Arabic Thought and Its Place in History

The introduction of Muslim influence through Spain is the one instance in which we seem to get an alien culture entering into this Roman tradition and exercising a disturbing influence. In fact, this Muslim culture was at bottom essentially a part of the Hellenistic-Roman material, even the theology of Islam being formulated and developed from Hellenistic sources, but Islam had so long lived apart from Christendom and its development had taken place in surroundings so different that it seems a strange and alien thing. Its greatest power lay in the fact that it presented the old material in an entirely fresh form.