Izzie: Maybe he just cares about his son but the moron is too emotionally stunted to let him.
Alex: See, this, this right here is your problem. You get all wrapped up and involved and you start caring about these people! Your patient in there? He's the moron. His son's never gonna give him what he wants and he's just gonna be disappointed! And the sooner he gets that the sooner you get it, and ...
Izzie: No, go on please. Be a selfish ass. Because then at least I know what to expect. This whole 'be a nice guy one minute and a total jerk the next' is getting really. Old. Alex. So who's it gonna be? Pick. One.