of them," as
Augustine says (De Doctr. Christ. iii, 12). Therefore the good or
evil of a human action is not derived from their object.

Obj. 2: Further, the object is compared to the action as its matter.
But the goodness of a thing is not from its matter, but rather from
the form, which is an act. Therefore good and evil in actions is not
derived from their object.

Obj. 3: Further, the object of an active power is compared to the
action as effect to cause. But the goodness of a cause does not
depend on its effect; rather is it the reverse. Therefore good or
evil in actions is not derived from their object.

_On the contrary,_ It is written (Osee 9:10): "They became abominable
as those things which they loved." Now man becomes abominable to God
on account of the malice of his action. Therefore the malice of his
action is according to the evil objects that man loves. And the same
applies to the goodness of his action.

_I answer that,_ as stated above (A. 1) the good or evil of an
action, as of other things, depends on its fulness of being or its
lack of that fulness. Now the first thing that belongs to the fulness
of being seems to be that which gives a thing its species. And just
as a natural thing has its species from its form, so an action has
its species from its object, as movement from its term. And therefore
just as the primary goodness of a natural thing is derived from its
form, which gives it its species, so the primary goodness of a moral
action is derived from its suitable object: hence some call such an
action "good in its genus"; for instance, "to make use of what is
one's own." And just as, in natural things, the primary evil is when
a generated thing does not realize its specific form (for instance,
if instead of a man, something else be generated); so the primary
evil in moral actions is that which is from the object, for instance,
"to take what belongs to another." And this action is said to be
"evil in its genus," genus here standing for species, just as we
apply the term "mankind" to the whole human species.

Reply Obj. 1: Although external things are good in themselves,
nevertheless they have not always a due proportion to this or that
action. And so, inasmuch as they are considered as objects of such
actions, they have not the quality of goodness.

Reply Obj. 2: The object is not the matter "of which" (a thing is
made), but the matter "about which" (something is done); and stands
in rela