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114 ESSAYS anv OBSERVATIONS 
nexion betwixt motion and thinking, that a 
power of beginning motion feems neceffarily 
to infer a power of thinking; tho’ we cannot 
affirm inverfely, that a power of thinking 
mutt infer a power of beginning motion. 
Bur if the bare beginning of motion feems 
to require an intelligent caufe, the power of 
eravity, furely, has the higheft title to lay claim 
to that origin. The motions arifing from gra- 
vity are evidently of fuch a fort, as cannot, 
without the greateft violence to reafon, be 
afcribed to any blind tendency betwixt the 
attracting bodies. This will beft appear up- 
on ftating fome of its known effets. A 
{tone is drawn towards the earth in Europe 
and in America; it changes its direction in 
different places, pointing always nearly to the 
center of the earth, (or exactly in a line per- 
pendicular to the level furface) in the fame 
manner as iron does towards the load{tone, or 
a feather to the electric tube. The attraCive 
force of a {tone diminifhes, the farther it is 
removed from the earth, according to a 
fixed rule, or as the fquare of the diftance 
encreafes. A body placed by itfelf would 
move no way; but two bodies run together. 
A given body is more attracted to a large 
; quantity 
