Now, of all things in the world, I understand the least of mechanism—I have neither genius, or taste, or fancy—and have a brain so entirely unapt for every thing of that kind, that I solemnly declare I was never yet able to comprehend the principles of motion of a squirrel cage, or a common knife-grinder's wheel—tho' I have many an hour of my life look'd up with great devotion at the one—and stood by with as much patience as any christian ever could do, at the other—
