The Wealth of Nations by Part 5 Chapter 2 Page 183

Decency nowhere requires that any man should eat butchers’ meat, as it in most places requires that he should wear a linen shirt or a pair of leather shoes.

Consumable commodities, whether necessaries or luxuries, may be taxed in two different ways. The consumer may either pay an annual sum on account of his using or consuming goods of a certain kind, or the goods may be taxed while they remain in the hands of the dealer, and before they are delivered to the consumer. The consumable goods which last a considerable time before they are consumed altogether are most properly taxed in the one way; those of which the consumption is either immediate or more speedy, in the other. The coach-tax and plate-tax are examples of the former method of imposing: the greater part of the other duties of excise and customs, of the latter.