is called Natural-Corporeal life. This kind of life is common also to the lowest structure of the brain and nerves.
In this part, the Natural-Corporeal, are set the organs of the senses of the body, the organs of seeing, hearing, smelling, tasting, and feeling. The senses are functions of an organism higher than that of the flesh and the bones, having life also of a superior order. The senses of the body constitute the Natural-Sensual. The distinction between the Natural-Corporeal and the Natural-Sensual is clearly defined, the life of the Natural-Corporeal being insensate, while that of the Natural-Sensual is sensate. For illustration, the ear is as to its bones, flesh, and blood of the Natural-Corporeal degree, but as to that inner and higher material and form, or plane of it that gifts it with the sense of hearing in nature, it is of the Natural-Sensual degree. The same may be said of the eye with regard to seeing, of the hand with respect to feeling, or of any sensorial part of the body with reference to its form of sensation. The Natural-Corporeal constitutes a vestment to the Natural-Sensual and an instrument of its outward action.
The purest substance in the brain and nerves, since it is the highest form of matter in the natural body, and lies next below the spiritual part of
