Consumption may be regarded as negative production.
The most valuable of all capital is that invested in human beings
Material 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.
Civilized countries generally adopt gold or silver or both as money.
Producer's Surplus is a convenient name for the genus of which the rent of land is the leading species.
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.