From a moral perspective, how would a Catholic moral theologian justify modesty?

From the Catechism of Pope St. John Paul the Great: > §2521 Purity requires *modesty*, an integral part of temperance. Modesty protects the intimate center of the person. It means refusing to unveil what should remain hidden. It is ordered to chastity to whose sensitivity it bears witness. It guides how one looks at others and behaves toward them in conformity with the dignity of persons and their solidarity. But according to playwright Alan Bennett, "All modesty is false modesty; otherwise, it wouldn't be called modesty". This paradoxicality can be seen in the self-refuting nature of the sentence "I am humble". How would a Catholic moral theologian justify modesty in light of its paradoxicality?