[A brief flash of guilt crosses his face, but it's immediately replaced by a cold expression.] Guess so. [His reply is clipped and he turns away to stiffly move toward the exit.]
[But before he leaves, he pauses at the door, only turning his head to look behind him.] You're right. I'm not perfect, I make mistakes, I think about them all the time.
[Especially when one of those mistakes was right there in the same room, watching him.] Sorry about your jaw. [And then he's pushing the door open and leaving Tony to his paintings.]