The one with the claws was thinking loudly and precisely, obviously at Xavier, but Paris heard it as well.
"Of course he's not here to endanger the children," Paris says, wondering without a shred of self-aware irony if these people are insane. At least Xavier seems to understand why his lord is here, but better to let Magneto himself address that. If they want to have tea, fine. Paris doesn't care for the stuff, in a world where you can have ice in drinking water. Speaking of ice, that one's obviously less of a warrior, but Paris is a little more worried about him on the whole.