The Enos Esoterica or On Mortal Obscurities is a lengthy and rambling tome written by Piersym Cote, in which he tries to explain objects of curiosity from a bafflingly eclectic range of cultural sources. Among his many targets are the origins of humans, the origins of other races and creatures, the reason things are the colours they are, the "true" nature of the gods, the origins of the names of gods and nations, why the moon appears to be made of stewed abalone, and what lies beyond the endless seas and in the void between the stars.

The majority of the text consists of bewildering and episodic conjecture with little firm basis in fact, and certainly no clear reasons for why he is drawing the conclusions that he does. He attempts to explain a great many matters, by using "scholarly logic" to connect existing ideas to those unexplained, but often brings in irrelevant information which he then either uses to cobble together some far-fetched story, or else twists the meaning beyond all recognition to force it to fit within his pre-existing theory.

The tome is largely useless as a source of reliable information, but it is maintained as an item of scholarly interest, for it is one of the only surviving works from the earliest days of the Kingdom of Lokren.