PHYSICAL ann LITERARY. 125 
with another, in order to correct our firft 
 impreffions. Epicurus is to be applauded for 
believing on the credit of his eye-fight, that 
the fun and moon were no bigger than a cart- 
wheel or a cheefe. The peafant, who thinks 
that the fun moves from eaft to weft every 
» day, is wifer in that refpect, than the great- 
eft philofopher ; and Copernicus is to be re- 
garded as a common enemy to mankind, 
** for declaring war again{t our fenfes.”’ 
- Tue grand queftion to be refolved in this 
controverfy, is not whether we have clearer 
conceptions of material or immaterial .fub- 
ftances, as we are equally ignorant of both; 
but whether the power of thinking, which 
is a known faculty of fome fubftance, be not 
' abfolutely indivifible? and as fuch, incom- 
patible with the known properties of matter? 
The moft plaufible objection that can well be 
made again{t this argument, arifes from the 
late obfervations made concerning the poly- 
- pus, and other living creatures of that kind. 
Yet thefe, when duly confidered, will be 
- found entirely confiftent with the indivifibi- 
lity and unity of thinking fubftance. They 
_ do indeed exhibite’ a remarkable peculiarity 
in the manner of the propagation of thefe 
animals ; 
