“A waste is a nine-year-old boy playing catch with the roof of his garage who already understands that his existence makes for the perfect insult- gay. "You're so gay" a. k. a. stupid a. k. a. dumb a. k. a. wrong. Do you have any idea how gross it feels to hide inside the pile of lies it takes to make you, Sweet Angel, comfortable?”

t-shirt worn by Pratchett at conventions https://www.scotsman.com/lifestyle/culture/books/stephen-mcginty-sir-terry-pratchett-a-class-act-1-3718745 https://books.google.ca/books?id=n78kYbvUd_8C&pg=PA230&lpg=PA230&dq=%22tolkien%27s+dead%22+pratchett+shirt&source=bl&ots=uosL5-E7O9&sig=rMN8J7liwEBmaE92G4EWLunv2wk&hl=en&sa=X&ved=0ahUKEwjBmL6nr-DbAhUB6YMKHd9XALoQ6AEIoAEwGQ#v=onepage&q=%22tolkien's%20dead%22%20pratchett%20shirt&f=false
Misc

Source: As quoted in "Who knows?", The Guardian (26 October 2004)

First lines, Ch. 1
Variant translation: Somebody must have slandered Joseph K., for without having done anything wrong he was arrested one fine morning.
Source: The Trial (1920)
Context: Someone must have been telling lies about Joseph K., for without having done anything wrong he was arrested one fine morning. His landlady's cook, who always brought him his breakfast at eight o'clock, failed to appear on this occasion. That had never happened before.

K-Linesː A Theory of Memory (1980)
Context: When you "get an idea," or "solve a problem," or have a "memorable experience," you create what we shall call a K-line. This K-line gets connected to those "mental agencies" that were actively involved in the memorable event. When that K-line is later "activated," it reactivates some of those mental agencies, creating a "partial mental state" resembling the original.

Source: Dragon Wytch

The space implied thereby is therefore bounded, of finite total volume, and of a present "radius of curvature" <math>R = \frac{1}{K^\frac{1}{2}}</math> which is found to be of the order of 500 million light years. Other observations, on the "red shift" of light from these distant objects, enable us to conclude with perhaps more assurance that this radius is increasing...
Geometry as a Branch of Physics (1949)

Source: Trainspotting

5. The Rules of Probability. p. 78.
Understanding Uncertainty (2006)