Cold one day, sweet the next; irresistibly flirty one moment, resistibly obnoxious the next.

There's a stark difference between the words 'prodigy' and 'genius.' Prodigies can very quickly learn what other people have already figured out; geniuses discover that which no one has ever previously discovered. Prodigies learn; geniuses do.

I like the strings. I always have. Because that's how it feels. But the strings make pain seem more fatal than it is, I think. We're not as frail as the strings would make us believe. And I like the grass, too. The grass got me to you, helped me to imagine you as an actual person. But we're not different sprouts from the same plant. I can't be you. You can't be me. You can imagine another well – but never quite perfectly, you know?

...And in freedom, most people find sin.

Every second of your definitionally temporary consciousness, you are choosing how you spend something that will not last forever.

We need never be hopeless because we can never be irreperably broken.

Some wars," he said dismissively. "What am I at war with? My cancer. And what is my cancer? My cancer is me. The tumors are made of me. They're made of me as surely as my brain and my heart is made of me. It is a civil war, Hazel Grace, with a predetermined winner.