Chap. 9> ^ Trevifeof BODIES. 81 



pofe and mike up one infinite. But if he will have the virtue be 

 infinite in each half, he therein allo'vcth that there is no more 

 virtue, in the whole body then in one halfofit:which is agiinft 

 the nature of bodies. Now that a body cannot be infinite in 

 greatncfle, is proved in the (econd knot of Mafter Whites firft 

 Dialogue of the world. And thus it is evident,thatby che virtue 

 of pure bodies there can be no motion in an inft-mt. 4' 



On the other fide it followeth that there cannot be fo little a t i;, that is not 

 force in nature, but that giving it time enough, it will move a 



n -ii i i r i i th 



the greatett weight that can be imagined : for tnetmngi we w 

 treat of, being all of them quantities ; they may by divifion and 

 multiplication, be brought unto equality. As for example ; fup- 

 pofing thc weight of a moveablc,to be a million of pounds; and 

 that thc mover is able to move the millioneth part of one of 

 thofe pounds,in a million of years,the rnillioncth part ofa pace, 

 through a medium of a certain rarity. Now, feeing that years 

 may be multiplied fb,as to equalize the force of this mover, unto 

 the weight of thc moveable : it followeth clearly that in fo ma- 

 ny millions of years.this force may move thc whole weight ofa, 

 million of pounds, through the determined medium in a deter- 

 minate number of millions of years, a million ofpaces : for fuch 

 a force is equall to the required effect ; and by confequencc, if 

 thc eftc&fhould not follow, there would be a complcat caufc 

 put, and no erTecl: refult from it. 



But pcradvcnture it is necdfull to illuftratethis point yet fur- 

 ther:fuppo(e then a weight never fo great to be A, and a force 

 never fo little to be B. Now if you conceive that fomc other 

 force movcth A, you muft withall conceive that it movcth A fome 

 fpace, fince all motion implicth neceflarily that it be through 

 fbme(pace:let that fpace be CD. And brcaufe a body cannot be 

 moved in a /pace in an inflant,but requircth fame time to have 

 its motion performed in; it followeth, that h.re muft be a deter- 

 mined time, in which the conceived force muft move thc weight 

 A through thc fpace CD : let that rime be EF. Now then, 

 this is evident that it is all one to fay that B moreth A> and 

 to fay that B moveth A through a fpace in a time ; fo that if 

 any part of this be left out, it cannot be undcrftood that B mo- 

 vcth A. Therefore to exprcfle particularly thc effect which 

 B is to do upon A, we mult fay that B muft move A a certain 



F fpace 



