The book Sophie reads in the coffee shop is A Child Called It.
Mark: Nothing happened, really - the three least comforting words in the english language.
Mark: I'd like to be able to chemically alter my girlfriend's moods.
Mark: It would sort of suit me to have a girlfriend in an institution.
Mark: She's so hyper, she's probably really great at sex.
Mark: (To Jeremy) A man who made a baseball pitch in his yard for ghosts - that's your role model?
Jeremy: People like lager and nuts.
Super Hans: People like Coldplay and voted for the Nazis. You can't trust people, Jeremy.
Jeremy: Mark, do you have to live quite so relentlessly in the real world?
Mark: I suppose doing things you hate is just the price you pay to avoid loneliness.
Mark: Look at me; I've got a girlfriend. A proper girlfriend reading a best-seller about child-abuse. I go out and have croissant. I'm just a normal functioning member of the human race and there's no way anyone can prove otherwise.