618. The external causes of scrupulosity are: (a) the devil, who excites vain fears in order to diminish devotion, to discourage the use of prayer and of the Sacraments, to drive to tepidity and despair; (b) the neighbor, who teaches scrupulosity by his words or example; association with persons who are scrupulous; the reading of spiritual books of a rigoristic character; assistance by persons of a timid character at terrifying sermons on the divine justice; overly protective and overly rigorous education. 619. Though God cannot be the cause of scrupulosity in the same way as the evil spirits (who use it for man’s destruction), nor in the same way as human agencies (which are unable to bring good out of the evil they cause), He does in exceptional cases directly permit even saintly persons to be vexed by scrupulosity that they may thereby satisfy for sin, or exercise themselves in humility and patience, or shake off spiritual torpor. Scrupulosity that is supernatural in origin is much rarer than that which has a natural source, and it can be usually recognized by certain signs, like the following; (a) when it cannot be accounted for by natural causes, and is generally short in duration; (b) if it is from the evil spirits, it leaves the soul shaken or dismayed, if from God, it is followed by light and peace. 620. Dangers of scrupulosity.--The evil results of indulged scrupulosity are as follows: (a) temporal evils--the constant fears and worries of the scrupulous affect the brain and nerves, break down the bodily vigor, and lead to neurasthenia, hysteria, insanity or monomania; (b) spiritual evils--time is wasted in useless regrets and anxieties, prayer becomes a torture, confidence in God decreases, and, seeing they do not find consolation in virtue, the scrupulous often end in vice and despair. 621. Rules to be observed by the scrupulous.--(a) They must not yield to their scruples. As was said above, scrupulosity is not a conscience, but only the counterfeit appearance of a conscience; not a help to the soul, but a grave drawback and danger. Hence, the scrupulous must learn to despise their foolish fears and imaginations. (b) They must follow blindly the commands of a prudent spiritual director. To attempt to make decisions for themselves is a harrowing experience for scrupulous persons, and one fraught with great peril. They must protect themselves, therefore, by following the decisions made for them by one who will guide them aright. Gradually, as their condition improves, however, they must learn to take the initiative and thus prepare themselves to act as responsible persons capable of forming a correct judgment.