On the different functions of modesty. How it should qualify both speech and silence, accompany chastity, commend our prayers to God, govern our bodily motions; on which last point reference is made to two clerics in language by no means unsuited to its object. Further he proceeds to say that one's gait should be in accordance with that same virtue, and how careful one must be that nothing immodest come forth from one's mouth, or be noticed in one's body. All these points are illustrated with very appropriate examples.
67. Lovely, then, is the virtue of modesty, and sweet is its grace! It is seen not only in actions, but even in our words, so that we may not go beyond due measure in speech, and that our words may not have an unbecoming sound. The mirror of our mind often enough reflects its image in our words. Sobriety weighs out the sound even of our voice, for fear that too loud a voice should offend the ear of any one. Nay, in singing itself the first rule is modesty, and the same is true in every kind of speech, too, so that a man may gradually learn to praise God, or to sing songs, or even to speak, in that the principles of modesty grace his advance.
68. Silence, again, wherein all the other virtues rest, is the chief act of modesty. Only, if it is supposed to be a sign of a childish or proud spirit, it is accounted a reproach; if a sign of modesty, it is reckoned for praise. Susanna was silent in danger, and thought the loss of modesty was worse than loss of life. She did not consider that her safety should be guarded at the risk of her chastity. To God alone she spoke, to Whom she could speak out in true modesty. She avoided looking on the face of men. For there is also modesty in the glance of the eye, which makes a woman unwilling to look upon men, or to be seen by them.
69. Let no one suppose that this praise belongs to chastity alone. For modesty is the companion of purity, in company with which chastity itself is safer. Shame, again, is good as a companion and guide of chastity, inasmuch as it does not suffer purity to be defiled in approaching even the outskirts of danger. This it is that, at the very outset of her recognition, commends the Mother of the Lord to those who read the Scriptures, and, as a credible witness, declares her worthy to be chosen to such an office. For when in her chamber, alone, she is saluted by the angel, she is silent, and is disturbed at his entrance, and the Virgin's face is troubled at the strange appearance of a man's form. And so, though she was humble, yet it was not because of this, but on account of her modesty, that she did not return his salutation, nor give him any answer, except to ask, when she had learned that she should conceive the Lord, how this should be. She certainly did not speak merely for the sake of making a reply.
70. In our very prayers, too, modesty is most pleasing, and gains us much grace from our God. Was it not this that exalted the publican, and commended him, when he dared not raise even his eyes to heaven? So he was justified by the judgment of the Lord rather than the Pharisee, whom overweening pride made so hideous. “Therefore let us pray in the incorruptibility of a meek and quiet spirit, which is in the sight of God of great price,” as St. Peter says. A noble thing, then, is modesty, which, though giving up its rights, seizing on nothing for itself, laying claim to nothing, and in some ways somewhat retiring within the sphere of its own powers, yet is rich in the sight of God, in Whose sight no man is rich. Rich is modesty, for it is the portion of God. Paul also bids that prayer be offered up with modesty and sobriety. He desires that this should be first, and, as it were, lead the way of prayers to come, so that the sinner's prayer may not be boastful, but veiled, as it were, with the blush of shame, may merit a far greater degree of grace, in giving way to modesty at the remembrance of its fault.
71. Modesty must further be guarded in our very movements and gestures and gait. For the condition of the mind is often seen in the attitude of the body. For this reason the hidden man of our heart (our inner self) is considered to be either frivolous, boastful, or boisterous, or, on the other hand, steady, firm, pure, and dependable. Thus the movement of the body is a sort of voice of the soul.
72. You remember, my children, that a friend of ours who seemed to recommend himself by his assiduity in his duties, yet was not admitted by me into the number of the clergy, because his gestures were too unseemly. Also that I bade one, whom I found already among the clergy, never to go in front of me, because he actually pained me by the seeming arrogance of his gait. That is what I said when he returned to his duty after an offense committed. This alone I would not allow, nor did my mind deceive me. For both have left the Church. What their gait betrayed them to be, such were they proved to be by the faithlessness of their hearts. The one forsook his faith at the time of the Arian troubles; the other, through love of money, denied that he belonged to us, so that he might not have to undergo sentence at the hands of the Church. In their gait was discernible the semblance of fickleness, the appearance, as it were, of wandering buffoons.
73. Some there are who in walking perceptibly copy the gestures of actors, and act as though they were bearers in the processions, and had the motions of nodding statues, to such an extent that they seem to keep a sort of time, as often as they change their step.
74. Nor do I think it becoming to walk hurriedly, except when a case of some danger demands it, or a real necessity. For we often see those who hurry come up panting, and with features distorted. But if there is no reason for the need of such hurry, it gives cause for just offense. I am not, however, talking of those who have to hurry now and then for some particular reason, but of those to whom, by the yoke of constant habit, it has become a second nature. In the case of the former I cannot approve of their slow solemn movements, which remind one of the forms of phantoms. Nor do I care for the others with their headlong speed, for they put one in mind of the ruin of outcasts.
75. A suitable gait is that wherein there is an appearance of authority and weight and dignity, and which has a calm collected bearing. But it must be of such a character that all effort and conceit may be wanting, and that it be simple and plain. Nothing counterfeit is pleasing. Let nature train our movements. If indeed there is any fault in our nature, let us mend it with diligence. And, that artifice may be wanting, let not amendment be wanting.
76. But if we pay so much attention to things like these, how much more careful ought we to be to let nothing shameful proceed out of our mouth, for that defiles a man terribly. It is not food that defiles, but unjust disparagement of others and foul words. These things are openly shameful. In our office indeed must no word be let fall at all unseemly, nor one that may give offense to modesty. But not only ought we to say nothing unbecoming to ourselves, but we ought not even to lend our ears to words of this sort. Thus Joseph fled and left his garment, that he might hear nothing inconsistent with his modesty. For he who delights to listen, urges the other on to speak.
Source: On the Duties of the Clergy (New Advent)