The world is his debtor, and he has it in pawn and pledge to him for the value of that dollar or farm or horse or cloth or wheat.

Now, a tariff law can be and frequently is framed so as to lift or lower the 'prices' of all or any of these.

If your argument be good it should be just as potent to prevent a tariff law that augments riches in one hand or detracts from riches in another, as to prevent a coinage law that does the same.
"Properly speaking, there can be no separation of mankind into creditor and debtor classes, since, as we have seen, every man with a dollar's worth of property is in the creditor class to the extent of that dollar, while the world is in the debtor class and owes him therefor.

There can be but two classes: those who own something, and those who don't.

There lies the sole natural division; and not a law is framed, whether it be for a tariff or an appropriation or an army or a navy or a coinage or a bond issue or what you will, that does not, in lesser or greater degree, add to or take from the riches of some man or men.