We 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.

Civilized countries generally adopt gold or silver or both as money.

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

The hope that poverty and ignorance may gradually be extinguished derives indeed much support from the steady progress of the working classes during the 19th century.

The love for money is only one among many.

Political Economy or Economics is a study of mankind in the ordinary business of life.

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