The most reckless and treacherous of all theorists is he who professes to let facts and figures speak for themselves.
Alfred MarshallAgain, most of the chief distinctions marked by economic terms are differences not of kind but of degree.
Alfred MarshallMaterial goods consist of useful material things, and of all rights to hold, or use, or derive benefits from material things, or to receive them at a future time.
Alfred MarshallBut if inventions have increased man's power over nature very much, then the real value of money is better measured for some purposes in labour than in commodities.
Alfred Marshall