A WORLD OUTSIDE OF OUR WORLD WOULD NOT BE VISIBLE.
8. If there were a body outside of our world, and if an eye observed it from here without any obstacle, it is doubtful that the eye could see that body, because the eye would have no affection common to it; for community of affection is caused by the coherence of the single organism (that is, the unity of the world). Since this community of affection (or, sympathy), supposes that sense-objects and that the senses belong to the single organism, a body located outside of the world would not be felt, unless it were part of the world. In this case, it would be felt. If it were not a part of the world, but yet by its color and other qualities it was conformed to the organ that was to cognize it, would it be felt? No, it would not be felt, that is, if such a hypothesis (of a body located outside of the world) were at all admissible. If however, anyone should refuse to admit such a hypothesis, he would pretend that it is absurd that the eye should not see the color located in front of it, and that the other senses do not perceive the qualities before them. That is the reason of its absurdity. For we are active or passive only because we are integral parts of the single organism, and are located within it. Is anything still left to be considered? If what we have said suffices, our demonstration is finished; otherwise we shall have to give still further proofs to support our proposition.