In fact, Plutarch quotes him as saying the following: " When they break a jest upon me in the theatre, I feel as if I were at a big party of good friends."
The master did not laugh, because he never laughs; but he was in a good humor, so that that perpendicular wrinkle hardly ever appeared on his brow; and he explained a problem on the blackboard, and jested.
I hope that you will not find that he is now bigheaded, as well as pigheaded. He knows I speak only in jest. I did nevertheless tell you that he had been an artist at one time, did I not?
" Nope, not jesting, " said Harry, his eyes flicking from Death Eater to Death Eater, looking for a weak link, a space through which they could escape. " How come Voldemort wants it? "