Holmes: I was attempting to get a rise out of you, to remind you that no matter where you go or how tedious the work you undertake, it will not change what you are, a detective.
Bell: I am a detective.
Holmes: Well, you still carry the title, yeah. But it's more than that, isn't it? It's a calling. It's your calling. You are not an analyst. You are not an assessor of data. You transferred from Major Crimes either because your pride would not allow you to occupy the same space as me or because you're feeling sorry for yourself. In either case, a pathetic excuse.
Bell: I have a tremor in my hand. I can't shoot, can't get out on the street and work cases because of you!
Holmes: Bollocks! You could've stayed in Major Crimes until you completed your rehab!
Bell: You're assuming my rehab can be completed!
Holmes: Because I have faith in you! I have faith in your perseverance! Be my friend, don't be my friend, whatever, but don't be so foolish as to confuse punishing me with punishing yourself!
Bell: You know what I thought the first time I met you? Man, it comes easy for that guy. Well, I'm sorry. It doesn't come that easy to the rest of us.
Holmes: I am a drug addict, Marcus. A drug addict. And it might seem like an abstraction to you because I have been sober since I made your acquaintance. But two years ago, I was as pitiable a soul as you will ever meet. With help, I fought back, and I got a little bit better. I know what I'm supposed to do with my life. Do you?