No, she's made really badly: in her mind and in everything, even when it comes to sex.
-- Nino (chapter 4)

Importance: This quote is important because it is a glimpse into Nino's mind towards Lila. It is the first time the reader is able to see their affair from his perspective. Moreover, his negative comment about Lila plants a seed of hope inside Elena that she may edge in front of her friend in his mind.

Even though I had known him forever, he was made of dreams, and holding on to him forever would have been impossible: he came from childhood, he was constructed out of childish desires, he had no concreteness, he didn't face the future.
-- Elena (chapter 7)

Importance: This quote is an amazing example of foreshadowing. Uttered in the first handful of chapters in the story, it is a clear description of Nino's fleeting character. Many years later Elena, knowing this about Nino, will...