"Of course I understand sarcasm," she spat. "It's not like it's theoretical physics, is it?" -- pg. 373
"Head shots are unreliable. You'd be surprised how often the bullet just deflects off your skull." (pg. 245) Good to know! Also, this is the only sentence I laughed with.
"Look at the electrical insulation on these. It's cloth. This stuff's been obsolete for decades. The only thing it had going for it is that it wouldn't be affected by the bacteria." (pg. 254) I wonder why the bad guy didn't use knob and tube wiring?
the Omelas requirement (pg. 182) -- Refers to a story by Ursula K. LeGuin about scapegoats. Read the Wiki article!