Chap. XV. ANTIENT METAPHYSICS. i&i 



CHAP. XV. 



Proofs in the preceding Chapter a priori — thofe in this Chapter a pofte- 

 riori, being from the Phaenomena (5/' Nature — Ride of philofophlfing in 

 this Matter the Jame as that laid doivn by Sir Ifaac Newton — Lauus 

 of Nature concerning Body — No Vis Inertiae /wBody — on the contra- 

 ry ^ a Vis Mobilitatis — The f ever al Ways in nx^hich Body is moved — 

 Cauje of thefejeveral Motions, — Om Caufe material^ viz, by Impulfe of 

 Body upon Body — Tivo things required in order that this Caufefhould 

 operate — Nojuch thing as Attra6tion, properly fpeaking — only a Ten^- 

 dency in one Body to move toivards another — Cauie of the Motion of 

 the Celeflial Bodies, according to the Neiv Philofophy^ tnere Hypothec 

 Jis — That Motion not to be accounted for by external Impulje of a fubtle 

 Fluid — The Averfion of our prefent Philojophers to Mind — In vuhat 

 Senfe Nature can be faid to produce the Motion of Bodies. — Mind efjential 

 to Nature — Motion in the Vegetable not to be accounted for by Me- 

 chanic Caufes — fill lefs the Motion of the Animal — Wonderful Poiver 

 exerted by the Moving Principle in the Animal — Senfation cannot be 

 produced by a Material Caufe — Reafoning and Conlcioulneis far lefs, 



THE proofs in the preceding chapter, of the immateriality of 

 the moving principle or mind^ are drawn from the nature ot the 

 things to which they relate ; namely, motion^ body, and 7hind ; and 

 therefore are what are commonly called arguments a priori. But thofe 

 I am to ftate in this chapter are a po/ieriori, for they are drawn trom 

 the phaenomena of nature, that is, facets falling unJer our obfcrvation 

 and experien.:e ; from which we argue backwards to their caufes. 



I obferved, in the beginning of this work, that the fcicnce of meta- 

 phylies is founded upon phyfics, a:id, as the name imports. C(u-nes, ui 

 the order of teaching, after phjfics ; becaufe mind, which is its lub- 



jecl,, 



