Gurley and Shaw (1956), "Financial Intermediaries in the Saving-Investment Process":
As intermediaries, banks buy primary securities and issue, in payment for them, deposits and currency. As the payments mechanism, banks transfer title to means of payment on demand by customers. It has been pointed out before, especially by Henry Simons, that these two banking functions are at least incompatible. As managers of the payments mechanism, the banks cannot afford a shadow of insolvency. As intermediaries in a growing economy, the banks may rightly be tempted to wildcat. They must be solvent or the community will suffer; they must dare insolvency or the community will fail to realize its potentialities for growth.
All too often in American history energetic intermediation by banks has culminated in collapse of the payments mechanism. During some periods, especially cautious regard for solvency has resulted in collapse of bank intermediation. Each occasion that has demonstrated the incompatibility of the two principal banking functions has touched off a flood of financial reform. These reforms on balance have tended to emphasize bank solvency and the viability of the payments mechanism at the expense of bank participation in financial growth. They have by no means gone to the extreme that Simons proposed, of divorcing the two functions altogether, but they have tended in that direction rather than toward endorsement of wildcat banking. This bias in financial reform has improved the opportunities for non-monetary intermediaries. The relative retrogression in American banking seems to have resulted in part from regulatory suppression of the intermediary function.
Turning to another matter, it has seemed to be a distinctive, even magic, characteristic of the monetary system that it can create money, erecting a "multiple expansion"of debt in the form of deposits and currency on a limited base of reserves. Other financial institutions, conventional doctrine tells us, are denied this creative or multiplicative faculty. They are merely middlemen or brokers, not manufacturers of credit. Our own view is different. There is no denying, of course, that the monetary system creates debt in the special form of money: the monetary system can borrow by issue of instruments that are means of payment. There is no denying, either, that non-monetary intermediaries cannot create this same form of debt. ...
However, each kind of non-monetary intermediary can borrow, go into debt, issue its own characteristic obligations - in short, it can create credit, though not in monetary form. Moreover, the non-monetaryintermediaries are less inhibited in their own style of credit creation than are the banks in creating money. Credit creation by non-monetary intermediaries is restricted by various qualitative rules. Aside from these, the main factor that limits credit creation is the profit calculus. Credit creation by banks also is subject to the profit condition. But the monetary system is subject not only to this restraint and to a complex of qualitative rules. It is committed to a policy restraint, of avoiding excessive expansion or contraction of credit for the community's welfare, that is not imposed explicitly on non-monetary intermediaries. It is also held in check by a system of reserve requirements. ... The [money multiplier] is a remarkable phenomenon not because of its inflationary implications but because it means that bank expansion is anchored, as other financial expansion is not, to a regulated base. If credit creation by banks is miraculous, creation of credit by other financial institutions is still more a cause for exclamation.The first paragraph of this long footnote is a succinct statement of a basic tension in bank regulation that remains unresolved. (Recall that Simons' proposal to eliminate the intermediation function of banks was recently revived by Michel Kumhof at the IMF.) The other two paragraphs are a good clear statement of the argument I've been trying to develop on this blog, that there is no fundamental difference between money and other forms of financial claims, and a macroeconomically meaningful "quantity of money" was an artifact of mid-20th century regulatory arrangements.