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

If, however, it does not proceed from deliberate reason, but from some act of the imagination, as when a man strokes his beard, or moves his hand or foot; such an action, properly speaking, is not moral or human; since this depends on the reason. Hence it will be indifferent, as standing apart from the genus of moral actions.

Reply Obj. 1: For an action to be indifferent in its species can be understood in several ways. First in such a way that its species demands that it remain indifferent; and the objection proceeds along this line. But no action can be specifically indifferent thus: since no object of human action is such that it cannot be directed to good or evil, either through its end or through a circumstance. Secondly, specific indifference of an action may be due to the fact that as far as its species is concerned, it is neither good nor bad. Wherefore it can be made good or bad by something else. Thus man, as far as his species is concerned, is neither white nor black; nor is it a condition of his species that he should not be black or white; but blackness or whiteness is superadded to man by other principles than those of his species.

Reply Obj. 2: The Philosopher states that a man is evil, properly speaking, if he be hurtful to others. And accordingly, he says that the prodigal is not evil, because he hurts none save himself. And the same applies to all others who are not hurtful to other men. But we say here that evil, in general, is all that is repugnant to right reason. And in this sense every individual action is either good or bad, as stated above.

Reply Obj. 3: Whenever an end is intended by deliberate reason, it belongs either to the good of some virtue, or to the evil of some vice. Thus, if a man's action is directed to the support or repose of his body, it is also directed to the good of virtue, provided he direct his body itself to the good of virtue. The same clearly applies to other actions. ________________________

TENTH ARTICLE [I-II, Q. 18, Art. 10]

Whether a Circumstance Places a Moral Action in the Species of Good or Evil?

Objection 1: It would seem that a circumstance cannot place a moral action in the species of good or evil. For the species of an action is taken from its object. But circumstances differ from the object. Therefore circumstances do not give an action its species.

Obj. 2: Further, circumstances are as accidents in relation to the moral action, as stated above (Q. 7, A. 1). But an accident does not constitute the species. Therefore a circumstance does not constitute a species of good or evil.

Obj. 3: Further, one thing is not in several species. But one action has several circumstances. Therefore a circumstance does not place a moral action in a species of good or evil.

On the contrary, Place is a circumstance. But place makes a moral action to be in a certain species of evil; for theft of a thing from a holy place is a sacrilege. Therefore a circumstance makes a moral action to be specifically good or bad.

I answer that, Just as the species of natural things are constituted by their natural forms, so the species of moral actions are constituted by forms as conceived by the reason, as is evident from what was said above (A. 5). But since nature is determinate to one thing, nor can a process of nature go on to infinity, there must needs be some ultimate form, giving a specific difference, after which no further specific difference is possible. Hence it is that in natural things, that which is accidental to a thing, cannot be taken as a difference constituting the species. But the process of reason is not fixed to one particular term, for at any point it can still proceed further. And consequently that which, in one action, is taken as a circumstance added to the object that specifies the action, can again be taken by the directing reason, as the principal condition of the object that determines the action's species. Thus to appropriate another's property is specified by reason of the property being "another's," and in this respect it is placed in the species of theft; and if we consider that action also in its bearing on place or time, then this will be an additional circumstance. But since the reason can direct as to place, time, and the like, it may happen that the condition as to place, in relation to the object, is considered as being in disaccord with reason: for instance, reason forbids damage to be done to a holy place. Consequently to steal from a holy place has an additional repugnance to the order of reason. And thus place, which was first of all considered as a circumstance, is considered here as the principal condition of the object, and as itself repugnant to reason. And in this way, whenever a circumstance has a special relation to reason, either for or against, it must needs specify the moral action whether good or bad.

Reply Obj. 1: A circumstance, in so far as it specifies an action, is considered as a condition of the object, as stated above, and as being, as it were, a specific difference thereof.

Reply Obj. 2: A circumstance, so long as it is but a circumstance, does not specify an action, since thus it is a mere accident: but when it becomes a principal condition of the object, then it does specify the action.

Reply Obj. 3: It is not every circumstance that places the moral action in the species of good or evil; since not every circumstance implies accord or disaccord with reason. Consequently, although one action may have many circumstances, it does not follow that it is in many species. Nevertheless there is no reason why one action should not be in several, even disparate, moral species, as said above (A. 7, ad 1; Q. 1, A. 3, ad 3). ________________________

ELEVENTH ARTICLE [I-II, Q. 18, Art. 11]

Whether Every Circumstance That Makes an Action Better or Worse,

Places a Moral Action in a Species of Good or Evil?

Objection 1: It would seem that every circumstance relating to good or evil, specifies an action. For good and evil are specific differences of moral actions. Therefore that which causes a difference in the goodness or malice of a moral action, causes a specific difference, which is the same as to make it differ in species. Now that which makes an action better or worse, makes it differ in goodness and malice. Therefore it causes it to differ in species. Therefore every circumstance that makes an action better or worse, constitutes a species.

Obj. 2: Further, an additional circumstance either has in itself the character of goodness or malice, or it has not. If not, it cannot make the action better or worse; because what is not good, cannot make a greater good; and what is not evil, cannot make a greater evil. But if it has in itself the character of good or evil, for this very reason it has a certain species of good or evil. Therefore every circumstance that makes an action better or worse, constitutes a new species of good or evil.

Obj. 3: Further, according to Dionysius (Div. Nom. iv), "evil is caused by each single defect." Now every circumstance that increases malice, has a special defect. Therefore every such circumstance adds a new species of sin. And for the same reason, every circumstance that increases goodness, seems to add a new species of goodness: just as every unity added to a number makes a new species of number; since the good consists in "number, weight, and measure" (I, Q. 5, A. 5).

On the contrary, More and less do not change a species. But more and less is a circumstance of additional goodness or malice. Therefore not every circumstance that makes a moral action better or worse, places it in a species of good or evil.

I answer that, As stated above (A. 10), a circumstance gives the species of good or evil to a moral action, in so far as it regards a special order of reason. Now it happens sometimes that a circumstance does not regard a special order of reason in respect of good or evil, except on the supposition of another previous circumstance, from which the moral action takes its species of good or evil. Thus to take something in a large or small quantity, does not regard the order of reason in respect of good or evil, except a certain other condition be presupposed, from which the action takes its malice or goodness; for instance, if what is taken belongs to another, which makes the action to be discordant with reason. Wherefore to take what belongs to another in a large or small quantity, does not change the species of the sin. Nevertheless it can aggravate or diminish the sin. The same applies to other evil or good actions. Consequently not every circumstance that makes a moral action better or worse, changes its species.