Hazel is wrong about infinite cardinality but she is right that some infinities are larger than others. I wanted her to be wrong but right, because that’s how we muddle through as observers of the universe – forging meaning where we can find it… from fact and fiction alike. And as my brain drowned in jet-lag I thought of the months I lived here. So much of that time I was sick and crippled with anxiety but all I could think about now, as night fell, was how much you can love made-up people; and how much you can miss them.

– John Green on a return visit to Amsterdam, the city where his book, The Fault in our Stars, is set in part