Again, most of the chief distinctions marked by economic terms are differences not of kind but of degree.
Alfred MarshallIndividual and national rights to wealth rest on the basis of civil and international law, or at least of custom that has the force of law.
Alfred MarshallWe might as well reasonably dispute whether it is the upper or the under blade of a pair of scissors that cuts a piece of paper, as whether value is governed by demand or supply.
Alfred Marshall