The Library of Alexandria has become the symbol of ancient knowledge lost, but its actual history is considerably more complicated than the popular image suggests. Founded under Ptolemy I (or possibly Ptolemy II) in the early 3rd century BC, it was part of the Mouseion — a research institution that was essentially the first research university.

The library's collection-building methods were aggressive to the point of piracy: ships entering Alexandria's harbor reportedly had their scrolls confiscated and copied, with the originals retained and copies returned. The ambition was to collect all written knowledge — ho bios (all books) was the stated goal according to ancient sources.

The canonical figure of 700,000 scrolls may be exaggerated, but the library was certainly the largest collection in the ancient world. Working scholars — Eratosthenes, Callimachus, Aristarchus of Samothrace — used it as a research tool. The library's scholarly work produced the first systematic bibliographic catalog (Callimachus' Pinakes) and the foundations of literary criticism.

The 'burning of the library' as a single catastrophic event is a myth. Caesar's fire in 48 BC may have destroyed warehoused books awaiting shipment; the major library in the Brucheion palace district gradually declined during the political disruptions of the 3rd century AD; the Serapeum library was destroyed by Christian mobs in 391 AD. The knowledge loss was real but occurred gradually over centuries.