The word temperance can be employed to signify either the moderation that reason imposes on every human act of passion, in which case it is not a special virtue but a general condition that should characterize all the moral virtues, or a special virtue among the moral virtues. As a moral virtue, temperance is a supernatural habit that moderates the inclination to sense pleasures and keeps them within the limits of reason illumined by faith.
We refer to temperance as a supernatural habit in order to distinguish it from the natural or acquired virtue of temperance. The proper function of temperance is to refrain or control the movements of the concupiscible appetite in which it resides, as distinct from the virtue of fortitude, which controls the irascible appetite. Although temperance should moderate all the sense pleasures to which the concupiscible appetite is drawn, it refers in a special way to the pleasures of taste and touch, because they provide the most intense sense delectation and are, therefore, most likely to draw the appetite beyond the rule of reason. That is why the special virtue of temperance is reguired.
Natural or acguired temperance is regulated simply by the light of natural reason, and therefore contains or restricts the functions of the pleasure emotions within rational or purely human limits; supernatural or infused temperance extends much further because it adds to simple reason the light of faith, which imposes superior and more delicate demands. The virtue of temperance is one of the most necessary virtues in the spiritual life of the individual.
There are two integral parts assigned to the virtue of temperance: a sense of shame and a sense of honor. The sense of shame is not a virtue in the strict sense of the word, but a praiseworthy emotion or feeling that causes us to fear the disgrace and confusion or embarrassment connected with a base action. It is an emotion because it is usually accompanied by a change in the body, such as blushing; it is praiseworthy because the fear, regulated by reason, arouses an aversion to anything that is base and degrading. It should be noted that we are more ashamed of being embarrassed before wise and virtuous persons — by reason of the rectitude of their judgment and the worth of their esteem — than before those who have little education or virtue. Above all, we have a feeling of shame and a fear of embarrassment before our friends and the members of our own family, who know us better and with whom we have to live; with strangers the sense of shame is much weaker.
The sense of honor signifies a certain love or appreciation for the spiritual beauty and dignity connected with the practice of temperance. It is properly connected with the virtue of temperance because this virtue possesses a certain degree of spiritual beauty, and the beautiful is opposed to the base and ugly. Therefore a sense of honor pertains to the virtue that helps us to avoid base and ugly actions. The importance of cultivating a sense of honor can hardly be overemphasized, since sense pleasures readily lead to excess. –Father Jordan Aumann ‘Spiritual Theology’