[He lets the "correction" remark slide. It's not really that important, after all. But he does quirk an eyebrow at what he can feel coming off the guy.]

I say something wrong?

[Why does it feel like he's had that conversation before? Several dozen other times before. Like he's had to clarify himself before. He keeps his own irritation shielded. Like he's learned. It's best that way. Keeps up the "control" front.]

If they notice the most valuable books are gone, then there's going to be issues. That's all I'm saying. [But, moving on:] Did you need help sorting things out?