The Wealth of Nations by Part 5 Chapter 2 Page 215

Such are, for example, the duties upon foreign wines, upon coffee, chocolate, tea, sugar, etc.

The duties upon the cheaper luxuries of home produce destined for home consumption fall pretty equally upon people of all ranks in proportion to their respective expense. The poor pay the duties upon malt, hops, beer, and ale, upon their own consumption: the rich, upon both their own consumption and that of their servants.

The whole consumption of the inferior ranks of people, or of those below the middling rank, it must be observed, is in every country much greater, not only in quantity, but in value, than that of the middling and of those above the middling rank.

The whole expense of the inferior is much greater than that of the superior ranks.