A Treatise of Political Economy
by Say, Jean-Baptiste (1850)
Machines cannot be constructed without considerable labout. Which gives occupations to the hands they throw out of employ. For instance the supply of a city with water by conduits gives increased occupation to carpenters, masons, smith, paviours & c. in the construction of the works, the laying down the main and branchpipes, &c, &c (p.87)
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