To Florus 4.65
“But he,” you say, “was unwilling to name the desire of the flesh. He is silent because he is ashamed; and with a remarkable shamelessness of shame, if one may say so, he is ashamed to name what he is not ashamed to praise” (Augustine, On Marriage and Concupiscence 2.7.17). So you are displeased that we know, according to the apostle, that our less respectable parts must be covered with the decency they require (1 Corinthians 12:23). In this, our judgment follows the Creator’s: what he placed in a private part of the body, we likewise cover with a modest screen.