He nodded, shook his head, nodded again.
-- Narrator (chapter 1)

Importance: This quote describes Manny’s response when Sierra asks whether Ol’ Vernon is dead. It foreshadows Ol’ Vernon’s appearance as a corpuscule as Manny first nods because Ol’ Vernon is dead. However, since Ol’ Vernon’s body is walking around, Manny shakes his head. The walking corpse is really not Ol’ Vernon, however, as it has another spirit in it, so Manny nods again to indicate that Ol’ Vernon is dead.

I'm so sorry Sierra. I tried...to do right.
-- Grandpa Lazaro (chapter 2)

Importance: Sierra’s grandfather says this to her when she goes to his room after Manny finds out about Ol’ Vernon and before she goes to the party. It is significant because it foreshadows the fact that Sierra’s grandfather tried to deny her of her heritage and banished Lucera, who is her grandmother. It also shows that he was not trying to...