Even more than most nineteenth-century economists, Henry Dunning Macle
od recognized the importance of trust in a properly functioning moneta
ry system. Macleod developed a credit theory of money in which he argu
ed that money originated as a debt claim against society. The value of
money depends on the willingness of economic agents to accept it, no
matter what material the money is made of. Macleod applied this theory
to the evaluation of other systems in which money is not based on deb
t, showing the dangerous consequences that could arise from pursuing o
ther theories of money creation to their logical conclusions.