>The forces of the soul manifest through the exercising of two faculties, one of which
goes by the name of understanding and the other by will. Since all happiness consists of
perfection, the happiness of a soul can only be produced by the perfection of its understanding
and will. By the same reasoning, a soul should be supposed all the happier for having increased
these two types of perfection. This is also what man’s true happiness consists of in general,
since the benefits of the body have nothing to do with it unless they serve to increase the
perfection of understanding or of the will.
