fubftJUng between the Arts 77 
ardour of his Itudies, the keennefs of his refearch. 
He borrows ideas, images, illuftrations, from 
kindred fciences. His mind widens with in- 
creafing knowledge. He fees every fubjeCt, as 
it were, in a larger field of vifion. He views it 
round, in a greater variety of afpeCts. His foul 
is expanded, his judgment ftrengthened, and all 
his powers afiifled, and improved. 
But I meant, principally, to extend this fenti- 
ment to the arts. Though they too have a near 
affinity, yet it is not generally imagined, that, 
to excel in one art, it is proper a man fhould 
have any knowledge of others ; efpecially of thofe, 
which appear more remote and unconnected. 
That a poet fnould be a painter, or a painter a 
poet, may feem defirable, from the fimilarity of 
tafte, of genius, and of imagination, necelTary 
to excellence in thele kindred arts. But, in the 
lower, and mechanic employments, how feldom 
is it known, that a man, verfed in one kind of 
ingenious labour, has the mod diffant knowledge 
of others, even of thofe, which feem mod nearly 
connefted with his own ? How many watch¬ 
makers know very little of clock making; though, 
here , the connection is as clofe as pofiible ? 
How many machines are ufed at Birmingham, 
in the different branches of manufacture carried 
on there, of which a mechanic at Manchefter, 
even in the fame line, is entirely ignorant ? There 
are, it is probable, in every manufafture, I had 
• almoft 
