The Wealth of Nations by Part 5 Chapter 2 Page 35

This tax is levied by a much smaller number of officers than any other which affords nearly the same revenue. As the tax upon each district does not rise with the rise of the rent, the sovereign does not share in the profits of the landlord’s improvements. Those improvements sometimes contribute, indeed, to the discharge of the other landlords of the district. But the aggravation of the tax which may sometimes occasion upon a particular estate is always so very small that it never can discourage those improvements, nor keep down the produce of the land below what it would otherwise rise to. As it has no tendency to diminish the quantity, it can have none to raise the price of that produce. It does not obstruct the industry of the people. It subjects the landlord to no other inconveniency besides the unavoidable one of paying the tax.