Lucas: Samantha fixated on me after her sister died. It ruined her life. I really hope that you don't make the same mistake.
Captain Gregson: You're a good detective Jerry. For a second, I thought maybe you were going to be a great one. But instead of grinding, you sit on that stool, and you bitch, and you moan...
Detective Coventry: You can think this is personal all you want, but half the precinct thinks you've got to be crazier than this Holmes guy to put up with it.
Lucas: You know I was actually very sorry to hear about Samantha, despite our differences. I think her death was tragic, but maybe it's a blessing in disguise. She did have a certain understanding of what her sister may have gone through in those weeks before her death. What if the truth was... was much much worse.
(Sherlock punches him)
(Pulls Joan's wallet from a pocket)
Sherlock: You're wallet, lifted from your purse on the way home, even as you stared daggers at me from three feet away. It's a mere reminder that however skilled you know me to be at deducing how crimes are committed I am every bit as adept at committing them myself.
(Standing in the doorway to his office, addressing the precinct)
Captain Gregson: Everybody! Listen up! It has come to my attention that there's some of you aren't thrilled with the way some things are done around here... Think I've given our consultants a little too much sway... Some friends of mine wanted to let me know before it was too late to right the ship, and I appreciate that. We've got a mission here. It's to protect this city, and the citizens that live in it. You are all part of that effort every day. Most of you do yourselves, and this department proud. And for that, i want to thank you. But if anybody has a problem with how I utilize all the tools at my disposal, be it Holmes and Watson, or the coffee machine, there's the door. Back to work.
(Talking to Joan about his treatment of the detectives)
Sherlock: ... No. I am not a nice man. It's important that you understand that. It's going to save you a great deal of time and effort. There is not a warmer kinder me, waiting to be coaxed out into the light. I am acerbic, I can be cruel. That's who I am, right to the bottom. I am neither proud of this nor ashamed of it. It simply is. In my work, my nature has been an advantage far more than it has a hindrance. I'm not going to change.