Wow. Just, wow! This book held my attention so that I could hardly put it down, and so I ended up reading it way too fast. I know I need to reread it, but I want to give it some space first. My first foray into modern YA lit was with Green's Looking for Alaska, and that book had a profound impact on me. This book goes way beyond that one in my mind. It has made me think about my own humanity, mortality, and the whole purpose of "why we're here." Thoroughly enjoyed this book, and look forward to combing through it a bit more deeply soon. I definitely need to add a few quotes from this one to my quote book!