78. An act is partly good when, while its object is good, there is some evil in the circumstances that does not neutralize or transform the object. This happens in the following cases: (a) when the object is good and some minor circumstance, not intended as affecting the substance of the act, is evil, as when a person prays with distractions; (b) when the object is good and a partial, but not predominant motive is slightly evil, as when a person prays in public in order to give edification and also incidentally to help his reputation. In both these cases the good—i.e., the worship of God—is desired for itself as good, and the evil that is simultaneously desired does not change this good object.
79. Bad Acts.-An act is called entirely evil when all its elements—its object, circumstances and purpose-are contrary to the moral norms. Thus, to steal, on a large scale, in order to drive the victim to desperation is an act that is entirely wrong. The wickedness of the circumstance and of the motive increases the wickedness of the object of the act.
80. An act is likewise called entirely bad, when one or more of its elements are of themselves good or indifferent, but when there is an element which is evil and which neutralizes or transforms the good. This happens in various ways:
(a) when the object is evil, and the purpose is good, as when one steals in order to pay one’s debts. The good end is wished only as obtainable through a wicked means, and thus ceases to be good;
(b) when the object is good or indifferent, and the total purpose is evil, as when one talks or prays with no other motive than to annoy another person. The good is willed, not as good, but only as a means to evil;
(c) when the object is good or indifferent, and a partial but ulterior purpose is evil. For example, if a person extinguishes a fire in order to save a neighbor’s house and thus be enabled to rob him; if a person takes physical exercises to develop his strength so as to be enabled to bully a neighbor. The good act and the immediate end in these cases are intended not for the sake of their goodness, but as instruments to the accomplishment of the evil ulterior end;
(d) when the object is good or indifferent, and an evil circumstance is intended, not as a circumstance, but as forming a unit with the object and as affecting the substance of the act—for example, when a person intends prayer precisely as distracted, thus converting prayer into a sin. The good object is willed in such cases, not as good, but as vitiated by an evil circumstance.
81. Although an act is totally evil when the good in it is absorbed by the evil, the presence of what is good in itself can diminish, though it cannot take away, the evil. Thus, to lie in order to help a neighbor is totally evil; yet, it is not as great an evil as to lie to hurt that neighbor.
82. Indifferent Acts.—An act is entirely indifferent if all the elements in it—its object, circumstances and purpose—are neither harmonious nor discordant with the standards of morality. Such an act would be walking home rapidly in order to eat a meal, if besides these factors, which bear no relation to good morals, there was nothing else in the act that did bear such a relation.
83. As to the actual existence of a human or voluntary act that is morally indifferent, we conclude: (a) Considered in the abstract and universally, some human acts are morally indifferent; for if acts be considered with reference to their objects alone and apart from the circumstances that accompany them, and as they are classified in the mind, it is clear that many of them have no determinate relations to moral norms—e.g., reading, writing, walking, etc. (one can read either good or bad literature); (b) considered in the concrete, and as they happen in individual cases, no human acts are morally indifferent, since the purpose of the agent is either according to right reason or against it, so that, in spite of the indifferent object, the act becomes either good or bad by reason of the presence or absence of the good purpose.