"The individual user of money does not have to believe in money as long as he believes that there are others who do believe and who will accept money in exchange of commodities or the settlement of debt. The individual user of money does not have to believe in money as long as he nevertheless acts
as if he believes in money. In other words, money does not care if people believe in it. Perhaps it is money that believes in people rather than the other way around."
Ole Bjerg Making Money (2014) p. 110-1