(c) A third reason for rash views unfavorable to others is long experience in dealing with human nature. Thus, old men sometimes become not merely cautious, which is reasonable, but unduly suspicious. Similarly, those who have encountered many trials or disappointments in life often become cynical and misanthropic, and to them the actions of all their fellowmen appear either evil or at least spoiled by an evil purpose.
1743. Rash Doubts.—Doubt about the probity of others is sinful, when there are no sufficient reason for it; for example, it would be unreasonable to suspend judgment about a man of excellent reputation because a well-known calumniator had spoken against him. But a doubt may be reasonable, as when a person has had a good reputation for honesty but a reliable witness declares that he is dishonest. In such a case should one decide for the innocence or for the guilt of the party called into doubt, or should one suspend judgment on the matter?
(a) It is not lawful to interpret reasonable doubts in a sense unfavorable to another person, for this would amount to rash judgment, since the reasons are sufficient for doubt but not for decision. Hence, it would be wrong to believe that a person of good repute was a thief, because another person of good repute said so.
(b) It is lawful to suspend judgment in case of reasonable doubts, if there is no obligation of deciding one way or the other, for in so doing one does no injury either to one’s own intelligence (since the doubt is reasonable) or to the honor of another person (since, as supposed, there is no obligation of judging positively in his favor). Just as there is no duty of making acts of love of our neighbor on every occasion, neither is there a duty of deciding doubts to his advantage on every occasion, or of having any opinion about him whatever. Some authors do not admit this, but the common teaching is against them.
(c) It is not lawful to suspend judgment, but the reasonable doubt must be resolved in a favorable sense, if there is an obligation or a wish to decide one way or the other; otherwise one would decide in an unfavorable sense and be guilty of rash judgment. This is what is meant by the well-known maxim that doubts about the character of a neighbor should be settled in favor of the neighbor. Hence, if one were in serious danger of forming a rash judgment and could not otherwise overcome the temptation, a suspension of judgment should give place to favorable judgment. It is true that one may be frequently in error by thus judging well of mankind, since man is inclined to evil from his youth (Gen., viii. 21) and the number of fools is infinite (Eccles., i. 15). But it is a less evil to fall into the speculative error of taking a bad man for good than by adopting another course to fall into the practical error of becoming bad oneself by violating a law of prudence, justice and charity; and it is less harmful that many sinners should receive more credit than they deserve, than that one just man should be deprived of the good opinion that belongs to him. Pseudo-Ambrose (Apol. ii, David, c. 2, n. 5) says that those who judge others rashly often become worse by this act than the persons they judge; and St. Thomas remarks that favorable opinions of others harm no one, whereas unfavorable opinions are a wrong to innocent persons.
1744. The interpretation of doubts in a favorable sense does not mean that one may not take into consideration the possibility of danger or deception and use remedies or precautions. This course is not rash judgment, for even when one judges that another person is good, one knows that the judgment is possibly wrong, and therefore cannot be entirely relied on for external guidance.
(a) It is lawful, therefore, to act as if one did have a bad opinion of another when there is a possibility of harm that must be guarded against. Thus, a father may forbid his children to keep company with other children, for these latter may be corrupt; an employer may keep his money under lock and key, because servants may be dishonest; a traveller may carry weapons, because the inhabitants among whom he travels may be treacherous. Even though appearances are favorable, one may be on one’s guard, for appearances are often deceptive.
(b) It is not lawful, however, to protect oneself or others in such a needlessly conspicuous or offensive manner as to sadden or defame the other party against whom one takes the precautions. Thus, it would be unjust and uncharitable to go about ostentatiously locking safes and drawers whenever a certain person appeared, for this would be equivalent to saying that he was a thief.
Art. 3: THE SUBJECTIVE PARTS OF JUSTICE: COMMUTATIVE AND DISTRIBUTIVE JUSTICE
(_Summa Theologica_, II-II, qq. 61, 62.)