Terry Pratchett's Discworld has a lot of these:
Main Discworld novels
- Moving Pictures
- Reaper Man
- Witches Abroad
- Small Gods
- Lords and Ladies
- Men at Arms
- Soul Music
- Interesting Times
Young adult novels
Miscellaneous
- Repeatedly in witch novels: If any ground is sacred, this ground is; if any day is sacred, this day is.
- The Sea and Little Fishes: "It’s hard to contemplate, in the grey hours of the night, that probably the only reason people would come to your funeral would be to make sure you’re dead." Granny Weatherwax can be a very heartbreaking character at times.