor who got their grain, and for the propertied classes who got safety. The people it was paid for by were the provinces, which Augustus governed, but the sources do not describe.

That absence is the largest thing about the Augustan period that the literary tradition does not tell us. The archaeology is doing some of that work now. The inscriptions, the papyri from Egypt, the provincial census records—these are being used by modern scholars to recover the empire that Augustus built for other people to live in. In this episode, I have followed the literary sources because the character portrait is what they are best at, and because the question of who Augustus was as a person is the question the sources were actually trying to answer.

• Cassius Dio. Roman History, Books 52–53. The fullest narrative of the settlement years and the 23 BCE illness.
• Donatus. Life of Virgil. For the literary patronage relationships.
• Horace. Odes, Books 1–3. Published in 23 BCE, the same year as the illness.
• Res Gestae Divi Augusti. Augustus's own account, read as the official version.
• Suetonius. Life of Augustus. The indispensable source for character, physical detail, working habits, and household.

• Eck, Werner. The Age of Augustus. Blackwell, 2003. Short, rigorous, excellent on the mechanisms of the settlement.
• Galinsky, Karl. Augustan Culture. Princeton University Press, 1996. The standard modern account of the cultural programme and its poets.
• Goldsworthy, Adrian. Augustus: First Emperor of Rome. Weidenfeld and Nicolson, 2014. The best modern biography, particularly strong on the administrative improvisation of the early settlement.
• Syme, Ronald. The Roman Revolution. Oxford University Press, 1939. The foundational modern analysis, still essential after eighty-five years.

• Augustus. Res Gestae Divi Augusti (“The Deeds of the Divine Augustus”). Augustus's own first-person summary of his career and achievements, inscribed on bronze tablets and posted throughout the empire. The religious restoration is mostly in chapters 8, 10, 12, 13, 20, and 21—the temple restorations, the Janus closures, the Ara Pacis, the assumption of the Pontifex Maximus. Loeb Classical Library edition (with English translation).
• Cicero. De Divinatione (45 BCE). The Roman intellectual position on augury and divination, written by a sitting augur. Book One defends divination; Book Two demolishes it. Loeb Classical Library edition.
• Cicero. De Natura Deorum (45 BCE). The fullest ancient account of educated Roman thinking about the gods. Three speakers representing the Epicurean, Stoic, and Academic positions. Loeb Classical Library edition.
• Livy. History of Rome. Numa and his religious institutions are in Book 1. The first lectisternium is in Book 5. The Cybele arrival in 204 BCE is in Book 29. The Bacchanalian crisis of 186 BCE is in Book 39—the longest single ancient narrative of a Roman religious panic. Penguin Classics translation by Aubrey de Sélincourt for the early books; Loeb editions cover the rest.
• Lucretius. De Rerum Natura (mid-first century BCE). The major surviving Epicurean text, and one of the greatest works of Latin verse. Lucretius's systematic argument that the gods are real but irrelevant, that the soul dissolves at death, and that religion is the source of most human misery. Penguin Classics translation by Ronald Melville.
• Ovid. Fasti (early first century CE). The Roman religious calendar in verse—six surviving books, one for each month from January to June. The single best ancient source for the festivals and rituals that punctuated the Roman year, including the Cybele/Claudia Quinta episode in Book 4. Penguin Classics translation by A.J. Boyle and R.D. Woodard.
• Plutarch. Parallel Lives. The Life of Numa is the major ancient narrative of Rome's religious founder. The Lives of Caesar, Cicero, and Antony provide most of what we know about the religious dimensions of the late Republic—Caesar's election as Pontifex Maximus, Cicero's augural service, the propaganda war of the 30s. Penguin Classics translations available for all the relevant Lives.
• Senatus Consultum de Bacchanalibus (186 BCE). The surviving bronze decree, now in the Kunsthistorisches Museum in Vienna. One of the oldest surviving Latin prose documents and the contemporary record of the Bacchic suppression that Livy 39 narrates. The Latin text is in CIL I² 581 with translations widely available online.
• Suetonius. Divus Augustus. Augustus's biography. Chapters 30 and 31 specifically address the religious restoration programme, including the eighty-two temples and the management of the priestly colleges. Penguin Classics translation by Robert Graves.
• Virgil. Aeneid. The founding epic of Augustan Rome, and the most sophisticated single statement of the Augustan religious-political programme. Aeneas's pietas as the organizing virtue of the poem, the burning of Troy and the rescue of the household gods in Book 2, the descent and the parade of future Romans in Book 6. Robert Fagles translation (Penguin Classics) is the standard modern English version.

