The curation is excellent. The quotes are grouped by theme (loss, longing, regret, isolation), allowing the reader to sink into a specific mood. The pacing allows for a cathartic build: you start with the soft pitter-patter of nostalgia and end with the thunderous roar of despair. There is a particular quote by an unknown author—"I loved you like the rain loves the pavement: desperately, completely, and destined to eventually run off"—that alone is worth the read.
Here is a breakdown of the different "types" of quotes you will find in this genre: