Word of the day - Fiat money is money that has value only because of government regulation or law. The term derives from the Latin fiat, meaning "let it be done", as such money is established by government decree, e.g., the dollar and the euro.
Then it comes to our Quote of the day - "Paper money eventually returns to its intrinsic value: zero." -- Voltaire
-- John Maynard Keynes in The Economic Consequences of the Peace