harvester and gather it into my barn. In every part of that process the tool is but the reaching out of my energy beyond my body. There is no place where that tool becomes vitalized and productive.
I am a porter, I carry packages in my hands. To increase my efficiency I build me a cart, and smooth a roadway, by which I am able to carry more and heavier packages with ease. I construct a roadway across the continent, and with the power which I employ I carry the commerce of the nation. I build ships and direct them from continent to continent and handle the commerce of the world. Now there is no place from this simple carriage in the hand, to the complicated and stupendous system of transportation, where the tool is not wholly dependent on the vital intelligent energy.
When the vital principle leaves this body, then hands, eyes and the whole body is helpless. Withdraw the vital energy from these means by which man extends his power beyond the body, and all the implements of agriculture will not produce a harvest, and the wheels of commerce on land and sea would instantly stop.