considering the Christian world, namely the Roman Empire which inherited the Greek culture, was overwhelmed by waves of barbarian invasions, and then the advance of Islam, which took over the lands in which those philosophies developed, it is not hard to see why knowledge of them faded in Western culture during the dark ages when people struggled to stay alive and cling to their own patch of rock.
much of the knowledge we have of these philosophers is preserved in the commentary of early Christian writers which survive to this day.
The Roman empire shrank of course, but it did not disappear at all until 1452AD, that is easily five hundred years after the Dark Ages.
The idea that the Greek Philosophers were lost to Christianity is nothing but a myth. It has somehow captured the popular imaginiation, but it is as ridiculous as stating that Greek Philosophy was lost to America because it was not regularly taught in or beyond rural Appalachia for a few generations. In Charleston, Philadelphia and Boston that was not the case at all.
The “Dark” Ages happened in northern Europe (modern France and Germany and some nearby other places) from about the Fifth Century until about the Ninth or Tenth Century.
What is so dark about them is that literacy fell and we don’t have a very clear historical record of the period in those areas. This is not true for those areas that were in the Byzantine (Roman) empire at all, nor along the Mediterranean coast nor Rome and Ravenna.
This map shows the extent of that state at in the early eight century, smack dab in the middle of what is called the “Dark” Ages. Classical training in rhetoric and logic and the “sciences” continued.
Aristotle and Plato were well known in these places, and these were Christian people.
The only problem with the northern areas is that they had economically declined. Christianity did not lose knowledge of the ancient philosophers at this time, only the Franks (essentially) had no interest in this higher learning, considering the prohibitive cost and the apparent lack of utility. It was a brutal era for those people.
The Frankish bishops of the church were so poorly educated that they were not present the Seventh Ecumenical Council in 787AD, because they were thought to be unable to contribute! There were 367 bishops in attendence but the Frankish bishops were simply not invited.
The society was a bit superstitious. The Franks had introduced trial by ordeal as a judicial method (It had not been known to the other Germanic people and not previously used by the Romans nor the Celts), and had the bishops presided over these affairs. Eventually the sensibility of the better educated clergy was able to succesfully oppose the practice. A Council at Aachen, called by Charlemagne in 798AD, condemned witch hunts and suggested reforms of the local church.
Later (circa the year 1000, roughly the tail end of the “Dark” Ages), the Roman Empire had reached this size:
Again, no problem learning about Aristotle or Plato here. One can easily see that there were parts of modern Italy included in this nation-state throughout the period. The problem was in the Frankish, Lombardic and Gothic territories to the north. The wealthy and powerful did not train in the classics, and the rest were dirt poor.
One difference that may account for the myth that Greek philosophy was lost to Christianity is that the Greeks studied the ancient philosophers but did not use philosophy to help develop theology. They were (and are) kept as separate disciplines.
{In the same way the Greeks were very adept at sculpture and decorated public places thoughout their nation with this method, but did not employ this technique within their church buildings.}
Thus, when the scholastic masters of the west began to study the ancient philosophers (after a hiatus of perhaps five centuries) they did not shy from applying these ideas and techniques to their religious ideas, but the Greeks did not likewise participate in this development.
That’s just how it is.
Michael