of an efficient
cause.

_On the contrary,_ The Philosopher says (Phys. ii) that "that is to be
considered as the end and the good of other things, for the sake of
which something is." Therefore goodness has the aspect of a final
cause.

_I answer that,_ Since goodness is that which all things desire, and
since this has the aspect of an end, it is clear that goodness implies
the aspect of an end. Nevertheless, the idea of goodness presupposes
the idea of an efficient cause, and also of a formal cause. For we see
that what is first in causing, is last in the thing caused. Fire, e.g.
heats first of all before it reproduces the form of fire; though the
heat in the fire follows from its substantial form. Now in causing,
goodness and the end come first, both of which move the agent to act;
secondly, the action of the agent moving to the form; thirdly, comes
the form. Hence in that which is caused the converse ought to take
place, so that there should be first, the form whereby it is a being;
secondly, we consider in it its effective power, whereby it is perfect
in being, for a thing is perfect when it can reproduce its like, as
the Philosopher says (Meteor. iv); thirdly, there follows the
formality of goodness which is the basic principle of its perfection.

Reply Obj. 1: Beauty and goodness in a thing are identical
fundamentally; for they are based upon the same thing, namely, the
form; and consequently goodness is praised as beauty. But they differ
logically, for goodness properly relates to the appetite (goodness
being what all things desire); and therefore it has the aspect of an
end (the appetite being a kind of movement towards a thing). On the
other hand, beauty relates to the cognitive faculty; for beautiful
things are those which please when seen. Hence beauty consists in due
proportion; for the senses delight in things duly proportioned, as in
what is after their own kind--because even sense is a sort of reason,
just as is every cognitive faculty. Now since knowledge is by
assimilation, and similarity relates to form, beauty properly belongs
to the nature of a formal cause.

Reply Obj. 2: Goodness is described as self-diffusive in the
sense that an end is said to move.

Reply Obj. 3: He who has a will is said to be good, so far as
he has a good will; because it is by our will that we employ whatever
powers we may have. Hence a man is said to be good, not by his good
understanding; but by his good will. Now t