Your mind seems to be seeking an answer to the question, what makes money circulate? The ultimate answer to that question is the indispensability of money. Man will use anything to serve the purpose of money in the absence of something better, but will always seek the best. The best is that which attracts him by its superior stability, not that which rests upon legal compulsion.

For the first seventy years in our Republic only gold and silver coins were legal tender, yet by far the greater amount of business was transacted with letters of credit and private banknotes, and today all governments, federal, state and local, accept tax payments in checks which are, of course, not legal tender. Legal tender merely means that a creditor may require payment in currency. We are not concerned with plans of compulsion; we are planning a unit that will be preferred.