23 I do not deny that holy women are found both among widows and those who have husbands; but they are such as have ceased to be wives, or such as, even in the close bond of marriage, imitate virgin chastity. The Apostle, Christ speaking in him, briefly bore witness to this when he said, “She that is unmarried is careful for the things of the Lord, how she may please the Lord: but she that is married is careful for the things of the world, how she may please her husband.”
He leaves us the free exercise of our reason in the matter. He lays no necessity upon anyone nor leads anyone into a snare: he only persuades to that which is proper when he wishes all men to be as himself. He had not, it is true, a commandment from the Lord respecting virginity, for that grace surpasses the unassisted power of man, and it would have worn an air of immodesty to force men to fly in the face of nature, and to say in other words, I want you to be what the angels are.
It is this angelic purity which secures to virginity its highest reward, and the Apostle might have seemed to despise a course of life which involves no guilt. Nevertheless in the immediate context he adds, “But I give my judgment, as one that has obtained mercy of the Lord to be faithful. I think therefore that this is good by reason of the present distress, namely, that it is good for a man to be as he is.” What is meant by present distress? “Woe unto them that are with child and to them that give suck in those days!”
The reason why the wood grows up is that it may be cut down. The field is sown that it may be reaped. The world is already full, and the population is too large for the soil. Every day we are being cut down by war, snatched away by disease, swallowed up by shipwreck, although we go to law with one another about the fences of our property. It is only one addition to the general rule which is made by those who follow the Lamb, and who have not defiled their garments, for they have continued in their virgin state.
Notice the meaning of defiling. I shall not venture to explain it, for fear Helvidius may be abusive. I agree with you, when you say, that some virgins are nothing but tavern women; I say still more, that even adulteresses may be found among them, and, you will no doubt be still more surprised to hear, that some of the clergy are inn-keepers and some monks unchaste. Who does not at once understand that a tavern woman cannot be a virgin, nor an adulterer a monk, nor a clergy-man a tavern-keeper? Are we to blame virginity if its counterfeit is at fault? For my part, to pass over other persons and come to the virgin, I maintain that she who is engaged in huckstering, though for anything I know she may be a virgin in body, is no longer one in spirit.
Source: The Perpetual Virginity of Blessed Mary (New Advent)