"Remember - when you hear the song of the Turtle, you must put aside all other things and tell this story." 

― Roland Deschain [The Dark Tower VI]

“See the TURTLE of enormous girth!
On his shell he holds the earth. 
His thought is slow but always kind; 
he holds us all within his mind .
On his back all vows are made; 
he sees the truth but mayn't aid. 
He loves the land and loves the sea, 
And even loves a child like me.

On his back the truth is carried, 
And there are love and duty married. 
He loves the land and loves the sea, 
And even loves a child like me.”

― Maturin’s Poem [The Dark Tower] 

"Ever thought of selling your horse?" Rick asked. He wished to god he had a horse, in fact any animal. Owning and maintaining a fraud had a way of gradually demoralizing one. And yet from a social standpoint it had to be done, given the absence of the real article. He had therefore no choice except to continue. Even were he not to care himself, there remained his wife, and Iran did care. Very much.

Barbour said, "It would be immoral to sell my horse."

"Sell the colt, then. Having two animals is more immoral than not having any."

― Do Androids Dream of Electric Sheep? <Philip K. Dick>

“The Matrix has its roots in primitive arcade games,' said the voice-over, 'in early graphics programs and military experimentation with cranial jacks.' On the Sony, a two-dimensional space war faded behind a forest of mathematically generated ferns, demonstrating the spatial possibilities of logarithmic spirals; cold blue military footage burned through, lab animals wired into test systems, helmets feeding into fire control circuits of tanks and war planes. 'Cyberspace. A consensual hallucination experienced daily by billions of legitimate operators, in every nation, by children being taught mathematical concepts... A graphic representation of data abstracted from the banks of every computer in the human system. Unthinkable complexity. Lines of light ranged in the nonspace of the mind, clusters and constellations of data. Like city lights, receding...” 

― Neuromancer <William Gibson>

“Luck's the word those with poor hearts use for ka, Susannah of New York.” 

― Roland Deschain [The Dark Tower: The Wind Through the Keyhole]

“Once men turned their thinking over to machines in the hope that this would set them free. But that only permitted other men with machines to enslave them.”

― Dune <Frank Herbert>