The Library of Alexandria Did Not Burn Down
Four events across seven centuries, only one of them a fire. What actually killed the library is duller and far more frightening, and it has an uncomfortably modern shape.
Everyone knows how the Library of Alexandria ended. There was a fire. Something irreplaceable was lost in an afternoon, and the world got measurably stupider before dinner.
It is one of the most durable images we have about knowledge, and it is wrong in a way that matters.
The library did not burn down. It took about seven hundred years to die, and most of that was neglect.
Caesar's forces set fire to ships in the harbour in 48 BCE, and the flames reached warehouses near the docks that may have held books. Aurelian's siege in the 270s CE wrecked the Bruchion quarter, where the main library stood. In 391 CE the Patriarch Theophilus ordered the destruction of the Serapeum, a secondary collection in the temple of Serapis, as part of a campaign against pagan institutions. By the Muslim conquest in 642 the library had not functioned as an institution for centuries. There was nothing left to burn.