

Instead, therefore, of placing the world 

 upon the giant, the giant upon the 

 tortoise, and the tortoise upon he could 

 not tell what, he placed the world at 

 once upon itself; and finding it still 

 necessary, in order to solve the appear- 

 ances of nature, to admit of extended 

 and penetrable immaterial substance, if 

 he maintained the impenetrability of 

 matter ; and observing farther, that all 

 we perceive by contact, etc. is this pene- 

 trable immaterial substance, and not the 

 impenetrable one, he began to think he 

 might as well admit of penetrable material, 

 as well as penetrable immaterial substance, 

 especially as we know nothing more of 

 the nature of substance, than that it 

 is something which supports properties, 

 which properties may be whatever we 

 please, provided they be not inconsistent 

 with each other, that is, do not imply 

 the absence of each other. This by no 

 means seemed to be the case in supposing 

 two substances to be in the same place at 

 82 



