"We may be assured by past experience, that such a practice [as some states charging high taxes on goods from other states] would be introduced by future contrivances; and both by that and a common knowledge of human affairs, that it would nourish unceasing animosities, and not improbably terminate in serious interruptions of the public tranquility."
"The defect of power in the existing confederacy, to regulate the commerce between its several members is in the number of those which have been clearly pointed out by experience . . . . A very material object of this power was the relief of the States which import and export through other States from the improper contributions levied on them by the latter."
"But the mild voice of reason, pleading the cause of an enlarged and permanent interest, is but too often drowned, before public bodies as well as individuals, by the clamors of an impatient avidity for immediate and immoderate gain."