(b) The confessor, if he perceives that illness is the cause of scruples, should forbid any spiritual practices that cause or aggravate the malady. Example: scrupulous penitents should not be permitted to practise mortification by depriving themselves of necessary sleep, food, exercise or fresh air, or to use devotions or austerities for which they are physically unfit. 635. Persons who are scrupulous and lax at the same time need to be directed so as to overcome both spiritual maladies. (a) If they are more scrupulous than lax, the case is less difficult, as they incline rather to the safer side, and it will suffice to apply the remedies indicated above for laxity and scrupulosity, as they are needed. Example: Titus, on account of scrupulosity, spends too much time at his prayers, and thus neglects the exercise and recreation which are necessary for his health. He should be instructed to limit his devotions, to have a regular time for them each day, and to realize that he has an obligation to take proper care of his health. (b) If persons are more lax than scrupulous, the case is difficult, as they incline more to evil; indeed, if the trouble is Pharisaism, it is well-nigh incurable, on account of the pride and blindness that oppose resistance to every effort to cure. These persons need to be treated with severity, since nothing else will make any impression; they should be told in plain language how they stand and what is in store for them, unless they repent. Examples: Caius is extremely careful not to be guilty of sins of commission, but he thinks nothing of sins of omission; he would not take a postage stamp without express permission of the owner, but he neglects from year to year to pay bills, and sees nothing wrong in this. Titus thinks himself a saint because he worships the letter of the law, when it is to be applied to others; but he cares nothing about its spirit, and, though indulgent to self, is a tyrant with others. Both these men need to be told that, far from being good, they are very bad; that, far from being secure, they are in great danger. If insensible to reproofs, they should be reminded of the woes that await the wilfully blind (Matt., xxiii. 13 sqq.). 636. Practical Conclusions.--An instrument is called good when it produces with sufficient exactness the effects for which it was intended; it is bad, if it fails to produce those effects. Thus, a timepiece, a compass, or a thermometer is good if it indicates accurately, and bad if it indicates inaccurately. But, as it would be harmful to guide oneself by an unreliable instrument (e.g., by a watch with a defective mainspring, or which runs fast or slow), one naturally corrects the defects and regulates the working of the mechanism. Now, from what has been said above in this article, we see that conscience can be a deceptive indicator, and that its accuracy can be improved. Hence, the need of correcting a bad conscience and of cultivating a good conscience.