Edmund: Consequences, David. It's the little things.
David: The little things... there's nothing bigger, is there?
Julie: Why did you tell Brian I was your "Fuckbuddy"?
David: I never said that.
David: These? These are more than headaches. These are steel plates slicing through my every thought.
Julie: I can tell by the way you're walking that you didn't sleep with her.
David: My father wrote about this in his book. Chapter 1... Page 1... Paragraph 1: What is the answer to 99 out of 100 questions?.. Money.
Sofía: I have to get some sleep. Truthfully, I also work as a dental assistant.
David: Boy, am I going to the wrong dentist.
Sofía: I'll tell you in another life, when we are both cats.
Sofía: What about you? What's your nickname?
David: Citizen Dildo.
Sofía: Hmm. You are not staying over.
David: How do you think watertight contracts are broken?
Julie: Don't you know that when you sleep with someone, your body makes a promise whether you do or not.
David: Doc, once you've been driven off a bridge at 80 miles an hour, somehow you don't invite happiness in without a full body search.
David: You weren't invited.
David: Even in my dreams I feel like an idiot who's about to wake up.
Sofía: Every passing minute is another chance to turn it all around.
Thomas Tipp: But I say this with complete love. Claim your life. Learn to be an asshole. Don't.
David: Two's enough.
Thomas Tipp: Forgive me. But I still believe in this family, David, even if it's only you.
Brian: You will never know the exquisite pain of the guy, who goes home alone.
David: And to what do I owe this pleasure?
Sofía: The pleasure of Sofia Serrano.
Thomas Tipp: ...maybe you should let people see you, yeah? I mean, the last time we were together, you were, you were, you were in a coma, and you were very fucking rude to me. You didn't say a word.
David: Say everything now, now, now, now.
Answer: It's from an Icelandic band called "Sigur Ros", and it is not on the soundtrack (although another one of their songs is - one from earlier in the movie). It's from their 2002 album titled "()" - yes two parenthesis, it's on track 4, but is an untitled song. You can get the album on Amazon.com or in any Borders or Barnes and Noble.