A real best friend would use a lot of words to make you feel somewhat good about your life when you're thinking about ending it. Like I tried to.”
-- Aaron (Part One: Chapter 1 )

Importance: Aaron is explaining why he and Brendan are only “sort of” best friends. This is the first indication that Aaron tried to commit suicide. The reader will later learn that Aaron does not remember specific details, such as the real reason he tried to kill himself.

Everyone plays a purpose, even fathers who lie to you or leave you behind. Time takes care of all that pain so if someone derails you, it'll be okay eventually.”
-- Thomas (Part One: Chapter 10 )

Importance: This is Thomas's reaction when Aaron asks if he would consider the Leteo procedure. Though Thomas has not had truly horrific experiences on which to base his thoughts, this seems like a reasonable attitude.

I've been exposed to fighting my entire life, and I never...
-- Aaron (Part One: Chapter 12 )