By Atif Mian and Amir Sufi quote from The Chicago Plan (1933-1939) of which Irving Fisher was a strong supporter:
“A chief loose screw in our present American money and banking system is the requirement of only fractional reserves behind demand deposits. Fractional reserves give our thousands of commercial banks power to increase or decrease the volume of our circulating medium [money] by increasing or decreasing bank loans and investments. The banks thus exercise what has always, and justly, been considered a prerogative of sovereign power. As each bank exercises this power independently without any centralized control, the resulting changes in the volume of the circulating medium are largely haphazard. This situation is a most important factor in booms and depressions.”
Read more at 100% Reserve Banking — The History | House of Debt.