For neither are knee and leg, and such other members, nor are the names applied to them, and the activity put forth by them, obscene. And even the pudenda are to be regarded as objects suggestive of modesty, not shame. It is their unlawful activity that is shameful, and deserving ignominy, and reproach, and punishment. For the only thing that is in reality shameful is wickedness, and what is done through it.
St. Clement of Alexandria, Paedogogus Book II Chapter VI