Thank you for returning it to me, %PCName.

I can't force you to turn it over, of course, but I spent so much time on the work in that book. Please reconsider.

A great deal of work went into these formulas; I cannot thank you enough for returning them to me. You're certainly welcome back here anytime. I'd be happy to offer you a small discount on anything I have here. It's the least I can do.

You found what? Where? Goodness! I simply thought I'd misplaced the book somewhere. May I have it back?

She didn't tell me where she got it, so I don't know. Don't want to know, either. It's not like it matters. You can't read a thing in it anyway, except for somebody's name.