The beginning of the conversation of Jack Harkness and Owen Harper:)
Owen Harper: You take these things for granted. It's only when they're slipping away you realise how amazing they are. This could be the last time I see these flecks, or, you know, feel these bricks underneath my hands.Captain Jack Harkness: "Only in suffering do we recognise beauty".
Owen Harper: Yeah, yeah! Who said that?
Captain Jack Harkness: Proust.
Owen Harper: You've read Proust?
Captain Jack Harkness: Yeah. Well, no. We dated for a while, he was really immature.
Owen Harper: You know, none of us know whether to take you seriously when you say those things.
Captain Jack Harkness: When you've lived as long as I have, you don't make any more up.
Dead Man Walking
Owen: You've got forever. I could have seconds. It hardly seems fair.Jack: It isn't. But then, forevers overrated.
Owen: Not from where I'm standing.
Jack: If you've got forever, you don't notice the flecks in the concrete or bother to touch the bricks. You send your friends into danger knowing the stakes aren't the same for you. That you might get them killed while you walk away unscathed.