Never mix vodka and witchcraft.
-- Narrator (Prologue)

Importance: This is a Jones family saying that is referenced throughout the novel. Mixing vodka and witchcraft has dire consequences for Vivi and Rhys, as Vivi accidentally casts a curse that affects Rhys eight years later.

Sure, there were the occasional Lacrosse Cheaters, but [Vivi] could more than handle them, and she loved going to work on Penhaven’s campus… All in all, it was a good fit, and it made her feel . . . stable. Safe.
-- Narrator (chapter 3)

Importance: At the start of the novel, Vivi is adamant that she likes her job. Working for a non-magical department makes Vivi feel secure in her life, since magic frightens her. Vivi continues to navigate her complex relationship with her magic as the novel progresses.

Never had what Gwyn and Elaine had, this ease with magic. Both of them did spells, big and small, as easily as breathing, and yet every time...
-- Narrator (chapter 4)