Aristotle, the highest rated philosopher in European history, was adviser to Alexander the Great, and travelled with him to Egypt – when it was conquered – where he ‘picked up” many books.
He became the guy with most books in ancient Greece with his personal library, but most were from Egypt biggest library of the time.
When he died, all the books stolen and found in his personal library were named the books of Aristotle.
Egyptian books did not carry authors, because in ancient Africa, wisdom and knowledge could not be attributed to a person. (Authors were teachers).
Aristotle became the paramount of European philosopher and the most influential one.