A Treatise on Political Economy
by Say, Jean-Baptiste (1850)
No human being has the faculty of originally creating matter, which is more than nature itself can do but anyone may avail himself of the agents offered him by nature, to invest matter with utility. In fact,industry is nothing more or less than the human employment of natural agents; the most perfect product of labour, the one that derives nearly its whole value from its workmanship is probably the result of theaction of steel, a natural product upon some substance or other, likewise a natural product. (p.65)
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