andFaJJlonSy upon the Underftanding, 387 
Here, it is true, imagination has the narroweft 
range: but it would be falfe to fay, it has no 
range at all. For what are the fubjeds of his 
boafted reafonings ? They are points , lines t 
JuperficieSy all of which he can only imagine. 
A Point has neither length, breadth, nor thick- 
nefs. A Line has length, but neither breadth, 
nor thicknefs. A Superficies has length, breadth, 
but not thicknefs. Are then Lines, Points, or 
Superficies, objeds of vifion, or of lenfe ? By no 
means. They are the mere creatures of fancy. 
His Figures likewife of circles, fquares, &c. are 
not perfed. They contain innumerable ex- 
crefcences, and deformities •, and yet, his 
reafonings fuppofe figures exad and faultlefs. 
And, how often mud: imagination prefent before 
him, difiances, heights, orbits, &c. which he 
has not immediately under his eye, which he 
cannot pojffibly concieve, without the aid of fancy ? 
The application of mathematics to Aftronomy, 
Navigation, &c. demands the Janie affiftance. 
Who would lcruple to fay, that Sir Ifaac Newton, 
enjoyed a brilliant imagination In fketching the 
outlines of his amazing fyfiem—in roving through 
the pathlels wilds of fpace—in contemplating 
“ The dependencies, 
“ The bearings, and the ties” 
of this ftupendous univerfe, muft he not have 
pofiefied a fancy of the boldefi wing , yet ac¬ 
companied, in all its flight, by the mofi wife 
C c 2 and 
