The Wealth of Nations by Part 4 Chapter 7 Page 132

dearer; must both buy less and sell less; must both enjoy less and produce less, than she otherwise would do.

It subjects her to a relative disadvantage; because in such branches of trade it sets other countries which are not subject to the same absolute disadvantage either more above her or less below her than they otherwise would be. It enables them both to enjoy more and to produce more in proportion to what she enjoys and produces. It renders their superiority greater or their inferiority less than it otherwise would be. By raising the price of her produce above what it otherwise would be, it enables the merchants of other countries to undersell her in foreign markets, and thereby to jostle her out of almost all those branches of trade, of which she has not the monopoly.