/summa/SS/SSIII/SS_Q156:
We must now consider incontinence: and under this head there are four points of inquiry:
(1) Whether incontinence pertains to the soul or to the body?
(2) Whether incontinence is a sin?
(3) The comparison between incontinence and intemperance;
(4) Which is the worse, incontinence in anger, or incontinence in desire?