Board Thread:Skyrim/@comment-11474177-20130808012214/@comment-86.0.156.4-20141029154319

How would you kill Akatosh physically? You can't destroy his corpse (the planet: Akatosh) nor his aspects (the dragons).

Spiritually, you can't destroy time itself, nor find his spirit to begin with. I agree with the idea that the Dragonborn is directly spiritually related to Talos, and possibly a reincarnation of his spirit in the mortal realm.

It could in fact be that, given the Septims' (the "dragonblooded") relationship to Akatosh and how dragons' souls are infinite, the Dragonborn is a reincarnated spirit that is brought into Mundus during times of anguish; to act as the champion of Akatosh.