Small Gods

all the tropes

Small Gods (allthetropes.org) The 13th Discworld novel and a standalone, although it uses some characters and locations from Pyramids and its events influence later works.

How the Square Root of 2 Became a Number (quantamagazine.org) The ancient Greeks wanted to believe that the universe could be described in its entirety using only whole numbers and the ratios between them — fractions, or what we now call rational numbers. But this aspiration was undermined when they considered a square with sides of length 1, only to find that the length of its diagonal couldn’t possibly be written as a fraction.

Bishops move diagonally. That’s why they often turn up where the kings don’t expect them to be. Terry Pratchett, Small Gods
I used to think that I was stupid, and then I met philosophers. Terry Pratchett, Small Gods
Pets are always a great help in times of stress. And in times of starvation too, o’course Terry Pratchett, Small Gods
“What’s a philosopher ?” said Brutha. “Someone who’s bright enough to find a job with no heavy lifting,” said a voice in his head. Terry Pratchett, Small Gods

Small Gods (Wikipedia) Small Gods is the thirteenth of Terry Pratchett’s Discworld novels, published in 1992. It tells the origin of the god Om, and his relations with his prophet, the reformer Brutha. In the process, it satirises religious institutions, people, and practices, and the role of religion in political life.