Well, Lt. Somerset quickly deduces from the few clues, and quits.
William Somerset: I just don't think I can continue to live in a place that embraces and nurtures apathy as if it was virtue.
David Mills: You're no different. You're no better.
William Somerset: I didn't say I was different or better. I'm not. Hell, I sympathize; I sympathize completely. Apathy is the solution. I mean, it's easier to lose yourself in drugs than it is to cope with life. It's easier to steal what you want than it is to earn it. It's easier to beat a child than it is to raise it. Hell, love costs: it takes effort and work.
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John Doe: Realize detective, the only reason that I'm here right now is that I wanted to be.
David Mills: He's a nut-bag! Just because the fucker's got a library card doesn't make him Yoda!
William Somerset: This isn't going to have a happy ending.
David Mills: What's in the box?
John Doe: It didn't work out, so I took a souvenir...
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