Rome began as a pagan, Latin-speaking city state in central Italy during the early Iron Age and ended as a Christian, Greek-speaking empire as the age of gunpowder dawned. Everything about it changed, except its Roman identity. This was due to a unique willingness among Romans to include new people as citizens, an openness to new ideas, and an unparalleled adaptability that enabled Romans to remake every aspect of their society in ways that made it stronger and more resilient. Romans, who believed that their city was originally settled by exiles and captives, found a balance between the embrace of new people and ideas and a conservative attachment to the core features that had traditionally defined Roman society.

Roman history is a story of 80 generations of Romans who deftly challenged the rules governing their lives—and usually did so without overturning the institutions that made them safe and prosperous. In an age when people around the world are increasingly looking to charismatic leaders promising to scrap the rules governing modern states, Rome shows why states that want to endure should be repelled by the sudden, unpredictable jolts such characters provide.

To explore this topic with us is today’s guest, Edward J. Watts, author of “The Romans: A 2000-Year History.” Rather than collapse, Watts shows how Rome endured, evolved, and redefined itself for two thousand years—from the Punic Wars to the Crusades, and from Augustus to Constantine to Charlemagne.

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