What Time the Sexton's Spade Doth Rust (Flavia de Luce, #11)

by Alan Bradley

Even the mildest irritation, sheltered, guarded, and fed, can grow into an immense and sometimes sudden rage. Dogger once remarked to me, apparently offhandedly, that rage is akin to compound interest,

“Would anyone actually do that in real life?” I asked. “Oh, yes,” Dogger said. “Much more so than in fiction. Characters in fiction must remain believable. It is not so in real life.”