2512. The eyelids consequently correspond to the lips, and are in like manner fringed with hairs.
2513. As the body has everywhere two halves, and laterally also presents two entire organisms, so also is the formation of the nervous system a double one. Each eye is an entire body.
2514. In the two eyes the halves of the body have completely separated as entire bodies, and each has attained self-substantiality. Each eye is a free animal in the animal body. Each eye is therefore circumscribed by its own integument—is a free animal. It is endowed, like the hand, with omnilateral motion; it has cavities, i. e. its bodily cavities and humours, or inclosed masses—viscera.
2515. An organ, which again repeats in its miniature the whole animal itself, of which it is only a part, must necessarily be the highest point unto which an organism can attain. With the eye the organization, and consequently nature, has been concluded.
2516. The eye is a parasitic animal, of the same kind with the animal upon which it exists.
2517. In a certain sense all sensorial organs are parasitic animals in the animal; only they are not all of the same kind with it. No one of the other senses has e. g. repeated all lower systems in itself, and it is therefore to be regarded only as a subordinate or half-animal, which lives upon that which is more perfect.
Senses of the Sexual Animal.
2518. In essaying to speak concerning the sensorial organs of the sexual animal, we shall only encounter in the latter the emotions of the vegetative senses, and these indeed disposed according to their rank.
2519. The sense of feeling is most perfectly developed in the legs, whereof the pelvis represents the scapula.
2520. The external sexual parts are the analogues of the gustatory sense; the female parts being indeed those of the mouth; the male, which are frequently furnished with bone, of the tongue. The jaws are not repeated in a sexual animal, except in Insects, namely, as the pharyngeal maxillæ.