I find it fascinating how self-aware the Mespotamians were of their own literary culture and history. Later rulers would do early forms of archaeology and dig up the ruins of earlier kings. The Library of Ashurbanipal has sign lists (proto-dictionaries) which go way, way back, to the early Sumerian period, and it seems the Assyrian elite could still read inscriptions that were over two thousand years old, when Nineveh fell in 612 BC.