I don't think there's anything more that I can say about this book that hasn't already been said: luminous, pitch-perfect, romantic, a triumph. It's a devestating and yet wonderful read. John Green's writing is almost TOO good, if that makes any sense. I love the interaction/dialogue between his characters, but I can't help but feel that NO ONE talks like that in real life. At the same time, that's why I love his books. The characters are like witty superheroes that put our thoughts so beautifully into words and say all the things we wish we could say. I hardly ever highlight passages from books, but Green's are (to use a phrase from the book) lit up like a Christmas tree. A few of my favorites:

"As he read, I fell in love the way you fall asleep: slowly, and then all at once."

And all of the passages on infinity were a revelation:
"It seemed like forever ago, like we'd had this brief but still infinite forever."
"You gave me a forever within the numbered days"

and the last pages of the book, are all one big highlight.

If you're looking for the meaning of life, this book has got a lot of answers.