The final quest we have to choose whether to save Valaste or read the Folium to get two skill points…sounds like a hard choice, but hey ZOS, did you forget something?
Shelidor had read the book! And what did he gave you when the quest finished? Shelidor's library! The dude have that book in his mind with a spell that he can put out whenever he wants, yet he failed to mention it when you are Making the choice? And after you save Valaste he still won't give you that as a reward??
One more thing…if even Sheo uses skyshards as a “skill unit”, then the old blind emperor is definitely the strongest character of all time…the dude can summon skyshards!