“For several years past the revenues of the government have been unequal to its expenditures, and consequently loan after loan, sometimes direct and sometimes indirect in form, has been resorted to. By this means a new national debt has been created, and is still growing on us with a rapidity fearful to contemplate — a rapidity only reasonably to be expected in a time of war. This state of things has been produced by a prevailing unwillingness either to increase the tariff or resort to direct taxation. But the one or the other must come. Coming expenditures must be met, and the present debt must be paid; and money cannot always be borrowed for these objects. The system of loans is but temporary in its nature, and must soon explode. It is a system not only ruinous while it lasts, but one that must soon fail and leave us destitute. As an individual who undertakes to live by borrowing soon finds his original means devoured by interest, and, next, no one left to borrow from, so must it be with a government. We repeat, then, that a tariff sufficient for revenue, or a direct tax, must soon be resorted to; and, indeed, we believe this alternative is now denied by no one.”

Whig Circular (1843), reported in Richard Watson Gilder and Daniel Fish Complete Works of Abraham Lincoln, Volume 1 (1905)
1840s