I wouldn’t say King’s writing is never quoted. On average how many replies does it take for an H1N1 thread to have somebody mention Captain Trips. I hear a lot of people refer to mean dogs as “cujo”. The Pet Cemetery resurrection trope has become pretty common place both in horror and satire. Since I hang out with authors Annie Wilkes and Richard Bachman are characters frequently referred to. I probably hear references to King books 10 or 20 times more often than Twain.
I meant actual quotes from the texts themselves not titles or factoids about his pen names.