It is frivolous to fix pedantically the date of particular inventions. They have all been invented over and over fifty times. Man is the arch machine, of which all these shifts drawn from himself are toy models. He helps himself on each emergency by copying or duplicating his own structure, just so far as then need is.
Ralph Waldo EmersonMan is a shrewd inventor, and is ever taking the hint of a new machine from his own structure, adapting some secret of his own anatomy in iron, wood, and leather, to some required function in the work of the world.
Ralph Waldo EmersonThe men who come on the stage at one period are all found to be related to each other. Certain ideas are in the air.
Ralph Waldo Emerson