The Library of Alexander is believed to have been founded by [Demetrius of Phaleron]? at the behest of [Ptolemy I]?. Demetrius had been a student of Aristotle, a ruler of Athens who was later forced into exile after the death of Alexander the Great. He accepted a position in Egypt as a tutor to Ptolemy's children, and from that position worked to shift Aristotle's legacy to Alexandria. It has been widely assumed that this was done via the purchase of Aristotle's personal library, then the largest in the world, shortly after that philosopher's death in [322 BC]?.
The history of the Library over the next few centuries can be seen as an extenstion of the scholarship and research methodoly established by Aristotle in Athens.