Itzcoatl Orders the Old Codices Burned
The new Mexica state destroys its own written history and replaces it with a version that glorifies Huitzilopochtli
Quick facts
- Ordered by
- Itzcoatl, fourth Mexica ruler
- Associated adviser
- Tlacaelel
- Source
- Florentine Codex
- Effect
- Pre-1430 Mexica history known only through the post-burning official version
What happened
Soon after the Triple Alliance's founding, Itzcoatl ordered the burning of the existing pictographic codices that recorded the Mexica's earlier history, according to the Florentine Codex compiled decades later under the Spanish friar Bernardino de Sahagun. History of Information's summary of the episode describes this as a deliberate act to develop a state-sanctioned history that venerated Huitzilopochtli as the Mexica's central god, and later chroniclers attribute much of the intellectual work behind this rewriting to Tlacaelel, who is said to have argued the old records contained falsehoods unworthy of the new empire. The reasoning attributed to Itzcoatl in the Florentine Codex is that it was not fitting for common people to know the old paintings, since the true history could be dangerous knowledge in the wrong hands.
Why it matters
This destruction means that almost everything known about the Mexica before 1430 comes filtered through the version of history the Triple Alliance's founders chose to keep. It is a rare documented case of a state consciously erasing its own past to construct a more useful one, which is part of why modern historians treat Mexica origin stories with caution rather than as settled fact.
How we know
The episode is recorded in the Florentine Codex, a bilingual Nahuatl-Spanish encyclopedic work compiled from indigenous informants after the conquest, making it a secondhand account of a decision made roughly a century before it was written down.
Sources
- History of Information. The Aztec Emperor Itzcoatl Orders the Burning of All Historical Codices · General sourcehistoryofinformation.com · Cited as a "reference" source (no stronger domain match). · Link is live and its text matches the event's key terms (Jul 2026)
- World History Encyclopedia. Chinampas: Mexico's Human-Made Agricultural Islands · Reputable sourceworldhistory.org · The domain "worldhistory.org" is on our Reputable source registry.
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