Thomas Aquinas - Summa Theologica, Part I-II (Pars Prima Secundae)

Whether the Whole Goodness and Malice of the External Action Depends on the Goodness of the Will?

Objection 1: It would seem that the whole goodness and malice of the external action depend on the goodness of the will. For it is written (Matt. 7:18): "A good tree cannot bring forth evil fruit, neither can an evil tree bring forth good fruit." But, according to the gloss, the tree signifies the will, and fruit signifies works. Therefore, it is impossible for the interior act of the will to be good, and the external action evil, or vice versa.

Obj. 2: Further, Augustine says (Retract. i, 9) that there is no sin without the will. If therefore there is no sin in the will, there will be none in the external action. And so the whole goodness or malice of the external action depends on the will.

Obj. 3: Further, the good and evil of which we are speaking now are differences of the moral act. Now differences make an essential division in a genus, according to the Philosopher (Metaph. vii, 12). Since therefore an act is moral from being voluntary, it seems that goodness and malice in an act are derived from the will alone.

On the contrary, Augustine says (Contra Mendac. vii), that "there are some actions which neither a good end nor a good will can make good."

I answer that, As stated above (A. 1), we may consider a twofold goodness or malice in the external action: one in respect of due matter and circumstances; the other in respect of the order to the end. And that which is in respect of the order to the end, depends entirely on the will: while that which is in respect of due matter or circumstances, depends on the reason: and on this goodness depends the goodness of the will, in so far as the will tends towards it.

Now it must be observed, as was noted above (Q. 19, A. 6, ad 1), that for a thing to be evil, one single defect suffices, whereas, for it to be good simply, it is not enough for it to be good in one point only, it must be good in every respect. If therefore the will be good, both from its proper object and from its end, if follows that the external action is good. But if the will be good from its intention of the end, this is not enough to make the external action good: and if the will be evil either by reason of its intention of the end, or by reason of the act willed, it follows that the external action is evil.

Reply Obj. 1: If the good tree be taken to signify the good will, it must be in so far as the will derives goodness from the act willed and from the end intended.

Reply Obj. 2: A man sins by his will, not only when he wills an evil end; but also when he wills an evil act.

Reply Obj. 3: Voluntariness applies not only to the interior act of the will, but also to external actions, inasmuch as they proceed from the will and the reason. Consequently the difference of good and evil is applicable to both the interior and external act. ________________________

THIRD ARTICLE [I-II, Q. 20, Art. 3]

Whether the Goodness and Malice of the External Action Are the Same

As Those of the Interior Act?

Objection 1: It would seem that the goodness and malice of the interior act of the will are not the same as those of the external action. For the principle of the interior act is the interior apprehensive or appetitive power of the soul; whereas the principle of the external action is the power that accomplishes the movement. Now where the principles of action are different, the actions themselves are different. Moreover, it is the action which is the subject of goodness or malice: and the same accident cannot be in different subjects. Therefore the goodness of the interior act cannot be the same as that of the external action.

Obj. 2: Further, "A virtue makes that, which has it, good, and renders its action good also" (Ethic. ii, 6). But the intellective virtue in the commanding power is distinct from the moral virtue in the power commanded, as is declared in Ethic. i, 13. Therefore the goodness of the interior act, which belongs to the commanding power, is distinct from the goodness of the external action, which belongs to the power commanded.

Obj. 3: Further, the same thing cannot be cause and effect; since nothing is its own cause. But the goodness of the interior act is the cause of the goodness of the external action, or vice versa, as stated above (AA. 1, 2). Therefore it is not the same goodness in each.

On the contrary, It was shown above (Q. 18, A. 6) that the act of the will is the form, as it were, of the external action. Now that which results from the material and formal element is one thing. Therefore there is but one goodness of the internal and external act.

I answer that, As stated above (Q. 17, A. 4), the interior act of the will, and the external action, considered morally, are one act. Now it happens sometimes that one and the same individual act has several aspects of goodness or malice, and sometimes that it has but one. Hence we must say that sometimes the goodness or malice of the interior act is the same as that of the external action, and sometimes not. For as we have already said (AA. 1, 2), these two goodnesses or malices, of the internal and external acts, are ordained to one another. Now it may happen, in things that are subordinate to something else, that a thing is good merely from being subordinate; thus a bitter draught is good merely because it procures health. Wherefore there are not two goodnesses, one the goodness of health, and the other the goodness of the draught; but one and the same. On the other hand it happens sometimes that that which is subordinate to something else, has some aspect of goodness in itself, besides the fact of its being subordinate to some other good: thus a palatable medicine can be considered in the light of a pleasurable good, besides being conducive to health.

We must therefore say that when the external action derives goodness or malice from its relation to the end only, then there is but one and the same goodness of the act of the will which of itself regards the end, and of the external action, which regards the end through the medium of the act of the will. But when the external action has goodness or malice of itself, i.e. in regard to its matter and circumstances, then the goodness of the external action is distinct from the goodness of the will in regarding the end; yet so that the goodness of the end passes into the external action, and the goodness of the matter and circumstances passes into the act of the will, as stated above (AA. 1, 2).

Reply Obj. 1: This argument proves that the internal and external actions are different in the physical order: yet distinct as they are in that respect, they combine to form one thing in the moral order, as stated above (Q. 17, A. 4).

Reply Obj. 2: As stated in Ethic. vi, 12, a moral virtue is ordained to the act of that virtue, which act is the end, as it were, of that virtue; whereas prudence, which is in the reason, is ordained to things directed to the end. For this reason various virtues are necessary. But right reason in regard to the very end of a virtue has no other goodness than the goodness of that virtue, in so far as the goodness of the reason is participated in each virtue.

Reply Obj. 3: When a thing is derived by one thing from another, as from a univocal efficient cause, then it is not the same in both: thus when a hot thing heats, the heat of the heater is distinct from the heat of the thing heated, although it be the same specifically. But when a thing is derived from one thing from another, according to analogy or proportion, then it is one and the same in both: thus the healthiness which is in medicine or urine is derived from the healthiness of the animal's body; nor is health as applied to urine and medicine, distinct from health as applied to the body of an animal, of which health medicine is the cause, and urine the sign. It is in this way that the goodness of the external action is derived from the goodness of the will, and vice versa; viz. according to the order of one to the other. ________________________