58 ANTIENT METAPHYSICS. Book II. 



moves our Bodies : For the fame reafon, it cannot be denied, 

 at leaft, it is not denied by any philofopher among us, that it is a 

 particular IVjind which moves the Brute. From the Brute, in the 

 fame analogical way of reafoning, I proceed to the Vegetable, and 

 from the Vegetable to the unorganized Body ; making this general 

 conclufion, that all thofe feveral Bodies, being moved in the fame 

 manner, are not only moved by Mind internal, but each by a parti- 

 cular Mind *. 



The analogical method of reafoning which hath been ufcd here, is 

 very much pradlifed by Plato, in all his fpeculations concerning Na- 

 ture. And, indeed, it appears to me, that if, in natural philofophy, 

 we do not reafon by analogy, from what we fee and know, to what 

 we do not fee and know, we can make very little progrefs in natural 

 knowledge ; nor do I think it is poffible that we can otherwife make a 

 fcience of it at all. And, accordingly, not only Plato, but our modern 



na- 



• In this analogical way, Dr Prieflley argues, (p. 258. of his Illuftrations of the 

 Difquifitions), where he fays, That, if we fuppofe that it is an immaterial fubftance in 

 Man, and not the mere organization of his Body, that feels and thinks, we muft, for 

 the fame reafon, fuppofe, that it is not the material magnet that attracts iron, but a 

 pecul'ar immaterial fubftance within it ; and he adds, * For the fame reafon, we may 

 ' imagine diflinB immaterial fuhjiances for every operation in Nature, the proximate 

 < caufe of which we are not able to perceive.' And I think the Dodor argues 

 well ; for, if there be an immaterial fubft.mce in Man, and in other animals, by 

 •which they are moved, there muft alfo neceffarily be an immaterial fubdance in 

 unorganized bodies, by which they are moved. The Do6lor, therefore, and I rea- 

 fon in the fame manner : Only we fet out from principles quite different; the Doc- 

 tor maintaining, that there is no immaterial principle in man, and, therefore, there 

 is none in the loadftone, and other unorganized bodies ; I, on the other hand, main- 

 taining, that there is an immaterial principle in Man, and that, therefore, there is 

 one in Bodies unorganized as well as organized. This Ihows me, that the Dodlor 

 is naturally an acute man, and can fee confequences and connedlions of things ; 

 and I have no doubt but that, if he had (ludied the antient philofophy, he would 

 have drawn the fame concluGons from the principles of it that 1 dp. 



