User blog comment:Jack Pistol/Immortal Dovahkiin?/@comment-3492791-20120930083816/@comment-3492791-20121001031514

Now that you reworded to hopefully be more precise to what you meant to say, I can add my part.

Technically all souls are immortal. As far as I know there is no way for a soul to be truly destroyed. It is proven to be quite obvious given that there is a real afterlife. Sovngarde, Planes of Oblivion, ghosts, even those who have been soul trapped end up in the Soul Cairn. Dragon Souls have a different kind of immortality than this. The only way to kill a Dragon's body is to take the soul out of it. But if you put the soul back into it's body, the body can be resurrected. Mortals obviously can't do this.