Harry : When I buy a new book, I always read the last page first. That way, in case I die before I finish, I know how it ends. That, my friend, is a dark side. Sally : That doesn't mean you're deep or anything. I mean, yes, basically I'm a happy person... Harry : So am I. Sally : ...and I don't see that there's anything wrong with that. Harry : Of course not. You're too busy being happy. Do you ever think about death? Sally : Yes. Harry : Sure you do. A fleeting thought that drifts in and out of the transom of your mind. I spend hours, I spend days... Sally : - and you think this makes you a better person? Harry : Look, when the shit comes down, I'm gonna be prepared and you're not, that's all I'm saying. Sally : And in the meantime, you're gonna ruin your whole life waiting for it.

http://www.moviequotedb.com/movies/when-harry-met-sally.../quote_57925.html