The Wealth of Nations by Part 5 Chapter 2 Page 143

property, tend to diminish the funds destined for the maintenance of productive labour. They are all more or less unthrifty taxes that increase the revenue of the sovereign, which seldom maintains any but unproductive labourers, at the expense of the capital of the people, which maintains none but productive.

Such taxes, even when they are proportioned to the value of the property transferred, are still unequal, the frequency of transference not being always equal in property of equal value.

When they are not proportioned to this value, which is the case with the greater part of the stamp-duties and duties of registration, they are still more so. They are in no respect arbitrary, but are or may be in all cases perfectly clear and certain. Though they sometimes fall upon the person who is