As a matter of fact, barbarism did break out after the flower had fallen from Neoplatonism.
There was no indigenous recorded history of the country, the people being steeped in barbarism and devoid of any written language.
War is the ultimate barbarism, the primitive belief that fighting determines who is right—but of course it doesn't.
Contempt for reason and science leads in the end to barbarism - its necessary consequence being the rudest superstition.
It may have existed in the world too long: it did not come into existence too early; and with all its shortcomings it exercised a great and wholesome influence in raising the medieval world from barbarism to civilization" (p. 27).