• Beard, Mary, John North, and Simon Price. Religions of Rome. Cambridge University Press, 1998. Two volumes. The standard modern scholarly treatment, and the work this episode draws on most heavily.
• Rüpke, Jörg. Religion of the Romans. Polity, 2007. A clear, sociologically-minded treatment of Roman religion as a system of social practice rather than belief. Particularly good on the institutional and political dimensions.
• Scheid, John. An Introduction to Roman Religion. Indiana University Press, 2003. The best short modern treatment for the general reader.

• Cassius Dio. Roman History, Books 50–51. The fullest ancient narrative of Actium; read with awareness of the Augustan shadow.
• Horace. Odes 1.37 (the Cleopatra ode). The most complex poetic response to the battle and its aftermath.
• Plutarch. Life of Antony, chapters 60–86. The essential account of the final years, Actium, and the deaths.
• Suetonius. Life of Augustus. Essential for Augustus's own account of his constitutional arrangements and the Eutychus anecdote.
• Tacitus. Annals, Book 1 opening. The indispensable counter-reading; the most compressed and precise analysis of what the principate actually was.
• Virgil. Aeneid, Book 8. The shield of Aeneas; the Augustan ideological framework at its most artistically powerful.

• Carter, John. The Battle of Actium. Hamish Hamilton, 1970. The most focused scholarly treatment of the battle itself and the strategic question of what the plan actually was.
• Goldsworthy, Adrian. Augustus: First Emperor of Rome. Weidenfeld and Nicolson, 2014. The best modern biography; presents the principate as improvised rather than planned, which is probably closer to the truth.
• Roller, Duane. Cleopatra: A Biography. Oxford University Press, 2010. The most scholarly modern treatment; essential on the question of the asp versus prepared poison.
• Schiff, Stacy. Cleopatra: A Life. Little, Brown, 2010. The most readable modern account; particularly strong on Cleopatra's death and the sources' disagreements about it.
• Syme, Ronald. The Roman Revolution. Oxford University Press, 1939. The foundational modern analysis of how Augustus built his power; still indispensable after eighty years.

• Appian. Civil Wars, Books 4–5 (c. 150 CE). The fullest surviving narrative of the period 49–31 BCE. Essential for the Sextus Pompey campaign, the confrontation with Lepidus at Messana (5.122–126), and the political narrative of the Triumvirate. Drew on sources now lost, probably including Asinius Pollio.
• Cassius Dio. Roman History, Books 48–51 (c. 230 CE). Continuous narrative from Philippi to Actium and the Augustan settlement. More systematic than Plutarch but less vivid; Octavian-favorable. Important for the Donations of Alexandria and the reading of Antony's will.
• Plutarch. Life of Antony (c. 100 CE). The essential biographical source. Plutarch drew on Asinius Pollio, who knew Antony personally; Dellius, who served on the Parthian campaign and wrote a memoir of it; and Antony's own memoir of the same campaign. Key passages: chapters 24–31 (Tarsus and Alexandria); 32–42 (the Triumvirate, Perusine War, Brundisium, Misenum); 50–54 (Octavia, Ventidius and Gindarus); 55–71 (the Parthian campaign); 72–75 (Donations of Alexandria).
• Velleius Paterculus. History of Rome, Book 2 (c. 30 CE). Near-contemporary, written under Tiberius. Hostile to Antony and admiring of Octavian, but his chronology is sometimes more reliable than later sources. His brief account of the Lepidus confrontation (2.80) confirms the main outlines of Appian's narrative.

• Goldsworthy, Adrian. Antony and Cleopatra. Yale University Press, 2010. The most thorough recent character treatment of both figures.
• Huzar, Eleanor. Mark Antony: A Biography. University of Minnesota Press, 1978. The standard scholarly biography.
• Roller, Duane. Cleopatra: A Biography. Oxford University Press, 2010. Essential for the Egyptian and Ptolemaic context, and particularly good on the nine-language question.
• Syme, Ronald. The Roman Revolution. Oxford University Press, 1939. The foundational modern work on the period. Syme's argument that the Augustan propaganda apparatus has continued to shape how we understand this period is the frame for this episode.