/summa/SS/SSIII/SS_Q168:
We must next consider modesty as consisting in the outward movements of the body, and under this head there are four points of inquiry:
(1) Whether there can be virtue and vice in the outward movements of the body that are done seriously?
(2) Whether there can be a virtue about playful actions?
(3) Of the sin consisting in excess of play;
(4) Of the sin consisting in lack of play.