From Alexandria to Islam
Most philosophers date the end of the Classical period by the murder of Hypatia in 415 AD, as the philosophical tradition in Alexandria stopped with her.
In fact, much of what we have retained from Alexandria was transmitted to Harran, a major ancient city in the southeast of what is today Turkey, where the Ageless Wisdom survived for about 500-600 years, until its destruction around 1000 AD, before it moved on to Byzantium. And so the Islamic world became the custodian for the Alexandrian tradition during the Dark Ages, where it carried on and thrived until it went to the West and became the Renaissance.
Professor Bill Foley discusses how without the Muslims, and their enlightened ways, we would not have access to much of the Ageless Wisdom teachings that we enjoy today.