Earwen

“No live organism can continue for long to exist sanely under conditions of absolute reality; even larks and katydids are supposed, by some, to dream. Hill House, not sane, stood by itself against its hills, holding darkness within; it had stood so for eighty years and might stand for eighty more. Within, walls continued upright, bricks met neatly, floors were firm, and doors were sensibly shut; silence lay steadily against the wood and stone of Hill House, and whatever walked there, walked alone.”
― Shirley Jackson, The Haunting of Hill House

“I have a meanness inside me, real as an organ. Slit me at my belly and it might slide out, meaty and dark, drop on the floor so you could stomp on it.”
― Gillian Flynn, Dark Places

“Humans, as a rule, don't like mad people unless they are good at painting, and only then once they are dead. But the definition of mad, on Earth, seems to be very unclear and inconsistent. What is perfectly sane in one era turns out to be insane in another. The earliest humans walked around naked with no problem. Certain humans, in humid rainforests mainly, still do so. So, we must conclude that madness is sometimes a question of time, and sometimes of postcode.

Basically, the key rule is, if you want to appear sane on Earth you have to be in the right place, wearing the right clothes, saying the right things, and only stepping on the right kind of grass.”
― Matt Haig, The Humans

“Your error is fundamental to the human psyche: you have allowed yourself to believe that others are mechanisms, static and solvable, whereas you are an agent.”
― Seth Dickinson, The Traitor Baru Cormorant