The Wealth of Nations by Part 2 Chapter 2 Page 5

both the price and the produce go to this stock, the price to that of the workmen, the produce to that of other people, whose subsistence, conveniences, and amusements, are augmented by the labour of those workmen.

The intention of the fixed capital is to increase the productive powers of labour, or to enable the same number of labourers to perform a much greater quantity of work. In a farm where all the necessary buildings, fences, drains, communications, etc., are in the most perfect good order, the same number of labourers and labouring cattle will raise a much greater produce than in one of equal extent and equally good ground, but not furnished with equal conveniencies. In manufactures the same number of hands, assisted with the best machinery, will work up a much greater quantity of goods than with more imperfect