The Wealth of Nations by Part 5 Chapter 2 Page 217

small part even to the lowest rank, common labourers sometimes possessing in property an acre or two of land.

Though the expense of those inferior ranks of people, therefore, taking them individually, is very small, yet the whole mass of it, taking them collectively, amounts always to by much the largest portion of the whole expense of the society; what remains of the annual produce of the land and labour of the country for the consumption of the superior ranks being always much less, not only in quantity, but in value. The taxes upon expense, therefore, which fall chiefly upon that of the superior ranks of people, upon the smaller portion of the annual produce, are likely to be much less productive than either those which fall indifferently upon the expense of all ranks, or even those which fall chiefly upon that of the