According to old Elven scholars, all the species can be parted into a set of casts or ways to categories the creatures of the world. This was the lens many of their descendants saw the world through, and to some extend many modern societies still view the world through this lens although with some changes, many humans for example who now follow the gods do not see themselves as the unborn, but the chosen of Raziel or whatever god they may follow, while those who still follow the old ways reject this devision of the species entirely.