[It's hard to see anyone's expression in this place, but Neuvillette learned to judge emotions by face last, in his study of humans. The attempt at a smile is clear enough in Mario's voice.

Still, he responds to the joking comment mostly seriously.]

I'm afraid not. Though it would be difficult to see much of anything written on the walls, give the degree of mildew and mold covering them.

[Hard to see much of anything on the walls when they're covered in grime.]