User blog comment:Madman97/The Aedra Vs. The Daedra theory/@comment-9062114-20131013024646/@comment-25109952-20131013122705

Are you blind?

http://www.imperial-library.info/content/fight-four-tenpenny-winteragain%E2%80%9D

In paragraph 6, Aka-Tusk (Or, the Oversoul Aka) says :

"You will eat nothing here, aspect Ald(Alduin),"Said the Aka-Tusk,sensing trouble. "Do not forget it was Heaven itself that shed you from me."

Black Book : Waking Dreams, an actual in-game book, says :

The eyes, once bleached by falling stars of utmost revelation, will forever see the faint insight drawn by the overwhelming question, as only the True Enquiry shapes the edge of though.

The rest is vulgar fiction, attempts to impose order on the consensus mantlings of an 'uncaring godhead. 'First,

Yet still, you will not believe me.

So here :

http://forums.bethsoft.com/topic/1421186-hold-on-saint-alissia-was-the-first-dragonborn-what-you-talkin-bout-beth/page-2?p=21748685#entry21748685

MK says there :

Alessia didn't have the power to absorb dragon souls. Hers was a much more nuanced power: to dream of liberty and give it a name and on her deathbed make Covenant with the Aka-Tusk.

And here, for proof it is a dream :

http://www.gameskyrim.com/the-godhead-t53400.html

And here :

http://www.reddit.com/r/teslore/comments/13ejex/whowhat_is_athe_godheads/

In the last one I linked, it says :

There is only one. He's the schizophrenic Dreamer in whose mind the Aurbis, that is the entirety of the Elder Scrolls universe both physically and metaphysically, resides. HE is unlike the Aedra or Daedra in that he cannot exert conscious influence, because he is unconscious in some way; he is also unlike those powers in that he is orders of magnitude above them; all of them are a tiny portion of him.

The Mythic Dawn Commentaries and the 32 Sermons of Vivec, both in-game book series, both CHIM (the realization you are one with the Godhead) and the Godhead himself is mentioned.

Proof enough?