352 ANTIENT METAPHYSICS. Book IV. 



2tiOy As there is no time vA'Ithout motion^ fo there is no motion with- 

 out body. And there Is a fourth thing v;hlch alfo muft be confidered, 

 viz. number. For the revolutions of the motion, or the parts of that re- 

 volution, muft be numbered. And hence it is that AriQotle has defined 

 time not improperly to be the number cf motion *. Thefe four are 

 all conneded, but different. Body comes firft in order, and is the 

 leading idea, as, without ir, there could not be motion. Next comes 

 motion ; by which we are to underfland only one of the three kinds 

 of motion before mentioned, viz. from place to place, exprefled by- 

 one word in Greek, viz. spc^*, for the other kinds of motion would not 

 ferve the purpofe of a meafuref; and not even all, as I have fliovvn, 

 of that kind. And to this motion, number applied, produces time. 

 From this account, it is evident that time is an adjuncSt made to mo^ 

 iion by the mind, through the application of number to it ; for, with- 

 out number, there can be no \\\t or application of any thing to any 

 purpofe in human life. Moreover, as motion cannot be without body, 

 nor time without motioUy it is of neceffity that both time and motion 

 fhould participate of the qualities of lody-^ from which they are deri- 

 ved. As body, therefore, is continuous, and infinitely divifible, fo is 

 motion^ and likewife time f. But they are continuous in a different 

 manner. For the parts of body are continuous, as co-exifting and 

 lying together. But, as in motion, the feveral parts of the body oc- 

 cupy feveral fpaces, not at once, but by fucceffion, one after another, 

 it is neceffary that the parts of motion^ though continuous, fliould not 

 be co-exiflcnt, but exiftent by fucceffion ; but they mufl be infinitely 

 divifible, as the parts of the body moved are ; and, as time is nothing 

 but motion ufed as a meafure, the fame mull be true of tijne, 



• «§/*(«•? Tijf KifnciMf, Arifl. Phyf. lib. 4. cap. ult. § 7<. 

 t Ibid. cap. 17. § 3. 

 $ Ibid. cap. 18. 57. 



