"As Jesús Huerta de Soto explains, the Peel Act of 1844 forms the foundation of modern banking systems. This law correctly prohibited the issuance of banknotes without 100 percent backing, but not that of deposits, as it failed to recognize that deposits are part of the monetary base (M). While issuing unbacked banknotes constitutes forgery and fraud, fractional reserve banking is a form of embezzlement."
https://mises.org/mises-wire/cultural-consequences-inflation