I can actually attest to the fact that national anthems, as we know of them, did not come about before the 1400s. That was part of the nationalism package (which didn't really start until the 18th to 19th century I do believe). If you wiki it, you'll find a few national anthems may have been around earlier than that period, but weren't adopted as such until well after the date they were written (1900s for most in that category). Then again, most of our language oriented critters are a bit odd since they're all speaking one big happy dialect/language. Italy didn't even have 'one language' all the way up to the early 1900s and it was in the midst of the nation-state building project (most provinces had their own dialect, which may or may not have been romantic in origin).
While I'm on this sort of topic, the printing press was invented in China around (according to Wikipedia) 1041 to 1048 and seems to have been perfected in Korea. So, we could have printing presses in DF without it violating the soft 1400s issue.
Anywho, on to my !!!questions!!! (some of which might be answered):
1) Do you plan on having the number of philosophers/schools of thought vary depending on societal phenomena? IE, can we expect to see things like an influx of philosophers during prolonged periods of war, sort of like the Axial age?
2) Someone mentioned Alexandria earlier. Which made me think of an article I read that talked about how most of Alexandria's knowledge was lost before it was burnt down. As such, are we going to eventually see certain historical figures implementing policies that erode the knowledge base? IE, such as cutting funding to maintaining libraries (and their books) and possibly even cutting academics. I'd also ask about (ideological) cronyism but that is probably so far down the road it isn't even worth asking about at this point.
Additionally, how are books going to be impacted by wear in fort mode? Is there going to be to a book maintenance labor, or, le gasp, a new sort of noble dealing exclusively with books and book maintenance?
3) There was also mention of forts within cities in the last set of questions, which makes me wonder will we (eventually) see boulevard sort of phenomena? IE, civ leaders demanding that large sections of walls be torn down and remain so for some cities/forts within cities? Or that a certain tile path always remain open to the 'heart' of a fort in fortress mode?