"Somehow I doubt my mental state has very much to do with it at all." Alucard has been raised on a diet of science-based magics. Everything can be explained with math or physics of some kind, right? He's polite but firm about this and perhaps just a little patronizing. He doesn't expect anyone to understand this, and totally thinks he's in the right.

"If it's safe to cross, there's no need for you to fetch them for me." He appreciates the gesture, but he doesn't see the point in it. They're just boots, and this stranger has risked enough to get him across already. If anything, he's starting to appear to be too nice...