The Wealth of Nations by Part 4 Chapter 5 Page 34

The bounty upon the exportation of corn is liable to this further objection, that it can in no respect promote the raising of that particular commodity of which it was meant to encourage the production. When our country gentlemen, therefore, demanded the establishment of the bounty, though they acted in imitation of our merchants and manufacturers, they did not act with that complete comprehension of their own interest which commonly directs the conduct of those two other orders of people. They loaded the public revenue with a very considerable expense; they imposed a very heavy tax upon the whole body of the people; but they did not, in any sensible degree, increase the real value of their own commodity; and by lowering somewhat the real value of silver, they discouraged in some degree, the general industry of the country, and, instead of advancing,