Chap. III. ANTIENT METAPHYSICS. 73 



moves the ftone, or the tool ufed by the artift *. For, in common 

 language, we fay that it is the jnan who nwues the ftone by means of 

 the lever^ and the xirtijl who operates upon the fubjedt of his art by his 



tools. 



Of what nature this ?no'uing potver is, what fort of fiibflance it is, 

 or what properties belong to it, I determine nothing at prefent ; but I 

 think I have faid enough to eftabhfh the dlftindion that I have made 

 betwixt body and mind ; and, to fliow that, as body certainly is movedy 

 and yet cannot move itfelf, there muft be in nature fome other moving 

 principle^ which is what I call mind. And I will only further add, 

 that, where, in the works of nature, the moving principle h internal, 

 and appears to ad not immediately, but by the intervention of a cer- 

 tain mechanifm, the conflrudion, arrangement, and difpofition of the 

 feveral parts of the body neceflary for that purpofe, is called organiza- 

 tion ; and thofe parts, by means of which the motion is performed, are 

 called organs. 



Such bodies as are moved by an internal principle, without any ex- 

 ternal impulfe, are commonly faid, but not with philofophical pro- 

 priety, to move themfehes. But nothing, as I have ihown, can move 

 itfelf: And the principle of ?jiotion in them, though internal, is as 

 diftindt from the body moved^ as if it were external t« This internal 



K principle, 



* To this purpofe Proclus, in the fecond book of his Commentary upon the Timacus, 



TT«V S'b T« -TTOiav)! uiruf4,XTt)) l(f\t, KCiv ytc^ orafict t], ^vfct^lfiV x<r0ft,XTOi^ ZTOUI. ** EvCiy thing that 



** a(ls is incorporeal', for, though it be body which ac7j, it is by iticorporcal poivcrs that 

 " it aFls'^ "When, therefore, we fee one body moving another, though it be body 

 which immediately produces the motion, it is not of itfelf that it does fo, but by in- 

 corporeal powcKf x\\-3it\Sy by viind, which gives it the r;?£j/zri'/io"arr that it communi- 

 cates to other bodies. 



t Arillotle, in his Phyfics, particularly in the 8th book, cap. 4. fpeaks much of 

 the T« vp" uvruv xivovfcivx. ; but it is plain, from what he fays there, and clfcwhere, that 

 he only means, by that expreflion, thofe things which have the principle of motion 

 internal : And that he believed that, in every thing, what moves is different from wh.at 



IS 



