" The knights nodded with exaggerated casualness, showing respect for the wizard but not fear. Or so they thought. The fear came in the way they parted for the old man, took a half step back without really thinking about it.
That's one of the things you learn to do when you study acting. You watch the nonverbal cues. That's what gives a performance depth. The knights were all like, "Hey, Merlin, what's up?" But get past the easy words and bluff tone and you saw faces drawn back, bodies turned at an angle to protect the vitals, an unconscious cringe. "

― K.A. Applegate