62 A VIS INERTIAE

forced to suppose gravity natural to matter;that is, by N° 16. he supposes it re si sting mat- :ter; and therefore such as wants an immate- ;rial Mover. He supposes his matter eternal; :which in the last section of these papers it(hall be shewn not to be. He gives it a power'ofchanging the direction of its motion; which,as has been shewn in N° 11. of this, it hasnot. And, lastly, he makes his atoms infran-gible to all power, which, as {hall be shewn,they are not. If these four things had beendeified him, he would have been forced to in-troduce an universal non-existence; for his:casual world without these returns to nothing-In the supposition of resisting matter, motionmight be in some degree communicated byone body to a n other, because ofthe resistance >but in the supposition of unresisting matter,every body that is moved, must want an im-material mover, because of the want of mo-ment in one part of matter to act on anotherpart of matter. In short, I believe there is n°man but is already convinced in his heart ofthe necessity of matter’s being a substance re-sisting all change of state in itself; and of th eimpossibility that ever matter can become, byany power, a living,self-movtng being. \Vb°could have thought that mere passivity, and