Esteemed Loremasters,
Its widely believed that when someone dies their soul goes to the Dreamsleeve, is stripped of memory, and reborn in a new body. There are several cases there personalities persist after death (Pelinal, though he may be et'Ada, and the wife in the Revenge Served Cold quest in Oblivion [she blesses you at the end of the quest]). The priestess at the beginning of Skyrim seems to be implying that the souls of the dead go to Aetherius. My questions are:
1. Do souls go to the Dreamsleeve and thus reincarnate or to Aetherius/heaven (persistence)?
2. ^What about the soul of Nerevar?
3. ^Was the Dragonborn a slain dragon whose soul entered the Dreamsleeve and was reborn?
4. What happens to the souls of dragons not "devoured" by a Dragonborn?
5. Does personality persist and/or can it be recovered post-reincarnation?
Your humble servant,
scourgicus
1. Either or both, but they're just different forms of the same thing. Soul-energy will seek out similarly aligned soul-energy.
-For souls aligned with Aedric forces, this means the soul-energy will seek out a growing fetus inside a similarly aligned mother (with some consideration for the soul of the father? Likely, but unclear), since there are no other reservoirs of this soul-energy, since the Aedra only exist as fragments in the souls of mortals. Souls closely aligned with Shor or Akatosh may follow different rules in certain circumstances (see below)
-Soul energy can shift alignment. When a daedra corrupts the soul of a mortal, some portion of his soul-energy is altered to resemble the daedra in question, and so when the mortal dies his soul-energy will seek out the largest reservoir of like energy; the Daedra itself.
-Unlike the rest of the Aedra, Shor has a large extant reservoir of soul-energy: his heart. A strongly shor-aligned soul (almost always a Nord, who are his purest descendants) who dies in battle (as Shor did) will be drawn to the Heart of Lorkhan instead of a fetus. This state what is interpreted as Sovngarde by the souls that inhabit it. At a certain point, Sovngarde accumulates enough soul-energy to become self-aware, at which point the fragmented memories of Shor himself begin to reemerge, leading him to attempt to return to Mundus. The result is what's called a Shezzarine, and while they are quite powerful, due to having much more soul-energy than a regular man, they also tend to be quite mad, because they have fractional memories of being a God.
-Though Akatosh does appear to be an ancestor of the mortal races of men and mer, he is unique in that he also subdivided into a very different race, the dragons. A mortal whose soul is strongly aligned to Akatosh is called a Dragonborn, and his soul is very similar to the soul of a dragon. Thus, when a dragon dies, his soul will seek out the largest similarly aligned mass of soul-energy nearby... so a dragon killed near a dragonborn will have his soul absorbed by the dragonborn.
-Argonians likely follow a very different process. The Hist themselves are living reservoirs of Argonian souls, and so when an Argonian dies the soul is returned to the Hist, reabsorbed into their weird collective intelligence until such time as the Hist decide to spawn a new Argonian.
2. The Nerevarine is simply a soul which happened to have the exact makeup of Nerevar's by chance (or, if Argonian, by the design of the Hist for their own purposes)
3. Not likely, since dragons are very nearly all dead at the time the main character of Skyrim would have been born. The dragonborn was probably just the chance mating of two very Akatosh-heavy souls who mated and happened to get a near-purely Akatosh aligned offspring. (or, if Argonian, by the design of the Hist for their own purposes)
4. EDIT: misread the question. It's not clear what happens to a soul with "noplace to go". I theorize that Dragonborn began to be born because of the wealth of Akatosh-aligned energy without places to go created by the death of dragons and the fact that dragons don't have the ability to reproduce, increasing the available pool of said energy. There's likely a supply/demand mechanic at play here, so the soul that makes up a fetus is based partially on the makeup of the souls of the parents, but also has some connection to the soul energy available.
5. Yes, in the sense that a personality is based on the makeup of the soul.
When a Dragonborn dies, are the souls he devoured released, or do they stay amalgamated to his soul?
Souls are divisible; all souls are fragments of the Godhead via several subgradients and recombinations thereof. The energy will likely stay together in the short term, since they aren't many dragons being resurrected or dragonborn being born, and they thus have noplace else to go.
When a Dragonborn is slain by another Dragonborn, is his soul devoured?
Yes, dragonborn can absorb the souls of other dragonborn. This how Martin Septim absorbed the souls of his ancestors when he shattered the Amulet of Kings. Presumably, dragons can absorb the souls of other dragons.
Do the devoured souls inhabit some kind of "inner realm" of the Dragonborn, the kind of inner realm which has been visited by the Dragonborn inside Azura's star?
The souls are integrated into the soul of the Dragonborn... but really, all realms (including Mundus) are just illusions created by the souls that inhabit them... so yes, the absorbed souls may well experience the process as some kind of weird afterlife, just as the souls absorbed by the Daedra experience their new state, and the souls absorbed into Sovngarde.
Is there a huge "inner realm" inside geode veins? Does it already contain some souls?
If there are no souls there, there is no realm, since as I noted, all reality is simply a projection of the souls that inhabit it.
Is the "soul" of a Dragon really devoured by a dragonborn, or is it just some part of the Dragon's knowledge? (After all, if the absorption was complete, one would expect that the Dragonborn would have acquired quickly a huge knowledge about the Dragon wars upon slaining his first Dragon...)
Absorbing a soul is not the same as absorbing the memories. Note that killing dragons doesn't teach you any new dragon words, it simply gives you the power to
use those words.
My hypothesis has been, for some time, that the various godly-aligned afterlives are temporary halters on re-integration. You have 'til the kalpa ends, buddy, then you go back in the slop pot.
Well at the end of the Kalpa,
everything is reintegrated... or mostly everything, at any rate. That's what Alduin does, that's his function, to go around and forceably reintegrate (ie "eat") everything to reform the Godhead, which means swallowing up Mundus, all the mortals therein, all the various realms of Oblivion (and all the souls absorbed by them), as well as Magnus and the other lesser entities that swim around in Aetherius, whatever state they're in. Once everything's been swallowed up into one being, that being is the Godhead, who then starts to split up once more.