This isn't that... (6.58)
Wendy: If you burn cash and have down quarters just to hurt Taylor, you're Neil McCauley throwing it all away to kill Waingro in that motel. I can't stand by and let that happen.
Bobby: For a minute there, you're glad that Neil allows himself to feel. But then, yeah, his one moment of humanity kills him. But this isn't that.
This is a nod to Heat, Michael Mann’s 1995 crime movie starring Al Pacino and Robert De Diro, who plays professional thief, Neil McCauley. Read the plot summary in the Wikipedia entry here to find out who Waingro is and why Neil throws it all away by killing him.