The Wealth of Nations by Part 1 Chapter 10 Page 57

In most parts of Scotland she is a good spinner who can earn twentypence a week.

In opulent countries the market is generally so extensive that any one trade is sufficient to employ the whole labour and stock of those who occupy it. Instances of people’s living by one employment, and at the same time deriving some little advantage from another, occur chiefly in poor countries. The following instance, however, of something of the same kind is to be found in the capital of a very rich one. There is no city in Europe, I believe, in which house-rent is dearer than in London, and yet I know no capital in which a furnished apartment can be hired as cheap.

Lodging is not only much cheaper in London than in Paris; it is much cheaper than in Edinburgh of the same degree of goodness; and