16 Do not court the company of married ladies or visit the houses of the high-born. Do not look too often on the life which you despised to become a virgin. Women of the world, you know, plume themselves because their husbands are on the bench or in other high positions. And the wife of the emperor always has an eager throng of visitors at her door. Why do you, then, wrong your husband? Why do you, God's bride, hasten to visit the wife of a mere man? Learn in this respect a holy pride; know that you are better than they.
And not only must you avoid intercourse with those who are puffed up by their husbands' honors, who are hedged in with troops of eunuchs, and who wear robes inwrought with threads of gold. You must also shun those who are widows from necessity and not from choice. Not that they ought to have desired the death of their husbands; but that they have not welcomed the opportunity of continence when it has come. As it is, they only change their garb; their old self-seeking remains unchanged.
To see them in their capacious litters, with red cloaks and plump bodies, a row of eunuchs walking in front of them, you would fancy them not to have lost husbands but to be seeking them. Their houses are filled with flatterers and with guests. The very clergy, who ought to inspire them with respect by their teaching and authority, kiss these ladies on the forehead, and putting forth their hands (so that, if you knew no better, you might suppose them in the act of blessing), take wages for their visits.
They, meanwhile, seeing that priests cannot do without them, are lifted up into pride; and as, having had experience of both, they prefer the license of widowhood to the restraints of marriage, they call themselves chaste livers and nuns. After an immoderate supper they retire to rest to dream of the apostles.
Source: Letters (New Advent)