Septimus: Dig, Dwemer, in the beyond. When the top level was built, no more could be placed.
Elder Scrolls, indeed. The Empire, they absconded with them. Or so they think. The ones they saw, the ones they thought they saw . . . I know of one, forgotten, sequestered.
But I cannot go to it, not poor Septimus, for I, I have arisen beyond its grasp.
Here. Well, here, as in this plane, Mundus, Tamriel, nearby, relatively speaking. On the cosmological scale, well, it's all nearby.
One block lifts the other. Septimus will give what you want. But you must bring him something in return.
You see this masterwork of the Dwemer, deep inside their greatest knowings. Septimus is clever among men. But he is but an idiot child compared to the dullest of the Dwemer. Lucky then they left behind their own way of reading the Elder Scrolls. In the depths of Blackreach, one yet lies.
Have you heard of Blackreach? "Cast upon where Dwemer cities slept, the yearning spire hidden learnings kept"
Under deep, below the dark, the hidden keep, Tower Mzark, Alftand, the point of puncture of first entry of the tapping. Delve to its limits, and Blackreach lies just beyond. But not all can enter there. Only Septimus knows the hidden key to loose the lock to jump beneath the deathly rock.
Two things I have for you, two shapes, one edged, one round, the round one for tuning. Dwemer music is soft and subtle and needed to open their cleverest gates. The edged lexicon, for inscribing. To us, a hunk of metal. To the Dwemer, a full library of knowings, but empty.
Find Mzark and its sky-dome. The machinations there will read the Scroll and lay the lore upon the cube.
Trust Septimus. he knows you can know.
Faendal: I'll see you in pieces!
J'darr: Where is it? I know you were trying to keep it for yourself J'zhar. You always try to keep it for yourself!