As I rode back to Detroit, a vision of Henry Ford's industrial empire kept passing before my eyes. In my ears, I heard the wonderful symphony which came from his factories where metals were shaped into tools for men's service. It was a new music, waiting for the composer with genius enough to give it communicable form.

I thought of the millions of different men by whose combined labor and thought automobiles were produced, from the miners who dug the iron ore out of the earth to the railroad men and teamsters who brought the finished machines to the consumer, so that man, space, and time might be conquered, and ever-expanding victories be won against death.

Diego Rivera