"Certainly. Very sensible." See, Zagreus is capable of interacting with people without resorting to violence, trickery, or mental invasion, and having the outcome be favourable to everyone involved. Magic! As long as that person is amoral and hasn't any expectations for him to live up to.

"You know, you're a lot more sane than I would have expected, all things considered." This is his version of commenting on the wallpaper, and it shows in his idle tone.