I will not tell the story of The Mars Volta's experience with Soothsayer the talking board (ouija), Goliath, and the other personalities they encountered along the way. It has been told many times by many people and is easy enough to find.
However, I do wish to share some of the sayings that eventually (after much turmoil) became the lyrics on the album, The Bedlam in Goliath.
I find the communications that became the bridge between these souls to be some the most beautiful pieces of literature I've ever come across. They are cryptic, chilling, and beautiful all at the same time.
Also, I can't post all of these lyrics without also posting music from the album, so after all of the lyrics there will be two songs, a sediment to hold it all up.

Metatron:
"The vault that I call home
It falls beneath your palms
Before I crawl my way out she calls
When you're standing right outside my window..."

"In the dead plot you dream in
Ten go away
Ten born of pray
Ten go away"

Cavalettas:
"So if you break me a mirror
Hang the broken pieces of a place that isn't here"

"And the names you planted, drop the seed into a hole
If you force me often, I might jump off the board."

"Don't ignore my presence, hidden reads the scroll
By the time I asked her, the earth fell off the tongue
What once was laughter, corrosive I became
Where a scarlet bruise grows, sprout the fault we own"

Tourniquet Man:
"I've seen the only living traces flicker in the sulphur
And the ones who do believe me place your favour
Before you lay your question down there's a matter of the payment..."

"Let me be your Tourniquet Man
Let me keep you as a favour
Let me be your Tourniquet Man
Let me keep you as a favour
When I hear your fingers they will spell my name
As I trade the faces of the holders."

"I can't diminish anymore if I chose to dissolve in you
There's so much we can lose"

Agadez:
"I'm nowhere near this place you wear
It's unforgivable, it knows that I am visible
Broken mirrors and useless prayer
This lock is healing me, you know you come so willingly
There burns a kiss with serpent scales
There is no miracle, I lost your miracle"

Soothsayer:
"This deceit has no arms
Bended will take what's yours
Calling me
She's calling me
This it may have come to falter
We have become these pleads"

Ouroboros:
"Of all the warnings that you gave me
With all components in the fault
Have you ever heard me scraping?
It will be hard to hold."

"They lost the presence they were holding
Looks like the tenants flickered off
If the cell that holds me breaks me
It will be hard to hold"