Thomas Mann, Doctor Faustus page 357

In fact there is an apocalyptic tradition which hands down to these ecstatics visions and experiences to a certain extent already framed, however odd it may seem, psychologically, that a raving man should rave in the same pattern as another who came before him: that one is ecstatic not independently, so to speak, but by rote.

Derrick Jensen, Endgame vol. 2: Resistance page 616

We're no longer in the realm of delusion, but history, which I suppose could be defined as the place where the delusions of the powerful combine with the force to make them happen.

Thomas Pynchon, Gravity's Rainbow page 395

Well. What happens when paranoid meets paranoid? A crossing of solipsisms. Clearly. The two patterns create a third: a moiré, a new world of flowing shadows, interferences. . . .

Thomas Pynchon, Gravity's Rainbow pages 237-262

Proverbs for Paranoids, 1: You may never get to touch the Master, but you can tickle his creatures.
page 237

Proverbs for Paranoids, 2: The innocence of the creatures is in inverse proportion to the immorality of the Master.
page 241

Proverbs for Paranoids, 3: If they can get you asking the wrong questions, they don't have to worry about answers.
page 251

Proverbs for Paranoids, 4: You hide, they seek.
page 262

Thomas Pynchon, The Crying of Lot 49 page 103

"I came," she said, "hoping you could talk me out of a fantasy."

"Cherish it!" cried Hilarius, fiercely. "What else do any of you have? Hold it tightly by its little tentacle, don't let the Freudians coax it away or the pharmacists poison it out of you. Whatever it is, hold it dear, for when you lose it you go over by that much to the others. You begin to cease to be."

Philip K. Dick, "The Android and the Human" in The Shifting Realities of Philip K. Dick (Lawrence Sutin, ed.) page 208

Sudden surprises, by the way--and this thought may be in itself a sudden surprise to you--are a sort of antidote to the paranoid . . . or, to be accurate about it, to live in such a way as to encounter sudden surprises quite often or even now and then as an indication that you are not paranoid, because to the paranoid, nothing is a surprise; everything happens exactly as he expected, and sometimes even more so. It all fits into his system. For us, though, there can be no system; maybe all systems--that is, any theoretical, verbal, symbolic, semantic, etc., formulation that attempts to act as an all-encompassing, all-explaining hypothesis of what the universe is about--are manifestations of paranoia. We should be content with the mysterious, the meaningless, the contradictory, the hostile, and most of all the unexplainably warm and giving--total so-called inanimate environment, in other words very much like a person, like the behavior of one intricate, subtle, half-veiled, deep, perplexing, and much-to-be-loved human being to another. To be feared a little, too, sometimes. And perpetually misunderstood. About which we can neither know nor be sure; and we must only trust and make guesses toward.

Robert Musil, The Confusions of Young Törless page 72

It struck him that he had once, standing with his father before one of those landscapes, cried out unexpectedly, "Oh, how beautiful that is" -- and had been embarrassed by his father's pleasure. On that occasion he might just as easily have said: "How terribly sad it is." It was a failure of words that tormented him then, a half-awareness that the words were merely random excuses for what he had felt.

And today he remembered the picture, he remembered the words, and he clearly recalled lying about that feeling even though he did not know why. His eye ran through everything again in his memory. But it returned unassuaged, again and again. A smile of delight at the wealth of ideas that he still clutched as though distractedly, slowly assumed a barely perceptible, painful trait...

He felt the need to persist in his search for a bridge, a context, a comparison -- between himself and that which stood silently before his mind.

But however often he had calmed himself with a thought, that incomprehensible objection remained: you're lying. It was as though he had to pass through an unstoppable division of soldiers, a stubborn remnant forever leaping out at him, or as though he was wearing his feverish fingers raw trying to undo an endless knot.

And finally he gave up. The room closed in around him, and his memories burgeoned in unnatural distortions.

Jean-Paul Sartre, Nausea p. 7

The best thing would be to write down events from day to day. Keep a diary to see clearly--let none of the nuances or small happenings escape even though they might seem to mean nothing. And above all, classify them. I must tell how I see this table, this street, the people, my packet of tobacco, since those are the things which have changed. I must determine the exact extent and nature of this change.

For instance, here is a cardboard box holding my bottle of ink. I should try to tell how I saw it before and now how I¹ Well, it's a parallelopiped rectangle, it opens--that's stupid, there's nothing I can say about it. This is what I have to avoid, I must not put in strangeness where there is none. I think that is the big danger in keeping a diary: you exaggerate everything. You continually force the truth because you're always looking for something. On the other hand, it is certain that from one minute to the next--and precisely à propos of this box or any other object at all I can recapture this impression of day-before-yesterday. I must always be ready, otherwise it will slip through my fingers. I must never² but carefully note and detail all that happens.

¹ Word left out.
² Word crossed out (possibly "force" or "forge"), another word added above, is illegible.