Is Every Civilization Doomed to Fail? - Gregory Aldrete

Summary

Historian Gregory Aldrete explains the ideas of the ancient Greek historian Polybius, who sought to understand why civilizations rise and fall—and why Rome conquered the Greek world so rapidly.

Polybius’s historical perspective

Polybius lived in the second century BC, when Rome was defeating Greek states, including his home city of Megalopolis. Sent to Rome as a hostage, he spent 16 years there, gaining insight into both the Greek world’s defeat and Rome’s political system.

He wrote a 40-volume history of Rome to explain how it came to dominate the known world in such a remarkably short time.

Anacyclosis: The cycle of governments

Polybius argued that political systems tend to move through a recurring cycle. Each sound form of government can deteriorate into a corrupt version:

1. Primitive anarchy: People initially live without organized political structures.
2. Kingship: A capable leader establishes order and earns people’s loyalty.
3. Tyranny: Later rulers inherit power and abuse it for their own benefit.
4. Aristocracy: A group of capable people overthrows the tyrant and governs collectively.
5. Oligarchy: Their successors become focused on wealth and status rather than the common good.
6. Democracy: The people overthrow the oligarchs and govern, emphasizing equality and free speech.
7. Mob rule: People take their freedoms for granted, while inequality and resentment grow. Demagogues exploit public anger for personal power, leading to disorder or the rise of a new strongman—and restarting the cycle.

Polybius saw this progression as nearly biological: one form of government tends to decay into its corrupt counterpart.

Athens as an example

Aldrete describes Athens as broadly illustrating the cycle. It moved from legendary kings to tyranny, then to aristocratic rule and democracy. Athens reached great power during its democratic period, but later demagogues encouraged harmful policies. Its defeat in the Peloponnesian War and the loss of its empire were followed by rule under kings such as Alexander the Great and his successors.

Rome’s mixed constitution

Polybius believed Rome had found a way to resist the cycle by combining elements of the three “good” forms of government:

• Monarchical element: The consuls, Rome’s leading elected officials.
• Aristocratic element: The Senate.
• Democratic element: The people, who held meaningful political power.

These parts were interdependent, and each could restrain the others. Polybius considered this balance, and the system of checks it created, the source of Rome’s strength.

The Republic’s eventual collapse

Rome’s mixed constitution did not prevent collapse permanently. In the late Republic, grievances grew among groups who felt excluded from the benefits of Rome’s expansion. Leaders including Marius, Sulla, Pompey, and Julius Caesar weakened republican institutions, used popular support and private armies, and increasingly resorted to violence.

Civil wars ultimately produced a ruler with king-like power: Octavian, later known as Augustus. His rule marked the end of the Republic and the beginning of the Empire.

Aldrete notes that historians can debate how closely Rome’s fall matched Polybius’s cycle. The theory is best treated as a useful framework for thinking about political change, not as an unquestionable rule. Its enduring question is whether civilizations can avoid decline—and what political arrangements might help them do so.

Polybius’s ideas influenced later thinkers, including Thomas Aquinas and Niccolò Machiavelli. They also shaped American political thought: John Adams drew on the cycle in his warnings about the corruption of monarchy, aristocracy, and democracy, while Thomas Jefferson sent Polybius’s history to James Madison for study during the constitutional period.

Speakers and sources featured

• Speaker: Gregory Aldrete, narrator and historian.
• Central historical source: Polybius, especially his history of Rome and his accounts of anacyclosis and the Roman constitution.
• Earlier thinkers mentioned: Plato and Aristotle, whose ideas about political cycles influenced Polybius.
• Later thinkers and political figures mentioned: Thomas Aquinas, Niccolò Machiavelli, John Adams, Thomas Jefferson, and James Madison.
• Historical figures used as examples: Theseus, Sophocles, Plato, Alexander the Great, Alcibiades, Marius, Sulla, Pompey, Julius Caesar, Octavian/Augustus, and the Scipios.