In those words, Athos is reminded of Aramis and Porthos, and understands a bit better what drew Allison to his friends. They have so long fought to keep him from disappearing into his own thoughts, it must be like breathing to them, and no matter how much Athos grumbles, he knows he would not be alive now if they had not been so vigilant. Grudgingly, he must credit the girl for doing the same thing for Tris.

“I know the sort,” he confesses ruefully, and with a tiny smile, he gaze settles on Aramis and Porthos across the room.