72. Pornographic representations are obscene for this reason: you may recognize someone by his or her sexual organ, but not in his or her sexual organ.
All erotic art addresses itself to the depiction of the human face. Since the face is the primary expression of consciousness, it is the natural focus of all individualising attention (e.g., the glance of sexual desire). Representations that focus upon the sexual organs are, therefore, not erotic, but obscene, since they negate the interpersonal quality of (sexual) desire.
73. The caress of sexual desire calls forth the soul from its depths, and makes it palpable in the flesh. The body quivers with soulful reverberations. Arousal in the recipient is a form of permission to the one who caresses.