The man whose whole life is spent in performing a few simple operations, of which the effects are perhaps always the same, or very nearly the same, has no occasion to exert his understanding or to exercise his invention in finding out expedients for removing difficulties which never occur. He naturally loses, therefore, the habit of such exertion, and generally becomes as stupid and ignorant as it is possible for a human creature to become.
Adam SmithCapitals are increased by parsimony, and diminished by prodigalityand misconduct. By what a frugal man annually saves he not onlyaffords maintenance to an additional number of productive hands?but?he establishes as it were a perpetual fund for the maintenance of an equal number in all times to come.
Adam SmithAvarice and injustice are always shortsighted, and they did not foresee how much this regulation must obstruct improvement, and thereby hurt in the long-run the real interest of the landlord.
Adam SmithThe machines that are first invented to perform any particular movement are always the most complex, and succeeding artists generally discover that, with fewer wheels, with fewer principles of motion, than had originally been employed, the same effects may be more easily produced. The first systems, in the same manner, are always the most complex.
Adam Smith