The Wealth of Nations by Part 2 Chapter 4 Page 14

favourable to the opinion which we are going to examine; and even upon this supposition it is utterly impossible that the lowering of the value of silver could have the smallest tendency to lower the rate of interest.

If a hundred pounds are in those countries now of no more value than fifty pounds were then, ten pounds must now be of no more value than five pounds were then. Whatever were the causes which lowered the value of the capital, the same must necessarily have lowered that of the interest, and exactly in the same proportion. The proportion between the value of the capital and that of the interest must have remained the same, though the rate had been altered. By altering the rate, on the contrary, the proportion between those two values is necessarily altered. If a hundred pounds now are worth no more than fifty