Capital is that part of wealth which is devoted to obtaining further wealth.

Producer's Surplus is a convenient name for the genus of which the rent of land is the leading species.

Individual 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.

Again, most of the chief distinctions marked by economic terms are differences not of kind but of degree.

In the absence of any short term in common use to represent all desirable things, or things that satisfy human wants, we may use the term Goods for that purpose.

The price of every thing rises and falls from time to time and place to place; and with every such change the purchasing power of money changes so far as that thing goes.

Slavery was regarded by Aristotle as an ordinance of nature, and so probably was it by the slaves themselves in olden time.