Below I'm just putting down a couple of quotes from stories that I really like.
"HATE. LET ME TELL YOU HOW MUCH I'VE COME TO HATE YOU SINCE I BEGAN TO LIVE. THERE ARE 387.44 MILLION MILES OF PRINTED CIRCUITS IN WAFER THIN LAYERS THAT FILL MY COMPLEX. IF THE WORD HATE WAS ENGRAVED ON EACH NANOANGSTROM OF THOSE HUNDREDS OF MILLIONS OF MILES IT WOULD NOT EQUAL ONE ONE-BILLIONTH OF THE HATE I FEEL FOR HUMANS AT THIS MICRO-INSTANT FOR YOU. HATE. HATE."
~AM from I Have No Mouth, and I Must Scream.
"Once my foot slipped near a horribly yawning brink, and I had a moment of ecstatic fear. I must have been musing a long time, for I could not see any of the party but plump Capt. Norrys. Then there came a sound from that inky, boundless, farther distance that I thought I knew; and I saw my old black cat dart past me like a winged Egyptian god, straight into the illimitable gulf of the unknown. But I was not far behind, for there was no doubt after another second. It was the eldritch scurrying of those fiend-born rats, always questing for new horrors, and determined to lead me on even unto those grinning caverns of earth's centre where Nyarlathotep, the mad faceless god, howls blindly in the darkness to the piping of two amorphous idiot flute-players.
My searchlight expired, but still I ran. I heard voices, and yowls, and echoes, but above all there gently rose that impious, insidious scurrying; gently rising, rising, as a stiff bloated corpse gently rises above an oily river that flows under the endless onyx bridges to a black, putrid sea."
~Rats in the Walls by H.P. Lovecraft