[It's practical advise really, Flence is pointedly not on the cheap side. Then again, even if there weren't really bards --outside of fairy tales-- back where he's from, he quickly ties it up with what she says about being a performer. It seems to make sense, though he doesn't really consider it a profession one could make a load of money from. Not that he hasn't seen a fair few, even citizens as opposed to Heroes, who do make a living doing exactly that.

At least, he can talk about Temples, Crystals and various running theories about Crystallis; to more than his hearts content. Sephiroth knows well the value of bouncing ideas around and off other individuals.]

Well the Crystal of Earth is off limits - or at least as far as we know. The Calamity claimed it with the initial push when it had been awoken...before it went dormant before.