Brian Tracy: 21 Absolutely Unbreakable Laws of MoneySubmitted by Chris Caducky on Tue, 08/20/2013 - 00:33
"The first corollary of the law of exchange says: Money is a measure of the value that people place on goods and services. It's only what a person will pay that determines the value of something. Goods and services do not have a value separate and apart from what someone is willing to pay for them."
"The fourth corollary of the law of exchange says 'money is an effect, not a cause.'"