Chap. II. ANTIENT METAPHYSICS. 7 



the fame kind with our minds, we know by their adions and ope- 

 rations. In the fame manner we know that the minds of other ani- 

 mals exift, though of a kind very different from ours. We know 

 alfo that even bodies that we call inanimate, are moved by mind, 

 but by a mind ftill inferior to the anim^-il mind, fuch as the vegeta- 

 ble and elemental minds ; for I hope to prove by what follows in 

 this woik, that from mind proceeds ultimately all tiie motion in the 

 univerfe. 



And this leads me to fpeak of Motion, the fole agent, under the 

 direction of intelligence, in all the operations of nature in the mate- 

 rial world : For it not only moves bodies from place to place, but it 

 alters their qualities, and adds to their bulk or takes from it ; fo that 

 as I have obferved elfewhere *, it belongs to three categories, or ge- 

 neral ideas, quality^ quantity^ and where. And, as it is chiefly by 

 the motion of bodies in this material world that the being as well as 

 the attribuies of God is proved, it is proper that I fliould treat of it 

 at fome length. 



What Motion is in itfelf, abftradted from the bodies which it 

 moves, 1 have elfewhere f explained at great length, in what I 

 have faid of Ariftotle's definition of it. It will be fufficient here to 

 obferve, that it is a thing which has no fixed or permanent exif- 

 tence, but exifts only in change, or palTage from one thing to ano- 

 ther ; fo that it is no wonder that Ariftotle has laboured fo much to 

 give us a definition of a being of fo fingular a nature, and fuch as 

 there is notking like it in the univerfe. 



What I am here to inquire concerning Motion, is, what the 

 caufe of it is, and how it is produced. And this caufe muft be 

 either body moving itfelf; other bodies moving it ; or, laftly, mind : 



For 



* Vol. I. of this work, p. 2 1 . 

 f Vol. I. p. 13. and 14^ 



