SOUL AND BODY, BY UNITING, FORM AN INDIVIDUAL AGGREGATE. 6. It would, however, probably be better to put the matter thus: by their presence, the faculties of the soul cause reaction in the organs which possess them, so that while they themselves remain unmoved, they give them the power to enter into movement.[295] In this case, however, when the living organism experiences suffering, the life-imparting cause must itself remain impassible, while the passions and energies belong wholly to that which receives life. In this case, therefore, the life will not belong exclusively to the soul, but to the conjunction of the soul and body; or, at least, the latter's life will not be identical with the soul's, nor will it be the faculty of sensation, which will feel, but the being in whom that faculty inheres. SENSATION IMPLIES FEELING SOUL. If, however, sensation, which is no more than a corporeal emotion, finds its term in the soul, the soul must surely feel sensation; therefore it does not occur as an effect of the presence of the faculty of sensation, for this ignores the feeling agent back of it. Nor is it the conjunction of soul and body, for unless the faculty of sensation operate, that aggregate could not feel, and it would then no longer include as elements either the soul, or the faculty of sensation. SOUL-LIGHT FORMS ANIMAL NATURE. 7. The aggregate results from the presence of the soul, not indeed that the soul enters into the aggregate, or constitutes one of its elements. Out of this organized body, and of a kind of light furnished by herself, the soul forms the animal nature, which differs both from soul and body, and to which belongs sensation, as well as all the passions attributed to the animal.[296] RELATION OF ANIMAL TO HUMAN NATURE. If now we should be asked how it happened that "we" feel, we answer: We are not separated from the organism, although within us exist principles[297] of a higher kind which concur in forming the manifold complex of human nature. EXTERNAL AND INTERNAL SENSATION. As to the faculty of sensation which is peculiar to the soul, it cannot be the power of perceiving the sense-objects themselves, but only their typical forms, impressed on the animal by sensation. These have already somewhat of the intelligible nature; the exterior sensation peculiar to the animal is only the image of the sensation peculiar to the soul; which, by its very essence is truer and more real, since it consists only in contemplating images while remaining impassible.[298] Ratiocination, opinion and thought, which principally constitute us,[299] deal exclusively with these images, by which the soul has the power of directing the organism. DISTINCTION IN THE WHOLE ORGANISM.