Lex Fridman Podcast
Lex Fridman Podcast

#498 – Anthony Kaldellis: Roman Empire, Byzantine Empire, Rise & Fall of Empires

June 30, 2026

AI Summary

5 min read

The Byzantine Empire was not a separate civilization that replaced Rome. It was the Roman Empire, continuing unbroken for another thousand years after the West collapsed. The people living in Constantinople called themselves Romans, their state was the Roman polity, and historians only invented the term "Byzantine" centuries later to distance Western Europe from an inconvenient Eastern continuation. As Anthony Kaldellis puts it, "the burden of proof is on those who would assert that what we've been calling the Byzantine Empire is something other than the Roman Empire."

What Held the Empire Together

The Roman state lasted roughly 2,200 years, from its founding in 753 BC to the fall of Constantinople in 1453 AD. Kaldellis argues that the key to its extraordinary longevity was not military might or religious fervor, but a deep, functional consensus between rulers and subjects. The emperors projected a consistent "persona" — that they were sleepless, hardworking, responsive, and accountable to their people. This was not empty propaganda. Kaldellis's research suggests that the authorities were generally sincere in their rhetoric, and subjects believed them. This belief made people willing to pay taxes and defend the state.

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What you'll learn

  • 1 (00:45) **Introduction & Defining the "Byzantine" Empire** - Kaldellis argues that the "Byzantine" Empire was in every legal and cultural sense the direct continuation of the Roman Empire, a fact obscured by Western European historians for political reasons.
  • 2 (11:05) **Grand Timeline Overview** - A rapid survey of the Roman state from its founding (753 BC) to the fall of Constantinople (1453 AD), covering the Kingdom, Republic, and Imperial Monarchy phases.
  • 3 (17:00) **The "Ship of Theseus" & The Soul of Rome** - The Roman state is defined by its continuous political narrative, not by static cultural or ethnic components. The key question is why citizens consented to be ruled.
  • 4 (19:15) **The Imperial Persona vs. Action** - The state projected a consistent persona of a sleepless, hardworking, responsive, and accountable ruler who exists solely for the benefit of his subjects.
  • 5 (24:43) **The Edict of Caracalla (212 AD) & Shared Citizenship** - This edict granted full Roman citizenship to all free inhabitants of the empire. It was a revolutionary act that created a unified legal and tax community.
  • 6 (27:35) **The Crisis of the Third Century & Diocletian's Solution** - A period of 50 years with 26 murdered emperors, hyperinflation, plague, and foreign invasions. Diocletian stabilized the empire by creating a larger bureaucracy, a universal census, and a more systematic tax system.
  • 7 (31:50) **Constantine & the Founding of Constantinople** - Constantine, a pragmatic and ruthless survivor of civil wars, founded a "New Rome" on the strategic Bosporus. The city acted as a "clamp" that unified the Eastern provinces.

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Show Notes

Anthony Kaldellis is a historian of the Roman Empire and author of “The New Roman Empire”, a comprehensive history of the Byzantine Empire (Eastern Roman Empire).
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Transcript:
https://lexfridman.com/anthony-kaldellis-transcript

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EPISODE LINKS:
Anthony’s Books: https://amzn.to/49AX7Q1
Anthony’s Publications: https://kaldellispublications.weebly.com
Anthony’s University of Chicago page: https://classics.uchicago.edu/people/anthony-kaldellis
The New Roman Empire (book): https://amzn.to/3PTFTqk
Streams of Gold (book): https://amzn.to/4fgRMRq
Byzantium & Friends Podcast: https://byzantiumandfriends.podbean.com/
The History of Byzantium Podcast: https://thehistoryofbyzantium.com/

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OUTLINE:
(00:00) – Introduction
(00:11) – Sponsors, Comments, and Reflections
(08:45) – The

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