industry; and also by their unavoidable inequality are more grievous than by the real burden which they impose. It is surprising, therefore, to see them have place among any civilized people.
In general, all poll-taxes, even when not arbitrary—which they commonly are—may be esteemed dangerous; because it is so easy for the sovereign to add a little more and a little more to the sum demanded, that these taxes are apt to become altogether oppressive and intolerable. On the {p82} other hand, a duty upon commodities checks itself, and a prince will soon find that an increase of the impost is no increase of his revenue. It is not easy, therefore, for a people to be altogether ruined by such taxes.
Historians inform us that one of the chief causes of the destruction of the Roman state was the alteration which Constantine introduced into the finances, by substituting a universal poll-tax in lieu of almost all the tithes, customs, and excises which formerly composed the revenue of the empire. The people in all the provinces were so grinded and oppressed by the publicans that they were glad to take refuge under the conquering arms of the barbarians, whose dominion, as they had fewer necessities and less art, was found preferable to the refined tyranny of the Romans.
There is a prevailing opinion that all taxes, however levied, fall upon the land at last. Such an opinion may be useful in Britain, by checking the landed gentlemen, in whose hands our legislature is chiefly lodged, and making them preserve great regard for trade and industry; but I must confess that this principle, though first advanced by a celebrated writer, has so little appearance of reason that were it not for his authority it had never been received by anybody. Every man, to be sure, is desirous of pushing off from himself the burden of any tax which is imposed, and laying it upon others; but as every man has the same inclination, and is upon the defensive, no set of men can be supposed to prevail altogether in this contest. And why the landed gentleman should be the victim of