Although I agree with a lot of what you said, I perceive the last part, your post-scriptum, to be a little bit distorted. The Renaissance had many sources. One of them was the massive intellectual immigration from the crumbling Byzantine Empire, thus serving for much of intellectual works as a bridge over the time (from antiquity to enlightened medieval period) and space (near east to all over the Europe). And it was mostly Greek in its cultural background.
