All men say that the soul is in the body, however, because the soul is not visible, while the body is. Observing the body, and judging that it is animated because it moves and feels, we say that it has a soul, and we are thereby led to suppose that the soul is in the body. But if we could see and feel the soul, and if we could realize that she surrounds the whole body by the life she possesses, and that she extends around it equally on all sides till the extremities, we would say that the soul is in no way in the body, but that on the contrary the accessory is within its principle, the contained within the container, what flows within the immovable. THIS LEAVES THE QUESTION OF THE MANNER OF THE SOUL'S PRESENCE. 21. How would we answer a person who, without himself making any statements in regard to the matter, should ask us how the soul is present to the body; whether the whole soul is present to the body in the same manner, or whether one of her parts is present in one way, and another in some other way? THE SOUL IN A BODY AS A PILOT IN A SHIP. Since none of the comparisons that we have formerly examined seems to express the relation of the soul to the body, properly we might say that the soul is in the body as the pilot is in the ship.[131] This illustration is satisfactory in that it emphasizes the soul's being separable from the body; but it does not properly indicate the presence of the soul in the body. If the soul be present in the body as a passenger in a ship, it would be there only by accident, and the illustration is not yet satisfactory if changed to the pilot's presence in the ship he is steering; for the pilot is not present to the whole of the ship as the whole soul is in the body.[132] One might illustrate the soul's presence in the body as an art inheres in its instruments; as, for instance, in the helm, which might be supposed to be alive, containing the power of steering the ship skilfully. This is still unsatisfactory, because such an art comes from without. The soul might indeed be compared to a pilot who should be incarnated in his helm; and the soul might be in the body as in some natural instrument,[133] so that the soul would move it at pleasure. This however might still fail to explain the manner in which the soul would exist in her instrument. Therefore, though the latter illustration is an improvement on the former, we must still seek one which closer approaches reality. THE SOUL PRESENT IN THE BODY AS LIGHT IN AIR.