The themes of this book are truely universal. Life, death and the Great Perhaps. And John Green does it well, intertwining the mystery of death and personal tragedy, and puts it in context with teenage life. I would recommend this book to every teenager (or postteen), that have experienced loss. Go read this book. I think it would have been great for me 10 years ago, but unfortunately it didn't do its job for me. I must be too old.