212 ANTIENT METAPHYSICS. Book 11. 



nor in a circular, but in a curve, which is neither the one nor the 



other. 



This mixed kind of motion Is to be obferved chiefly in animals, 

 though they alfo, upon occafions, move either in ftraight lines or 

 in circles ; and the realbn of this variety of motions in them is plain, 

 namely, that their mind, or moving principle, direds them to move 

 different ways, as the exigencies of their nature require. Whe- 

 ther there be of this mixed motion in the vegetable and mineral king- 

 doms, or only the fimple motions of up and cloivn, to andyrowz, 1 be- 

 lieve we have not yet experience fufficient to determine. 



Man is not only moved by that principle of motion, which is com- 

 monly known by the name of miimai life, but by a higher priiiciple, 

 which I call intellcd : But Ariftotle*s divifion is fo comprehenlive, 

 as to take in that motion, and, indeed, every motion that can be con- 

 ceived. 



Of intelled I have faid a great deal, and fhall fay fomething more 

 in the end of this chapter ; but, in the mean time, 1 will proceed to 

 explain, ftill more particularly, the operations of the prmciple of mo- 

 tion in unorganized bodies, in vegetables, and anm:kals, by comparing 

 them with one another, and with the operations of intelled; in man. 

 And, in ii\ejirjl place, I will confider in what the three hrft principles 

 I have mentioned agree, and in what they differ from the operations of 

 the intelleii ; and, in the next place, I will confider in what they dif- 

 fer among theinfelves, and what each has particular and peculiar to 

 itfelf. 



And, in ihtfrfl place, they all agree in this, that the moving prin- 

 ciple has no con/doufnefs^ by which, I mean, that it does not review 



its 



