Chap.' III. ANTIENT METAPHYSICS. 19 



to be the fervant of our Intelletfl, and is immediately under its com- 

 mand, which our Vegetative Part is not, be not rightly conftituted, 

 we muft be very deficient, particularly in practical life. It is evi- 

 dent, therefore, that a great part of the excellency of Man muft de- 

 pend upon his Animal Nature ; fo that it muft be corifidered very 

 accurately in this Philofophy, and will be the fubjed of the Se- 

 cond Book of this Volume ; and I have only mentioned it here, to 

 fliow its connedion wuth the other parts of our Nature, and alfo 

 wherein it differs from them. 



It is for the fame reafon that I mention here the hlgheft pait of 

 our compofition — our Intelled ; The diftindion betwixt it and the 

 Vegetative Part of us is evident : And, as to our Senfitive Nature, it 

 is clear that the Intelled operates without either Senfe or Imagina- 

 tion, by which only the Animal operates ; nor is it conneded in its 

 operations with any particular parts of the Body, as our Vegetable 

 part is with arteries, veins, and other veffels, and our Animal wiih 

 nerves, fibres, mufcles, and finews, fo that any diforders in thefe 

 particular parts do not affed it. But it is conneded with the whole 

 Animal Syftem ; and, therefore, whatever tends to dcftroy, or very 

 much hurt the principal vital parts, fuch as the head or heart, muft 

 of neceflity affed its operations. But we are not therefore to fuppofe 

 that the Intelled operates by the head or the heart, for they are not 

 even the inftruments of its operations ; they are only things with- 

 out which, in its prefent ftate, it could not operate. But fuch things 

 are different, both from the caufe and the injlrument. Thus, if a 

 man ftands out of my way, by which means I fee an objed that o- 

 therwife I fhould not fee, his removing is neither the caufe nor the 

 inftrument of my feeing the objed, and yet without it I fliould not 

 have feen the objed *. They may be confidered alfo to be the fame 



C 2 with 



* Sec what I have fuicl upon this fubjecSl, Vol. ii. p. 215. where, upon the autho- 

 rity of Plato, 1 have tftabliflied the diftindlion betwixt the Caufe ^ and that, without 

 which the caufe cannot operate. 



