No one knows what that material being is, which is called "spirit," to which--be it observed--you give this material name, signifying "wind." All the first fathers of the Church believed the soul to be corporeal. It is impossible for us limited beings to know whether our intelligence is substance or faculty: we cannot thoroughly know either the extended being, or the thinking beings, or the mechanism of thought. We exclaim to you, with the ever to be revered Gassendi and Locke, that we know nothing by ourselves of the secrets of the Creator. And are you gods, who know everything? We repeat to you, that you cannot know the nature and distinction of the soul but by revelation. And is not this revelation sufficient for you? You must surely be enemies of this revelation which we claim, since you persecute those who expect everything from it, and believe only in it. Yes, we tell you, we defer wholly to the word of God; and you, enemies of reason and of God, treat the humble doubt and humble submission of the philosopher as the wolf in the fable treated the lamb; you say to him: You said ill of me last year; I must suck your blood. Philosophy takes no revenge; she smiles in peace at your vain endeavors; she mildly enlightens mankind, whom you would brutalize, to make them like yourselves. SPACE. What is space? "There is no space in void," exclaimed Leibnitz, after having admitted a void; but when he admitted a void, he had not embroiled himself with Newton, nor disputed with him on the calculus of fluxions, of which Newton was the inventor. This dispute breaking out, there was no longer space or a void for Leibnitz. Fortunately, whatever may be said by philosophers on these insolvable questions, whether it be for Epicurus, for Gassendi, for Newton, for Descartes, or Rohaut, the laws of motion will be always the same. _Que Rohaut vainement sèche pour concevoir_ _Comment tout étant plein, tout a pu se mouvoir_. --BOILEAU, Ep. v, 31-32. That Rohaut exhausts himself by vainly endeavoring to understand how motion can exist in a plenum will not prevent our vessels from sailing to the Indies, and all motion proceeding with regularity. Pure space, you say, can neither be matter, nor spirit; and as there is nothing in this world but matter and spirit, there can therefore be no space. So, gentlemen, you assert that there is only matter and spirit, to us who know so little either of the one or the other--a pleasant decision, truly! "There are only two things in nature, and these we know not." Montezuma reasons more justly in the English tragedy of Dryden: "Why come you here to tell me of the emperor Charles the Fifth? There are but two emperors in the world; he of Peru and myself." Montezuma spoke of two things with which he was acquainted, but we speak of two things of which we have no precise idea.