The Wealth of Nations by Part 4 Chapter 7 Page 133

Our merchants frequently complain of the high wages of British labour as the cause of their manufactures being undersold in foreign markets, but they are silent about the high profits of stock. They complain of the extravagant gain of other people, but they say nothing of their own. The high profits of British stock, however, may contribute towards raising the price of British manufactures in many cases as much, and in some perhaps more, than the high wages of British labour.

It is in this manner that the capital of Great Britain, one may justly say, has partly been drawn and partly been driven from the greater part of the different branches of trade of which she has not the monopoly; from the trade of Europe in particular, and from that of the countries which lie round the Mediterranean Sea.